Chester County, PA Weather Forecast
County weather hub
Sunny
Compare major city weather across Chester County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 65. West wind 5 to 15 mph, with gusts as high as 25 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
- May 8 to May 14, 2026
- Latest sync
- May 8, 2026 2:04 AM EDT
- Forecast office
- PHI
- Source
- NOAA / NWS
Daily Outlook
This Week in Chester County
Sunday looks like the warmest upcoming period in Chester County at 74 degrees F.
Monday Night is the coolest period ahead with temperatures near 41 degrees F.
The strongest winds are forecast for Friday at about 5 to 15 mph W.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- May 8, 2026 2:04 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
Mostly cloudy, with a low around 47. Southwest wind 0 to 10 mph.
Rain showers likely between 7am and 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 66. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Showers and thunderstorms likely before 8pm. Partly cloudy, with a low around 49. Southwest wind 0 to 10 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 74. Chance of precipitation is 20%.
Rain showers. Mostly cloudy, with a low around 47. Chance of precipitation is 80%.
Rain showers. Mostly cloudy, with a high near 60. Chance of precipitation is 80%.
A slight chance of rain showers before 8pm. Partly cloudy, with a low around 41.
Sunny, with a high near 61.
A slight chance of rain showers after 2am. Partly cloudy, with a low around 44.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 65. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.
A chance of rain showers. Partly sunny, with a high near 67.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
May 8
|
Sunny
|
65°F |
5 to 15 mph
W
|
|
Friday Night
May 8
|
Mostly Cloudy
|
47°F |
0 to 10 mph
SW
|
|
Saturday
May 9
|
Rain Showers Likely
|
66°F |
5 to 10 mph
S
|
|
Saturday Night
May 9
|
Showers And Thunderstorms Likely then Partly Cloudy
|
49°F |
0 to 10 mph
SW
|
|
Sunday
May 10
|
Mostly Sunny then Slight Chance Rain Showers
|
74°F |
5 to 10 mph
W
|
|
Sunday Night
May 10
|
Rain Showers
|
47°F |
5 to 10 mph
N
|
|
Monday
May 11
|
Rain Showers
|
60°F |
5 to 10 mph
N
|
|
Monday Night
May 11
|
Slight Chance Rain Showers then Partly Cloudy
|
41°F |
5 to 10 mph
NW
|
|
Tuesday
May 12
|
Sunny
|
61°F |
5 to 10 mph
NW
|
|
Tuesday Night
May 12
|
Partly Cloudy then Slight Chance Rain Showers
|
44°F |
0 to 10 mph
SW
|
|
Wednesday
May 13
|
Chance Rain Showers
|
65°F |
0 to 10 mph
S
|
|
Wednesday Night
May 13
|
Chance Showers And Thunderstorms
|
46°F |
0 to 5 mph
SW
|
|
Thursday
May 14
|
Chance Rain Showers
|
67°F |
5 to 10 mph
NW
|
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.
