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Banff, Alberta climate

Dfc Subarctic

Banff has a seasonal cold-temperate climate (Subarctic, Köppen Dfc). The hottest month is July with an average daily high near 23°C, while the coldest is December averaging around −14°C at night. Around 442 mm of precipitation falls each year, peaking in June (71 mm) and easing off in February (20 mm). At latitude 51°N, day length swings from 7.7 hours in midwinter to 16.3 hours at midsummer.

☀️ Summers

Mild

Highs near 23°C in July.

❄️ Winters

Very cold

Lows near −14°C in December.

🌧️ Rain

Fairly dry

About 442 mm of rain a year.

Wettest in June

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Banff climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	−4	−1	3	9	14	18	23	22	17	9	1	−5
Avg temp (°C)	−9	−7	−3	3	7	11	15	14	9	3	−4	−9
Avg low (°C)	−13	−13	−8	−4	0	4	7	6	2	−2	−8	−14
Precipitation (mm)	20	20	29	39	50	71	38	42	47	32	29	25

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	−4	−1	3	9	14	18
Avg temp (°C)	−9	−7	−3	3	7	11
Avg low (°C)	−13	−13	−8	−4	0	4
Precipitation (mm)	20	20	29	39	50	71

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	23	22	17	9	1	−5
Avg temp (°C)	15	14	9	3	−4	−9
Avg low (°C)	7	6	2	−2	−8	−14
Precipitation (mm)	38	42	47	32	29	25

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	68	67	68	71	71	70	58	58	61	67	68	65
Relative humidity (%)	96	96	95	89	76	75	72	71	74	83	94	96
Wind speed (m/s)	0.6	0.6	0.5	0.5	0.4	0.2	0.2	0.3	0.3	0.2	0.4	0.5

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	68	67	68	71	71	70
Relative humidity (%)	96	96	95	89	76	75
Wind speed (m/s)	0.6	0.6	0.5	0.5	0.4	0.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	58	58	61	67	68	65
Relative humidity (%)	72	71	74	83	94	96
Wind speed (m/s)	0.2	0.3	0.3	0.2	0.4	0.5

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Banff CS, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →