Mason County (Lake Michigan)
September
Weather in Mason County, Michigan for September 2027
Your guide to Mason County weather in September - trends and predictions
In general, the average temperature in Mason County at the beginning of September is 21.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 18.9 °C by the end of September.
Mason County experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 262 mm.
Is September a good time to visit Mason County? check out the best time to travel to Mason County page.
✨ Is September a good time to visit Mason County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
22
Dry days
8
Rainy days
0
Snow days
21°/15°
Temperatures
22 km/h
Avg max wind
75 %
Avg humidity
Mason County Weather September
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Temperatures trend during September in Mason County
See the weather trend as well as the moving average line
September weather in Mason County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 23° /16° | 0 mm | 5 | |
| Sept. 2 |  Light rain | 21° /15° | 3 mm | 3 | |
| Sept. 3 |  Heavy rain | 22° /15° | 55.2 mm | 5 | |
| Sept. 4 | Heavy rain | 21° /15° | 92 mm | 4 | |
| Sept. 5 |  Moderate rain | 22° /16° | 10.7 mm | 4 | |
| Sept. 6 |  Patchy rain possible | 20° /13° | 0.9 mm | 5 | |
| Sept. 7 | Light rain | 19° /13° | 3.3 mm | 4 | |
| Sept. 8 | Patchy rain possible | 21° /13° | 2.2 mm | 4 | |
| Sept. 9 | Light rain | 22° /17° | 5 mm | 4 | |
| Sept. 10 | Overcast | 21° /15° | 0 mm | 5 | |
| Sept. 11 |  Cloudy | 21° /14° | 0 mm | 5 | |
| Sept. 12 |  Sunny | 23° /15° | 0 mm | 5 | |
| Sept. 13 | Moderate rain | 23° /17° | 20.7 mm | 5 | |
| Sept. 14 | Sunny | 23° /15° | 0.1 mm | 6 | |
| Sept. 15 | Moderate rain | 24° /16° | 12.9 mm | 4 | |
| Sept. 16 | Sunny | 22° /16° | 0 mm | 4 | |
| Sept. 17 | Overcast | 21° /15° | 0.1 mm | 4 | |
| Sept. 18 |  Partly cloudy | 21° /15° | 0.4 mm | 4 | |
| Sept. 19 | Overcast | 20° /14° | 0.8 mm | 4 | |
| Sept. 20 |  Moderate rain at times | 21° /16° | 6.1 mm | 4 | |
| Sept. 21 | Moderate rain | 19° /14° | 23.2 mm | 3 | |
| Sept. 22 | Moderate or heavy rain shower | 19° /14° | 7.6 mm | 3 | |
| Sept. 23 | Light rain | 19° /14° | 7 mm | 5 | |
| Sept. 24 | Moderate or heavy rain shower | 19° /13° | 6.6 mm | 4 | |
| Sept. 25 | Overcast | 18° /15° | 0.9 mm | 4 | |
| Sept. 26 | Overcast | 18° /13° | 0 mm | 4 | |
| Sept. 27 | Sunny | 19° /13° | 0 mm | 5 | |
| Sept. 28 | Sunny | 19° /13° | 0 mm | 4.9 | |
| Sept. 29 | Partly cloudy | 18° /11° | 0 mm | 4.9 | |
| Sept. 30 | Light rain | 20° /15° | 3.2 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Mason 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 Mason County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Mason County in September - FAQ
What are the expected maximum and minimum temperatures in Mason County during September?
During September, expect a variety of temperatures with highs around 21° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Mason County during September?
Significant rainfall exceeding 262 mm is expected in Mason County during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Mason County during September?
The average wind speed in Mason County during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Mason County
Explore the daily rainfall trends and prepare for Mason Countys September weather 💧
Typically, Mason County has 8 rainy days in September with a total of 262 mm of rainfall.
UV exposure in Mason County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Mason County
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