Dry conditions and about average temperatures prevailed for May, according to weather researchers at the West Central Research and Outreach Center in Morris. The mean temperature for May was 55.0°F, which is 1.3°F below the average of 56.3°F. The high temperature for the month was 85°F on May 28. The low temperature for the month was 25°F and occurred on May 12. The highest temperature recorded in May at the WCROC from 1886 to 2019 was 106°F on May 31, 1934. The lowest temperature recorded historically was 18°F which occurred on three days, May 2, 1911, May 3, 1926, and May 11, 1946.
Precipitation for the month totaled .83 inches, which is 2.17 inches below the average of 3.00 inches. This May ranks seventh for the least amount of precipitation historically. We accumulated 270 growing degree days in May. The average is 312 for May which leaves us at 42 growing degree days below average.