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Jefferson, PA 17329 Weather

It is 34°F and clear in Jefferson, PA 17329, observed at 7:10 AM EDT. Today: Mostly Sunny, high 60°F, low 39°F. Hourly and 10-day forecast from the National Weather Service. Times are local (EDT).

Jefferson, PA 17329 current weather

34°F

Clear

H 60° / L 39°Feels like 34°

Observed at York, York Airport (11 mi away), 10/31/2026, 7:10 AM EDT

Hourly forecast

NWS, updated 10/31/2026, 3:36 AM PT

  1. Now38°
  2. 8 AM41°
  3. 9 AM44°
  4. 10 AM48°
  5. 11 AM52°
  6. 12 PM54°
  7. 1 PM56°
  8. 2 PM58°
  9. 3 PM59°
  10. 4 PM60°
  11. 5 PM57°
  12. 6 PM54°
  13. 7 PM51°
  14. 8 PM48°
  15. 9 PM47°
  16. 10 PM46°
  17. 11 PM45°
  18. 12 AM44°Sun
  19. 1 AM44°
  20. 1 AM43°
  21. 2 AM42°
  22. 3 AM41°
  23. 4 AM41°
  24. 5 AM40°
  25. 6 AM41°
  26. 7 AM41°
  27. 8 AM45°
  28. 9 AM51°
  29. 10 AM55°
  30. 11 AM57°
  31. 12 PM60°
  32. 1 PM61°
  33. 2 PM61°
  34. 3 PM62°
  35. 4 PM61°
  36. 5 PM58°
  37. 6 PM55°
  38. 7 PM50°
  39. 8 PM49°
  40. 9 PM48°
  41. 10 PM47°
  42. 11 PM46°
  43. 12 AM46°Mon
  44. 1 AM45°
  45. 2 AM44°
  46. 3 AM44°
  47. 4 AM44°
  48. 5 AM42°

10-day forecast

Tap a day for details

  • Today10/31Low 39°High 60°

    Today: Mostly sunny, with a high near 60. North wind 2 to 7 mph.

    Tonight: Mostly cloudy, with a low around 39. North wind around 2 mph.

    Mostly Sunny
  • Sun11/1Low 42°High 63°

    Sunday: Mostly cloudy, with a high near 63. South wind 0 to 3 mph.

    Sunday Night: Partly cloudy, with a low around 42. South wind around 2 mph.

    Mostly Cloudy
  • Mon11/2Low 44°High 65°

    Monday: Partly sunny, with a high near 65. South wind 1 to 5 mph.

    Monday Night: Partly cloudy, with a low around 44.

    Partly Sunny
  • Tue11/3Low 51°High 68°

    Tuesday: Partly sunny, with a high near 68.

    Tuesday Night: Mostly cloudy, with a low around 51.

    Partly Sunny
  • Wed11/444% chance of precipitationLow 57°High 70°

    Wednesday: A chance of rain showers after 1pm. Mostly cloudy, with a high near 70. Chance of precipitation is 30%.

    Wednesday Night: A chance of rain showers. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.

    Mostly Cloudy then Chance Rain Showers
  • Thu11/556% chance of precipitationLow 56°High 70°

    Thursday: Rain showers likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.

    Rain Showers Likely
  • Fri11/650% chance of precipitationLow 52°High 68°

    Friday: A chance of rain showers. Mostly cloudy, with a high near 68. Chance of precipitation is 50%.

    Friday Night: A chance of rain showers. Mostly cloudy, with a low around 52.

    Chance Rain Showers
  • Sat11/7Model blend15% chance of precipitationLow 41°High 64°

    Saturday: Partly cloudy, slight chance of rain. High near 64°. Low that night near 41°.

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

  • Sun11/8Model blend11% chance of precipitationLow 40°High 61°

    Sunday: Partly cloudy. High near 61°. Low that night near 40°.

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

  • Mon11/9Model blend14% chance of precipitationLow 38°High 61°

    Monday: Partly cloudy. High near 61°. Low that night near 38°.

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

Forecast for 39.760, -76.861 from the NWS CTP office, updated 10/31/2026, 3:36 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KTHV (York Arpt, 11 mi), model run 10/31/2026, 4:00 AM EDT

Hazardous weather outlookIssued 10/31/2026, 3:42 AM EDT

This Hazardous Weather Outlook is for central Pennsylvania.

