Climate Overview
The climate in Mistissini is cold. The average annual temperature is 1°C and approximately 996mm of precipitation falls per year. Mistissini receives a notable amount of rainfall throughout the year, including during its driest month. Mistissini is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, January, March, when temperatures can drop to -22°C. Mistissini experiences heavy snowfall, typically from January through December.
Temperature
Mistissini has a wide annual temperature range, spanning 44°C from the coldest to warmest months. July is the warmest month, though highs remain moderate at 22°C with a mean of 16°C. February brings the harshest conditions, with lows dropping to -22°C and an average temperature of -17°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 8°C shift in average temperatures.
Precipitation
Mistissini is a moderately rainy area, receiving approximately 996mm of precipitation annually, which averages out to around 83mm per month. The wettest month is August, averaging 122mm of rainfall. July and October also tend to see above-average precipitation. The driest month is February, with just 42mm. That's 80mm less than August, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Mistissini receives heavy snowfall, accumulating around 245cm annually from January through December. The snowiest month is November, with approximately 51cm. Winter travel should account for significant snow cover.
Wind
Mistissini is mildly breezy, with an average annual wind speed of 19km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 22km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 17km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h between the calmest and windiest months.
Seasons
88 days until Summer
It is currently spring in Mistissini, which began on March 20, 2026. Mistissini is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 22°C, while the coldest stretch bottoms out in February near -22°C. Summer is next, beginning on June 21, 2026 — 88 days from now.
Spring
Temperatures range from -15 to 13°C. Precipitation is moderate at around 202mm for the season, averaging 67mm per month. Winds are moderate at around 20km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 8 to 22°C. Rainfall is heavy, totalling around 327mm across the season with a monthly average of 109mm. Winds are moderate at around 18km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -5 to 16°C. Rainfall is heavy, totalling around 309mm across the season with a monthly average of 103mm. Expect around 69cm of snow accumulation during this period. Winds are moderate at around 21km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -22 to -8°C. Precipitation is moderate at around 159mm for the season, averaging 53mm per month. Expect around 110cm of snow accumulation during this period. Winds are moderate at around 19km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Monthly Climate Data
The table below shows monthly climate averages for Mistissini based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
