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Weather in Windsor for September 2025

Your guide to Windsor weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Windsor is cooler than usual, with temperatures averaging 23.3 °C, this is -2.4 °C below the typical seasonal average.

  • The forecast for the next days in Windsor predicts temperatures to be around 26 °C, close to the historical average.

  • In general, the average temperature in Windsor at the beginning of September is 26 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.7 °C by the end of September.

    • Rain 🌧️

  • Windsor experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 37.9 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
20
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/16°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
66 %
Avg humidity

Windsor Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Mist
25°
2
Mist
26°
3
Overcast
29°
4
Partly cloudy
28°
5
Thundery outbreaks possible
28°
6
Light rain shower
24°
7
Cloudy
22°
8
Sunny
22°
9
Partly cloudy
25°
10
Overcast
26°
11
Mist
28°
12
Moderate or heavy rain shower
26°
13
Cloudy
25°
14
Sunny
30°
15
Mist
29°
16
Sunny
28°
17
Mist
30°
18
Sunny
33°
19
Sunny
25°
20
Sunny
25°
21
Sunny
28°
22
Patchy rain possible
23°
23
Patchy rain possible
26°
24
Moderate rain
26°
25
Patchy rain possible
20°
26
Sunny
18°
27
Sunny
18°
28
Moderate or heavy rain with thunder
19°
29
Fog
22°
30
Mist
22°

Temperatures trend during September in Windsor

See the weather trend as well as the moving average line

September weather in Windsor day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
 25° /15° 0.3 mm 5
2 Sept. Mist
Mist
 26° /14° 0 mm 6
3 Sept. Overcast
Overcast
 29° /17° 0 mm 7
4 Sept. Partly cloudy
Partly cloudy
 28° /16° 17.4 mm 7
5 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 28° /17° 0 mm 6
6 Sept. Light rain shower
Light rain shower
 24° /15° 3.2 mm 5
7 Sept. Cloudy
Cloudy
 22° /14° 1.4 mm 5
8 Sept. Sunny
Sunny
 22° /12° 0 mm 6
9 Sept. Partly cloudy
Partly cloudy
 25° /13° 0 mm 6
10 Sept. Overcast
Overcast
 26° /15° 0 mm 6
11 Sept. Mist
Mist
 28° /16° 0.5 mm 6
12 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 26° /16° 2.4 mm 7
13 Sept. Cloudy
Cloudy
 25° /15° 0 mm 6
14 Sept. Sunny
Sunny
 30° /15° 0 mm 1.5
15 Sept. Mist
Mist
 29° /16° 0 mm 1.4
16 Sept. Sunny
Sunny
 28° /16° 0 mm 1.4
17 Sept. Mist
Mist
 30° /16° 0 mm 1.4
18 Sept. Sunny
Sunny
 33° /19° 0 mm 0
19 Sept. Sunny
Sunny
 25° /15° 0 mm 5
20 Sept. Sunny
Sunny
 25° /14° 0 mm 5
21 Sept. Sunny
Sunny
 28° /15° 0 mm 6
22 Sept. Patchy rain possible
Patchy rain possible
 23° /19° 2.7 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 26° /18° 1.9 mm 5
24 Sept. Moderate rain
Moderate rain
 26° /18° 5.1 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
 20° /14° 0.3 mm 4
26 Sept. Sunny
Sunny
 18° /11° 0 mm 4
27 Sept. Sunny
Sunny
 18° /9° 0 mm 4
28 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 19° /16° 8.6 mm 4
29 Sept. Fog
Fog
 22° /16° 0.2 mm 5
30 Sept. Mist
Mist
 22° /16° 0 mm 5
Next
Important Notice
Our weather forecast for Windsor 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 Windsor forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Windsor in September - FAQ

What are the expected maximum and minimum temperatures in Windsor during September?
During September, expect a variety of temperatures with highs around 25° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Windsor during September?
In September, Windsor can expect light to moderate rainfall, totaling 37.9 mm across approximately 10 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Windsor during September?
The average wind speed in Windsor during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Windsor

Explore the daily rainfall trends and prepare for Windsors September weather 💧

UV exposure in Windsor during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

Quick links

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Location coordinates Where is Windsor?

Get accurate weather forecasts for Windsor, located at latitude 42.3 and longitude -83.017. Stay updated with localized weather information tailored for Windsor.

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