Weather in Erie County, Pennsylvania for September 2025
Fog Warning - See hour by hour.
Until now, September 2025 in Erie County has been nearly identical to the historical average, with a temperature of 20.7 °F (showing only a slight deviation of -0.5 °F).
The forecast for the next days in Erie County predicts temperatures to be around 22 °F, close to the historical average.
In general, the average temperature in Erie County at the beginning of September is 21.1 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 19.4 °F by the end of September.
The climate of Erie County in September is notably wet, with an average of 12 rainy days, and a total of 69.6 mm of precipitation.
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Erie County Weather September
Temperatures trend during September in Erie County
September weather in Erie County day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 22° /15° | 0 mm | 6 | |
| Sept. 2 |  Partly cloudy | 22° /16° | 0 mm | 6 | |
| Sept. 3 | Partly cloudy | 23° /16° | 0 mm | 6 | |
| Sept. 4 |  Heavy rain at times | 21° /15° | 8.3 mm | 5 | |
| Sept. 5 |  Overcast | 25° /10° | 0 mm | 6 | |
| Sept. 6 |  Moderate or heavy rain shower | 18° /15° | 11.2 mm | 4 | |
| Sept. 7 |  Light rain shower | 17° /15° | 5.9 mm | 4 | |
| Sept. 8 |  Cloudy | 18° /15° | 0 mm | 4 | |
| Sept. 9 | Patchy rain possible | 22° /13° | 0.9 mm | 6 | |
| Sept. 10 | Sunny | 21° /14° | 0 mm | 6 | |
| Sept. 11 | Sunny | 22° /15° | 0 mm | 6 | |
| Sept. 12 | Sunny | 22° /15° | 0 mm | 5 | |
| Sept. 13 | Sunny | 23° /15° | 0 mm | 6 | |
| Sept. 14 | Sunny | 23° /16° | 0 mm | 6 | |
| Sept. 15 | Sunny | 22° /15° | 0 mm | 1.4 | |
| Sept. 16 | Partly cloudy | 22° /17° | 0 mm | 1.3 | |
| Sept. 17 | Partly cloudy | 22° /16° | 0 mm | 1.3 | |
| Sept. 18 | Partly cloudy | 24° /14° | 0 mm | 1.4 | |
| Sept. 19 | Sunny | 23° /18° | 0 mm | 0 | |
| Sept. 20 | Sunny | 25° /15° | 0 mm | 5 | |
| Sept. 21 | Sunny | 27° /18° | 0 mm | 6 | |
| Sept. 22 | Patchy rain possible | 26° /18° | 1.6 mm | 5 | |
| Sept. 23 | Patchy rain possible | 27° /19° | 0.2 mm | 5 | |
| Sept. 24 |  Moderate rain | 19° /16° | 10.3 mm | 4 | |
| Sept. 25 | Patchy rain possible | 20° /13° | 1 mm | 4 | |
| Sept. 26 | Patchy rain possible | 18° /14° | 1.5 mm | 4 | |
| Sept. 27 | Partly cloudy | 19° /13° | 0 mm | 5 | |
| Sept. 28 | Sunny | 19° /15° | 0 mm | 5 | |
| Sept. 29 | Patchy rain possible | 21° /19° | 1.5 mm | 5 | |
| Sept. 30 | Overcast | 20° /17° | 0 mm | 5 | |
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Erie County in September - FAQ
September rainfall patterns in Erie County
UV exposure in Erie County during September
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Where is Erie County?Get accurate weather forecasts for Erie County, located at latitude 42.129 and longitude -80.085. Stay updated with localized weather information tailored for Erie County.