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Canada weather

Weather in Welland for September 2026

Your guide to Welland weather in September - trends and predictions

    Temperatures

  • So far, September 2026 in Welland shows a warmer trend than usual by 2.3 °C.

  • Expect cooler weather in the next days in Welland with the forecast suggesting a temperature of 21.4 °C, lower than the historical average.

  • In general, the average temperature in Welland at the beginning of September is 24.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21 °C by the end of September.

    • Rain 🌧️

  • Welland experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 33.4 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
23°/14°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Welland Weather September

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

Temperatures trend during September in Welland

See the weather trend as well as the moving average line

September weather in Welland day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 26° /14° 0.5 mm 6
2 Sept. Overcast
Overcast
 24° /15° 37.9 mm 4
3 Sept. Partly cloudy
Partly cloudy
 26° /15° 1 mm 5
4 Sept. Sunny
Sunny
 26° /16° 2.1 mm 6
5 Sept. Sunny
Sunny
 26° /15° 0 mm 7
6 Sept. Fog
Fog
 25° /15° 1 mm 6
7 Sept. Light rain shower
Light rain shower
 21° /12° 2.2 mm 5
8 Sept. Light rain shower
Light rain shower
 23° /11° 0.3 mm 5
9 Sept. Overcast
Overcast
 23° /14° 3 mm 4
10 Sept. Light rain shower
Light rain shower
 23° /14° 2.4 mm 5
11 Sept. Partly cloudy
Partly cloudy
 24° /13° 0 mm 6
12 Sept. Overcast
Overcast
 25° /13° 0 mm 5.9
13 Sept. Overcast
Overcast
 25° /16° 0.4 mm 5.6
14 Sept. Sunny
Sunny
 17° /11° 0.2 mm 5.7
15 Sept. Overcast
Overcast
 20° /12° 0 mm 5
16 Sept. Overcast
Overcast
 26° /19° 1 mm 7
17 Sept. Light rain shower
Light rain shower
 26° /18° 11.3 mm 6
18 Sept. Overcast
Overcast
 19° /15° 0 mm 5
19 Sept. Sunny
Sunny
 20° /13° 0 mm 5
20 Sept. Sunny
Sunny
 21° /13° 0 mm 6
21 Sept. Sunny
Sunny
 22° /12° 0 mm 6
22 Sept. Sunny
Sunny
 19° /12° 0 mm 5
23 Sept. Overcast
Overcast
 20° /11° 0 mm 5
24 Sept. Sunny
Sunny
 18° /9° 0 mm 5
25 Sept. Sunny
Sunny
 21° /10° 0 mm 6
26 Sept. Fog
Fog
 22° /14° 0 mm 5
27 Sept. Fog
Fog
 21° /13° 0 mm 5
28 Sept. Overcast
Overcast
 20° /14° 0.2 mm 5
29 Sept. Fog
Fog
 23° /13° 0 mm 5
30 Sept. Mist
Mist
 22° /13° 0 mm 5
Next
Important Notice
Our weather forecast for Welland 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 Welland forecast closer to your planned date for the most up-to-date weather information.
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Welland in September - FAQ

What are the expected maximum and minimum temperatures in Welland during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Welland during September?
In September, Welland can expect light to moderate rainfall, totaling 33.4 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.

What are the typical wind conditions in Welland during September?
The average wind speed in Welland during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Welland

Explore the daily rainfall trends and prepare for Wellands September weather 💧
Typically, Welland has 9 rainy days in September with a total of 33.4 mm of rainfall.

UV exposure in Welland during September

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

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Location coordinates Where is Welland?

Get accurate weather forecasts for Welland, located at latitude 42.983 and longitude -79.25. Stay updated with localized weather information tailored for Welland.

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