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Showing posts from November, 2017

Lack of sunshine in November

Lack of sunshine in November:
Many citizens around the state have remarked about the lack of sunshine so far this month. Indeed the data show emphatically the absence of sun has been quite pronounced. Mean cloudiness for the first half of the month ranges from 7 tenths to 8 tenths of the sky across most of the state and some climate stations have reported 9 days of complete cloud cover, while others have reported 8 days with fog.

If we examine historical climate statistics, November is traditionally the cloudiest month of the year, averaging nearly 6 tenths cloud cover of the sky on a daily basis. This is fully 25 to 35 percent more cloud cover than any other month. In terms of actual solar radiation (both direct and diffuse) the amount reaching the Minnesota landscape during November is approximately half of what it is in the month of July, and when compared with to the month with the next least amount of solar radiation (December) it is still about 8 percent less (a result of t…

Coldest temperatures since March

Coldest temperatures since March:
At least 35 Minnesota climate stations reported subzero low temperatures this week, the first time that has happened since the second week of last March. Celina (St Louis County) reported a low temperature of -17°F on November 10th, a new all-time state record low for this date. In addition a number of northern Minnesota communities reported new record lows on November 10th as well, including -16°F at Orr (St Louis County), -15°F at Bigfork (Itasca County County), -14°F at Embarrass, and -13°F Cotton, and Brimson. So far average November temperatures around the state are running 6 to 12 degrees F colder than normal, with several new record low temperatures reported on both November 8th and November 10th. On a statewide basis the first ten days of November have been the coldest since 1995.


A distinct change in the temperature pattern for the month is coming next week, as temperatures are expected to rise to above normal values over Tuesday throu…

October Climate Summary

October Climate Summary:
Despite the snow and cold that prevailed during the last days of the month, average October temperatures around the state generally ranged from 1 to 4 degrees F above normal (average). The extremes for the month were 81 degrees F on October 20th at several locations, and just 13 degrees F at Browns Valley (Traverse County) on October 29th. October was the 8th month of the year with above normal temperatures (only May and August have been cooler than normal this year). Minnesota did not report the nation's lowest temperature even once during the month. Within the statewide climate network 20 locations reported new daily high temperature records on at least one date; while 32 locations reported new daily warm low temperature records on at least one date.

On a statewide basis October of 2017 was the 15th wettest in state history, with most observers reporting from 3 to 5 inches of precipitation. Several southern Minnesota climate stations reported their…