Day one

Today and tonight.

No hazardous weather is expected at this time.

Days two through seven

Sunday through Friday.

No hazardous weather is expected at this time.

Spotter information statement

Spotter activation is not expected at this time.

Forecaster's discussionIssued 10/31/2026, 4:15 AM EDT

What has changed

* Lowered dewpoints/RHs today and Monday.

Key messages

1) Lengthy run of dry and mild weather continues into early November before coming to an end by late next week

Discussion

KEY MESSAGE 1: Lengthy run of dry and mild weather continues into early November before coming to an end by late next week

Another very pleasant and comfortable weekend to close out October (Halloween) and start November (ending daylight saving time).

Major message is that the high pressure overhead will not yield to anything for several more days. It deflects one system to our north early in the week before somethings stronger can gather in the MS Valley and slide slowly this way.

Minor messages include:

Morning fog and lower clouds should burn away after a couple of hours today with high clouds for the rest of the day. The temps will be down significantly (down 10-12F) from Fri in the SE, but the NW will benefit from warm advection and add 3-7F.

Dewpoints should get into the upper 20s to lower 30s today and drop RH into the 30s almost everywhere. There is a small concern for a dewpoint bomb occurring today with very dry air lurking just 2-4kft up. Drastically lower dewpoints would be more- likely over the central mountains and Allegheny Plateau than elsewhere today. However, thankfully, the wind speed is nowhere near a level where we would need to consider a Red Flag Warning for fire weather concerns. The wind yesterday caused more of a concern. With many days of dry weather (lack of moisture and no precip) in store, the fire weather threat will continue to be at the top of the list of weather concerns to evaluate.

Temps will be several degrees above normal during the daytimes with maxes 10-15F above normal for days 3-7 or longer. Morning lows will rise more-gradually, but still reach 15-20F above normal for Thurs-Fri. We could set a record maxi-min or two.

Aviation

MVFR cigs in lingering stratocu near the NY border and valley fog formation could result in brief sub-VFR restrictions early this morning; otherwise VFR should prevail for the rest of today and through the balance of the weekend.

Outlook:

Sat-Tue: A.M. valley fog; otherwise VFR.

Wed-Fri: Periods of rain and sub-VFR becoming more likely.

Watches, warnings and advisories

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. Now38°Sunny0%2 mph
  2. 8 AM41°Sunny0%2 mph
  3. 9 AM44°Sunny0%5 mph
  4. 10 AM48°Sunny0%6 mph
  5. 11 AM52°Mostly Sunny0%7 mph
  6. 12 PM54°Mostly Sunny0%7 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

What is the weather in Jefferson, PA 17329 right now?
The latest observation from York, York Airport was 34°F and clear, reported at 10/31/2026, 7:10 AM EDT.
What is the high temperature today in Jefferson, PA 17329?
The National Weather Service forecast for today calls for a high near 60°F. Mostly Sunny.
Will it rain in Jefferson, PA 17329 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 Jefferson, PA 17329?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 7 to Nov 9) come from the NOAA National Blend of Models, with highs of 61°F to 64°F. Model guidance this far out often changes.
What time is sunrise and sunset in Jefferson, PA 17329 today?
Sunrise is about 7:35 AM EDT and sunset is about 6:06 PM EDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Jefferson, PA 17329?
At Millers 4 NE, the 1991 to 2020 normal high in October is 65°F and the normal low is 45°F.

Nearby hazards

Pennsylvania 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

UV and air quality forecast

EPA and AirNow

AQI forecast today (Susquehanna Valley)
45GoodPM2.5
AQI forecast tomorrow (Susquehanna Valley)
60ModeratePM2.5

UV index guide · Air quality

Drought

By county

York County, week of 10/27/2026

No drought or abnormal dryness in this county.

Sun and moon

Local time, center of the area

Sunrise
7:35 AM
Sunset
6:06 PM
Daylight
10 hr 31 min
Moon
Waning Gibbous 71% lit
First light (civil dawn)
7:07 AM
Last light (civil dusk)
6:34 PM
Moonrise
11:02 PM
Moonset
1:36 PM

Normal October weather

Climate

Normal October high 65°, low 45°, precipitation 4.19 in for the month. 1991 to 2020 normals at Millers 4 NE, 4 mi away.

Other places nearby

Data sources

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About this data

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