Temperatures during the first half of October were above average, but they were below average during the second half of the month. Early in the month, high temperatures were in the 70s, up to 12 degrees above normal. In contrast, highs during the third week of the month were in the 40s, up to 12 degrees below average. Low temperatures were above average during the first half of the month as well, delaying the first freeze of the season. Madison reached freezing on Oct. 19, which is the latest first freeze in the past 30 years! Milwaukee first dropped to freezing on Oct. 22. On average, Madison has reached 32 degrees by Oct. 2 and Milwaukee by Oct. 19.
For the month as a whole, temperatures ended up being very close to average. Precipitation was close to average across most of southern Wisconsin, however there were deficits of 1 to 2 inches in southwest Wisconsin. Parts of southeast Wisconsin were above average. Milwaukee was almost an inch above normal for the month.
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Looking ahead, the Climate Prediction Center's monthly outlook has south central and southeast Wisconsin in the equal chances category – that is to say this period has equal chances for above, near, or below normal temperatures. Extreme southern Wisconsin has increased chances for above normal precipitation in November.