Weather in Alliston for August 2026
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Until now, August 2026 in Alliston has been nearly identical to the historical average, with a temperature of 26.3 °C (showing only a slight deviation of 0.1 °C).
Expect cooler weather in the next days in Alliston with the forecast suggesting a temperature of 22.5 °C, lower than the historical average.
In general, the average temperature in Alliston at the beginning of August is 26.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22 °C by the end of August.
Alliston experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 104 mm.
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Alliston Weather August
Temperatures trend during August in Alliston
August weather in Alliston day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Cloudy | 27° /16° | 3.6 mm | 7 | |
| 2 Aug. |  Partly cloudy | 26° /14° | 6.9 mm | 6 | |
| 3 Aug. |  Sunny | 27° /16° | 2.7 mm | 8 | |
| 4 Aug. | Sunny | 27° /14° | 1.2 mm | 7 | |
| 5 Aug. | Partly cloudy | 27° /15° | 1 mm | 7 | |
| 6 Aug. |  Overcast | 25° /15° | 2.3 mm | 7 | |
| 7 Aug. |  Moderate or heavy rain shower | 25° /15° | 7.7 mm | 7 | |
| 8 Aug. | Moderate or heavy rain shower | 26° /15° | 2.6 mm | 7 | |
| 9 Aug. | Sunny | 27° /14° | 0.7 mm | 7 | |
| 10 Aug. | Moderate or heavy rain shower | 25° /16° | 5.6 mm | 7 | |
| 11 Aug. | Cloudy | 25° /14° | 2 mm | 7 | |
| 12 Aug. | Sunny | 26° /14° | 6.2 mm | 5.4 | |
| 13 Aug. | Sunny | 24° /15° | 0 mm | 5.8 | |
| 14 Aug. | Sunny | 24° /14° | 0.1 mm | 6.3 | |
| 15 Aug. | Sunny | 25° /13° | 0 mm | 7 | |
| 16 Aug. |  Patchy rain possible | 24° /17° | 2.8 mm | 5 | |
| 17 Aug. | Sunny | 23° /14° | 0.1 mm | 6 | |
| 18 Aug. | Partly cloudy | 27° /13° | 2.4 mm | 7 | |
| 19 Aug. | Sunny | 24° /17° | 0.3 mm | 6 | |
| 20 Aug. | Patchy rain possible | 21° /14° | 28.6 mm | 6 | |
| 21 Aug. | Sunny | 17° /9° | 0.1 mm | 5 | |
| 22 Aug. | Sunny | 19° /11° | 0 mm | 5 | |
| 23 Aug. | Sunny | 19° /12° | 0 mm | 5 | |
| 24 Aug. | Sunny | 22° /12° | 0 mm | 6 | |
| 25 Aug. | Sunny | 20° /11° | 0 mm | 6 | |
| 26 Aug. |  Fog | 22° /12° | 0 mm | 5 | |
| 27 Aug. | Cloudy | 25° /12° | 0 mm | 6 | |
| 28 Aug. | Cloudy | 20° /12° | 15.9 mm | 5 | |
| 29 Aug. | Partly cloudy | 22° /10° | 0.8 mm | 6 | |
| 30 Aug. |  Light rain | 22° /11° | 4.3 mm | 6 | |
| 31 Aug. | Sunny | 23° /11° | 3.9 mm | 6 | |
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Alliston in August - FAQ
What are the expected maximum and minimum temperatures in Alliston during August?
How much rainfall should be expected in Alliston during August?
What are the typical wind conditions in Alliston during August?
August rainfall patterns in Alliston
UV exposure in Alliston during August
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