Summary of 47 months of August that I have recorded:
Highest recorded temp.- 106° on Aug. 17, 1976 and 106° on Aug. 15, 1988
Lowest recorded temp.- 35° on Aug. 27, 1982
Current average high temp.- 82°
Current average low temp.- 57°
Number of 100° or plus days- 17
Number of 90° or plus days- 236
Hottest August on record- August, 1983 Average high temp. of 91°
Coolest August on record- August, 1992 Average low temp. of 75°
Most precip. in a month’s time- 6.28 August, 2014
Most precip in a day’s time- 3.39 on Aug. 23, 2014
Least precip. in a month’s time- .19 during August, 1996
Most number of days of recorded precip.- 9 during Aug., 1980
September introduction
The average high temperature for September is currently 72° and low 46°. The average precip. drops off to 2.07 and thunder is still possible. There is still a chance for some very warm day-time temps. but it decreases as the month wears on. By the end of the month the chance for frost and actual killing frost becomes a very big possibility. Night time readings become very cool. All in all, September is a very pleasant month in S. D. as summer moves into fall. 100° days are still possible but none since 1983. 90° days also drops off to only 90 in 47 years. September in S. D. is like what is called a Mediterranean climate that is enjoyed in southern Europe most year around.
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