Northumberland, PA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Northumberland, PA in one place.
Mostly sunny, with a high near 64. Southeast wind around 5 mph.
Local Weather Overview
This forecast page for Northumberland, PA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 15, 2026 5:29 PM EDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Northumberland, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 5:29 PM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Northumberland
Friday looks like the warmest upcoming period in Northumberland at 77 degrees F.
Saturday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Saturday at about 10 to 15 mph N.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 5:29 PM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- CTP
- Radar station
- KCCX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Rain showers after midnight. Mostly cloudy, with a low around 57. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain showers likely before 8am, then a chance of showers and thunderstorms between 2pm and 3pm, then showers and thunderstorms. Mostly cloudy. High near 77, with temperatures falling to around 70 in the afternoon. Southwest wind around 12 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers before 8pm. Mostly cloudy, with a low around 42. Northwest wind 8 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Mostly sunny, with a high near 50. North wind 10 to 15 mph, with gusts as high as 28 mph.
Widespread frost after 2am. Clear, with a low around 33.
Widespread frost before 10am. Sunny, with a high near 58.
Areas of frost after 4am. Clear, with a low around 35.
Areas of frost before 9am. Sunny, with a high near 62.
Mostly clear, with a low around 39.
Mostly sunny, with a high near 66.
Partly cloudy, with a low around 42.
Sunny, with a high near 65.
Mostly clear, with a low around 40.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Mostly Sunny
|
64°F |
5 mph
SE
|
|
Tonight
Oct 15
|
Mostly Cloudy then Rain Showers
|
57°F |
5 to 10 mph
S
|
|
Friday
Oct 16
|
Rain Showers Likely then Chance Showers And Thunderstorms
|
77°F |
12 mph
SW
|
|
Friday Night
Oct 16
|
Chance Rain Showers then Mostly Cloudy
|
42°F |
8 to 13 mph
NW
|
|
Saturday
Oct 17
|
Mostly Sunny
|
50°F |
10 to 15 mph
N
|
|
Saturday Night
Oct 17
|
Clear then Widespread Frost
|
33°F |
0 to 8 mph
N
|
|
Sunday
Oct 18
|
Widespread Frost then Sunny
|
58°F |
2 mph
W
|
|
Sunday Night
Oct 18
|
Clear then Areas Of Frost
|
35°F |
2 mph
S
|
|
Monday
Oct 19
|
Areas Of Frost then Sunny
|
62°F |
2 mph
S
|
|
Monday Night
Oct 19
|
Mostly Clear
|
39°F |
1 mph
E
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
66°F |
1 mph
N
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
42°F |
1 mph
N
|
|
Wednesday
Oct 21
|
Sunny
|
65°F |
2 mph
N
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
40°F |
1 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Northumberland.
