Rochester (NY)
September
Weather in Rochester, New York for September 2025
Your guide to Rochester weather in September - trends and predictions
Until now, September 2025 in Rochester is slightly cooler than the historical average by -1.8 °F.
The forecast for the next days in Rochester predicts temperatures to be around 24 °F, close to the historical average.
In general, the average temperature in Rochester at the beginning of September is 25.6 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 22.7 °F by the end of September.
Rochester experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 50.9 mm.
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Temperatures
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
23°/13°
Temperatures
16 km/h
Avg max wind
74 %
Avg humidity
Rochester Weather September
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Temperatures trend during September in Rochester
See the weather trend as well as the moving average line
September weather in Rochester day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 24° /11° | 0.4 mm | 6 | |
| Sept. 2 |  Overcast | 23° /12° | 0 mm | 5 | |
| Sept. 3 | Sunny | 27° /13° | 0 mm | 7 | |
| Sept. 4 |  Thundery outbreaks possible | 26° /16° | 1.2 mm | 6 | |
| Sept. 5 | Sunny | 29° /13° | 0 mm | 7 | |
| Sept. 6 | Thundery outbreaks possible | 27° /15° | 13.8 mm | 6 | |
| Sept. 7 |  Light rain shower | 23° /12° | 12.1 mm | 5 | |
| Sept. 8 | Overcast | 21° /10° | 0.1 mm | 5 | |
| Sept. 9 | Overcast | 22° /11° | 1.3 mm | 5 | |
| Sept. 10 | Light rain shower | 21° /13° | 0.8 mm | 5 | |
| Sept. 11 |  Mist | 24° /12° | 0 mm | 5 | |
| Sept. 12 | Mist | 25° /13° | 0.4 mm | 6 | |
| Sept. 13 | Overcast | 22° /14° | 0 mm | 5 | |
| Sept. 14 | Overcast | 24° /13° | 0 mm | 6 | |
| Sept. 15 | Mist | 24° /14° | 0 mm | 1.4 | |
| Sept. 16 | Mist | 24° /9° | 0 mm | 1.3 | |
| Sept. 17 |  Partly cloudy | 25° /10° | 0 mm | 1.2 | |
| Sept. 18 | Sunny | 26° /15° | 0 mm | 1.3 | |
| Sept. 19 | Partly cloudy | 19° /14° | 0 mm | 0 | |
| Sept. 20 | Sunny | 17° /8° | 0 mm | 4 | |
| Sept. 21 | Sunny | 26° /10° | 0 mm | 5 | |
| Sept. 22 | Patchy rain possible | 27° /15° | 1.1 mm | 4 | |
| Sept. 23 | Patchy rain possible | 26° /16° | 2.9 mm | 5 | |
| Sept. 24 | Partly cloudy | 21° /17° | 0.1 mm | 5 | |
| Sept. 25 | Patchy rain possible | 21° /16° | 0 mm | 4 | |
| Sept. 26 | Sunny | 24° /14° | 0 mm | 5 | |
| Sept. 27 | Sunny | 26° /17° | 0 mm | 6 | |
| Sept. 28 | Sunny | 23° /17° | 0 mm | 5 | |
| Sept. 29 | Patchy rain possible | 22° /14° | 0 mm | 5 | |
| Sept. 30 | Overcast | 22° /14° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Rochester 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 Rochester forecast closer to your planned date for the most up-to-date weather information.
Change Month
Rochester in September - FAQ
What are the expected maximum and minimum temperatures in Rochester during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Rochester during September?
Moderate rainfall is anticipated in Rochester during September, with a total of 50.9 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Rochester during September?
The average wind speed in Rochester during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Rochester
Explore the daily rainfall trends and prepare for Rochesters September weather 💧
UV exposure in Rochester during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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