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Canada weather

Weather in Ancaster for September 2025

Your guide to Ancaster weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Ancaster at the beginning of September is 26.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.9 °C by the end of September.

    • Rain 🌧️

  • Ancaster experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 73.3 mm.

    • More

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Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/13°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Ancaster Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Partly cloudy
25°
2
Mist
23°
3
Overcast
28°
4
Partly cloudy
30°
5
Mist
30°
6
Patchy rain possible
29°
7
Light rain shower
21°
8
Fog
22°
9
Overcast
24°
10
Overcast
23°
11
Patchy rain possible
25°
12
Light rain shower
26°
13
Cloudy
23°
14
Mist
23°
15
Cloudy
25°
16
Mist
26°
17
Light rain shower
22°
18
Fog
23°
19
Mist
22°
20
Partly cloudy
23°
21
Mist
25°
22
Mist
23°
23
Overcast
22°
24
Cloudy
21°
25
Cloudy
23°
26
Fog
22°
27
Overcast
19°
28
Patchy light drizzle
20°
29
Patchy rain possible
20°
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. Partly cloudy
Partly cloudy
 25° /12° 0.3 mm 6
2 Sept. Mist
Mist
 23° /10° 0.2 mm 6
3 Sept. Overcast
Overcast
 28° /13° 0.1 mm 7
4 Sept. Partly cloudy
Partly cloudy
 30° /15° 0 mm 8
5 Sept. Mist
Mist
 30° /16° 0 mm 8
6 Sept. Patchy rain possible
Patchy rain possible
 29° /17° 11.6 mm 7
7 Sept. Light rain shower
Light rain shower
 21° /13° 1.8 mm 5
8 Sept. Fog
Fog
 22° /11° 0 mm 5
9 Sept. Overcast
Overcast
 24° /12° 0 mm 5
10 Sept. Overcast
Overcast
 23° /13° 0 mm 5
11 Sept. Patchy rain possible
Patchy rain possible
 25° /14° 0.1 mm 6
12 Sept. Light rain shower
Light rain shower
 26° /14° 3.7 mm 6
13 Sept. Cloudy
Cloudy
 23° /12° 0 mm 6
14 Sept. Mist
Mist
 23° /10° 0 mm 6
15 Sept. Cloudy
Cloudy
 25° /12° 0 mm 6
16 Sept. Mist
Mist
 26° /11° 0 mm 6
17 Sept. Light rain shower
Light rain shower
 22° /13° 0.8 mm 5
18 Sept. Fog
Fog
 23° /13° 0 mm 5
19 Sept. Mist
Mist
 22° /11° 0 mm 5
20 Sept. Partly cloudy
Partly cloudy
 23° /10° 0 mm 6
21 Sept. Mist
Mist
 25° /13° 4.4 mm 6
22 Sept. Mist
Mist
 23° /13° 0 mm 5
23 Sept. Overcast
Overcast
 22° /13° 9.5 mm 5
24 Sept. Cloudy
Cloudy
 21° /14° 0.8 mm 5
25 Sept. Cloudy
Cloudy
 23° /14° 38.5 mm 5
26 Sept. Fog
Fog
 22° /13° 0.9 mm 5
27 Sept. Overcast
Overcast
 19° /11° 0 mm 4
28 Sept. Patchy light drizzle
Patchy light drizzle
 20° /12° 0.4 mm 5
29 Sept. Patchy rain possible
Patchy rain possible
 20° /14° 0 mm 5
30 Sept. Fog
Fog
 21° /14° 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 73.3 mm spread over approximately 7 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 💧

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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