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Weather in Alliston for August 2025

Your guide to Alliston weather in August - trends and predictions
  • In general, the average temperature in Alliston at the beginning of August is 25.3 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 24 °C by the end of August.

  • Expect significant rainfall in Alliston during August, with an average of 17 rainy days.

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Average dry days
14
Dry days
Average rainy days
17
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/13°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Alliston in August average weather

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Temperatures trend during August in Alliston

See the weather trend as well as the moving average line

August weather day by day

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Date Weather Temperatures Rain UV More
1 Aug. Cloudy
Cloudy
26° /15° 0.3 mm 6
2 Aug. Patchy rain possible
Patchy rain possible
28° /16° 2.4 mm 7
3 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
27° /17° 4.4 mm 7
4 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
25° /16° 2.5 mm 6
5 Aug. Partly cloudy
Partly cloudy
23° /15° 2 mm 6
6 Aug. Overcast
Overcast
25° /14° 1.6 mm 6
7 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
23° /13° 15.1 mm 6
8 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
23° /14° 1.7 mm 5
9 Aug. Sunny
Sunny
25° /14° 1.4 mm 7
10 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
20° /14° 9 mm 5
11 Aug. Cloudy
Cloudy
20° /12° 3.9 mm 5
12 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
23° /13° 9.6 mm 6
13 Aug. Patchy rain possible
Patchy rain possible
23° /13° 0.6 mm 5
14 Aug. Patchy rain possible
Patchy rain possible
25° /14° 0.3 mm 6
15 Aug. Moderate rain at times
Moderate rain at times
25° /15° 2.1 mm 6
16 Aug. Partly cloudy
Partly cloudy
25° /15° 1.4 mm 7
17 Aug. Patchy rain possible
Patchy rain possible
25° /15° 13.6 mm 6
18 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
20° /14° 15.9 mm 5
19 Aug. Partly cloudy
Partly cloudy
21° /12° 0.3 mm 5
20 Aug. Patchy rain possible
Patchy rain possible
23° /12° 0.1 mm 5
21 Aug. Overcast
Overcast
21° /12° 0 mm 5
22 Aug. Overcast
Overcast
23° /11° 0 mm 6
23 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
24° /13° 4.6 mm 6
24 Aug. Patchy rain possible
Patchy rain possible
26° /15° 1.1 mm 6
25 Aug. Fog
Fog
25° /15° 0 mm 6
26 Aug. Fog
Fog
25° /13° 0 mm 6
27 Aug. Cloudy
Cloudy
27° /13° 0 mm 6
28 Aug. Cloudy
Cloudy
22° /12° 0.3 mm 5
29 Aug. Cloudy
Cloudy
24° /11° 1.2 mm 6
30 Aug. Light rain
Light rain
22° /12° 6.5 mm 6
31 Aug. Sunny
Sunny
23° /12° 5.8 mm 6
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Important Notice
Our weather forecast for Alliston in August 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 Alliston forecast closer to your planned date for the most up-to-date weather information.

Alliston in August - FAQ

What are the expected maximum and minimum temperatures in Alliston during August?
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 Alliston during August?
Significant rainfall exceeding 132.7 mm is expected in Alliston during August, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Alliston during August?
The average wind speed in Alliston during August is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

August rainfall patterns in Alliston

Explore the daily rainfall trends and prepare for Allistons August weather 💧

UV exposure in Alliston during August

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

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Location coordinates Where is Alliston?

Get accurate weather forecasts for Alliston, located at latitude 44.15 and longitude -79.866. Stay updated with localized weather information tailored for Alliston.

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