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Old Mystic, CT 06355 Weather

Today: Widespread Frost then Mostly Sunny, high 59°F, low 34°F. Hourly and 10-day forecast from the National Weather Service. Times are local (EDT).

Old Mystic, CT 06355 current weather

36°F

Areas Of Frost

Forecast for this hour. No recent report from a nearby station.

H 59° / L 34°

No recent station report. NWS hourly forecast updated 10/27/2026, 11:25 PM PT

1 active alert

From the National Weather Service for this forecast zone or county

State alerts

Minor1Minimal to no known threat

Hourly forecast

NWS, updated 10/27/2026, 11:25 PM PT

  1. Now36°
  2. 5 AM36°
  3. 6 AM35°
  4. 7 AM34°
  5. 8 AM36°
  6. 9 AM41°
  7. 10 AM48°
  8. 11 AM53°
  9. 12 PM56°
  10. 1 PM57°
  11. 2 PM59°
  12. 3 PM57°
  13. 4 PM57°
  14. 5 PM57°
  15. 6 PM52°
  16. 7 PM49°
  17. 8 PM48°
  18. 9 PM47°
  19. 10 PM46°
  20. 11 PM46°
  21. Thu12 AM46°
  22. 1 AM46°
  23. 2 AM46°
  24. 3 AM46°
  25. 4 AM45°
  26. 5 AM46°
  27. 6 AM46°
  28. 7 AM46°
  29. 8 AM48°
  30. 9 AM53°
  31. 10 AM57°
  32. 11 AM61°
  33. 12 PM64°
  34. 1 PM64°
  35. 2 PM65°
  36. 3 PM66°
  37. 4 PM64°
  38. 5 PM64°
  39. 6 PM60°
  40. 7 PM56°
  41. 8 PM55°
  42. 9 PM55°
  43. 10 PM55°
  44. 11 PM55°
  45. Fri12 AM55°
  46. 1 AM54°
  47. 2 AM54°
  48. 3 AM54°

10-day forecast

Tap a day for details

  • Today10/28Low 34°High 59°

    Wednesday: Widespread frost before 9am. Mostly sunny. High near 59, with temperatures falling to around 57 in the afternoon. East wind around 6 mph.

    Overnight: Areas of frost. Mostly clear. Low around 34, with temperatures rising to around 36 overnight. North wind around 3 mph.

    Widespread Frost then Mostly Sunny
  • Thu10/29Low 52°High 66°

    Thursday: Sunny. High near 66, with temperatures falling to around 64 in the afternoon. Southwest wind 1 to 9 mph.

    Thursday Night: Mostly clear. Low around 52, with temperatures rising to around 54 overnight. Southwest wind around 8 mph.

    Sunny
  • Fri10/30Low 40°High 70°

    Friday: Sunny. High near 70, with temperatures falling to around 65 in the afternoon.

    Friday Night: Mostly clear, with a low around 40.

    Sunny
  • Sat10/31Low 36°High 60°

    Saturday: Sunny, with a high near 60.

    Saturday Night: Mostly clear, with a low around 36.

    Sunny
  • Sun11/1Low 45°High 62°

    Sunday: Mostly sunny, with a high near 62.

    Sunday Night: Partly cloudy, with a low around 45.

    Mostly Sunny
  • Mon11/228% chance of precipitationLow 47°High 65°

    Monday: A slight chance of rain showers after 7am. Partly sunny, with a high near 65.

    Monday Night: A chance of rain showers. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.

    Slight Chance Rain Showers
  • Tue11/328% chance of precipitationLow High 63°

    Tuesday: A chance of rain showers. Partly sunny, with a high near 63.

