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Canada weather

Weather in Alliston for May 2027

Your guide to Alliston weather in May - trends and predictions

    Temperatures

  • In general, the average temperature in Alliston at the beginning of May is 13.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 19 °C by the end of May.

    • Rain 🌧️

  • Alliston experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 116.9 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
7
Dry days
Average rainy days
24
Rainy days
Average snowy days
0
Snow days
Average temperatures
16°/6°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Alliston Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain
12°
2
Overcast
9°
3
Patchy rain possible
13°
4
Fog
18°
5
Light drizzle
15°
6
Sunny
15°
7
Overcast
13°
8
Patchy rain possible
14°
9
Light rain shower
15°
10
Patchy rain possible
12°
11
Light rain shower
12°
12
Light rain shower
17°
13
Light rain shower
17°
14
Patchy light drizzle
15°
15
Patchy rain possible
19°
16
Patchy rain possible
21°
17
Light rain shower
19°
18
Patchy rain possible
20°
19
Light rain shower
21°
20
Partly cloudy
15°
21
Sunny
14°
22
Partly cloudy
17°
23
Partly cloudy
15°
24
Moderate rain at times
14°
25
Overcast
17°
26
Mist
21°
27
Sunny
21°
28
Cloudy
17°
29
Sunny
17°
30
Sunny
20°
31
Partly cloudy
20°

Temperatures trend during May in Alliston

See the weather trend as well as the moving average line

May weather in Alliston day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Light rain
Light rain
 12° /2° 13.2 mm 4
2 May Overcast
Overcast
 9° /3° 0.1 mm 4
3 May Patchy rain possible
Patchy rain possible
 13° /2° 1.5 mm 4
4 May Fog
Fog
 18° /6° 0.8 mm 5
5 May Light drizzle
Light drizzle
 15° /7° 1 mm 4
6 May Sunny
Sunny
 15° /6° 5.2 mm 5
7 May Overcast
Overcast
 13° /3° 7.1 mm 5
8 May Patchy rain possible
Patchy rain possible
 14° /3° 1.4 mm 5
9 May Light rain shower
Light rain shower
 15° /3° 1.7 mm 5
10 May Patchy rain possible
Patchy rain possible
 12° /3° 0.2 mm 4
11 May Light rain shower
Light rain shower
 12° /2° 1.8 mm 5
12 May Light rain shower
Light rain shower
 17° /3° 1.1 mm 6
13 May Light rain shower
Light rain shower
 17° /8° 4.8 mm 3
14 May Patchy light drizzle
Patchy light drizzle
 15° /8° 1.3 mm 3
15 May Patchy rain possible
Patchy rain possible
 19° /7° 0 mm 6
16 May Patchy rain possible
Patchy rain possible
 21° /9° 4.6 mm 6
17 May Light rain shower
Light rain shower
 19° /10° 9.4 mm 6
18 May Patchy rain possible
Patchy rain possible
 20° /10° 0.5 mm 5
19 May Light rain shower
Light rain shower
 21° /10° 3.1 mm 5
20 May Partly cloudy
Partly cloudy
 15° /4° 7.9 mm 6
21 May Sunny
Sunny
 14° /6° 7.5 mm 4
22 May Partly cloudy
Partly cloudy
 17° /7° 10.2 mm 6
23 May Partly cloudy
Partly cloudy
 15° /7° 16.9 mm 5
24 May Moderate rain at times
Moderate rain at times
 14° /6° 1.2 mm 4
25 May Overcast
Overcast
 17° /6° 1 mm 5
26 May Mist
Mist
 21° /7° 0 mm 6
27 May Sunny
Sunny
 21° /8° 1.1 mm 6
28 May Cloudy
Cloudy
 17° /8° 1.5 mm 6
29 May Sunny
Sunny
 17° /8° 5.4 mm 6
30 May Sunny
Sunny
 20° /7° 0 mm 7
31 May Partly cloudy
Partly cloudy
 20° /8° 2.1 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.
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Alliston in May - FAQ

What are the expected maximum and minimum temperatures in Alliston during May?

Enjoy moderate daytime temperatures of up to 16° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Alliston during May?

Significant rainfall exceeding 116.9 mm is expected in Alliston during May, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Alliston during May?

The average wind speed in Alliston during May is 20 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 💧
Typically, Alliston has 24 rainy days in May with a total of 116.9 mm of rainfall.

UV exposure in Alliston during May

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

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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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