In Idaho, summers are brief, warm, dry, and mostly clear, while winters are freezing, snowy, and partly cloudy. Throughout the year, temperatures typically range from 17°F to 87°F, with rare occurrences below 1°F or above 94°F.

According to the tourism score, the optimal time for warm-weather activities in Idaho is from early July to mid-August.

In Idaho, temperatures vary notably between seasons. The hot season spans about 2.9 months, from June 16 to September 11, with daily high temperatures consistently above 75°F. July typically marks the peak of heat, with an average high of 85°F and a low of 52°F.

On the other hand, the cold season extends for roughly 3.3 months, from November 16 to February 25, featuring daily high temperatures below 41°F. January is the coldest month, with an average low of 18°F and a high of 32°F.

See more: https://weatherusa.app/idaho

To provide insight into variations within each month, rather than focusing solely on monthly totals, we present the rainfall accumulated over a sliding 31-day period centered around each day of the year. Idaho experiences some seasonal differences in monthly rainfall.

The rainy season spans approximately 9.7 months, from September 5 to June 27, with a sliding 31-day rainfall exceeding 0.5 inches. November typically sees the most rain in Idaho, with an average rainfall of 1.8 inches.

Conversely, the dry season extends for roughly 2.3 months, from June 27 to September 5. July stands out as the driest month in Idaho, with an average rainfall of 0.3 inches.