    Chance Rain Showers
  • Wed11/4Model blend45% chance of precipitationLow 46°High 60°

    Wednesday: Chance of rain. High near 60°. Low that night near 46°. About 0.49 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 48°High 62°

    Thursday: Chance of rain. High near 62°. Low that night near 48°. About 0.86 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 blend43% chance of precipitationLow High 61°

    Friday: Chance of rain. High near 61°. About 0.38 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 41.375, -71.978 from the NWS OKX office, updated 10/27/2026, 11:25 PM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KGON (Groton-New London Arpt, 5 mi), model run 10/27/2026, 7:00 PM EDT

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. Now36°Areas Of Frost0%3 mph
  2. 5 AM36°Areas Of Frost0%3 mph
  3. 6 AM35°Widespread Frost0%3 mph
  4. 7 AM34°Widespread Frost0%3 mph
  5. 8 AM36°Areas Of Frost1%3 mph
  6. 9 AM41°Mostly Sunny1%3 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow
30°53°75°0%100%WedThuFriSatSunMonTue59°34°66°45°70°47°60°40°62°36°65°46°62°48°

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

  1. WedNow36°0%3
  2.  5 AM36°0%3
  3.  6 AM35°0%3
  4.  7 AM34°0%3
  5.  8 AM36°1%3
  6.  9 AM41°1%3
  7.  10 AM48°1%3
  8.  11 AM53°1%3
  9.  12 PM56°1%5
  10.  1 PM57°1%6
  11.  2 PM59°1%6
  12.  3 PM57°1%6
  13.  4 PM57°1%5
  14.  5 PM57°1%3
  15.  6 PM52°1%3
  16.  7 PM49°1%2
  17.  8 PM48°1%2
  18.  9 PM47°1%2
  19.  10 PM46°1%1
  20.  11 PM46°1%1
  21. Thu 10/2912 AM46°1%1
  22.  1 AM46°1%1
  23.  2 AM46°1%1
  24.  3 AM46°1%1
  25.  4 AM45°1%1
  26.  5 AM46°1%1
  27.  6 AM46°1%1
  28.  7 AM46°1%1
  29.  8 AM48°0%2
  30.  9 AM53°0%3
  31.  10 AM57°0%6
  32.  11 AM61°0%7
  33.  12 PM64°0%8
  34.  1 PM64°0%9
  35.  2 PM65°0%9
  36.  3 PM66°0%9
  37.  4 PM64°0%8
  38.  5 PM64°0%7
  39.  6 PM60°0%7
  40.  7 PM56°0%6
  41.  8 PM55°0%6
  42.  9 PM55°0%6
  43.  10 PM55°0%6
  44.  11 PM55°0%6
  45. Fri 10/3012 AM55°0%6
  46.  1 AM54°0%7
  47.  2 AM54°0%7
  48.  3 AM54°0%7
  49.  4 AM54°0%8
  50.  5 AM54°0%8
  51.  6 AM53°0%7
  52.  7 AM53°0%7
  53.  8 AM54°0%6
  54.  9 AM57°0%6
  55.  10 AM62°0%6
  56.  11 AM66°0%7
  57.  12 PM68°0%8
  58.  1 PM70°0%9
  59.  2 PM70°0%10
  60.  3 PM69°0%12
  61.  4 PM68°0%12
  62.  5 PM65°0%12
  63.  6 PM61°0%10
  64.  7 PM56°0%10
  65.  8 PM52°0%9
  66.  9 PM50°0%9
  67.  10 PM48°0%9
  68.  11 PM47°0%9
  69. Sat 10/3112 AM46°0%8
  70.  1 AM45°0%8
  71.  2 AM44°0%8
  72.  3 AM43°0%7
  73.  4 AM43°0%6
  74.  5 AM42°0%5
  75.  6 AM41°0%5
  76.  7 AM40°0%5
  77.  8 AM41°0%5
  78.  9 AM45°0%6
  79.  10 AM50°0%6
  80.  11 AM54°0%7
  81.  12 PM57°0%7
  82.  1 PM58°0%7
  83.  2 PM59°0%6
  84.  3 PM60°0%5
  85.  4 PM60°0%5
  86.  5 PM58°0%3
  87.  6 PM54°0%2
  88.  7 PM49°0%1
  89.  8 PM48°0%0
  90.  9 PM45°0%0
  91.  10 PM42°0%0
  92.  11 PM40°0%0
  93. Sun 11/112 AM39°0%0
  94.  1 AM38°0%0
  95.  1 AM38°0%0
  96.  2 AM37°0%0
  97.  3 AM37°0%0
  98.  4 AM37°0%0
  99.  5 AM36°0%0
  100.  6 AM36°0%0
  101.  7 AM38°1%1
  102.  8 AM43°1%2
  103.  9 AM50°1%3
  104.  10 AM56°1%5
  105.  11 AM59°1%6
  106.  12 PM60°1%7
  107.  1 PM61°3%7
  108.  2 PM62°3%7
  109.  3 PM62°3%6
  110.  4 PM61°3%5
  111.  5 PM59°3%3
  112.  6 PM56°3%3
  113.  7 PM53°3%2
  114.  8 PM51°3%2
  115.  9 PM50°3%2
  116.  10 PM49°3%2
  117.  11 PM48°3%2
  118. Mon 11/212 AM48°3%2
  119.  1 AM48°8%2
  120.  2 AM48°8%2
  121.  3 AM47°8%3
  122.  4 AM47°8%3
  123.  5 AM46°8%3
  124.  6 AM46°8%3
  125.  7 AM47°22%3
  126.  8 AM50°22%5
  127.  9 AM55°22%5
  128.  10 AM59°22%6
  129.  11 AM61°22%7
  130.  12 PM63°22%7
  131.  1 PM64°21%7
  132.  2 PM65°21%7
  133.  3 PM65°21%7
  134.  4 PM64°21%6
  135.  5 PM62°21%5
  136.  6 PM59°21%3
  137.  7 PM56°24%2
  138.  8 PM54°24%2
  139.  9 PM53°24%2
  140.  10 PM52°24%2
  141.  11 PM51°24%2
  142. Tue 11/312 AM50°24%2
  143.  1 AM50°28%2
  144.  2 AM50°28%3
  145.  3 AM49°28%3
  146.  4 AM49°28%5
  147.  5 AM48°28%6
  148.  6 AM48°28%6
  149.  7 AM49°27%7
  150.  8 AM51°27%8
  151.  9 AM54°27%8
  152.  10 AM57°27%9
  153.  11 AM59°27%9
  154.  12 PM60°27%9
  155.  1 PM61°28%9
  156.  2 PM62°28%9

