With just four days left in September, how can we characterize the month's weather Most places have reported warmer than normal conditions, with average monthly temperatures from 1 to 3 degrees greater than the historical average. The highest temperature in the state was 97 degrees F at Browns Valley on the 6th, while the lowest was 27 degrees F at Embarrass on the 16th. However it appears even colder air may affect the state on the 29th and 30th.