Erie County (Buffalo)
September
Weather in Erie County, New York for September 2025
Your guide to Erie County weather in September - trends and predictions
Until now, September 2025 in Erie County has been significantly cooler than historical averages by -2 °F, with average temperature of 22.2 °F.
The forecast for the next days in Erie County predicts temperatures to be around 25 °F, close to the historical average.
In general, the average temperature in Erie County at the beginning of September is 24.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.4 °F by the end of September.
Erie County experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 29.2 mm.
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Temperatures
Rain 🌧️
More
22
Dry days
8
Rainy days
0
Snow days
24°/14°
Temperatures
14 km/h
Avg max wind
70 %
Avg humidity
Erie County Weather September
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Temperatures trend during September in Erie County
See the weather trend as well as the moving average line
September weather in Erie County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 26° /13° | 0.4 mm | 6 | |
| Sept. 2 |  Overcast | 22° /14° | 0 mm | 5 | |
| Sept. 3 |  Cloudy | 25° /14° | 0 mm | 6 | |
| Sept. 4 | Overcast | 26° /16° | 0 mm | 6 | |
| Sept. 5 | Partly cloudy | 28° /15° | 0 mm | 7 | |
| Sept. 6 |  Thundery outbreaks possible | 26° /17° | 2 mm | 6 | |
| Sept. 7 | Thundery outbreaks possible | 21° /14° | 9 mm | 5 | |
| Sept. 8 |  Light rain shower | 21° /13° | 1.6 mm | 5 | |
| Sept. 9 |  Mist | 23° /13° | 0.6 mm | 5 | |
| Sept. 10 | Light rain shower | 22° /14° | 5.3 mm | 5 | |
| Sept. 11 | Mist | 25° /13° | 0 mm | 6 | |
| Sept. 12 | Overcast | 26° /14° | 1.1 mm | 6 | |
| Sept. 13 | Overcast | 23° /14° | 0 mm | 5 | |
| Sept. 14 | Mist | 25° /13° | 0 mm | 6 | |
| Sept. 15 |  Sunny | 28° /13° | 0 mm | 1.4 | |
| Sept. 16 | Partly cloudy | 25° /13° | 0 mm | 1.4 | |
| Sept. 17 | Partly cloudy | 25° /13° | 0 mm | 1.3 | |
| Sept. 18 | Mist | 27° /14° | 0 mm | 1.4 | |
| Sept. 19 | Sunny | 25° /15° | 0 mm | 0 | |
| Sept. 20 | Sunny | 27° /11° | 0 mm | 5 | |
| Sept. 21 | Sunny | 30° /17° | 0 mm | 6 | |
| Sept. 22 | Patchy rain possible | 28° /19° | 0.2 mm | 5 | |
| Sept. 23 | Patchy rain possible | 29° /20° | 0.2 mm | 5 | |
| Sept. 24 |  Moderate rain | 19° /16° | 8.5 mm | 4 | |
| Sept. 25 | Patchy rain possible | 21° /14° | 0.1 mm | 4 | |
| Sept. 26 | Patchy rain possible | 22° /15° | 1.1 mm | 4 | |
| Sept. 27 | Patchy rain possible | 21° /14° | 0.2 mm | 4 | |
| Sept. 28 | Partly cloudy | 22° /14° | 0 mm | 5 | |
| Sept. 29 | Patchy rain possible | 22° /16° | 0.2 mm | 5 | |
| Sept. 30 | Overcast | 23° /14° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Erie County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Erie County forecast closer to your planned date for the most up-to-date weather information.
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Erie County in September - FAQ
What are the expected maximum and minimum temperatures in Erie County during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Erie County during September?
In September, Erie County can expect light to moderate rainfall, totaling 29.2 mm across approximately 8 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Erie County during September?
The average wind speed in Erie County during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Erie County
Explore the daily rainfall trends and prepare for Erie Countys September weather 💧
UV exposure in Erie County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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