Climate Insights for Alta

The climate in Alta is cold. The average annual temperature is 1°C and approximately 758mm of precipitation falls per year. Alta receives a notable amount of rainfall throughout the year, including during its driest month. Alta 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 January, February, December, when temperatures can drop to -13°C. Alta experiences heavy snowfall, typically from January through December.

Temperatures in Alta vary considerably across the year, with a 30°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 17°C with a mean of 13°C. The coldest month is January, when overnight lows fall to -13°C and the daily average is -10°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Alta is a relatively dry area, receiving approximately 758mm of precipitation annually, which averages out to around 63mm per month. The wettest month is August, averaging 89mm of rainfall. June and July also tend to see above-average precipitation. The driest month is December, with just 47mm. That's 43mm less than August, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Alta receives heavy snowfall, accumulating around 327cm annually from January through December. The snowiest month is March, with approximately 52cm. Winter travel should account for significant snow cover.

Alta is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

It is currently autumn in Alta, which began on September 23, 2026. Alta 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 17°C, while the coldest stretch bottoms out in January near -13°C. Winter is next, beginning on December 21, 2026 (87 days from now).

The table below shows monthly climate averages for Alta 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.