Climate Overview
The climate in Mountain Home Municipal Airport is temperate. The average annual temperature is 12°C and approximately 331mm of precipitation falls per year. January is the wettest month, receiving around 58mm of rainfall. Mountain Home Municipal 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 -4°C. Snowfall occurs from January to December, with around 84cm accumulating over the season.
Temperature
Mountain Home Municipal Airport has a wide annual temperature range, spanning 39°C from the coldest to warmest months. July is the hottest month, with daytime highs reaching 35°C and an average of 27°C. The coldest month is December, when overnight lows fall to -4°C and the daily average is 0°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 8°C shift in average temperatures.
Precipitation
Mountain Home Municipal Airport is a quite dry location, receiving approximately 331mm of precipitation annually, which averages out to around 28mm per month. The wettest month is January, averaging 58mm of rainfall. February and March also tend to see above-average precipitation. The driest month is July, with just 2mm. That's 56mm 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. Snowfall is a regular feature from January to December, with around 84cm accumulating over the season. January typically sees the most snow at around 27cm.
Wind
Mountain Home Municipal Airport is relatively calm, with an average annual wind speed of 3km/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 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 3km/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
80 days until Autumn
It is currently summer in Mountain Home Municipal Airport, which began on June 21, 2026. Mountain Home Municipal 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 35°C, while the coldest stretch bottoms out in December near -4°C. Autumn is next, beginning on September 23, 2026 — 80 days from now.
Spring
Temperatures range from 3 to 24°C. Rainfall is relatively light, with around 107mm over the season and a monthly average of 36mm. 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 13 to 35°C. Precipitation is minimal, with only around 20mm for the entire season. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 1 to 28°C. Rainfall is relatively light, with around 66mm over the season and a monthly average of 22mm. Expect around 9cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -4 to 8°C. Rainfall is relatively light, with around 138mm over the season and a monthly average of 46mm. Expect around 66cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Best Time to Visit
The best time to visit Mountain Home Municipal Airport is during May, June and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 21mm per month. By contrast, July can be uncomfortably hot with highs reaching 35°C, while December is the coldest period with lows dropping to -4°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.
Monthly Climate Data
The table below shows monthly climate averages for Mountain Home Municipal 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.
