Chester County, PA Weather Forecast
County weather hub
Patchy Fog then Sunny
Compare major city weather across Chester County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Patchy fog before 10am. Sunny, with a high near 76. Southwest wind 0 to 10 mph.
County Weather Overview
This county weather page brings together forecast coverage for Chester County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 22 of 22 mapped cities in Chester County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 13 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 1:53 AM EDT
- Forecast office
- PHI
- Source
- NOAA / NWS
Daily Outlook
This Week in Chester County
Wednesday looks like the warmest upcoming period in Chester County at 79 degrees F.
Saturday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Saturday at about 15 to 20 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 1:53 AM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- PHI
- Radar station
- KDIX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 64. Southwest wind 5 to 10 mph.
Sunny, with a high near 79. West wind 5 to 10 mph.
A chance of rain showers between 8pm and 2am. Mostly cloudy, with a low around 56. Northwest wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 66.
A slight chance of rain showers between 8pm and 2am, then showers and thunderstorms likely. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Rain showers likely before 8pm. Partly cloudy, with a low around 43. Chance of precipitation is 60%.
Sunny, with a high near 53.
Mostly clear, with a low around 36.
Sunny, with a high near 56.
Mostly clear, with a low around 39.
Sunny, with a high near 62.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Patchy Fog then Sunny
|
76°F |
0 to 10 mph
SW
|
|
Tuesday Night
Oct 13
|
Clear
|
64°F |
5 to 10 mph
SW
|
|
Wednesday
Oct 14
|
Sunny
|
79°F |
5 to 10 mph
W
|
|
Wednesday Night
Oct 14
|
Chance Rain Showers
|
56°F |
5 mph
NW
|
|
Thursday
Oct 15
|
Mostly Sunny
|
66°F |
0 to 5 mph
NE
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms Likely
|
54°F |
0 to 5 mph
SE
|
|
Friday
Oct 16
|
Showers And Thunderstorms Likely
|
71°F |
10 to 15 mph
SW
|
|
Friday Night
Oct 16
|
Rain Showers Likely then Partly Cloudy
|
43°F |
15 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
53°F |
15 to 20 mph
NW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
36°F |
5 to 10 mph
NW
|
|
Sunday
Oct 18
|
Sunny
|
56°F |
5 mph
W
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
39°F |
0 to 5 mph
SW
|
|
Monday
Oct 19
|
Sunny
|
62°F |
0 to 5 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Chester County.
Coverage
Forecast coverage currently spans 22 of 22 mapped cities in Chester County.
Largest mapped city population in this region: 20,048.
