Chester County, PA Weather Forecast
County weather hub
Mostly Sunny then Showers And Thunderstorms Likely
Compare major city weather across Chester County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
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
- Jul 10 to Jul 14, 2026
- Latest sync
- Jul 8, 2026 4:28 AM EDT
- Forecast office
- PHI
- Source
- NOAA / NWS
Daily Outlook
This Week in Chester County
Tuesday looks like the warmest upcoming period in Chester County at 89 degrees F.
Saturday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Friday at about 5 to 10 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 8, 2026 4:28 AM EDT
- Coverage
- 5 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
Showers and thunderstorms likely before 8pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
A slight chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Mostly sunny, with a high near 82.
A slight chance of rain showers between 8pm and 2am. Partly cloudy, with a low around 65.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84.
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 67.
Sunny, with a high near 89.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 10
|
Mostly Sunny then Showers And Thunderstorms Likely
|
85°F |
5 to 10 mph
W
|
|
Friday Night
Jul 10
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
68°F |
5 mph
NW
|
|
Saturday
Jul 11
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
81°F |
5 mph
N
|
|
Saturday Night
Jul 11
|
Chance Showers And Thunderstorms then Partly Cloudy
|
62°F |
0 to 5 mph
NE
|
|
Sunday
Jul 12
|
Mostly Sunny
|
82°F |
0 to 5 mph
E
|
|
Sunday Night
Jul 12
|
Slight Chance Rain Showers
|
65°F |
0 to 5 mph
E
|
|
Monday
Jul 13
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
84°F |
0 to 5 mph
N
|
|
Monday Night
Jul 13
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
67°F |
5 mph
SW
|
|
Tuesday
Jul 14
|
Sunny
|
89°F |
5 to 10 mph
W
|
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.
