Climate Overview
The climate in Green Mountain Airport is temperate. The average annual temperature is 12°C and approximately 1506mm of precipitation falls per year. January is the wettest month, receiving around 221mm of rainfall. Green Mountain 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 December, February, January, when temperatures can drop to 2°C. Light snow can occur between January and December.
Temperature
Temperatures in Green Mountain Airport vary considerably across the year, with a 28°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 30°C and the mean temperature sits around 21°C. December is the coolest month, with minimum temperatures around 2°C and an average of 4°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 6°C shift in average temperatures.
Precipitation
Green Mountain Airport is a fairly wet location, receiving approximately 1506mm of precipitation annually, which averages out to around 126mm per month. The wettest month is January, averaging 221mm of rainfall. December and February also tend to see above-average precipitation. The driest month is August, with just 9mm. That's 212mm 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. Light snowfall can occur between January and December, totalling around 47cm annually. February is the snowiest month with approximately 19cm.
Wind
Green Mountain 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 January, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
7 days until Summer
It is currently spring in Green Mountain Airport, which began on March 20, 2026. Green Mountain 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 30°C, while the coldest stretch bottoms out in December near 2°C. Summer is next, beginning on June 21, 2026 — 7 days from now.
Spring
Temperatures range from 4 to 22°C. Rainfall is heavy, totalling around 386mm across the season with a monthly average of 129mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 11 to 30°C. Rainfall is relatively light, with around 77mm over the season and a monthly average of 26mm. Winds are generally light, averaging 2km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 5 to 24°C. Rainfall is heavy, totalling around 442mm across the season with a monthly average of 147mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 2 to 10°C. Rainfall is heavy, totalling around 601mm across the season with a monthly average of 200mm. Expect around 40cm of snow accumulation during this period. Winds are generally light, averaging 2km/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 Green Mountain Airport is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 37mm per month. By contrast, December can be quite cold with temperatures dropping to 2°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 Green Mountain 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.
