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Dennis Port, MA 02639 Weather

It is 34°F and clear in Dennis Port, MA 02639, observed at 8 AM EDT. Today: Mostly Sunny, high 55°F, low 44°F. Hourly and 10-day forecast from the National Weather Service. Times are local (EDT).

Dennis Port, MA 02639 current weather

34°F

Clear

H 55° / L 44°Feels like 34°

  • No rain expected in the next 12 hours

Observed at Hyannis, Barnstable Municipal-Boardman Airport (7 mi away), 10/28/2026, 8:00 AM EDT

Hourly forecast

NWS, updated 10/28/2026, 2:15 AM PT

  1. Now40°
  2. 9 AM48°
  3. 10 AM51°
  4. 11 AM53°
  5. 12 PM54°
  6. 1 PM54°
  7. 2 PM54°
  8. 3 PM54°
  9. 4 PM54°
  10. 5 PM54°
  11. 6 PM50°
  12. 7 PM49°
  13. 8 PM47°
  14. 9 PM44°
  15. 10 PM44°
  16. 11 PM44°
  17. Thu12 AM44°
  18. 1 AM44°
  19. 2 AM44°
  20. 3 AM45°
  21. 4 AM45°
  22. 5 AM45°
  23. 6 AM46°
  24. 7 AM47°
  25. 8 AM50°
  26. 9 AM55°
  27. 10 AM58°
  28. 11 AM60°
  29. 12 PM61°
  30. 1 PM61°
  31. 2 PM61°
  32. 3 PM61°
  33. 4 PM60°
  34. 5 PM61°
  35. 6 PM57°
  36. 7 PM56°
  37. 8 PM54°
  38. 9 PM53°
  39. 10 PM53°
  40. 11 PM53°
  41. Fri12 AM53°
  42. 1 AM53°
  43. 2 AM53°
  44. 3 AM53°
  45. 4 AM53°
  46. 5 AM53°
  47. 6 AM53°
  48. 7 AM54°

10-day forecast

Tap a day for details

  • Today10/28Low 44°High 55°

    Today: Mostly sunny, with a high near 55. South wind 1 to 6 mph.

    Tonight: Partly cloudy, with a low around 44. Southwest wind around 6 mph.

    Mostly Sunny
  • Thu10/29Low 53°High 62°

    Thursday: Sunny, with a high near 62. Southwest wind 5 to 10 mph.

    Thursday Night: Mostly clear, with a low around 53. Southwest wind around 9 mph.

    Sunny
  • Fri10/30Low 41°High 65°

    Friday: Sunny, with a high near 65. West wind around 9 mph, with gusts as high as 22 mph.

    Friday Night: Mostly clear, with a low around 41. Northwest wind around 10 mph, with gusts as high as 21 mph.

    Sunny
  • Sat10/31Low 39°High 53°

    Saturday: Sunny, with a high near 53. North wind 6 to 12 mph.

    Saturday Night: Mostly clear, with a low around 39. Northwest wind around 5 mph.

    Sunny
  • Sun11/1Low 46°High 58°

    Sunday: Sunny, with a high near 58. Southwest wind 3 to 8 mph.

    Sunday Night: Partly cloudy, with a low around 46. Southwest wind around 7 mph.

    Sunny
  • Mon11/227% chance of precipitationLow 46°High 61°

    Monday: A slight chance of rain showers after 10am. Partly sunny, with a high near 61. Southwest wind 5 to 8 mph.

    Monday Night: A chance of rain showers. Mostly cloudy, with a low around 46. West wind around 7 mph. Chance of precipitation is 30%.

    Slight Chance Rain Showers
  • Tue11/328% chance of precipitationLow 43°High 58°

    Tuesday: A chance of rain showers. Partly sunny, with a high near 58. Northeast wind 7 to 13 mph. Chance of precipitation is 30%.

    Tuesday Night: A slight chance of rain showers. Mostly cloudy, with a low around 43. Northeast wind around 10 mph, with gusts as high as 21 mph.

