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Return to Cooler Than Normal Temperatures

Return to Cooler Than Normal Temperatures:
The return of cooler than normal temperature this week brought a smile to most Minnesota citizens after the hotter than normal consecutive months of June and July. Most climate stations have been averaging 2 to 5 degrees F cooler than normal so far this month. Coupled with lower dew points in the 40s and 50s F the air has felt much more comfortable and house windows are typically opened to let in the “fresh air.”

In portions of St Louis and Koochiching Counties up north morning low temperatures have even dipped into the mid to upper 30s F. Many northern Minnesota communities have seen daytime high temperatures remain in the 60s F this week. Grand Marais recorded a high of only 65°F on August 4th.

In terms of rainfall, the first week of August has brought little to most of the state. The exception is west-central Minnesota where thunderstorms on August 1st brought an inch or more of rainfall to many areas. These rains were well-receive…
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July Climate Summary

July Climate Summary:
It was warm and wet for the month of July across most of Minnesota. Statewide July of 2020 was both the 14th warmest and 14th wettest in history back to 1895.

Average monthly temperatures from the state climate network ranged from 1 to 4 degrees F warmer than normal. There were 25 daily high maximum temperature records tied or broken and 38 daily high (warm) minimum temperature records tied or broken with the state climate station network. Extremes for the month ranged from 97°F at a number of locations on the 3rd to just 40° at Brimson (St Louis County) on the 23rd. With extremely high dew points (many days produced a dew point of 70°F or greater) the National Weather Service had to issue Heat Advisories and Excessive Heat Warnings on a number of days as the Heat Index soared to 100 degrees F or greater. Interestingly enough Hallock (Kittson County) in extreme northwestern Minnesota reported one of the highest Heat Index values with 107°F on the 25th.


Dry in Unusual Spots

Dry in Unusual Spots:
Earlier this month I wrote about how normally cold spots in the state, Tower and Gunflint Lake for example, were recording daily high temperatures in the 90s F and setting records. Always looking for the unusual weather situation, I also find that the weather pattern this month so far has produced significant rainfall deficiencies in some spots that are normally among the wettest in the state: Waseca and Faribault.

Currently the July total rainfall at the University of Minnesota Southern Research and Outreach Center at Waseca is only 0.79 inches, while at Faribault (Rice County) it is only 0.66 inches. This is well over 2 inches short of normal. Recall that Waseca has reported over 45 inches of annual precipitation in 4 of the past 5 years, with a record 56.24 inches (2016, then a state record), and Faribault has reported 40 or more inches of annual precipitation in 4 of the last 5 years, including 50.55 inches (a local climate record) just last year. So the…