Climate Overview
The climate in Deer Lodge-City-County Airport is cool. The average annual temperature is 4°C and approximately 544mm of precipitation falls per year. June is the wettest month, receiving around 85mm of rainfall. Deer Lodge-City-County 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, January, February, when temperatures can drop to -11°C. Snowfall occurs from January to December, with around 169cm accumulating over the season.
Temperature
Deer Lodge-City-County Airport has a wide annual temperature range, spanning 38°C from the coldest to warmest months. The warmest month is July, when average highs reach 27°C and the mean temperature sits around 18°C. The coldest month is December, when overnight lows fall to -11°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 7°C shift in average temperatures.
Precipitation
Deer Lodge-City-County Airport is a relatively dry area, receiving approximately 544mm of precipitation annually, which averages out to around 45mm per month. The wettest month is June, averaging 85mm of rainfall. May and April also tend to see above-average precipitation. The driest month is January, with just 28mm. That's 57mm less than June, 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 169cm accumulating over the season. February typically sees the most snow at around 29cm.
Wind
Deer Lodge-City-County 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 April, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 11km/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.
Seasons
88 days until Summer
It is currently spring in Deer Lodge-City-County Airport, which began on March 20, 2026. Deer Lodge-City-County 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 27°C, while the coldest stretch bottoms out in December near -11°C. Summer is next, beginning on June 21, 2026 — 88 days from now.
Spring
Temperatures range from -7 to 15°C. Precipitation is moderate at around 180mm for the season, averaging 60mm per month. Winds are generally light, averaging 14km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 6 to 27°C. Rainfall is relatively light, with around 146mm over the season and a monthly average of 49mm. Winds are generally light, averaging 13km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -7 to 20°C. Rainfall is relatively light, with around 116mm over the season and a monthly average of 39mm. Expect around 33cm of snow accumulation during this period. Winds are generally light, averaging 13km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -11 to 0°C. Rainfall is relatively light, with around 102mm over the season and a monthly average of 34mm. Expect around 73cm of snow accumulation during this period. Winds are generally light, averaging 13km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Best Time to Visit
The best time to visit Deer Lodge-City-County Airport is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 31mm per month. By contrast, December can be quite cold with temperatures dropping to -11°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 Deer Lodge-City-County 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.
