Last updated: June 18, 2025
In Sioux Lookout, Canada, the average temperature in May hovers around 10°C (50°F), but be prepared for a temperature range that can dip to -6°C (22°F) and rise all the way to 28°C (84°F). You'll experience 63 mm (2.5 in) of precipitation spread over about 9 days, while the air carries an average humidity of 75%.
In May in Sioux Lookout, the average temperature is 10°C (50°F). The maximum can reach 28°C (84°F) and the minimum can be as low as -6°C (22°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your trip.
In Sioux Lookout in May, the total precipitation amount is 63 mm (2.5 in) spread over a duration of 9 days.
In Sioux Lookout in May humidity is 75%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and necessitating extra layers for warmth and comfort.
In Sioux Lookout in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Sioux Lookout.
UV Risk Categories
Weather in Sioux Lookout varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Sioux Lookout, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -15°C (5°F) | 25 mm (1.0 inches) | 96% | low |
February Weather | -15°C (4°F) | 30 mm (1.2 inches) | 96% | moderate |
March Weather | -6°C (22°F) | 25 mm (1.0 inches) | 93% | moderate |
April Weather | 0°C (33°F) | 46 mm (1.8 inches) | 90% | high |
May Weather | 10°C (50°F) | 63 mm (2.5 inches) | 75% | very high |
June Weather | 17°C (64°F) | 84 mm (3.3 inches) | 66% | very high |
July Weather | 20°C (68°F) | 104 mm (4.1 inches) | 62% | very high |
August Weather | 18°C (65°F) | 86 mm (3.4 inches) | 67% | high |
September Weather | 12°C (54°F) | 133 mm (5.2 inches) | 73% | high |
October Weather | 5°C (41°F) | 82 mm (3.2 inches) | 82% | moderate |
November Weather | -6°C (22°F) | 40 mm (1.6 inches) | 90% | low |
December Weather | -12°C (10°F) | 38 mm (1.5 inches) | 96% | low |