Rochester (NY)
September
Weather in Rochester, New York for September 2025
Your guide to Rochester weather in September - trends and predictions
In general, the average temperature in Rochester at the beginning of September is 27.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21 °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 🌧️
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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 | 25° /12° | 0.6 mm | 6 | |
| Sept. 2 |  Overcast | 23° /12° | 0 mm | 6 | |
| Sept. 3 | Sunny | 27° /13° | 0 mm | 7 | |
| Sept. 4 |  Thundery outbreaks possible | 29° /17° | 0 mm | 7 | |
| Sept. 5 | Sunny | 30° /16° | 0 mm | 8 | |
| Sept. 6 | Thundery outbreaks possible | 30° /16° | 1 mm | 7 | |
| Sept. 7 |  Light rain shower | 26° /14° | 18.2 mm | 6 | |
| Sept. 8 | Overcast | 21° /12° | 0.1 mm | 5 | |
| Sept. 9 | Overcast | 20° /12° | 1.9 mm | 5 | |
| Sept. 10 | Light rain shower | 20° /15° | 1.2 mm | 5 | |
| Sept. 11 |  Mist | 23° /13° | 0 mm | 5 | |
| Sept. 12 | Mist | 26° /13° | 0.6 mm | 7 | |
| Sept. 13 | Overcast | 21° /14° | 0 mm | 6 | |
| Sept. 14 | Overcast | 23° /13° | 0 mm | 6 | |
| Sept. 15 | Sunny | 24° /12° | 0 mm | 7 | |
| Sept. 16 |  Cloudy | 24° /10° | 0 mm | 6 | |
| Sept. 17 | Patchy rain possible | 23° /12° | 0.2 mm | 5 | |
| Sept. 18 | Patchy rain possible | 22° /12° | 0.6 mm | 5 | |
| Sept. 19 | Overcast | 22° /13° | 0 mm | 5 | |
| Sept. 20 | Mist | 23° /8° | 0 mm | 5 | |
| Sept. 21 | Mist | 24° /10° | 0 mm | 6 | |
| Sept. 22 | Mist | 25° /8° | 0 mm | 6 | |
| Sept. 23 | Overcast | 19° /12° | 11.2 mm | 5 | |
| Sept. 24 | Cloudy | 19° /11° | 0 mm | 4 | |
| Sept. 25 | Cloudy | 22° /14° | 12.5 mm | 5 | |
| Sept. 26 | Overcast | 23° /13° | 2.9 mm | 5 | |
| Sept. 27 | Overcast | 20° /9° | 0 mm | 5 | |
| Sept. 28 | Cloudy | 19° /12° | 0 mm | 5 | |
| Sept. 29 | Patchy rain possible | 22° /14° | 0 mm | 5 | |
| Sept. 30 | Overcast | 22° /14° | 0 mm | 5 | |
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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.
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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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