    Chance Rain Showers
  • Wed11/4Model blend35% chance of precipitationLow 45°High 57°

    Wednesday: Partly cloudy, slight chance of rain. High near 57°. Low that night near 45°. About 0.22 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Thu11/5Model blend47% chance of precipitationLow 47°High 59°

    Thursday: Chance of rain. High near 59°. Low that night near 47°. About 1.34 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Fri11/6Model blend42% chance of precipitationLow High 58°

    Friday: Chance of rain. High near 58°. About 0.20 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 41.671, -70.135 from the NWS BOX office, updated 10/28/2026, 2:15 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KHYA (Hyannis/Barnstable Muni, 7 mi), model run 10/27/2026, 7:00 PM EDT

Forecaster's discussionIssued 10/28/2026, 1:36 AM EDT

What has changed

Increased the forecast wind gusts for Friday. Otherwise, no significant changes were made to the forecast.

Key messages

- Gradual warmup brings high temperatures from the 50s to the 60s and 70s Thursday and Friday as the prolonged dry stretch continues. Windy conditions arrive Friday ahead of a weak cold front.

- Transition to a more unsettled weather pattern by early next week, bringing periodic chances for rain. However, confidence in specific timing remains low.

Discussion

KEY MESSAGE 1: Gradual warmup brings high temperatures from the 50s to the 60s and 70s Thursday and Friday as the prolonged dry stretch continues. Windy conditions arrive Friday ahead of a weak cold front.

Cold start to the day today as efficient radiational cooling has brought some of the coldest air of the season to the region. Lows have ranged from the lower 40s across urban areas to the lower 20s in the valleys of northern Massachusetts. Should see temperatures rebound fairly quickly by the early morning under full sun. Still, it will be somewhat cool today with high temperatures in the mid 50s in the interior and near 60 across the lower CT River Valley. Warmer lows Wednesday night as mid and high clouds overspread the region during the first half of the night. A more narrow window of clearing through the second half of the night will likely result in lows running about 5-10 degrees warmer.

Expecting a rebound in higher temperatures Thursday as a surge of warm advection ahead of a cold front warms 925 mb temperatures to between +11 and +15C.This will yield high temperatures in the mid- 60s on Thursday with a few isolated readings near 70 in the Connecticut and Merrimack River Valleys. Despite the mid-level zonal flow Friday (ahead of our next weak wave), the westerly flow will support efficient mixing in the boundary layer. This will result in a gusty/windier day and likely the warmest day of the week with high temperatures in the upper 60s to low 70s. Some of the strongest gusts will likely be found downwind of the Berkshires with a favorable wind direction for downsloping and thus locally higher gusts. NBM continues to highlight probabilities 50-75%+ for temperatures 70F or greater with the highest probabilities for the valleys and I-95 metros. This is reasonable given the added factor of the warming downslope flow. A mild late-October day is looking likely.

Another moisture-starved shortwave and cold front moves overnight Friday. This will shift temperatures back into the lower 60s this weekend, which is seasonable for late October.

KEY MESSAGE 2: Transition to a more unsettled weather pattern by early next week bringing periodic chances for rain. Confidence in specific timing remains low.

Looking ahead to next week, ensemble continues to show a rather chaotic upper level pattern unfolding across the CONUS. A deep trough digs over the western US as a series of embedded shortwaves eject into the plains and track E. Guidance shows a wide range of solutions with the eventual tracks of these systems as they approach the region early next week. Many factors, namely the extent and magnitude of upper level confluence will govern the strength and track of any eventual storms. At the moment, think the NBM has a good handle on POPs Sunday night into Tuesday with probabilities increasing to between 20 and 45 percent.

Aviation

Forecaster Confidence Levels:

Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent.

Today: High confidence.

VFR conditions. Light wind patterns continue. Generally out of the N less than 6 kts in the morning, then transitioning to SW in the afternoon after a period of more VRB winds. SSE winds possible at BOS for a period in the afternoon before becoming SW late afternoon/evening.

Tonight: High confidence.

VFR conditions. Initially light winds become SW and increase to 5-10kts overnight.

KBOS Terminal: High confidence in TAF.

KBDL Terminal: High confidence in TAF.

Outlook /Thursday through Sunday/:

Thursday through Thursday Night: VFR. Breezy.

Friday: VFR. Windy with local gusts up to 30 kt.

Friday Night through Saturday: VFR. Breezy.

