Climate Overview
The climate in Grants-Milan Municipal Airport is temperate. The average annual temperature is 10°C and approximately 308mm of precipitation falls per year. July is the wettest month, receiving around 56mm of rainfall. Grants-Milan Municipal Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, December, February, when temperatures can drop to -8°C. Snowfall occurs from January to December, with around 58cm accumulating over the season.
Temperature
Grants-Milan Municipal Airport has a wide annual temperature range, spanning 36°C from the coldest to warmest months. The warmest month is July, when average highs reach 28°C and the mean temperature sits around 22°C. The coldest month is January, when overnight lows fall to -8°C and the daily average is -2°C. On average, daily temperatures fluctuate by about 14°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.
Precipitation
Grants-Milan Municipal Airport is a quite dry location, receiving approximately 308mm of precipitation annually, which averages out to around 26mm per month. The wettest month is July, averaging 56mm of rainfall. August and September also tend to see above-average precipitation. The driest month is November, with just 17mm. That's 40mm less than July, 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 58cm accumulating over the season. January typically sees the most snow at around 15cm.
Wind
Grants-Milan Municipal Airport is mildly breezy, with an average annual wind speed of 19km/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 25km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 10km/h gap between the calmest and windiest months.
Seasons
83 days until Summer
It is currently spring in Grants-Milan Municipal Airport, which began on March 20, 2026. Grants-Milan 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 28°C, while the coldest stretch bottoms out in January near -8°C. Summer is next, beginning on June 21, 2026 — 83 days from now.
Spring
Temperatures range from -1 to 22°C. Rainfall is relatively light, with around 62mm over the season and a monthly average of 21mm. Winds are moderate at around 24km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 12 to 28°C. Rainfall is relatively light, with around 113mm over the season and a monthly average of 38mm. Winds are moderate at around 17km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from -2 to 25°C. Rainfall is relatively light, with around 70mm over the season and a monthly average of 23mm. Expect around 8cm of snow accumulation during this period. Winds are moderate at around 18km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -8 to 8°C. Rainfall is relatively light, with around 63mm over the season and a monthly average of 21mm. Expect around 36cm of snow accumulation during this period. Winds are moderate at around 18km/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 Grants-Milan Municipal Airport is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 36mm per month. By contrast, January can be quite cold with temperatures dropping to -8°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 Grants-Milan 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.
