Climate Overview
The climate in Stehekin State Airport is cool. The average annual temperature is 3°C and approximately 1886mm of precipitation falls per year. January is the wettest month, receiving around 299mm of rainfall. Stehekin State Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are February, December, January, when temperatures can drop to -8°C. Stehekin State Airport experiences heavy snowfall, typically from January through December.
Temperature
Temperatures in Stehekin State Airport vary considerably across the year, with a 29°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 21°C with a mean of 13°C. The coldest month is February, when overnight lows fall to -8°C and the daily average is -5°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.
Precipitation
Stehekin State Airport is a fairly wet location, receiving approximately 1886mm of precipitation annually, which averages out to around 157mm per month. The wettest month is January, averaging 299mm of rainfall. December and November also tend to see above-average precipitation. The driest month is August, with just 21mm. That's 278mm less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Stehekin State Airport receives heavy snowfall, accumulating around 1354cm annually from January through December. The snowiest month is January, with approximately 282cm. Winter travel should account for significant snow cover.
Wind
Stehekin State Airport is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
72 days until Autumn
It is currently summer in Stehekin State Airport, which began on June 21, 2026. Stehekin State 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 August at around 21°C, while the coldest stretch bottoms out in February near -8°C. Autumn is next, beginning on September 23, 2026 — 72 days from now.
Spring
Temperatures range from -5 to 12°C. Rainfall is heavy, totalling around 406mm across the season with a monthly average of 135mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 4 to 21°C. Rainfall is relatively light, with around 132mm over the season and a monthly average of 44mm. Winds are generally light, averaging 2km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -4 to 15°C. Rainfall is heavy, totalling around 562mm across the season with a monthly average of 187mm. Expect around 298cm of snow accumulation during this period. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -8 to -2°C. Rainfall is heavy, totalling around 786mm across the season with a monthly average of 262mm. Expect around 742cm of snow accumulation during this period. Winds are generally light, averaging 1km/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 Stehekin State 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.
