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Monthly climate in Sault Ste. Marie, Ontario, Canada

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Sault Ste. Marie features a humid continental climate (Dfb). Temperatures typically range between -9 °C (17 °F) and 19 °C (67 °F) through the year, but rarely can drop to -34 °C (-28 °F) or can rise to as high as 30 °C (87 °F). The average annual precipitation amounts to about 1017 mm (40.0 inches) and receives 141 rainy days on the 1 mm (0.04 inches) threshold annually. Sault Ste. Marie enjoys an average of 2689 hours of sunshine throughout the year, and daylight varies from 8 hours 37 minutes to 15 hours 44 minutes per day.

Monthly average temperatures in Sault Ste. Marie, Ontario, Canada §

The warmest months in Sault Ste. Marie are June, July and August, with daily mean temperatures ranging from 16 to 19 °C (61 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -9 to -5 °C (17 - 23 °F) throughout the day. On average each year, Sault Ste. Marie experiences 20 days above 25 °C (77.0 °F) and 152 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sault Ste. Marie, Ontario, Canada. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 5°C
(41°F)		 7°C
(45°F)		 12°C
(53°F)		 17°C
(64°F)		 26°C
(79°F)		 29°C
(85°F)		 30°C
(87°F)		 28°C
(83°F)		 29°C
(85°F)		 23°C
(73°F)		 20°C
(69°F)		 12°C
(53°F)
Mean maximum 2°C
(37°F)		 5°C
(41°F)		 9°C
(48°F)		 16°C
(61°F)		 24°C
(75°F)		 28°C
(82°F)		 29°C
(84°F)		 28°C
(82°F)		 25°C
(78°F)		 20°C
(68°F)		 12°C
(53°F)		 7°C
(45°F)
Average high -5°C
(23°F)		 -4°C
(24°F)		 1°C
(34°F)		 7°C
(44°F)		 15°C
(59°F)		 20°C
(69°F)		 24°C
(75°F)		 23°C
(73°F)		 19°C
(66°F)		 11°C
(53°F)		 3°C
(38°F)		 -2°C
(29°F)
Daily mean -9°C
(17°F)		 -8°C
(17°F)		 -4°C
(26°F)		 2°C
(37°F)		 10°C
(50°F)		 16°C
(61°F)		 19°C
(67°F)		 19°C
(66°F)		 14°C
(58°F)		 8°C
(47°F)		 0°C
(32°F)		 -5°C
(23°F)
Average low -12°C
(10°F)		 -12°C
(10°F)		 -8°C
(18°F)		 -2°C
(29°F)		 6°C
(42°F)		 11°C
(52°F)		 15°C
(59°F)		 15°C
(59°F)		 11°C
(51°F)		 5°C
(41°F)		 -3°C
(27°F)		 -8°C
(17°F)
Mean minimum -26°C
(-14°F)		 -24°C
(-10°F)		 -19°C
(-2°F)		 -9°C
(16°F)		 -1°C
(31°F)		 6°C
(43°F)		 10°C
(51°F)		 10°C
(50°F)		 4°C
(40°F)		 -2°C
(29°F)		 -15°C
(6°F)		 -21°C
(-5°F)
Minimum -34°C
(-28°F)		 -27°C
(-16°F)		 -22°C
(-8°F)		 -13°C
(10°F)		 -3°C
(27°F)		 3°C
(38°F)		 9°C
(49°F)		 6°C
(44°F)		 2°C
(36°F)		 -8°C
(19°F)		 -20°C
(-3°F)		 -29°C
(-20°F)

Compare climate in Sault Ste. Marie with other places

Compare temperature, precipitation, sunshine, UV index in Sault Ste. Marie, Ontario, Canada with other places around the world.

Monthly average precipitation in Sault Ste. Marie, Ontario, Canada §

Sault Ste. Marie usually has the most precipitation in June, September and October, with an average of 13 rainy days and 120 mm (4.7 inches) of precipitation per month. The driest months in Sault Ste. Marie are January, February and March. On average, 54 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sault Ste. Marie, Ontario, Canada. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 46 (1.8) 63 (2.5) 54 (2.1) 88 (3.5) 75 (2.9) 113 (4.4) 74 (2.9) 112 (4.4) 114 (4.5) 134 (5.3) 78 (3.1) 67 (2.7)
Average precipitation days (≥ 1 mm) 10 12 10 14 9 10 7 11 13 16 15 14

Monthly sunshine hours in Sault Ste. Marie, Ontario, Canada §

The sunniest months in Sault Ste. Marie are June, July and August, when the sun shines an average of 10 hours 47 minutes a day. Least sunny months in Sault Ste. Marie: January, November and December receive an average of 3 hours 34 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sault Ste. Marie, Ontario, Canada. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 101 148 232 239 305 326 346 320 257 185 122 104
Mean daily daylight hours 9h 2m 10h 19m 11h 57m 13h 36m 15h 1m 15h 44m 15h 21m 14h 5m 12h 29m 10h 50m 9h 22m 8h 37m

Solar UV radiation in Sault Ste. Marie, Ontario, Canada §

Sault Ste. Marie experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 9, which corresponds to the Very High category of sun exposure. January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Sault Ste. Marie UV Index data.

Average daily maximum UV levels by month for Sault Ste. Marie, Ontario, Canada. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 4 5 7 8 9 9 8 7 5 3 2

Detailed Monthly Weather Insights for Sault Ste. Marie, Ontario, Canada

Discover in-depth weather details for every month in Sault Ste. Marie. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Sault Ste. Marie's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.