Saturday Night through Sunday: VFR.

Marine

Forecaster Confidence Levels:

Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent.

Through Thursday: High confidence.

Light winds and seas 1-3 ft for today as high pressure persists across the coastal waters. High pressure slowly pulls away Thursday with increasing SW winds to between 15 and 20 kts. Marginal SCA conditions possible across the near coastal waters.

Outlook /Thursday through Sunday/:

Thursday: Winds less than 25 kt.

Thursday Night through Friday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas locally approaching 5 ft.

Friday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of seas approaching 5 ft.

Saturday: Winds less than 25 kt. Areas of seas approaching 5 ft.

Saturday Night through Sunday: Winds less than 25 kt.

Watches, warnings and advisories

CT: None. MA: None. RI: None. MARINE: None.

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now40°Sunny1%1 mph
  2. 9 AM48°Sunny1%1 mph
  3. 10 AM51°Mostly Sunny1%2 mph
  4. 11 AM53°Mostly Sunny1%3 mph
  5. 12 PM54°Partly Sunny1%5 mph
  6. 1 PM54°Partly Sunny1%5 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow
35°53°70°0%100%WedThuFriSatSunMonTue54°40°61°44°65°48°53°40°57°39°61°46°57°47°

Line: temperature °F. Bars: chance of precipitation.

  1. WedNow40° 1% Sky 20%1
  2.  9 AM48° 1% Sky 24%1
  3.  10 AM51° 1% Sky 32%2
  4.  11 AM53° 1% Sky 45%3
  5.  12 PM54° 1% Sky 52%5
  6.  1 PM54° 1% Sky 62%5
  7.  2 PM54° 2% Sky 44%5
  8.  3 PM54° 2% Sky 35%6
  9.  4 PM54° 1% Sky 35%6
  10.  5 PM54° 2% Sky 59%6
  11.  6 PM50° 2% Sky 51%6
  12.  7 PM49° 2% Sky 62%5
  13.  8 PM47° 2% Sky 54%5
  14.  9 PM44°Feels 41°2% Sky 41%5
  15.  10 PM44° 2% Sky 40%3g9
  16.  11 PM44°Feels 41°2% Sky 33%5g10
  17. Thu 10/2912 AM44° 2% Sky 19%3g10
  18.  1 AM44° 2% Sky 10%3g10
  19.  2 AM44° 2% Sky 3%3g10
  20.  3 AM45° 2% Sky 4%3g10
  21.  4 AM45° 1% Sky 3%5g10
  22.  5 AM45° 1% Sky 3%5g10
  23.  6 AM46° 1% Sky 6%5g12
  24.  7 AM47° 1% Sky 6%5g12
  25.  8 AM50° 0% Sky 5%6g12
  26.  9 AM55° 0% Sky 2%6g13
  27.  10 AM58° 0% Sky 0%8g14
  28.  11 AM60° 0% Sky 1%9g16
  29.  12 PM61° 0% Sky 0%10g17
  30.  1 PM61° 0% Sky 1%10g18
  31.  2 PM61° 0% Sky 1%10g18
  32.  3 PM61° 0% Sky 1%10g20
  33.  4 PM60° 0% Sky 1%10g18
  34.  5 PM61° 0% Sky 3%10g18
  35.  6 PM57° 0% Sky 13%9g17
  36.  7 PM56° 0% Sky 22%9g17
  37.  8 PM54° 0% Sky 20%8g16
  38.  9 PM53° 0% Sky 53%8g17
  39.  10 PM53° 0% Sky 32%8g17
  40.  11 PM53° 0% Sky 11%8g17
  41. Fri 10/3012 AM53° 0% Sky 13%8g17
  42.  1 AM53° 0% Sky 15%8g18
  43.  2 AM53° 0% Sky 17%8g18
  44.  3 AM53° 0% Sky 16%8g18
  45.  4 AM53° 0% Sky 16%9g20
  46.  5 AM53° 0% Sky 15%9g20
  47.  6 AM53° 0% Sky 17%9g20
  48.  7 AM54° 0% Sky 20%8g21
  49.  8 AM55° 0% Sky 22%8g22
  50.  9 AM57° 0% Sky 20%8g21
  51.  10 AM60° 0% Sky 17%9g18
  52.  11 AM62° 0% Sky 15%9g17
  53.  12 PM64° 0% Sky 10%9g17
  54.  1 PM64° 0% Sky 6%8g17
  55.  2 PM65° 0% Sky 1%8g17
  56.  3 PM65° 0% Sky 2%8g18
  57.  4 PM64° 0% Sky 3%8g18
  58.  5 PM63° 0% Sky 4%8g20
  59.  6 PM60° 0% Sky 6%8g20
  60.  7 PM57° 0% Sky 7%8g21
  61.  8 PM54° 0% Sky 9%8g21
  62.  9 PM52° 0% Sky 7%8g20
  63.  10 PM50°Feels 47°0% Sky 6%8g18
  64.  11 PM48°Feels 44°0% Sky 4%8g17
  65. Sat 10/3112 AM47°Feels 43°0% Sky 4%8g17
  66.  1 AM45°Feels 41°0% Sky 3%8g17
  67.  2 AM44°Feels 39°0% Sky 3%8g17
  68.  3 AM43°Feels 38°0% Sky 4%9g18
  69.  4 AM42°Feels 36°0% Sky 5%9g18
  70.  5 AM41°Feels 35°0% Sky 6%10g20
  71.  6 AM41°Feels 35°0% Sky 4%10g20
  72.  7 AM42°Feels 36°0% Sky 2%10g20
  73.  8 AM43°Feels 37°0% Sky 0%10g20
  74.  9 AM46°Feels 41°0% Sky 2%10g20
  75.  10 AM50°Feels 46°0% Sky 5%12g21
  76.  11 AM52° 0% Sky 7%12g21
  77.  12 PM53° 0% Sky 8%12g20
  78.  1 PM53° 0% Sky 9%12g18
  79.  2 PM53° 0% Sky 10%10g17
  80.  3 PM52° 0% Sky 10%9g15
  81.  4 PM52° 0% Sky 10%7g13
  82.  5 PM51° 0% Sky 10%6
  83.  6 PM48° 0% Sky 12%5
  84.  7 PM45° 0% Sky 13%3
  85.  8 PM44° 0% Sky 15%2
  86.  9 PM42° 0% Sky 15%2
  87.  10 PM41° 0% Sky 15%2
  88.  11 PM40° 0% Sky 15%2
  89. Sun 11/112 AM39° 0% Sky 15%2
  90.  1 AM39° 0% Sky 15%2g7
  91.  1 AM39° 0% Sky 30%2g7
  92.  2 AM39° 0% Sky 30%2g7
  93.  3 AM39° 0% Sky 30%2g7
  94.  4 AM39° 0% Sky 30%2g7
  95.  5 AM39° 0% Sky 30%2g7
  96.  6 AM40° 0% Sky 30%3
  97.  7 AM42° 0% Sky 24%3
  98.  8 AM46° 0% Sky 24%5
  99.  9 AM51° 1% Sky 24%5
  100.  10 AM55° 1% Sky 24%6
  101.  11 AM56° 1% Sky 24%7
  102.  12 PM56° 1% Sky 24%7g13
  103.  1 PM56° 1% Sky 21%8g14
  104.  2 PM57° 1% Sky 21%8g15
  105.  3 PM57° 1% Sky 21%8g15
  106.  4 PM57° 1% Sky 21%8g15
  107.  5 PM55° 2% Sky 21%7g14
  108.  6 PM52° 2% Sky 21%7g14
  109.  7 PM50° 2% Sky 27%6g13
  110.  8 PM49° 2% Sky 27%6g13
  111.  9 PM48° 2% Sky 27%5g13
  112.  10 PM47° 2% Sky 27%5g13
  113.  11 PM46° 3% Sky 27%5g13
  114. Mon 11/212 AM46° 3% Sky 27%5g12
  115.  1 AM46° 4% Sky 38%5g12
  116.  2 AM46° 5% Sky 38%5g12
  117.  3 AM46° 5% Sky 38%5g12
  118.  4 AM46° 6% Sky 38%5g12
  119.  5 AM46° 8% Sky 38%5g12
  120.  6 AM47° 9% Sky 38%5g12
  121.  7 AM48° 11% Sky 53%5g12
  122.  8 AM51° 13% Sky 53%6g12
  123.  9 AM55° 14% Sky 53%7g12
  124.  10 AM58° 16% Sky 53%8
  125.  11 AM59° 17% Sky 53%8g13
  126.  12 PM60° 17% Sky 53%8g13
  127.  1 PM60° 18% Sky 65%8g14
  128.  2 PM61° 19% Sky 65%8g14
  129.  3 PM61° 20% Sky 65%8g14
  130.  4 PM60° 21% Sky 65%8g13
  131.  5 PM58° 22% Sky 65%7g12
  132.  6 PM55° 22% Sky 65%6g12
  133.  7 PM53° 20% Sky 70%5g10
  134.  8 PM51° 21% Sky 70%5g10
  135.  9 PM50° 22% Sky 70%5g10
  136.  10 PM49° 22% Sky 70%5g10
  137.  11 PM48° 23% Sky 70%5g10
  138. Tue 11/312 AM48° 23% Sky 70%5g12
  139.  1 AM48° 25% Sky 66%5g12
  140.  2 AM48° 25% Sky 66%5g12
  141.  3 AM48°Feels 45°26% Sky 66%6g13
  142.  4 AM48°Feels 45°27% Sky 66%6g13
  143.  5 AM48°Feels 45°27% Sky 66%7g14
  144.  6 AM47°Feels 44°27% Sky 66%7g15
  145.  7 AM48°Feels 44°27% Sky 60%8g16
  146.  8 AM50°Feels 46°27% Sky 60%9g17
  147.  9 AM53° 28% Sky 60%10g18
  148.  10 AM56° 28% Sky 60%12g20
  149.  11 AM57° 28% Sky 60%13g21
  150.  12 PM57° 28% Sky 60%13g21
  151.  1 PM57° 25% Sky 59%13g21
  152.  2 PM57° 25% Sky 59%13g21
  153.  3 PM57° 25% Sky 59%13g21
  154.  4 PM56° 25% Sky 59%13g20
  155.  5 PM54° 24% Sky 59%12g18
  156.  6 PM51° 23% Sky 59%10g17

