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United States weather

Weather in Grand Traverse County, Michigan for September 2025

Your guide to Grand Traverse County weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Grand Traverse County is cooler than usual, with temperatures averaging 20.6 °F, this is -2.3 °F below the typical seasonal average.

  • The forecast for the upcoming days in Grand Traverse County predicts a temperature of 26.2 °F, which is slightly above the historical average.

  • In general, the average temperature in Grand Traverse County at the beginning of September is 20.1 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 25.6 °F by the end of September.

    • Rain 🌧️

  • With an average of 3 rainy days, Grand Traverse County experiences minimal rainfall in September.

    • More

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Average dry days
27
Dry days
Average rainy days
3
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/13°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
65 %
Avg humidity

Grand Traverse County Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Patchy rain possible
23°
2
Sunny
23°
3
Sunny
22°
4
Sunny
21°
5
Sunny
22°
6
Light rain shower
15°
7
Patchy rain possible
15°
8
Partly cloudy
21°
9
Sunny
23°
10
Sunny
23°
11
Patchy rain possible
28°
12
Sunny
26°
13
Sunny
28°
14
Partly cloudy
30°
15
Sunny
31°
16
Sunny
29°
17
Sunny
29°
18
Sunny
26°
19
Partly cloudy
24°
20
Sunny
25°
21
Patchy rain possible
20°
22
Patchy rain possible
26°
23
Moderate rain
23°
24
Sunny
23°
25
Sunny
27°
26
Partly cloudy
29°
27
Patchy rain possible
28°
28
Sunny
32°
29
Fog
19°
30
Fog
21°

Temperatures trend during September in Grand Traverse County

See the weather trend as well as the moving average line

September weather in Grand Traverse County day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Patchy rain possible
Patchy rain possible
 23° /12° 0.2 mm 6
Sept. 2 Sunny
Sunny
 23° /12° 0 mm 7
Sept. 3 Sunny
Sunny
 22° /12° 17 mm 6
Sept. 4 Sunny
Sunny
 21° /10° 0 mm 5
Sept. 5 Sunny
Sunny
 22° /12° 3.9 mm 5
Sept. 6 Light rain shower
Light rain shower
 15° /10° 3.8 mm 4
Sept. 7 Patchy rain possible
Patchy rain possible
 15° /9° 6.2 mm 4
Sept. 8 Partly cloudy
Partly cloudy
 21° /7° 0 mm 6
Sept. 9 Sunny
Sunny
 23° /13° 0 mm 6
Sept. 10 Sunny
Sunny
 23° /12° 0 mm 6
Sept. 11 Patchy rain possible
Patchy rain possible
 28° /13° 0.1 mm 6
Sept. 12 Sunny
Sunny
 26° /14° 1.5 mm 7
Sept. 13 Sunny
Sunny
 28° /16° 0 mm 7
Sept. 14 Partly cloudy
Partly cloudy
 30° /15° 0 mm 8
Sept. 15 Sunny
Sunny
 31° /17° 0 mm 8
Sept. 16 Sunny
Sunny
 29° /13° 0 mm 1.4
Sept. 17 Sunny
Sunny
 29° /14° 0 mm 1.3
Sept. 18 Sunny
Sunny
 26° /15° 0 mm 1.3
Sept. 19 Partly cloudy
Partly cloudy
 24° /13° 0 mm 1.3
Sept. 20 Sunny
Sunny
 25° /12° 0 mm 0
Sept. 21 Patchy rain possible
Patchy rain possible
 20° /12° 1 mm 4
Sept. 22 Patchy rain possible
Patchy rain possible
 26° /16° 0.6 mm 5
Sept. 23 Moderate rain
Moderate rain
 23° /18° 17.2 mm 4
Sept. 24 Sunny
Sunny
 23° /16° 0 mm 5
Sept. 25 Sunny
Sunny
 27° /14° 0 mm 5
Sept. 26 Partly cloudy
Partly cloudy
 29° /17° 0 mm 6
Sept. 27 Patchy rain possible
Patchy rain possible
 28° /20° 0.7 mm 5
Sept. 28 Sunny
Sunny
 32° /21° 0 mm 7
Sept. 29 Fog
Fog
 19° /10° 0 mm 4
Sept. 30 Fog
Fog
 21° /9° 0 mm 5
Next
Important Notice
Our weather forecast for Grand Traverse 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 Grand Traverse County forecast closer to your planned date for the most up-to-date weather information.
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Grand Traverse County in September - FAQ

What are the expected maximum and minimum temperatures in Grand Traverse County during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Grand Traverse County during September?
Expect minimal rainfall in Grand Traverse County during September, with a total of 19.7 mm over approximately 3 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Grand Traverse County during September?
The average wind speed in Grand Traverse County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Grand Traverse County

Explore the daily rainfall trends and prepare for Grand Traverse Countys September weather 💧

UV exposure in Grand Traverse County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Traverse City
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Location coordinates Where is Grand Traverse County?

Get accurate weather forecasts for Grand Traverse County, located at latitude 44.763 and longitude -85.621. Stay updated with localized weather information tailored for Grand Traverse County.

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