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Current weather in Jefferson is overcast clouds.

Where can I find the hourly weather forecast for Jefferson?

This page shows hourly weather forecast for Jefferson, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Jefferson updated regularly?

Weather data for Jefferson is updated regularly with the latest available observations and forecasts.

Now · 7:41 PM

Jefferson Weather & Hourly Forecast

United States · Pennsylvania · 15344

58°F

Overcast night

Feels like: 54°F

💧 Humidity 74% 🌡 Pressure 30.33 inHg 💨 Wind 8 mph 👁 Visibility 19.8 mi ☁ Clouds 98% ☀️ UV index 0.0 · Low 🌅 Sunrise 7:07 AM 🌇 Sunset 7:17 PM

Hourly Forecast for Jefferson

Today

8:00 PM

Overcast night

58° 💧 None 💨 8 mph H 74%30.33 inHg

11:00 PM

Overcast night

57° 💧 None 💨 8 mph H 74%30.36 inHg

Tomorrow

2:00 AM

Overcast night

55° 💧 0.001 in 💨 7 mph H 74%30.33 inHg

5:00 AM

Mostly cloudy night

51° 💧 None 💨 8 mph H 80%30.36 inHg

8:00 AM

Sunny

50° 💧 None 💨 9 mph H 83%30.36 inHg

11:00 AM

Sunny

57° 💧 None 💨 9 mph H 65%30.36 inHg

2:00 PM

Partly cloudy

63° 💧 None 💨 8 mph H 58%30.30 inHg

5:00 PM

Sunny

64° 💧 None 💨 8 mph H 57%30.27 inHg

8:00 PM

Clear night

55° 💧 None 💨 6 mph H 76%30.27 inHg

11:00 PM

Clear night

51° 💧 None 💨 6 mph H 80%30.27 inHg

Friday

2:00 AM

Clear night

48° 💧 None 💨 5 mph H 85%30.27 inHg

5:00 AM

Clear night

45° 💧 None 💨 6 mph H 91%30.24 inHg

8:00 AM

Sunny

46° 💧 None 💨 6 mph H 90%30.27 inHg

11:00 AM

Sunny

58° 💧 None 💨 7 mph H 67%30.27 inHg

2:00 PM

Sunny

65° 💧 None 💨 8 mph H 48%30.18 inHg

5:00 PM

Sunny

66° 💧 None 💨 8 mph H 51%30.12 inHg

Today

8:00 PM

Overcast night

58° 💧 None 💨 8 mph H 74%30.33 inHg

9:00 PM

Mostly cloudy night

58° 💧 None 💨 8 mph H 76%30.33 inHg

10:00 PM

Mostly cloudy night

57° 💧 None 💨 7 mph H 77%30.36 inHg

11:00 PM

Overcast night

57° 💧 None 💨 8 mph H 74%30.36 inHg

Tomorrow

12:00 AM

Overcast night

56° 💧 None 💨 7 mph H 73%30.36 inHg

1:00 AM

Overcast night

55° 💧 None 💨 7 mph H 75%30.33 inHg

2:00 AM

Overcast night

55° 💧 0.001 in 💨 7 mph H 74%30.33 inHg

3:00 AM

Mostly cloudy night

54° 💧 None 💨 6 mph H 76%30.33 inHg

4:00 AM

Partly cloudy night

53° 💧 None 💨 7 mph H 79%30.33 inHg

5:00 AM

Mostly cloudy night

51° 💧 None 💨 8 mph H 80%30.36 inHg

6:00 AM

Partly cloudy night

51° 💧 None 💨 8 mph H 81%30.36 inHg

7:00 AM

Mostly clear night

49° 💧 None 💨 8 mph H 84%30.36 inHg

8:00 AM

Sunny

50° 💧 None 💨 9 mph H 83%30.36 inHg

9:00 AM

Sunny

52° 💧 None 💨 9 mph H 74%30.39 inHg

10:00 AM

Sunny

54° 💧 None 💨 9 mph H 67%30.39 inHg

11:00 AM

Sunny

57° 💧 None 💨 9 mph H 65%30.36 inHg

12:00 PM

Partly cloudy

59° 💧 None 💨 8 mph H 62%30.36 inHg

1:00 PM

Partly cloudy

61° 💧 None 💨 8 mph H 59%30.33 inHg

2:00 PM

Partly cloudy

63° 💧 None 💨 8 mph H 58%30.30 inHg

3:00 PM

Partly cloudy

64° 💧 None 💨 8 mph H 57%30.27 inHg

4:00 PM

Sunny

64° 💧 None 💨 8 mph H 56%30.27 inHg

5:00 PM

Sunny

64° 💧 None 💨 8 mph H 57%30.27 inHg

6:00 PM

Sunny

62° 💧 None 💨 7 mph H 62%30.27 inHg

7:00 PM

Sunny

