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Weather in East Gwillimbury for September 2026

Your guide to East Gwillimbury weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in East Gwillimbury is slightly cooler than the historical average by 1.4 °C.

  • The forecast for the next days in East Gwillimbury predicts a temperature of 16.9 °C, which is cooler than the historical average.

  • In general, the average temperature in East Gwillimbury at the beginning of September is 24.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.3 °C by the end of September.

    • Rain 🌧️

  • East Gwillimbury experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 73.7 mm.

    • More

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

Average dry days
21
Dry days
Average rainy days
9
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/12°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
73 %
Avg humidity

East Gwillimbury Weather September

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

Temperatures trend during September in East Gwillimbury

See the weather trend as well as the moving average line

September weather in East Gwillimbury day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
 26° /12° 0.3 mm 6
2 Sept. Mist
Mist
 24° /13° 17.1 mm 5
3 Sept. Partly cloudy
Partly cloudy
 26° /13° 0.4 mm 6
4 Sept. Sunny
Sunny
 26° /14° 10.9 mm 7
5 Sept. Sunny
Sunny
 26° /13° 0.2 mm 7
6 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 25° /14° 3.5 mm 6
7 Sept. Light rain shower
Light rain shower
 20° /11° 3 mm 5
8 Sept. Overcast
Overcast
 21° /8° 0.1 mm 4
9 Sept. Mist
Mist
 23° /10° 4.3 mm 4
10 Sept. Mist
Mist
 23° /11° 0 mm 6
11 Sept. Patchy rain possible
Patchy rain possible
 24° /11° 0.2 mm 6
12 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 25° /12° 4.3 mm 6
13 Sept. Cloudy
Cloudy
 23° /12° 0.2 mm 5
14 Sept. Overcast
Overcast
 22° /11° 0 mm 6
15 Sept. Mist
Mist
 23° /11° 0 mm 5
16 Sept. Cloudy
Cloudy
 24° /11° 0 mm 5
17 Sept. Overcast
Overcast
 23° /12° 0.5 mm 4
18 Sept. Mist
Mist
 22° /10° 0 mm 5
19 Sept. Overcast
Overcast
 20° /8° 0 mm 5
20 Sept. Cloudy
Cloudy
 22° /7° 0 mm 5
21 Sept. Mist
Mist
 21° /10° 0 mm 4
22 Sept. Mist
Mist
 23° /11° 14.2 mm 5
23 Sept. Mist
Mist
 21° /12° 5.9 mm 5
24 Sept. Cloudy
Cloudy
 20° /12° 4.3 mm 5
25 Sept. Overcast
Overcast
 22° /12° 6.6 mm 5
26 Sept. Cloudy
Cloudy
 20° /12° 0 mm 5
27 Sept. Overcast
Overcast
 20° /10° 0 mm 4.6
28 Sept. Overcast
Overcast
 20° /11° 1 mm 2.3
29 Sept. Overcast
Overcast
 20° /14° 0 mm 2.7
30 Sept. Mist
Mist
 20° /14° 17.1 mm 3.2
Next
Important Notice
Our weather forecast for East Gwillimbury 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 East Gwillimbury forecast closer to your planned date for the most up-to-date weather information.
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East Gwillimbury in September - FAQ

What are the expected maximum and minimum temperatures in East Gwillimbury during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in East Gwillimbury during September?
Moderate rainfall is anticipated in East Gwillimbury during September, with a total of 73.7 mm spread over approximately 9 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in East Gwillimbury during September?
The average wind speed in East Gwillimbury during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in East Gwillimbury

Explore the daily rainfall trends and prepare for East Gwillimburys September weather 💧
Typically, East Gwillimbury has 9 rainy days in September with a total of 73.7 mm of rainfall.

UV exposure in East Gwillimbury during September

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

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Location coordinates Where is East Gwillimbury?

Get accurate weather forecasts for East Gwillimbury, located at latitude 44.101 and longitude -79.438. Stay updated with localized weather information tailored for East Gwillimbury.

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