Alliston Weather in May

In Alliston, May brings pleasant daytime temperatures around 20°C (68°F), with nights cooling to 7°C (45°F). Expect quite a bit of rainfall this month.

Rainfall in Alliston in May

You can typically expect 11 days of rain this month, averaging around 87 mm (3.4 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Alliston in May

May is one of the better months to visit Alliston. Expect 20°C (68°F) during the day and 7°C (45°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Alliston in May

The month enjoys around 230 hours of sunshine, creating mostly sunny days with good weather conditions.

If you're inclined towards comfortable temperatures and drier conditions, May is a good time to visit Alliston.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Canada, check out our Alliston's climate page.

Alliston Temperature in May

Min Temperature 7°C (45°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 35%  

Precipitation 87 mm (3.4 in)  

Rainy days 11 days  

Humidity 53% *  

Sunshine 230 hours *  

Percentage Sunshine 50% *  

* Data from: Mississauga, Canada (65 KM, 40 Miles).

What to Wear in Alliston in May

Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Alliston in May

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Canada, check out our Alliston's climate page.

More climate data for Alliston

Temperature Rainfall Sunshine Humidity

See the full Alliston climate overview or explore weather in Canada.