58° 💧 None 💨 6 mph H 69%30.27 inHg

8:00 PM

Clear night

55° 💧 None 💨 6 mph H 76%30.27 inHg

9:00 PM

Clear night

53° 💧 None 💨 7 mph H 79%30.27 inHg

10:00 PM

Clear night

52° 💧 None 💨 7 mph H 79%30.27 inHg

11:00 PM

Clear night

51° 💧 None 💨 6 mph H 80%30.27 inHg

Friday

12:00 AM

Clear night

50° 💧 None 💨 5 mph H 81%30.27 inHg

1:00 AM

Clear night

49° 💧 None 💨 4 mph H 83%30.27 inHg

2:00 AM

Clear night

48° 💧 None 💨 5 mph H 85%30.27 inHg

3:00 AM

Clear night

47° 💧 None 💨 6 mph H 90%30.24 inHg

4:00 AM

Clear night

46° 💧 None 💨 6 mph H 90%30.24 inHg

5:00 AM

Clear night

45° 💧 None 💨 6 mph H 91%30.24 inHg

6:00 AM

Clear night

44° 💧 None 💨 5 mph H 92%30.24 inHg

7:00 AM

Clear night

44° 💧 None 💨 6 mph H 93%30.24 inHg

8:00 AM

Sunny

46° 💧 None 💨 6 mph H 90%30.27 inHg

9:00 AM

Sunny

50° 💧 None 💨 5 mph H 83%30.27 inHg

10:00 AM

Sunny

54° 💧 None 💨 6 mph H 74%30.27 inHg

11:00 AM

Sunny

58° 💧 None 💨 7 mph H 67%30.27 inHg

12:00 PM

Sunny

61° 💧 None 💨 7 mph H 60%30.24 inHg

1:00 PM

Sunny

64° 💧 None 💨 8 mph H 52%30.21 inHg

2:00 PM

Sunny

65° 💧 None 💨 8 mph H 48%30.18 inHg

3:00 PM

Sunny

66° 💧 None 💨 8 mph H 48%30.15 inHg

4:00 PM

Sunny

67° 💧 None 💨 8 mph H 48%30.15 inHg

5:00 PM

Sunny

66° 💧 None 💨 8 mph H 51%30.12 inHg

6:00 PM

Sunny

65° 💧 None 💨 5 mph H 61%30.12 inHg

7:00 PM

Sunny

60° 💧 None 💨 4 mph H 73%30.12 inHg

8:00 PM

Clear night

57° 💧 None 💨 6 mph H 76%30.12 inHg

9:00 PM

Clear night

57° 💧 None 💨 7 mph H 77%30.12 inHg

10:00 PM

Clear night

56° 💧 None 💨 7 mph H 80%30.12 inHg

11:00 PM

Clear night

55° 💧 None 💨 7 mph H 84%30.12 inHg

Saturday

12:00 AM

Mostly cloudy night

53° 💧 None 💨 7 mph H 90%30.12 inHg

1:00 AM

Mostly clear night

52° 💧 None 💨 6 mph H 92%30.12 inHg

2:00 AM

Partly cloudy night

51° 💧 None 💨 6 mph H 92%30.12 inHg

3:00 AM

Partly cloudy night

50° 💧 None 💨 6 mph H 93%30.12 inHg

4:00 AM

Mostly cloudy night

50° 💧 None 💨 6 mph H 94%30.09 inHg

5:00 AM

Mostly cloudy night

49° 💧 None 💨 6 mph H 95%30.09 inHg

6:00 AM

Overcast night

48° 💧 None 💨 5 mph H 96%30.12 inHg

7:00 AM

Partly cloudy night

48° 💧 None 💨 5 mph H 96%30.12 inHg

8:00 AM

Mostly sunny

49° 💧 None 💨 6 mph H 94%30.12 inHg

11:00 AM

Partly cloudy

61° 💧 None 💨 6 mph H 75%30.09 inHg

2:00 PM

Mostly cloudy

68° 💧 None 💨 8 mph H 54%30.03 inHg

5:00 PM

Partly cloudy

69° 💧 None 💨 11 mph H 52%29.97 inHg

8:00 PM

Overcast night

62° 💧 None 💨 9 mph H 67%29.97 inHg

11:00 PM

Overcast night

60° 💧 None 💨 7 mph H 66%30.00 inHg

Sunday

2:00 AM

Overcast night

57° 💧 None 💨 7 mph H 71%29.94 inHg

5:00 AM

Overcast night

58° 💧 None 💨 8 mph H 68%29.91 inHg

8:00 AM

Mostly sunny

55° 💧 None 💨 8 mph H 84%29.91 inHg

11:00 AM

Overcast

63° 💧 None 💨 9 mph H 67%29.91 inHg

2:00 PM

Overcast

67° 💧 None 💨 10 mph H 64%29.85 inHg

5:00 PM

Overcast

66° 💧 None 💨 8 mph H 68%29.85 inHg

8:00 PM

Overcast night

62° 💧 None 💨 7 mph H 75%29.85 inHg

11:00 PM

Overcast night

60° 💧 None 💨 6 mph H 78%29.88 inHg

Monday

2:00 AM

Overcast night

59° 💧 None 💨 5 mph H 81%29.88 inHg

5:00 AM

Overcast night

