Chester County, PA Weather Forecast
County weather hub
Slight Chance Rain Showers then Mostly Cloudy
Compare major city weather across Chester County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of rain showers before 8am. Mostly cloudy, with a high near 76. East wind around 5 mph. Chance of precipitation is 20%.
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 26 to May 31, 2026
- Latest sync
- May 25, 2026 4:28 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 80 degrees F.
Thursday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Thursday at about 5 to 10 mph N.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- May 25, 2026 4:28 AM EDT
- Coverage
- 6 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 60. Southwest wind 0 to 5 mph.
Partly sunny, with a high near 80.
Mostly cloudy, with a low around 61.
Mostly sunny, with a high near 77.
Mostly clear, with a low around 53.
Sunny, with a high near 74.
Mostly clear, with a low around 53.
Mostly sunny, with a high near 74.
A slight chance of rain showers after 2am. Partly cloudy, with a low around 53.
A slight chance of rain showers before 8am. Mostly sunny, with a high near 70.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
May 26
|
Slight Chance Rain Showers then Mostly Cloudy
|
76°F |
5 mph
E
|
|
Tuesday Night
May 26
|
Mostly Cloudy
|
60°F |
0 to 5 mph
SW
|
|
Wednesday
May 27
|
Partly Sunny
|
80°F |
5 mph
W
|
|
Wednesday Night
May 27
|
Mostly Cloudy
|
61°F |
5 mph
NW
|
|
Thursday
May 28
|
Mostly Sunny
|
77°F |
5 to 10 mph
N
|
|
Thursday Night
May 28
|
Mostly Clear
|
53°F |
5 to 10 mph
N
|
|
Friday
May 29
|
Sunny
|
74°F |
5 to 10 mph
NW
|
|
Friday Night
May 29
|
Mostly Clear
|
53°F |
5 mph
W
|
|
Saturday
May 30
|
Mostly Sunny
|
74°F |
5 to 10 mph
NW
|
|
Saturday Night
May 30
|
Partly Cloudy then Slight Chance Rain Showers
|
53°F |
5 mph
NW
|
|
Sunday
May 31
|
Slight Chance Rain Showers then Mostly Sunny
|
70°F |
5 to 10 mph
N
|
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.
