Nampa, ID has a semi-arid climate typical of the Great Plains. Summers are generally hot and dry, with temperatures reaching up to 90 degrees Fahrenheit in the hottest months. Winters are mild but can bring cold spells with temperatures sometimes dropping below freezing. Precipitation is limited, averaging only around 12 inches annually, which mostly falls as light rain or snow from December to March. The region usually experiences low humidity and wide variations in temperature between day and night. All in all, it’s a pleasant climate that makes Nampa a great place to live year round.
Nampa, Idaho gets 11 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Nampa averages 9 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 207 sunny days per year in Nampa. The US average is 205 sunny days.
Nampa gets some kind of precipitation, on average, 80 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 91 degrees
Winter Low: the January low is 24
Rain: averages 11 inches of rain a year
Snow: averages 9 inches of snow a year