Best year time to visit Alliston

General weather information about Alliston

Average annual temperature is 8.7 °C

Absolute maximum temperature: 32.5 °C

Absolute minimum temperature: -28.8 °C

Number of sunny days: 146 days

Number of rainy days: 178 days

Number of snow days: 41 days

Look at detailed online map of Alliston

* Weather data for Alliston Canada is based on climate observations for 2026 year

Alliston air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	6.4	12.6	10.1	28.3	30.4	31.2	30.1	28.7	32.5	29.7	14.6	12.9
Average daytime temperature (°C)	0.9	2.6	4.2	14.9	19.3	23.7	26.3	24.1	22.7	15.6	6.9	4.4
Average temperature (°C)	-2.0	-3.4	-0.8	7.9	12.4	18.1	20.6	18.7	16.8	11.5	2.8	1.4
Average night temperature (°C)	-4.8	-8.6	-4.9	2.7	6.2	12.8	15.5	14.3	12.1	8.1	-0.7	-1.2
Absolute minimum temperature (°C)	-16.3	-28.8	-13.9	-6.4	-1.2	9.0	11.3	8.2	4.3	-3.4	-6.5	-8.2

Alliston monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	9.0	11.0	12.0	14.0	15.0	15.0	15.0	14.0	13.0	11.0	10.0	9.0
Daylight mean duration (h)	9.3	10.5	11.9	13.5	14.8	15.4	15.1	14.0	12.5	11.0	9.6	8.9
Daylight minimum duration (h)	8.0	9.0	11.0	12.0	14.0	15.0	14.0	13.0	11.0	10.0	9.0	8.0
Sunshine mean duration (h)	2.7	5.9	6.2	8.4	11.2	11.5	11.6	10.1	9.7	5.5	5.0	2.4
Precipitation (mm)	79	75	79	92	54	130	120	104	27	56	38	75
Sunny days	7	10	11	13	23	15	6	10	19	11	12	9
Rainy days	12	8	10	17	8	15	25	21	11	20	15	16
Snow days	12	10	10	0	0	0	0	0	0	0	3	6

Alliston - weather forecast by months

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Best time to visit Alliston:

The best time to visit Alliston during the most sunny months:

May — 11.2(h)
June — 11.5(h)
July — 11.6(h)
August — 10.1(h)
September — 9.7(h)

Months with the longest average daylight duration in Alliston:

June — 15.4(h)

The largest precipitation sum in Alliston is at

June — 130(mm)

July — 120(mm)

August — 104(mm)

Weather forecast in the closest to Alliston admin centers