easeweather.com
Units
°C
°F
Ancaster
Forecast Today Tomorrow
more
Ontario CanadaUnited States

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

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

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 in September average weather

Move between months or click on a day
Select a date

You can click on date

Access Ancaster weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Got it

Temperatures trend during September in Ancaster

See the weather trend as well as the moving average line

September weather day by day

Click on a date for more information
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.

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 ☀️

Quick links

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.

Found a mistake?
We appreciate your attention to details. Tell us here.