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Canada weather

Weather in Ancaster for September 2026

Your guide to Ancaster weather in September - trends and predictions

    Temperatures

  • So far, September 2026 in Ancaster is slightly warmer than the historical average by 1.2 °C.

  • The forecast for the next days in Ancaster predicts a temperature of 19.9 °C, which is cooler than the historical average.

  • In general, the average temperature in Ancaster at the beginning of September is 25.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21 °C by the end of September.

    • Rain 🌧️

  • Ancaster experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 79.6 mm.

    • More

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Average dry days
21
Dry days
Average rainy days
9
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/13°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Ancaster Weather September

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

Temperatures trend during September in Ancaster

See the weather trend as well as the moving average line

September weather in Ancaster day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 27° /14° 0.3 mm 7
2 Sept. Mist
Mist
 25° /13° 2.9 mm 4
3 Sept. Overcast
Overcast
 28° /13° 0.5 mm 6
4 Sept. Sunny
Sunny
 27° /14° 5.2 mm 7
5 Sept. Sunny
Sunny
 27° /14° 0 mm 7
6 Sept. Patchy rain possible
Patchy rain possible
 26° /15° 5.8 mm 6
7 Sept. Light rain shower
Light rain shower
 21° /12° 0.9 mm 5
8 Sept. Partly cloudy
Partly cloudy
 22° /10° 0 mm 5
9 Sept. Overcast
Overcast
 24° /12° 1.9 mm 4
10 Sept. Overcast
Overcast
 23° /13° 0 mm 5
11 Sept. Partly cloudy
Partly cloudy
 25° /13° 0.1 mm 6
12 Sept. Light rain shower
Light rain shower
 26° /13° 1.9 mm 6
13 Sept. Overcast
Overcast
 25° /13° 0.1 mm 5.7
14 Sept. Sunny
Sunny
 19° /10° 0 mm 5.7
15 Sept. Overcast
Overcast
 22° /13° 0 mm 4
16 Sept. Patchy rain possible
Patchy rain possible
 25° /17° 1.4 mm 3.6
17 Sept. Overcast
Overcast
 21° /14° 5 mm 5
18 Sept. Overcast
Overcast
 20° /13° 0 mm 6
19 Sept. Overcast
Overcast
 21° /14° 0 mm 6
20 Sept. Overcast
Overcast
 19° /14° 2.7 mm 4
21 Sept. Overcast
Overcast
 15° /11° 0 mm 3
22 Sept. Overcast
Overcast
 14° /12° 3 mm 3
23 Sept. Overcast
Overcast
 16° /14° 0 mm 4
24 Sept. Overcast
Overcast
 19° /14° 0 mm 5
25 Sept. Sunny
Sunny
 21° /15° 0 mm 6
26 Sept. Sunny
Sunny
 22° /15° 0 mm 6
27 Sept. Overcast
Overcast
 21° /12° 0 mm 4
28 Sept. Patchy light drizzle
Patchy light drizzle
 21° /13° 0.3 mm 5
29 Sept. Patchy rain possible
Patchy rain possible
 22° /13° 0 mm 5
30 Sept. Fog
Fog
 21° /13° 0 mm 5
Next
Important Notice
Our weather forecast for Ancaster 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 Ancaster forecast closer to your planned date for the most up-to-date weather information.
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Ancaster in September - FAQ

What are the expected maximum and minimum temperatures in Ancaster during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Ancaster during September?
Moderate rainfall is anticipated in Ancaster during September, with a total of 79.6 mm spread over approximately 9 days. Considering plans for rainy days is advisable.

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

September rainfall patterns in Ancaster

Explore the daily rainfall trends and prepare for Ancasters September weather 💧
Typically, Ancaster has 9 rainy days in September with a total of 79.6 mm of rainfall.

UV exposure in Ancaster during September

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

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Location coordinates Where is Ancaster?

Get accurate weather forecasts for Ancaster, located at latitude 43.218 and longitude -79.987. Stay updated with localized weather information tailored for Ancaster.

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