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October Weather Update

October Weather Update: Since last week’s Minnesota WeatherTalk Blog, there have been three significant episodes of Minnesota weather to report on: record heat episode that extended from October 3rd to October 5th; the first rainfall amounts of the month, coming over October 5-6; and then the first widespread frosts of the month coming over October 7 and 8. The weekend of October 3-5 brought brisk south winds, plenty of sunshine and record heat to many areas of the state. Within the state climate network, over 90 stations reported setting new record daily maximum temperatures on at least one day. Observers in 16 counties reported afternoon high temperatures of 90°F or greater, including 92°F at Redwood Falls and Lamberton. In addition, over the weekend there were at least 60 reports of record-setting warm daily overnight temperatures, including 72°F at MSP on the 4th and 70°F at Cass Lake on the 5th. Following the weekend heat, showers and thunderstorms moved across the state later...
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A Warm Start to October

A Warm Start to October: Continuing the trend of late September (September of 2025 was among the 5 or 6 warmest in history on a statewide basis), October has started very warm for Minnesota. Many climate stations reported afternoon temperatures in the 80s F to start the month. Crookston (Polk County) reported a record-tying high temperature of 86°F on October 1st. Then, on October 2nd, 80°F temperatures were even more widespread across the state. Glencoe (McLeod County) set a record high temperature with 87°F, while both Redwood Falls (Redwood County) and St James (Watonwan County) hit 90°F. It appears that the very warm temperatures will last through the first weekend of the month, with some days bringing 90°F temperatures or higher. The weather pattern will chance on Monday with temperatures falling back closer to normal through the middle of next week. On balance, most of the weather guidance favors above normal temperatures to dominate most of October, though probably not re...
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Preliminary Climate Summary for September 2025

Preliminary Climate Summary for September 2025: Despite a cooler than normal start to the month, this September will end up warmer than normal across virtually all of Minnesota. Average monthly temperatures will range from 2°F to 5°F above normal, with dozens of locations reporting at least one 90°F daily maximum temperature. Extremes for the state ranged from 94°F at Worthington (Nobles County), Fairmont (Martin County), and Sherburn (Martin County) on the 13th to just 29°F at Brimson (St Louis County), Hibbing (St Louis County) and International Falls (Koochiching County), all during the first 10 days of the month. Rainfall was mixed during September, with parts of northeastern and southeastern Minnesota receiving the most rainfall. With the forecast calling for dry weather through the end of the month next Tuesday, the current rainfall totals from around the state will remain the same. About a quarter of the climate observers report over 3 inches of rain for the month (above nor...
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Abrupt reversal in temperatures, but still high humidity

Abrupt reversal in temperatures, but still high humidity: After an exceptionally cool start to the month of September when temperatures were averaging 7°F to 9°F below normal with many overnight lows in the 30s F up north, the temperature trend has abruptly reversed itself since last Friday (September 12). Many days have brought afternoon high temperatures in the 80s and even 90s F (55 reports of daily highs in the 90s F since last Friday). And some very warm nights as well, with lows in the upper 60s to low 70s F. MSP tied a record warm minimum temperature for September 15th with a reading of 72°F and at least 7 other climate stations reported record warm minimum temperatures as well. With the forecast calling for above normal temperatures for the balance of the month, it is safe to say that this will be a warmer than normal month of September, despite the cold start to the month. BTW, the current MN-DNR Fall Color update shows that across portions of central and northern Minneso...
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September Weather Update

September Weather Update: Since last week, a number of Minnesota climate stations have reported overnight low temperatures in the 30s F. At least 20 climate stations have reported a frost, and a few others have seen overnight temperatures drop into the upper 20s F. It was just 26°F last Sunday morning (September 7) at Brownton (McLeod County). Average temperatures this month are ranging from 4°F to 8°F below normal so far, but that is about to change with a long run of above normal temperatures coming up and several days expected to bring high temperatures in the 80s F, may a few 90s F, and overnight lows in the 60s F. A few southern Minnesota communities saw 80°F or higher on Thursday of this week. Dew points will also creep upward into the 60s F and low 70s F. Outlook models continue to favor above normal temperatures for most of the balance of September. Rainfall this month has been above normal to near normal in most places around Minnesota. The range across the state has been...
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