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Climate Summary for September of 2026

Climate Summary for September of 2026: For the 4th consecutive year Minnesota recorded a very warm September. Most climate stations reported a mean monthly temperature that was 3°F to 5°F above normal. Overall, with a statewide average monthly temperature of 61.7°F, this September ranked as the 10th warmest in state history. Extremes for the month were 95°F at Madison (Lac Qui Parle County) on the 2nd, and 25°F at Celina (St Louis County) on the 22nd. Frosts occurred in 9 northern counties this month but were not present in the rest of the state. Within the statewide long term climate network, there were 11 high maximum daily temperature records broken or tied, including 91°F at Wells (Faribault County) on the 6th. Similarly, there were over 40 warm overnight daily minimum temperature records broken or tied, including 71°F at Austion (Mower County) on the 4th. In terms of rainfall, nearly all climate observers, except for a few in western counties, reported above normal amounts ...
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Welcome Rains

Welcome Rains: Since last Friday (September 11) many climate observers have reported significant rainfall. In fact, over 150 climate stations have reported receiving between 1.50 inches and 2.50 inches of rain. Portions of Wadena and Fillmore Counties reported over 3 inches of rain over the past week. There were even a couple of reports of daily record rainfall. Hokah (Houston County) reported a record 2.05 inches on September 15th, while Delano (Wright County) a record 1.70 inches on September 17th. Rainfall totals through the first 17 days of the month now exceed 3 inches in 20 Minnesota counties. Of further note, Friday will bring chances for significant rainfall across a wide area of the southern half of the state, and for the balance of the month, there will be more frequent chances for rainfall during the last week of the month. Drought conditions across the state remain a concern with 38 percent of the state in Moderate Drought, 29 percent in Severe Drought (a drop of 13 p...
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Warm Start to September Coming to an End

  Warm Start to September Coming to an End: Through the first 10 days of the month, temperatures have been averaging from 5°F to 10°F above normal in most areas of Minnesota. In fact, temperatures of 90°F or higher have been reported in 33 counties. Within the state climate stations network there have been 9 reports of new daily record high temperatures, including 94°F a Theilman (Wabasha County) on the 5th, and 15 reports of record warm overnight temperatures, including 72°F at Pipestone on the 6th. The warmer than normal temperature pattern will end this weekend and a period of cooler than normal temperatures will begin. Starting on Saturday and running through most of next week much cooler air will blanket the state, bringing overnight low temperatures in the 40s F and 50s F, even some upper 30s F in northern counties. Though cooler, these temperatures are no where near record lows for this time of year. Some fairly widespread rain over the past week was very welcome across...
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Warm Start to September

Warm Start to September: The month of September has clearly started warm, with daily average temperatures at most locations in Minnesota running from 5°F to 9°F above normal. In fact, 11 counties have already reported at least one daily maximum temperature of 90°F or higher. This should not be unexpected as 11 of the last 15 Septembers (73 percent) have started out warmer than normal during the first week of the month. The NOAA outlook models continue to favor warmer than normal temperatures through at least mid-month. Though rainfall over the first few days of the month has been highly variable across the state, a number of observers in southern counties have reported receiving over 1 inch of rain. Some severe thunderstorms moved across northern parts of the Red River Valley, while other thunderstorms moved across the Minnesota State Fairgrounds on Thursday afternoon dropping the temperature by about 10°F and causing attendees to hurry for cover. In Marshall Polk, and Clay Count...
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Preliminary August Climate Summary

Preliminary August Climate Summary: For many climate stations in Minnesota, especially in the northern half of the state, the mean August temperature will end up being very close to normal, perhaps a degree either side of normal. For many southern Minnesota climate stations, the mean August temperature will range from 1°F to 3°F above normal. Only observers in Clay, Sherburne, Norman, Polk. Lyon, and Red Lake Counties reported a daily high temperature of 90°F or higher. Most days brought temperatures in the 70s F and 80s F. Extremes for the month ranged from 98°F at Red Lake Falls on the 2nd to 33°F at Tower on the 19th. Not many temperature records were reported from within the state climate station network. Most climate observers reported below normal rainfall for the month, except for some locations in south-central and southeastern Minnesota where a few heavy thunderstorms occurred. A few places reported some record daily rainfall, including: 3.25” at Grand Meadow on the 1st ...
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