Weather By Day

August Weather In Lewiston  
August Lewiston Weather
Record High: 115°F
Normal High: 88°F
Normal Low: 59°F
Record Low: 41°F
Avg Monthly Rain: 0.75"
Rec 1 Day Rain: 1.36"

Lewiston Weather In August

In the last 64 years the highest measured temperature in Lewiston Idaho for August was 115 degrees Fahrenheit, most recently measured on August 22, 1961, while the normal high temperature is 88. In the last 64 years the highest reported temperature in Lewiston for August was 41 most recently registered on August 25, 1992, and the standard low recorded daily temperature is 59.

According to National Weather Service historical Lewiston August Weather data, on August 23, 1992, the high temperature did not exceed 60 degrees Fahrenheit, the lowest high measured in Lewiston in the past 64 years. Weather Service records additionally indicate that on August 9, 1972, the low for the day was not measured below 76 degrees, the highest low temperature recorded in Lewiston in the last 64 years.

According to the National Weather Service, the high temperature in Lewiston in August on the first day of the month averages 92 degrees and the high on the last day of the month averages 84 degrees. The average daily low temperature in Lewiston on August First is 61 degrees Fahrenheit and the average low on the last day of August is 54 degrees.

Lewiston normally receives an average of 0.75 inches of rain during August. According to August Lewiston Weather records, the most rain measured in a single day in August was 1.36 inches on August 1, 1960.