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Monthly climate in Sioux Lookout, Ontario, Canada

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Sioux Lookout features a humid continental climate (Dfb). Temperatures typically range between -15 °C (4 °F) and 20 °C (68 °F) through the year, but rarely can drop to -38 °C (-36 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 754 mm (29.7 inches) and receives 123 rainy days on the 1 mm (0.04 inches) threshold annually. Sioux Lookout enjoys an average of 2685 hours of sunshine throughout the year, and daylight varies from 8 hours 7 minutes to 16 hours 17 minutes per day.

Monthly average temperatures in Sioux Lookout, Ontario, Canada §

The warmest months in Sioux Lookout are June, July and August, with daily mean temperatures ranging from 17 to 20 °C (64 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -15 to -12 °C (4 - 10 °F) throughout the day. On average each year, Sioux Lookout experiences 31 days above 25 °C (77.0 °F) and 176 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sioux Lookout, 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 4°C
(39°F)		 9°C
(49°F)		 13°C
(55°F)		 19°C
(66°F)		 28°C
(84°F)		 33°C
(91°F)		 34°C
(94°F)		 32°C
(91°F)		 28°C
(82°F)		 24°C
(75°F)		 15°C
(59°F)		 6°C
(42°F)
Mean maximum -1°C
(31°F)		 2°C
(36°F)		 9°C
(49°F)		 15°C
(59°F)		 25°C
(78°F)		 29°C
(84°F)		 32°C
(89°F)		 30°C
(86°F)		 26°C
(79°F)		 19°C
(66°F)		 7°C
(46°F)		 2°C
(37°F)
Average high -11°C
(12°F)		 -11°C
(13°F)		 -1°C
(31°F)		 5°C
(42°F)		 15°C
(60°F)		 22°C
(72°F)		 25°C
(77°F)		 23°C
(73°F)		 16°C
(62°F)		 8°C
(46°F)		 -2°C
(28°F)		 -8°C
(17°F)
Daily mean -15°C
(5°F)		 -15°C
(4°F)		 -6°C
(22°F)		 0°C
(33°F)		 10°C
(50°F)		 17°C
(64°F)		 20°C
(68°F)		 18°C
(65°F)		 12°C
(54°F)		 5°C
(41°F)		 -6°C
(22°F)		 -12°C
(10°F)
Average low -19°C
(-2°F)		 -20°C
(-4°F)		 -11°C
(13°F)		 -4°C
(24°F)		 5°C
(41°F)		 12°C
(54°F)		 15°C
(60°F)		 14°C
(57°F)		 9°C
(48°F)		 2°C
(36°F)		 -9°C
(16°F)		 -16°C
(4°F)
Mean minimum -32°C
(-26°F)		 -32°C
(-26°F)		 -24°C
(-11°F)		 -14°C
(7°F)		 -4°C
(26°F)		 6°C
(43°F)		 11°C
(51°F)		 8°C
(47°F)		 2°C
(36°F)		 -6°C
(21°F)		 -20°C
(-4°F)		 -28°C
(-19°F)
Minimum -37°C
(-34°F)		 -38°C
(-36°F)		 -27°C
(-17°F)		 -21°C
(-6°F)		 -6°C
(22°F)		 3°C
(38°F)		 10°C
(50°F)		 7°C
(45°F)		 -2°C
(29°F)		 -11°C
(12°F)		 -23°C
(-9°F)		 -34°C
(-29°F)

Compare climate in Sioux Lookout with other places

Compare temperature, precipitation, sunshine, UV index in Sioux Lookout, Ontario, Canada with other places around the world.

Monthly average precipitation in Sioux Lookout, Ontario, Canada §

Sioux Lookout usually has the most precipitation in July, August and September, with an average of 13 rainy days and 107 mm (4.2 inches) of precipitation per month. The driest months in Sioux Lookout are January, February and March. On average, 27 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sioux Lookout, 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) 25 (1.0) 30 (1.2) 25 (1.0) 46 (1.8) 63 (2.5) 84 (3.3) 104 (4.1) 86 (3.4) 133 (5.2) 82 (3.2) 40 (1.6) 38 (1.5)
Average precipitation days (≥ 1 mm) 6 7 5 8 9 12 13 12 16 15 11 9

Monthly sunshine hours in Sioux Lookout, Ontario, Canada §

The sunniest months in Sioux Lookout are June, July and August, when the sun shines an average of 10 hours 52 minutes a day. Least sunny months in Sioux Lookout: January, November and December receive an average of 3 hours 47 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sioux Lookout, 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 107 179 238 260 294 336 357 306 215 148 108 132
Mean daily daylight hours 8h 36m 10h 5m 11h 56m 13h 49m 15h 27m 16h 17m 15h 49m 14h 21m 12h 32m 10h 40m 9h 0m 8h 7m

Solar UV radiation in Sioux Lookout, Ontario, Canada §

Sioux Lookout experiences the highest level of ultraviolet (UV) radiation in May, June and July, 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 exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Sioux Lookout UV Index data.

Average daily maximum UV levels by month for Sioux Lookout, 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 3 5 7 8 9 8 7 6 4 2 1

Detailed Monthly Weather Insights for Sioux Lookout, Ontario, Canada

Discover in-depth weather details for every month in Sioux Lookout. 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 Sioux Lookout'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.