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United States weather

Weather in Green Bay, Wisconsin for September 2027

Your guide to Green Bay weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Green Bay at the beginning of September is 22.4 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 22.1 °C by the end of September.

    • Rain 🌧️

  • Green Bay experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 239.6 mm.

    • More

  • Is September a good time to visit Green Bay? check out the best time to travel to Green Bay page.

  • ✨ Is September a good time to visit Green Bay? – Ask the AI Weatherman

Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/12°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Green Bay Weather September

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

Temperatures trend during September in Green Bay

See the weather trend as well as the moving average line

September weather in Green Bay day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Partly cloudy
Partly cloudy
 27° /15° 0 mm 6
Sept. 2 Heavy rain
Heavy rain
 24° /13° 158.2 mm 4
Sept. 3 Moderate rain
Moderate rain
 23° /13° 13.7 mm 5
Sept. 4 Moderate rain
Moderate rain
 22° /11° 18.2 mm 3
Sept. 5 Light rain
Light rain
 22° /14° 5.5 mm 3
Sept. 6 Patchy rain possible
Patchy rain possible
 19° /9° 0.1 mm 5
Sept. 7 Overcast
Overcast
 20° /7° 0 mm 4
Sept. 8 Moderate rain
Moderate rain
 22° /9° 11.4 mm 4
Sept. 9 Overcast
Overcast
 26° /14° 0 mm 6
Sept. 10 Cloudy
Cloudy
 25° /14° 0 mm 6
Sept. 11 Patchy rain possible
Patchy rain possible
 25° /14° 0 mm 6
Sept. 12 Sunny
Sunny
 26° /14° 0.2 mm 5
Sept. 13 Light rain
Light rain
 23° /14° 4.1 mm 5
Sept. 14 Patchy rain possible
Patchy rain possible
 25° /12° 1.7 mm 6
Sept. 15 Light rain
Light rain
 27° /15° 5.1 mm 4
Sept. 16 Sunny
Sunny
 26° /13° 0 mm 5
Sept. 17 Partly cloudy
Partly cloudy
 25° /14° 0.2 mm 5
Sept. 18 Light rain
Light rain
 22° /13° 5.4 mm 4
Sept. 19 Mist
Mist
 20° /12° 0.9 mm 4
Sept. 20 Light rain
Light rain
 20° /14° 7 mm 4
Sept. 21 Sunny
Sunny
 22° /13° 0 mm 4
Sept. 22 Patchy rain possible
Patchy rain possible
 18° /13° 1.3 mm 4
Sept. 23 Sunny
Sunny
 20° /11° 0 mm 5
Sept. 24 Fog
Fog
 20° /10° 0 mm 4
Sept. 25 Mist
Mist
 22° /12° 0.1 mm 4
Sept. 26 Mist
Mist
 21° /11° 0 mm 4
Sept. 27 Fog
Fog
 24° /10° 0 mm 4
Sept. 28 Fog
Fog
 23° /11° 0 mm 4.8
Sept. 29 Fog
Fog
 23° /11° 0.1 mm 4
Sept. 30 Light rain
Light rain
 22° /12° 6.3 mm 4
Next
Important Notice
Our weather forecast for Green Bay 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 Green Bay forecast closer to your planned date for the most up-to-date weather information.
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Green Bay in September - FAQ

What are the expected maximum and minimum temperatures in Green Bay during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Green Bay during September?
Significant rainfall exceeding 239.6 mm is expected in Green Bay during September, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Green Bay during September?
The average wind speed in Green Bay during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Green Bay

Explore the daily rainfall trends and prepare for Green Bays September weather 💧
Typically, Green Bay has 6 rainy days in September with a total of 239.6 mm of rainfall.

UV exposure in Green Bay during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Get accurate weather forecasts for Green Bay, located at latitude 44.519 and longitude -88.02. Stay updated with localized weather information tailored for Green Bay.

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