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Above average temperatures in September, record tied for high temperature

The mean temperature for September was 60.6°F, which is 1.5°F above the average of 59.1°F (1886-2017).  The high temperature for the month was 94°F on September 16th.  The low temperature for the month was 29°F on September 30th.  We consider a killing frost to be 28°F.  Therefore we did not have a killing frost in September.  

The highest temperature recorded in September at the WCROC from 1886 to 2017 was 106°F on September 10, 1910.  The lowest temperature recorded historically was 20°F which occurred on September 20, 1974, September 30, 1939, and September 29, 1897.  On September 17th the record high was tied, which was originally set in 1891 at 92° F.  

Recent record highs are unique in September at this location.  Prior to this year the last record high was set in 1984.  There are three record highs set in the 1970's and the rest were set before 1956.  

Precipitation for the month totaled 1.84 inches, which is .5 inches below the average of 2.34 inches.  Precipitation this year has totaled 25.02 inches which is 4.15 inches above the average of 20.87 for this time.  366 growing degree days were recorded for September, while the average is 357 (1976-2017).  

We have accumulated 2596 growing degree days for May, June, July, August and September.  Average for this time is 2351.  

20.51 inches of evaporation were recorded this year for the evaporation pan.  Last year we recorded 19.89.