Sioux Lookout Average Temperature by Month

This page shows the average temperature in each month of the year in Sioux Lookout, Ontario. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Sioux Lookout?
In Sioux Lookout, Ontario, the warmest month is July, with an average daily high temperature of 24.3 °C and an average low of 13.4 °C.
What's the Coldest Month in Sioux Lookout?
In Sioux Lookout, Ontario, the coolest month is January, with an average daily high temperature of -12.1 °C and an average low of -22.3 °C.
Month Avg. High Avg. Low
January -12.1 °C -22.3 °C
February -7.7 °C -19.5 °C
March -0.1 °C -12.3 °C
April 8.7 °C -3.1 °C
May 16.1 °C 4.1 °C
June 22.1 °C 10.7 °C
July 24.3 °C 13.4 °C
August 23.2 °C 12.5 °C
September 17.3 °C 7.5 °C
October 8.4 °C 0.7 °C
November -0.9 °C -7.8 °C
December -8.7 °C -17.3 °C
Year 7.6 °C -2.7 °C
Weather Station Details
Years Station Coordinates
1938–2024 Sioux Lookout A location
1933–1938 Sioux Lookout location
1914–1932 Sioux Lookout location
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