Temperature °F · chance of precipitation · wind in mph

NWS hourly forecast updated 10/27/2026, 11:25 PM PT

Radar and satellite

National radar

NEXRAD (last 50 min) and GOES

Latest

Nearby hazards

Connecticut 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: None reported

Drought

By county

Southeastern Connecticut Planning Region, week of 10/20/2026

No drought or abnormal dryness in this county.

Tides nearby

NOAA tide stations

Beaches nearby

EPA BEACON beaches

Sun and moon

Local time, center of the area

Sunrise
7:14 AM
Sunset
5:48 PM
Daylight
10 hr 33 min
Moon
Waning Gibbous 95% lit
First light (civil dawn)
6:46 AM
Last light (civil dusk)
6:16 PM
Moonrise
7:08 PM
Moonset
10:18 AM

Normal October weather

Climate

Normal October high 63°, low 47°, precipitation 4.42 in for the month. 1991 to 2020 normals at Groton, 4 mi away.

Other places nearby

Data sources

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Frequently asked questions

What is the high temperature today in Old Mystic, CT 06355?
The National Weather Service forecast for wednesday calls for a high near 59°F. Widespread Frost then Mostly Sunny.
Will it rain in Old Mystic, CT 06355 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 Old Mystic, CT 06355?
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 60°F to 62°F and up to a 47% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in Old Mystic, CT 06355 today?
Sunrise is about 7:14 AM EDT and sunset is about 5:48 PM EDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Old Mystic, CT 06355?
At Groton, the 1991 to 2020 normal high in October is 63°F and the normal low is 47°F.

About this data

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