Temperature °F · chance of precipitation · amount in inches (T = trace) · sky cover · wind and gusts (g) in mph

NWS hourly forecast updated 10/28/2026, 2:15 AM PT

Radar and satellite

National radar

NEXRAD (last 50 min) and GOES

Latest

Nearby hazards

Massachusetts hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: Sierra Range Fire (0 acres), Great Western Rd Fire (0 acres)

Drought

By county

Barnstable County, week of 10/20/2026

46% of the county is in moderate drought or worse.

Tides nearby

NOAA tide stations

Beaches nearby

EPA BEACON beaches

Sun and moon

Local time, center of the area

Sunrise
7:08 AM
Sunset
5:40 PM
Daylight
10 hr 32 min
Moon
Waning Gibbous 94% lit
First light (civil dawn)
6:39 AM
Last light (civil dusk)
6:09 PM
Moonrise
6:58 PM
Moonset
10:12 AM

Normal October weather

Climate

Normal October high 62°, low 47°, precipitation 4.72 in for the month. 1991 to 2020 normals at W Harwich, 1 mi away.

Other places nearby

Data sources

See something wrong? Request a correction

Frequently asked questions

What is the weather in Dennis Port, MA 02639 right now?
The latest observation from Hyannis, Barnstable Municipal-Boardman Airport was 34°F and clear, reported at 10/28/2026, 8:00 AM EDT.
What is the high temperature today in Dennis Port, MA 02639?
The National Weather Service forecast for today calls for a high near 55°F. Mostly Sunny.
Will it rain in Dennis Port, MA 02639 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for Dennis Port, MA 02639?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 4 to Nov 6) come from the NOAA National Blend of Models, with highs of 57°F to 59°F and up to a 47% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in Dennis Port, MA 02639 today?
Sunrise is about 7:08 AM EDT and sunset is about 5:40 PM EDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Dennis Port, MA 02639?
At W Harwich, the 1991 to 2020 normal high in October is 62°F and the normal low is 47°F.

About this data

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