Rochester
September
Weather in Rochester 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 sees moderate rainfall in September, averaging 6 rainy days.
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24
Dry days
6
Rainy days
0
Snow days
24°/12°
Temperatures
16 km/h
Avg max wind
72 %
Avg humidity
Rochester in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2  23° | 3 27° | 4  29° | 5 30° | 6 30° | 7  26° |
| 8 21° | 9 20° | 10 20° | 11  23° | 12 26° | 13 21° | 14 23° |
| 15 24° | 16  24° | 17 23° | 18 22° | 19 22° | 20 23° | 21 24° |
| 22 25° | 23 19° | 24 19° | 25 22° | 26 23° | 27 20° | 28 19° |
| 29 22° | 30 22° |
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Temperatures trend during September in Rochester
See the weather trend as well as the moving average line
September weather 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.
Rochester in September - FAQ
What are the expected maximum and minimum temperatures in Rochester during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Rochester during September?
In September, Rochester can expect light to moderate rainfall, totaling 29.2 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
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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