Preliminary Climate Summary for October. It appears that mean October temperatures will range from 1 to 3 degrees F warmer than normal for most communities around the state. Temperature extremes during the month ranged from just 13 degrees F at Embarrass back on the 2nd, to 90 degrees F at Milan on the 7th and at Browns Valley on the 7th and the 20th..the latter being a new all-time state high temperature for that date.