Weather By Day

August Weather In Helena  
August Helena Weather
Record High: 105°F
Normal High: 82°F
Normal Low: 51°F
Record Low: 28°F
Avg Monthly Rain: 1.29"
Rec 1 Day Rain: 1.89"
Avg Monthly Snow: 0.1"
Rec 1 Day Snow: 3.1"

Helena Weather In August

The highest recorded temperature in August for Helena Montana for the past 70 years was 105 degrees Fahrenheit, registered on August 24, 1969, while the standard high temperature is 82. In the last 70 years the highest reported temperature in Helena for August was 28 on August 23, 1992, while the mean low daily temperature during the month is 51.

US National Weather Service historical Helena August Weather data records that on August 23, 1992, the high temperature did not exceed 44 degrees Fahrenheit, the lowest high measured in Helena in the past 70 years. Weather Service data also shows that on August 1, 1900, the lowest recorded temperature for the day did not drop below 72 degrees, the highest low measured temperature in Helena in the last 70 years.

National Weather Service data shows that the high temperature in Helena on August First averages 83 degrees Fahrenheit and the high on the final day of August averages 76 degrees. The average recorded low temperature in Helena on August First is 55 degrees Fahrenheit and the average low on the last day of August is 49 degrees.

Helena usually receives an average of 1.29 inches of precipitation during the month. According to August Helena Weather records, the most rain measured in a single day in August was 1.89 inches on August 20, 1933. Helena averages 0.1 inches of snow in August. The most snow recorded in a single day in August was 3.1 inches on August 23, 1992.