Alliston
May
Weather in Alliston for May 2026
Your guide to Alliston weather in May - trends and predictions
In general, the average temperature in Alliston at the beginning of May is 15.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 18.9 °C by the end of May.
Alliston in May brings notable rainfall, with an average of 16 rainy days and a total precipitation of 67.9 mm.
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Temperatures
Rain 🌧️
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15
Dry days
16
Rainy days
0
Snow days
18°/8°
Temperatures
18 km/h
Avg max wind
77 %
Avg humidity
Alliston Weather May
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Temperatures trend during May in Alliston
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May weather in Alliston day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Light rain | 15° /3° | 19.7 mm | 3 | |
| 2 May |  Overcast | 11° /5° | 0 mm | 3 | |
| 3 May |  Patchy rain possible | 15° /4° | 0.1 mm | 4 | |
| 4 May |  Fog | 18° /6° | 0.2 mm | 4 | |
| 5 May | Light drizzle | 16° /8° | 0.5 mm | 4 | |
| 6 May |  Sunny | 18° /8° | 6.8 mm | 5 | |
| 7 May | Overcast | 15° /4° | 10.6 mm | 4 | |
| 8 May | Patchy rain possible | 16° /5° | 1.9 mm | 4 | |
| 9 May | Light rain shower | 14° /3° | 0.4 mm | 4 | |
| 10 May | Patchy rain possible | 14° /4° | 0.3 mm | 3 | |
| 11 May | Light rain shower | 14° /3° | 2.6 mm | 4 | |
| 12 May | Light rain shower | 19° /4° | 1 mm | 5 | |
| 13 May | Light rain shower | 19° /10° | 3.7 mm | 5 | |
| 14 May | Patchy light drizzle | 17° /11° | 0.7 mm | 4 | |
| 15 May | Patchy rain possible | 20° /10° | 0 mm | 5 | |
| 16 May | Patchy rain possible | 22° /11° | 5.8 mm | 5 | |
| 17 May | Light rain shower | 18° /10° | 14.1 mm | 4 | |
| 18 May | Patchy rain possible | 16° /8° | 0 mm | 4 | |
| 19 May | Light rain shower | 18° /7° | 1.4 mm | 5 | |
| 20 May |  Moderate or heavy rain shower | 15° /4° | 11.9 mm | 4 | |
| 21 May | Sunny | 14° /6° | 7.5 mm | 4 | |
| 22 May |  Partly cloudy | 17° /8° | 13.5 mm | 4 | |
| 23 May | Partly cloudy | 16° /7° | 16.6 mm | 5 | |
| 24 May | Moderate rain at times | 14° /6° | 0.7 mm | 4 | |
| 25 May | Sunny | 15° /5° | 1.2 mm | 4 | |
| 26 May | Mist | 20° /5° | 0 mm | 5 | |
| 27 May | Sunny | 21° /7° | 1.5 mm | 5 | |
| 28 May |  Cloudy | 18° /9° | 2 mm | 4 | |
| 29 May | Sunny | 18° /8° | 7 mm | 5 | |
| 30 May | Partly cloudy | 21° /8° | 0 mm | 5 | |
| 31 May | Partly cloudy | 19° /8° | 2.8 mm | 5 | |
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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.
Change Month
Alliston in May - FAQ
What are the expected maximum and minimum temperatures in Alliston during May?
Enjoy moderate daytime temperatures of up to 18° 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 67.9 mm spread over approximately 16 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 18 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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