Allen County
September
Weather in Allen County for September 2025
Your guide to Allen County weather in September - trends and predictions
In general, the average temperature in Allen County at the beginning of September is 28.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23 °F by the end of September.
The climate of Allen County in September is notably wet, with an average of 11 rainy days.
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19
Dry days
11
Rainy days
0
Snow days
26°/12°
Temperatures
17 km/h
Avg max wind
70 %
Avg humidity
Allen County in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2 29° | 3  30° | 4  33° | 5  32° | 6  27° | 7 21° |
| 8 21° | 9 27° | 10 29° | 11 30° | 12 27° | 13 26° | 14 28° |
| 15 29° | 16 28° | 17  24° | 18 25° | 19  24° | 20 28° | 21  29° |
| 22 26° | 23 24° | 24 24° | 25 22° | 26 25° | 27  22° | 28 22° |
| 29 22° | 30 24° |
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Temperatures trend during September in Allen County
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September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Sunny | 28° /11° | 0 mm | 7 | |
| Sept. 2 | Sunny | 29° /11° | 0 mm | 7 | |
| Sept. 3 | Mist | 30° /13° | 0 mm | 7 | |
| Sept. 4 | Partly cloudy | 33° /14° | 0 mm | 8 | |
| Sept. 5 | Thundery outbreaks possible | 32° /17° | 0 mm | 8 | |
| Sept. 6 | Light rain shower | 27° /16° | 6.6 mm | 6 | |
| Sept. 7 | Fog | 21° /10° | 1 mm | 5 | |
| Sept. 8 | Mist | 21° /8° | 0 mm | 6 | |
| Sept. 9 | Mist | 27° /11° | 0 mm | 7 | |
| Sept. 10 | Mist | 29° /12° | 0 mm | 7 | |
| Sept. 11 | Mist | 30° /13° | 0.2 mm | 7 | |
| Sept. 12 | Fog | 27° /13° | 3.6 mm | 7 | |
| Sept. 13 | Mist | 26° /11° | 0 mm | 6 | |
| Sept. 14 | Mist | 28° /10° | 0 mm | 7 | |
| Sept. 15 | Mist | 29° /11° | 0 mm | 7 | |
| Sept. 16 | Mist | 28° /11° | 0 mm | 7 | |
| Sept. 17 | Moderate or heavy rain shower | 24° /10° | 4.2 mm | 6 | |
| Sept. 18 | Mist | 25° /14° | 0 mm | 6 | |
| Sept. 19 | Light rain | 24° /8° | 0.6 mm | 6 | |
| Sept. 20 | Light rain | 28° /14° | 0.6 mm | 6 | |
| Sept. 21 | Overcast | 29° /15° | 0 mm | 7 | |
| Sept. 22 | Thundery outbreaks possible | 26° /17° | 5.6 mm | 6 | |
| Sept. 23 | Mist | 24° /13° | 2.2 mm | 6 | |
| Sept. 24 | Mist | 24° /11° | 4.2 mm | 6 | |
| Sept. 25 | Fog | 22° /15° | 1.7 mm | 5 | |
| Sept. 26 | Light drizzle | 25° /12° | 0.9 mm | 6 | |
| Sept. 27 | Heavy rain | 22° /14° | 13.9 mm | 5 | |
| Sept. 28 | Fog | 22° /15° | 4.4 mm | 5 | |
| Sept. 29 | Patchy rain possible | 22° /16° | 18.3 mm | 5 | |
| Sept. 30 | Mist | 24° /15° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Allen 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 Allen County forecast closer to your planned date for the most up-to-date weather information.
Allen County in September - FAQ
What are the expected maximum and minimum temperatures in Allen County during September?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Allen County during September?
Moderate rainfall is anticipated in Allen County during September, with a total of 64.2 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Allen County during September?
The average wind speed in Allen County during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
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Where is Allen County?Get accurate weather forecasts for Allen County, located at latitude 41.131 and longitude -85.129. Stay updated with localized weather information tailored for Allen County.
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