58° 💧 None 💨 3 mph H 86%29.88 inHg

8:00 AM

Overcast

58° 💧 None 💨 4 mph H 85%29.91 inHg

11:00 AM

Overcast

62° 💧 None 💨 5 mph H 74%29.94 inHg

2:00 PM

Overcast

64° 💧 None 💨 5 mph H 71%29.94 inHg

5:00 PM

Overcast

65° 💧 None 💨 5 mph H 73%29.91 inHg

8:00 PM

Overcast night

63° 💧 None 💨 1 mph H 83%29.94 inHg

11:00 PM

Mostly cloudy night

61° 💧 None 💨 2 mph H 89%29.94 inHg

Tuesday

2:00 AM

Light rain

60° 💧 None 💨 2 mph H 93%29.97 inHg

5:00 AM

Mostly cloudy night

59° 💧 None 💨 2 mph H 98%29.97 inHg

8:00 AM

Partly cloudy

57° 💧 None 💨 4 mph H 99%30.00 inHg

2:00 PM

Partly cloudy

68° 💧 None 💨 1 mph H 65%29.97 inHg

8:00 PM

Clear night

61° 💧 None 💨 3 mph H 88%30.00 inHg

Wednesday

2:00 AM

Mostly clear night

55° 💧 None 💨 1 mph H 95%30.00 inHg

8:00 AM

Overcast

53° 💧 None 💨 2 mph H 100%30.03 inHg

2:00 PM

Mostly sunny

75° 💧 None 💨 3 mph H 56%30.00 inHg

8:00 PM

Overcast night

65° 💧 None 💨 4 mph H 84%29.94 inHg

Thursday

2:00 AM

Mostly clear night

65° 💧 None 💨 9 mph H 75%29.91 inHg

8:00 AM

Mostly sunny

66° 💧 None 💨 9 mph H 78%29.85 inHg

2:00 PM

Mostly sunny

84° 💧 None 💨 14 mph H 55%29.74 inHg

8:00 PM

Overcast night

69° 💧 None 💨 11 mph H 97%29.74 inHg

Friday

2:00 AM

Overcast night

67° 💧 None 💨 10 mph H 97%29.80 inHg

8:00 AM

Overcast

62° 💧 None 💨 10 mph H 93%29.85 inHg

2:00 PM

Overcast

67° 💧 None 💨 10 mph H 76%29.91 inHg

8:00 PM

Mostly cloudy night

63° 💧 None 💨 4 mph H 77%29.97 inHg

Saturday

2:00 AM

Clear night

54° 💧 None 💨 2 mph H 92%30.00 inHg

8:00 AM

Overcast

53° 💧 None 💨 2 mph H 99%30.06 inHg

2:00 PM

Overcast

68° 💧 None 💨 1 mph H 60%30.00 inHg

8:00 PM

Mostly cloudy night

60° 💧 None 💨 3 mph H 86%29.97 inHg

Sunday

2:00 AM

Partly cloudy night

57° 💧 None 💨 2 mph H 89%29.97 inHg

8:00 AM

Partly cloudy

59° 💧 None 💨 4 mph H 90%29.94 inHg

2:00 PM

Moderate rain

72° 💧 None 💨 7 mph H 80%29.85 inHg

8:00 PM

Heavy rain

64° 💧 None 💨 5 mph H 98%29.83 inHg

Monday

2:00 AM

Light rain

57° 💧 None 💨 8 mph H 98%29.88 inHg

8:00 AM

Sunny

50° 💧 None 💨 6 mph H 97%29.97 inHg

2:00 PM

Overcast

62° 💧 None 💨 14 mph H 46%29.94 inHg

8:00 PM

Mostly cloudy night

56° 💧 None 💨 10 mph H 57%30.03 inHg

Tuesday

2:00 AM

Clear night

48° 💧 None 💨 6 mph H 80%30.06 inHg

8:00 AM

Mostly cloudy

48° 💧 None 💨 5 mph H 81%30.12 inHg

2:00 PM

Mostly sunny

66° 💧 None 💨 8 mph H 45%30.09 inHg

8:00 PM

Mostly clear night

56° 💧 None 💨 5 mph H 72%30.06 inHg

Wednesday

2:00 AM

Partly cloudy night

53° 💧 None 💨 7 mph H 78%30.03 inHg

8:00 AM

Overcast

54° 💧 None 💨 7 mph H 76%30.03 inHg

2:00 PM

Mostly sunny

71° 💧 None 💨 10 mph H 47%29.91 inHg

8:00 PM

Partly cloudy night

61° 💧 None 💨 6 mph H 69%29.85 inHg

Thursday

2:00 AM

Mostly clear night

53° 💧 None 💨 5 mph H 95%29.80 inHg

8:00 AM

Mostly sunny

53° 💧 None 💨 10 mph H 91%29.74 inHg

