Alta (UT) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Alta.
Climate overview of Alta
Temperatures in Alta, Utah, United States of America, vary greatly throughout the year. July is the hottest month at 21°C (70°F), while December is the coldest at -1°C (30°F).
With around 1254 mm (49 in) of annual rain/snowfall, Alta has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has pleasant summers and very cold winters. The wettest month is December. Sunshine peaks in July, when the city sees around 12.6 hours of sunshine per day.
Alta Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Alta - and find the best time to visit.
Monthly Temperature in Alta
The climate in Alta is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a pleasant 21°C (70°F) in July. In December, the coolest month of the year, temperatures drop to a very cold -1°C (30°F).
At night, temperatures range from around 11°C (52°F) in July to -10°C (14°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Alta
Alta has a notably wet climate with abundant precipitation, recording 1254 mm (49 in) of rain/snowfall per year. Alta can be quite wet during December, receiving approximately 161 mm (6.3 in) of precipitation over 20 snowy days.
In contrast, during the driest month (July), you will experience much drier conditions, with 35 mm (1.4 in) of precipitation spread across 10 rainy days. For more details, please visit our Alta Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Alta
Alta can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 12.6 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 3.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Best Time to Visit Alta
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and August
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: June
- Seasonal pattern: Pleasant summers and very cold winters
- Coldest conditions: December, with freezing nights around -10°C (14°F).
Frequently asked questions about the climate in Alta
What is the best time to visit Alta?
July and August typically offer the most optimal weather in Alta. In contrast, January, February, March, April, May, October, November and December tend to have less optimal conditions. Alta has pleasant summers and very cold winters.
What temperatures can I expect in Alta?
Daytime highs range from -1°C (30°F) in December to 21°C (70°F) in July. Nighttime lows range from -10°C (14°F) to 11°C (52°F). Temperatures vary considerably through the year.
How much rain does Alta get?
Annual rainfall is around 1254 mm (49 in). December is the wettest month with 161 mm (6.3 in), while July is the driest with 35 mm (1.4 in). In the coldest months, precipitation may fall as snow.
How sunny is Alta?
Alta receives around 2,983 hours of sunshine per year. July is the sunniest month with 378 hours, while December is the cloudiest with just 110 hours. Overall, Alta enjoys abundant sunshine.
Alta 3-Day Forecast
Alta on the map
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