Olmsted County (Rochester)
September
Weather in Olmsted County, Minnesota for September 2027
Your guide to Olmsted County weather in September - trends and predictions
In general, the average temperature in Olmsted County at the beginning of September is 22.1 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 22.2 °C by the end of September.
Olmsted County experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 260.4 mm.
Is September a good time to visit Olmsted County? check out the best time to travel to Olmsted County page.
✨ Is September a good time to visit Olmsted County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
21
Dry days
9
Rainy days
0
Snow days
23°/13°
Temperatures
20 km/h
Avg max wind
77 %
Avg humidity
Olmsted County Weather September
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Temperatures trend during September in Olmsted County
See the weather trend as well as the moving average line
September weather in Olmsted County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 24° /14° | 0 mm | 4 | |
| Sept. 2 |  Moderate rain | 25° /13° | 21 mm | 4 | |
| Sept. 3 |  Heavy rain | 22° /14° | 37.5 mm | 4 | |
| Sept. 4 |  Light rain | 24° /14° | 8.8 mm | 6 | |
| Sept. 5 | Overcast | 21° /14° | 0.1 mm | 3 | |
| Sept. 6 | Overcast | 19° /10° | 0.6 mm | 4 | |
| Sept. 7 |  Sunny | 20° /9° | 0 mm | 4 | |
| Sept. 8 | Heavy rain | 24° /11° | 102 mm | 4 | |
| Sept. 9 | Sunny | 26° /15° | 0.5 mm | 6 | |
| Sept. 10 |  Patchy rain possible | 25° /14° | 0.3 mm | 6 | |
| Sept. 11 | Sunny | 23° /15° | 0 mm | 6 | |
| Sept. 12 | Patchy rain possible | 25° /14° | 2.3 mm | 5 | |
| Sept. 13 | Patchy rain possible | 25° /15° | 2.1 mm | 6 | |
| Sept. 14 | Moderate rain | 24° /16° | 21.7 mm | 5 | |
| Sept. 15 |  Thundery outbreaks possible | 25° /18° | 3.3 mm | 4 | |
| Sept. 16 |  Partly cloudy | 26° /16° | 0.4 mm | 5 | |
| Sept. 17 | Light rain | 25° /15° | 3.6 mm | 4 | |
| Sept. 18 | Moderate rain | 24° /15° | 14 mm | 5 | |
| Sept. 19 | Thundery outbreaks possible | 21° /15° | 16.8 mm | 4 | |
| Sept. 20 | Moderate rain | 22° /14° | 15.4 mm | 4 | |
| Sept. 21 | Thundery outbreaks possible | 20° /13° | 2.1 mm | 4 | |
| Sept. 22 | Overcast | 18° /11° | 0.5 mm | 4 | |
| Sept. 23 |  Fog | 19° /9° | 0 mm | 5 | |
| Sept. 24 | Partly cloudy | 19° /10° | 0.9 mm | 4 | |
| Sept. 25 | Sunny | 21° /11° | 0.2 mm | 4 | |
| Sept. 26 | Sunny | 22° /11° | 0.3 mm | 5 | |
| Sept. 27 | Patchy rain possible | 22° /13° | 2 mm | 4 | |
| Sept. 28 | Fog | 23° /11° | 0 mm | 4 | |
| Sept. 29 | Patchy rain possible | 23° /12° | 2.3 mm | 4.9 | |
| Sept. 30 | Patchy rain possible | 24° /13° | 1.6 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Olmsted 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 Olmsted County forecast closer to your planned date for the most up-to-date weather information.
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Olmsted County in September - FAQ
What are the expected maximum and minimum temperatures in Olmsted County 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 Olmsted County during September?
Significant rainfall exceeding 260.4 mm is expected in Olmsted County during September, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Olmsted County during September?
The average wind speed in Olmsted County during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Olmsted County
Explore the daily rainfall trends and prepare for Olmsted Countys September weather 💧
Typically, Olmsted County has 9 rainy days in September with a total of 260.4 mm of rainfall.
UV exposure in Olmsted County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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