Best year time to visit St. Mary's

General weather information about St. Mary's

Average annual temperature is 7.0 °C

Absolute maximum temperature: 27.2 °C

Absolute minimum temperature: -16.4 °C

Number of sunny days: 107 days

Number of rainy days: 221 days

Number of snow days: 37 days

Look at detailed online map of St. Mary's

* Weather data for St. Mary's Canada is based on climate observations for 2026 year

St. Mary's air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	11.2	6.3	5.9	10.5	13.2	22.7	27.2	23.9	26.4	18.5	13.8	12.5
Average daytime temperature (°C)	3.9	-0.9	2.0	5.9	9.5	16.0	21.6	20.7	19.3	13.9	6.0	4.3
Average temperature (°C)	1.4	-4.0	-0.8	2.5	5.8	11.4	18.0	17.3	15.8	10.7	3.5	2.0
Average night temperature (°C)	-1.0	-7.2	-3.2	-0.1	2.7	8.2	15.3	14.5	13.0	8.2	1.0	-0.8
Absolute minimum temperature (°C)	-8.4	-16.4	-15.4	-4.7	-0.7	3.5	11.8	11.0	4.4	2.1	-4.7	-5.9

St. Mary's 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	8.0
Daylight mean duration (h)	9.0	10.3	11.9	13.6	15.1	15.8	15.4	14.2	12.6	10.9	9.4	8.6
Daylight minimum duration (h)	8.0	9.0	11.0	12.0	14.0	15.0	14.0	13.0	11.0	10.0	8.0	8.0
Sunshine mean duration (h)	2.3	4.8	5.5	6.1	8.6	6.1	6.3	8.1	7.4	5.0	3.4	2.6
Precipitation (mm)	255	196	87	52	146	96	106	179	115	165	126	83
Sunny days	4	8	7	10	13	11	12	8	9	8	11	6
Rainy days	18	16	11	17	18	19	19	23	21	23	18	18
Snow days	9	4	13	3	0	0	0	0	0	0	1	7

St. Mary's - weather forecast by months

St. Mary's weather in january St. Mary's weather in february St. Mary's weather in march St. Mary's weather in april St. Mary's weather in may St. Mary's weather in june St. Mary's weather in july St. Mary's weather in august St. Mary's weather in september St. Mary's weather in october St. Mary's weather in november St. Mary's weather in december

Best time to visit St. Mary's:

The best time to visit St. Mary's during the most sunny months:

May — 8.6(h)
August — 8.1(h)
September — 7.4(h)

Months with the longest average daylight duration in St. Mary's:

June — 15.8(h)
July — 15.4(h)

The largest precipitation sum in St. Mary's is at

January — 255(mm)

February — 196(mm)

August — 179(mm)

Weather forecast in the closest to St. Mary's admin centers