Climate Insights for Fort Simpson Airport

The climate in Fort Simpson Airport is cold. The average annual temperature is -1°C and approximately 309mm of precipitation falls per year. June is the wettest month, receiving around 53mm of rainfall. Fort Simpson Airport 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 January, December, February, when temperatures can drop to -24°C. Snowfall occurs from January to December, with around 75cm accumulating over the season.

Fort Simpson Airport has a wide annual temperature range, spanning 50°C from the coldest to warmest months. The warmest month is July, when average highs reach 26°C and the mean temperature sits around 19°C. January brings the harshest conditions, with lows dropping to -24°C and an average temperature of -21°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 13°C shift in average temperatures.

Fort Simpson Airport is a quite dry location, receiving approximately 309mm of precipitation annually, which averages out to around 26mm per month. The wettest month is June, averaging 53mm of rainfall. August and July also tend to see above-average precipitation. The driest month is February, with just 12mm. That's 41mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 75cm accumulating over the season. November typically sees the most snow at around 14cm.

Fort Simpson Airport is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is May, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.

It is currently spring in Fort Simpson Airport, which began on March 20, 2026. Fort Simpson Airport 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 26°C, while the coldest stretch bottoms out in January near -24°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Fort Simpson Airport is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 53mm per month. By contrast, January can be quite cold with temperatures dropping to -24°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Fort Simpson Airport 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.