In Jefferson and, more broadly, across the state of Pennsylvania: This morning will start with mostly cloudy skies and mild temperatures ranging from 55 to 64 degrees Fahrenheit. Light northeast winds will blow at around 8 mph, with gusts reaching up to 19 mph. As the day progresses, the sky will remain mostly cloudy, and there is a high likelihood of rain, with total accumulation around 0.24 inches. Winds will continue to be light, but gusts may be slightly stronger during the storm. Temperatures are expected to stay within the mild range through the afternoon, making for a relatively comfortable day despite the unsettled weather. Be prepared for the possibility of rain, especially later in the day.

15-Day Weather Outlook for Jefferson

TomorrowTomorrow

Overcast 64°/49° 💧 None 💨 9 mph

Friday, Sep 25Fri Sep 25

Sunny 67°/44° 💧 None 💨 8 mph

Saturday, Sep 26Sat Sep 26

Mostly cloudy 69°/48° 💧 0.021 in 💨 11 mph

Sunday, Sep 27Sun Sep 27

Overcast 67°/55° 💧 0.001 in 💨 10 mph

Monday, Sep 28Mon Sep 28

Overcast 65°/58° 💧 0.002 in 💨 5 mph

Tuesday, Sep 29Tue Sep 29

Light rain 68°/57° 💧 0.041 in 💨 4 mph

Wednesday, Sep 30Wed Sep 30

Mostly sunny 75°/53° 💧 None 💨 4 mph

Thursday, Oct 1Thu Oct 1

Overcast 84°/65° 💧 0.383 in 💨 14 mph

Friday, Oct 2Fri Oct 2

Overcast 67°/62° 💧 0.094 in 💨 10 mph

Saturday, Oct 3Sat Oct 3

Overcast 68°/53° 💧 None 💨 3 mph

Sunday, Oct 4Sun Oct 4

Heavy rain 72°/57° 💧 0.589 in 💨 7 mph

Monday, Oct 5Mon Oct 5

Light rain 62°/50° 💧 0.687 in 💨 14 mph

Tuesday, Oct 6Tue Oct 6

Mostly cloudy 66°/48° 💧 None 💨 8 mph

Wednesday, Oct 7Wed Oct 7

Partly cloudy 71°/53° 💧 0.005 in 💨 10 mph

Thursday, Oct 8Thu Oct 8

Mostly sunny 53°/53° 💧 0.008 in 💨 10 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Jefferson

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Jefferson

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 8:00 PM

PM2.5 Fine particles Good 1,8µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 2,3µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 63,5µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 2,1µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Jefferson

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 3,1Moderate 🙂Fair

Tomorrow UV 5,0Moderate 🙂Fair

Friday UV 5,6Moderate 😐Moderate

Saturday UV 5,5Moderate 🙂Fair

Sunday UV 4,0Moderate 🙂Fair

Monday UV 6,0High —Unavailable

Tuesday UV 3,0Moderate —Unavailable

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Jefferson

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · JEFFERSON, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

Good observing conditions. Best local viewing window: 4:00 AM–5:00 AM.

65/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 8:46 PM–5:39 AM

☁ Cloud cover 45% Real hourly forecast for the best viewing hour.

☾ Moonlight 94% Waxing Gibbous · Moon about 8° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 64° high at the best hour.

✦ Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min34%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

ACTIVE NOW

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Jefferson were last refreshed today at 7:41 PM. The current forecast period extends through 25/09/2026 at 5:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.