Northumberland County, PA Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Northumberland County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 67. Northeast wind 1 to 5 mph.
County Weather Overview
This county weather page brings together forecast coverage for Northumberland County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 5 of 5 mapped cities in Northumberland County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 14, 2026 8:55 AM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Northumberland County
Friday looks like the warmest upcoming period in Northumberland County at 74 degrees F.
Saturday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Saturday at about 12 to 16 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 14, 2026 8:55 AM EDT
- Coverage
- 6 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
A chance of rain showers between 8pm and 2am, then showers and thunderstorms. Mostly cloudy, with a low around 54. South wind 2 to 10 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a high near 74. Southwest wind around 12 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Rain showers before 2am. Mostly cloudy, with a low around 39. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunny, with a high near 52.
Widespread frost after midnight. Clear, with a low around 33.
Widespread frost before 9am. Sunny, with a high near 61.
Mostly clear, with a low around 35.
Mostly sunny, with a high near 64.
Partly cloudy, with a low around 41.
Partly sunny, with a high near 66.
Partly cloudy, with a low around 42.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Mostly Sunny
|
67°F |
1 to 5 mph
NE
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms
|
54°F |
2 to 10 mph
S
|
|
Friday
Oct 16
|
Showers And Thunderstorms
|
74°F |
12 mph
SW
|
|
Friday Night
Oct 16
|
Rain Showers
|
39°F |
12 to 15 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
52°F |
12 to 16 mph
NW
|
|
Saturday Night
Oct 17
|
Clear then Widespread Frost
|
33°F |
1 to 8 mph
W
|
|
Sunday
Oct 18
|
Widespread Frost then Sunny
|
61°F |
1 to 5 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
35°F |
0 to 3 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
64°F |
0 to 5 mph
SW
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
41°F |
2 mph
S
|
|
Tuesday
Oct 20
|
Partly Sunny
|
66°F |
1 mph
W
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
42°F |
1 mph
NW
|
Major City Forecasts
Live forecast snapshots for major cities across Northumberland County.
Coverage
Forecast coverage currently spans 5 of 5 mapped cities in Northumberland County.
Largest mapped city population in this region: 9,322.
