Climate Overview
The climate in Yellowstone Regional Airport is cool. The average annual temperature is 6°C and approximately 454mm of precipitation falls per year. May is the wettest month, receiving around 74mm of rainfall. Yellowstone Regional 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 December, February, January, when temperatures can drop to -12°C. Snowfall occurs from January to December, with around 147cm accumulating over the season.
Temperature
Yellowstone Regional Airport has a wide annual temperature range, spanning 42°C from the coldest to warmest months. The warmest month is July, when average highs reach 30°C and the mean temperature sits around 21°C. The coldest month is December, when overnight lows fall to -12°C and the daily average is -7°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 9°C shift in average temperatures.
Precipitation
Yellowstone Regional Airport is a relatively dry area, receiving approximately 454mm of precipitation annually, which averages out to around 38mm per month. The wettest month is May, averaging 74mm of rainfall. April and June also tend to see above-average precipitation. The driest month is January, with just 17mm. That's 57mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 147cm accumulating over the season. February typically sees the most snow at around 25cm.
Wind
Yellowstone Regional Airport is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 2km/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
4 days until Summer
It is currently spring in Yellowstone Regional Airport, which began on March 20, 2026. Yellowstone Regional 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 30°C, while the coldest stretch bottoms out in December near -12°C. Summer is next, beginning on June 21, 2026 — 4 days from now.
Spring
Temperatures range from -4 to 18°C. Precipitation is moderate at around 164mm for the season, averaging 55mm per month. Winds are generally light, averaging 3km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 10 to 30°C. Rainfall is relatively light, with around 104mm over the season and a monthly average of 35mm. Winds are generally light, averaging 2km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -6 to 22°C. Rainfall is relatively light, with around 122mm over the season and a monthly average of 41mm. Expect around 38cm of snow accumulation during this period. Winds are generally light, averaging 2km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -12 to 0°C. Rainfall is relatively light, with around 64mm over the season and a monthly average of 21mm. Expect around 60cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Best Time to Visit
The best time to visit Yellowstone Regional Airport is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 35mm per month. By contrast, December can be quite cold with temperatures dropping to -12°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Yellowstone Regional 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.
