Twin Falls (ID) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Twin Falls.
Climate overview of Twin Falls
Twin Falls, Idaho, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 33°C (91°F) in July, while winters cool to 3°C (37°F) in January.
Rain/snowfall is modest, totalling around 252 mm (9.9 in) annually. The city experiences very little rainfall year-round, with very warm summers and cold winters. December tends to be the wettest month.
Twin Falls Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Twin Falls - and find the best time to visit.
Monthly Temperature in Twin Falls
Depending on the time of the year, temperatures range from very warm to chilly in Twin Falls. Average maximum daytime temperatures range from a very warm 33°C (91°F) in July, the warmest time of the year, to a chilly 3°C (37°F) during cooler months like January.
At night, you can expect temperatures ranging from 15°C (59°F) in July to around -6°C (21°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Twin Falls
Twin Falls has a relatively dry climate with low precipitation, averaging 252 mm (9.9 in) of rain/snowfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate snow/rainfall, averaging 35 mm (1.4 in) of precipitation, recorded across 14 snowy/rainy days. In contrast, the driest month July brings less rainfall, with 4.9 mm (0.2 in) over 4 rainy days. For more details, please visit our Twin Falls Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Twin Falls
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, September and October
- Warmest weather: July
- Fewest rainy days: July, August and September
- Seasonal pattern: Very little rainfall year-round, with very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in Twin Falls
What is the best time to visit Twin Falls?
May, June, September and October typically offer the most optimal weather in Twin Falls. In contrast, January and December tend to have less optimal conditions. Twin Falls has very little rainfall year-round, with very warm summers and cold winters.
What temperatures can I expect in Twin Falls?
Daytime highs range from 3°C (37°F) in January to 33°C (91°F) in July. Nighttime lows range from -6°C (21°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Twin Falls get?
Annual rainfall is around 252 mm (9.9 in). December is the wettest month with 35 mm (1.4 in), while July is the driest with 4.9 mm (0.2 in). In the coldest months, precipitation may fall as snow/rain.
Twin Falls 3-Day Forecast
Twin Falls (ID) 3-Day Forecast
Twin Falls on the map
Twin Falls is highlighted - select any city to see its climate.
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