Monroe County (Rochester)
September
Weather in Monroe County for September 2025
Your guide to Monroe County weather in September - trends and predictions
In general, the average temperature in Monroe County 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.
Monroe County 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
Monroe County 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 Monroe County
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 Monroe 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 Monroe County forecast closer to your planned date for the most up-to-date weather information.
Monroe County in September - FAQ
What are the expected maximum and minimum temperatures in Monroe County 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 Monroe County during September?
In September, Monroe County 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 Monroe County during September?
The average wind speed in Monroe County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Monroe County
Explore the daily rainfall trends and prepare for Monroe Countys September weather 💧
UV exposure in Monroe County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Monroe County?Get accurate weather forecasts for Monroe County, located at latitude 43.155 and longitude -77.616. Stay updated with localized weather information tailored for Monroe County.
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