View of cooling street trees in my neighborhood September 12th 2011

Monday was the peak of a string of very warm days across Southeastern Minnesota. Everyday the past week/weekend has brought us sunshine and increasingly warm conditions. by Thursday of last week it was already reaching the mid 80s at my location, from then, each day built up in heat until Monday when highs topped out in the upper 80s to low 90s. The difference with this airmass is there was really hardly any humidity to deal with so it was bearable in the shade. Temperatures in the 90s certainly not record breakers for southeastern Minnesota in September either, but it is fairly unusual. Skies leading up to Monday were very sunny, with no precip to be seen. Which is continuing the very dry condtions across the area.

Highs Monday.

The warmest reading area wide was from Red Wing and Lake City both with highs of 91.F The lowest readings were from the Rochester Airport and Kenyon with a high of 87.F both areas. For the Rochester Metro, the warmest high was at several inner city stations including mine, with a high of 90.F and the lowest reading was from Hallmark Terrace, which is a outlying residential area north of the city.