Helena Weather In October
The record high temperature in Helena for the last 70 years in October was 87 degrees Fahrenheit, most recently registered on October 27, 2001, and the mean high is 58. The coldest day reported in Helena in October for the past 70 years was -8 most recently encountered on October 31, 1935, and the average low daily temperature is 31.
According to National Weather Service historical Helena October Weather data, on October 29, 1935, the high temperature did not exceed 5 degrees Fahrenheit, the lowest high measured in Helena in the past 70 years. NWS weather data additionally shows that on October 3, 1917, the lowest recorded temperature on that day did not drop below 61 degrees, the highest low measured in Helena in the last 70 years.
National Weather Service records indicate that the high temperature in Helena on October First averages 64 degrees and the high on the last day of the month averages 49 degrees. The low recorded temperature in Helena on October First averages 39 degrees Fahrenheit and the low temperature on the final day of October averages 28 degrees.
Helena usually receives an average of 0.66 inches of rain during October. October Helena Weather records show that on October 12, 1920 Helena received 1.16 inches of rain, the most rain measured in a single day in October. Helena receives an average of 2.3 inches of snow in October.On October 5, 1914 Helena received 9.5 inches of precipitation, the highest snowfall recorded in a single day in October.