Windy then cool:
In the Twin Cities area from noon on August 22nd to 5pm on August 24th over half of all hours MSP reported a mean wind speed over 20 mph, with peak wind gusts over 45 mph. Other stations reporting wind gusts over 45 mph included Rochester, Ely, Crookston, and Hallock. Both Elbow Lake (Grand County) and Flag Island (Lake of the Woods County) reported wind gusts over 50 mph, not good for those fishermen out on Lake of the Woods.
One positive dimension to this unusual windy period was that persistent smoke from Canada's summer wildfire season was temporarily flushed out of the state. Also following the passage of the low pressure system cooler air from Canada with much lower dew points brought some morning low temperatures in the 30s F to International Falls, Cass Lake, Grand Rapids, Thorhult, Brimson, Cotton, Floodwood, Kabetogama, Orr, Tower, and of course Embarrass (just 33°F). The cool air mass also brought some record cold maximum temperatures to a few Minnesota communities including 58°F at Cotton and Cass Lake on the 24th, and even more on August 25th which included a very chilly 49°F at Isabella, 51°F at Ely, Cook, and Tower, 56°F at Bruno (Pine County), and 58°F at Isle (Mille Lacs County).
State Fair Weather:
As for weather during the State Fair: the historical average daytime temperatures are in the upper 70s to lower 80s F, with nights ranging from the upper 50s to low 60s F. It typically rains on 3-4 days during the fair. Current modeled forecasts favor near normal temperatures this weekend, warming to above normal conditions most of next week, with a cool down and chance of showers and thunderstorms for the Labor Day weekend.
Record climate values for the State Fair include: a high temperature of 104°F on September 10, 1931; a low of 33°F on September 13, 1890; and rainfall of 4.06 inches on August 30, 1977. Much more on the weather history of the Minnesota State Fair can be found at the DNR-State Climatology Office.
Twin Cities Dew Point Climatology:
Weekly Weather Potpourri:
MPR Listener Question:
Twin Cities Almanac for August 28th:
The average MSP high temperature for this date is 78 degrees F (plus or minus 9 degrees F standard deviation), while the average low is 60 degrees F (plus or minus 7 degrees F standard deviation).
MSP Local Records for August 28th:
MSP weather records for this date include: highest daily maximum temperature of 94 degrees F in 1899 and 1955; lowest daily maximum temperature of 61 degrees F in 1935: lowest daily minimum temperature is 42 degrees F in 1934; highest daily minimum temperature of 75 F in 1969; record precipitation of 1.11 inches 1950; and no snowfall has been recorded on this date.
Average dew point for August 28th is 59 degrees F, with a maximum of 77 degrees F in 1955 and a minimum of 34 degrees F in 1946.
All-Time State Records for August 28th:The state record high temperature for this date is 104 degrees F at Canby (Yellow Medicine County) in 1937. The state record low temperature for this date is 21 degrees F at Tower (St Louis County) in 1986. State record precipitation for this date is 6.00 inches at Litchfield (Meeker County) in 1960; and there has not been any snowfall on this date.
Past Weather Features:
Strong and widespread thunderstorms brought heavy rainfall to the state over August 28-29, 1960. Many observers reported 2 to 4 inches of rainfall from these storms, including over 6 inches at Litchfield, with some local flash flooding.
Over August 27-28, 1984 many Minnesota weather observers reported record-setting high temperatures. Several climate stations in the Red River Valley reached 100°F, and even Gunflint Lake reported 96°F. Thunderstorms and an associated cold front dropped the temperatures back into the 70s F by the end of the month.
Baseball size hail fell at Pequot Lakes on August 28, 1989, causing some damage to cars and buildings in the area.