Weather By Day

May Weather In Boise  
May Boise Weather
Record High: 99°F
Normal High: 71°F
Normal Low: 47°F
Record Low: 22°F
Avg Monthly Rain: 1.27"
Rec 1 Day Rain: 1.77"
Avg Monthly Snow: 0.1"
Rec 1 Day Snow: 4"

Boise Weather In May

The record high May temperature in Boise Idaho for the last 71 years was 99 degrees Fahrenheit, most recently registered on May 28, 2003, while the average high temperature is 71. The coldest day reported in Boise in May for the past 71 years was 22 most recently encountered on May 5, 1982, and the regular low is 47.

According to National Weather Service Boise May Weather data, on May 2, 1964, the recorded high temperature did not exceed 42 degrees Fahrenheit, the lowest high measured in Boise in the past 71 years. The Weather Service additionally indicates that on May 23, 1958, the low for the day did not drop below 65 degrees, the highest low recorded in Boise in the last 71 years.

Historical weather data accumulated by the National Weather Service shows that the average daily high temperature in Boise on May First is 79 degrees Fahrenheit and the average high on the last day of May is 78 degrees. The low recorded temperature in Boise on May First averages 69 degrees Fahrenheit and the low temperature on the final day of May averages 66 degrees.

Boise typically receives an average of 1.27 inches of precipitation during the month. May Boise Weather records indicate that on May 29, 1990 Boise received 1.77 inches of precipitation, the highest amount of rain recorded in a single day in May. Boise averages 0.1 inches of snow in May.On May 2, 1964 Boise received 4 inches of precipitation, the highest snowfall recorded in a single day in May.