Rochester (NY)
September
Weather in Rochester, New York for September 2026
Your guide to Rochester weather in September - trends and predictions
Until now, September 2026 in Rochester is slightly cooler than the historical average by 0.6 °F.
The forecast for the next days in Rochester predicts temperatures to be around 18 °F, close to the historical average.
In general, the average temperature in Rochester at the beginning of September is 26.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.7 °F by the end of September.
Rochester experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 101.4 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 | 26° /13° | 7.9 mm | 5 | |
| Sept. 2 |  Overcast | 26° /14° | 3.1 mm | 5 | |
| Sept. 3 | Sunny | 27° /15° | 0.2 mm | 6 | |
| Sept. 4 | Sunny | 26° /16° | 0.9 mm | 6 | |
| Sept. 5 | Sunny | 28° /13° | 0 mm | 7 | |
| Sept. 6 |  Thundery outbreaks possible | 26° /14° | 10.4 mm | 6 | |
| Sept. 7 |  Light rain shower | 24° /12° | 9.1 mm | 6 | |
| Sept. 8 | Overcast | 22° /10° | 0.1 mm | 5 | |
| Sept. 9 | Overcast | 23° /12° | 4.7 mm | 4 | |
| Sept. 10 | Light rain shower | 22° /14° | 0.6 mm | 5 | |
| Sept. 11 | Overcast | 23° /12° | 0 mm | 5 | |
| Sept. 12 |  Mist | 26° /12° | 3.5 mm | 6 | |
| Sept. 13 | Overcast | 23° /14° | 1.6 mm | 5 | |
| Sept. 14 | Overcast | 22° /12° | 0.1 mm | 6 | |
| Sept. 15 | Sunny | 24° /11° | 1.5 mm | 5 | |
| Sept. 16 |  Cloudy | 23° /11° | 0.2 mm | 5 | |
| Sept. 17 | Patchy rain possible | 24° /13° | 0.2 mm | 4 | |
| Sept. 18 | Overcast | 23° /12° | 0.3 mm | 6 | |
| Sept. 19 | Overcast | 20° /11° | 0 mm | 4 | |
| Sept. 20 | Mist | 21° /9° | 0.3 mm | 4 | |
| Sept. 21 | Mist | 21° /10° | 0.1 mm | 4 | |
| Sept. 22 | Overcast | 23° /10° | 0 mm | 5 | |
| Sept. 23 | Overcast | 20° /12° | 6.4 mm | 5 | |
| Sept. 24 | Cloudy | 20° /11° | 0 mm | 5 | |
| Sept. 25 | Cloudy | 22° /15° | 60.3 mm | 5 | |
| Sept. 26 | Overcast | 19° /15° | 0 mm | 4.1 | |
| Sept. 27 | Sunny | 17° /14° | 10.1 mm | 3.8 | |
| Sept. 28 | Patchy rain possible | 16° /15° | 2.3 mm | 2.4 | |
| Sept. 29 | Patchy rain possible | 17° /14° | 0.3 mm | 2.5 | |
| Sept. 30 | Overcast | 20° /16° | 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?
Significant rainfall exceeding 101.4 mm is expected in Rochester during September, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
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 💧
Typically, Rochester has 7 rainy days in September with a total of 101.4 mm of rainfall.
UV exposure in Rochester during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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