Climate Overview
The climate in Granby-Grand County Airport is cold. The average annual temperature is 2°C and approximately 560mm of precipitation falls per year. May is the wettest month, receiving around 62mm of rainfall. Granby-Grand 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 -14°C. Granby-Grand County Airport experiences heavy snowfall, typically from January through December.
Temperature
Granby-Grand County Airport has a wide annual temperature range, spanning 36°C from the coldest to warmest months. July is the warmest month, though highs remain moderate at 22°C with a mean of 14°C. The coldest month is December, when overnight lows fall to -14°C and the daily average is -9°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
Granby-Grand County Airport is a relatively dry area, receiving approximately 560mm of precipitation annually, which averages out to around 47mm per month. The wettest month is May, averaging 62mm of rainfall. April and March also tend to see above-average precipitation. The driest month is September, with just 25mm. That's 37mm less than May, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Granby-Grand County Airport receives heavy snowfall, accumulating around 280cm annually from January through December. The snowiest month is March, with approximately 42cm. Winter travel should account for significant snow cover.
Wind
Granby-Grand County Airport is mildly breezy, with an average annual wind speed of 15km/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 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months.
Seasons
83 days until Summer
It is currently spring in Granby-Grand County Airport, which began on March 20, 2026. Granby-Grand 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 22°C, while the coldest stretch bottoms out in December near -14°C. Summer is next, beginning on June 21, 2026 — 83 days from now.
Spring
Temperatures range from -8 to 10°C. Precipitation is moderate at around 180mm for the season, averaging 60mm per month. Winds are moderate at around 16km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 3 to 22°C. Rainfall is relatively light, with around 118mm over the season and a monthly average of 39mm. Winds are generally light, averaging 14km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -11 to 18°C. Rainfall is relatively light, with around 108mm over the season and a monthly average of 36mm. Expect around 55cm of snow accumulation during this period. Winds are generally light, averaging 15km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -14 to -2°C. Precipitation is moderate at around 154mm for the season, averaging 51mm per month. Expect around 116cm of snow accumulation during this period. Winds are moderate at around 15km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Monthly Climate Data
The table below shows monthly climate averages for Granby-Grand 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.
