Alliston
May
Weather in Alliston for May 2025
Your guide to Alliston weather in May - trends and predictions
In general, the average temperature in Alliston at the beginning of May is 16.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 19.7 °C by the end of May.
The climate of Alliston in May is notably wet, with an average of 15 rainy days.
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16
Dry days
15
Rainy days
0
Snow days
19°/8°
Temperatures
17 km/h
Avg max wind
76 %
Avg humidity
Alliston in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | 2  12° | 3  18° | 4  17° | |||
| 5 15° | 6  15° | 7 19° | 8 19° | 9 12° | 10 13° | 11 12° |
| 12 13° | 13 20° | 14 14° | 15 18° | 16 19° | 17 19° | 18 23° |
| 19 24° | 20  14° | 21 17° | 22  22° | 23 21° | 24 16° | 25 16° |
| 26 20° | 27 21° | 28  17° | 29 20° | 30 21° | 31 23° |
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Temperatures trend during May in Alliston
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Light rain | 20° /7° | 2.8 mm | 4 | |
| 2 May | Overcast | 12° /5° | 0 mm | 3 | |
| 3 May | Patchy rain possible | 18° /8° | 0.3 mm | 4 | |
| 4 May | Fog | 17° /12° | 0.4 mm | 4 | |
| 5 May | Light drizzle | 15° /8° | 0.9 mm | 4 | |
| 6 May | Sunny | 15° /5° | 0 mm | 5 | |
| 7 May | Overcast | 19° /6° | 3 mm | 4 | |
| 8 May | Patchy rain possible | 19° /7° | 3.9 mm | 4 | |
| 9 May | Light rain shower | 12° /7° | 0.9 mm | 3 | |
| 10 May | Patchy rain possible | 13° /6° | 0.5 mm | 3 | |
| 11 May | Light rain shower | 12° /7° | 5.2 mm | 3 | |
| 12 May | Light rain shower | 13° /6° | 2 mm | 3 | |
| 13 May | Light rain shower | 20° /10° | 7.4 mm | 5 | |
| 14 May | Patchy light drizzle | 14° /8° | 1.4 mm | 3 | |
| 15 May | Patchy rain possible | 18° /7° | 0.1 mm | 4 | |
| 16 May | Patchy rain possible | 19° /9° | 0.4 mm | 4 | |
| 17 May | Light rain shower | 19° /11° | 2.1 mm | 4 | |
| 18 May | Patchy rain possible | 23° /11° | 0 mm | 5 | |
| 19 May | Light rain shower | 24° /12° | 2.8 mm | 5 | |
| 20 May | Moderate or heavy rain shower | 14° /9° | 23.8 mm | 3 | |
| 21 May | Sunny | 17° /6° | 0.2 mm | 5 | |
| 22 May | Partly cloudy | 22° /10° | 1.5 mm | 6 | |
| 23 May | Partly cloudy | 21° /9° | 0.2 mm | 6 | |
| 24 May | Moderate rain at times | 16° /7° | 1 mm | 5 | |
| 25 May | Sunny | 16° /5° | 1.8 mm | 5 | |
| 26 May | Sunny | 20° /5° | 0 mm | 5 | |
| 27 May | Sunny | 21° /10° | 2.3 mm | 5 | |
| 28 May | Cloudy | 17° /9° | 3.1 mm | 4 | |
| 29 May | Sunny | 20° /7° | 0 mm | 6 | |
| 30 May | Partly cloudy | 21° /8° | 0 mm | 6 | |
| 31 May | Partly cloudy | 23° /10° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Alliston in May 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 May - FAQ
What are the expected maximum and minimum temperatures in Alliston during May?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Alliston during May?
Moderate rainfall is anticipated in Alliston during May, with a total of 63.6 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Alliston during May?
The average wind speed in Alliston during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Alliston
Explore the daily rainfall trends and prepare for Allistons May weather 💧
UV exposure in Alliston during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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