Normals, Means and Extremes for May

Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

...Climate Normals...Means And Extremes For May... ...Jackson Kentucky (JKL)... Temperature Data... Average Maximum........... 74.6 Average Minimum........... 54.7 Average Monthly........... 64.6 Highest................... 91 on the 31st in 2006 Lowest.................... 30 on the 9th in 2020 Low Maximum.............. 47 on the 17th in 2011 High Minimum.............. 73 on the 12th in 2000 Normal Days with High 90 or above..... 0.0 Normal Days with High 32 or below..... 0.0 Normal Days with Low 32 or below..... 0.0 Normal Days with Low 0 or below..... 0.0 Degree Days (Base 65)..... Heating Cooling Monthly Average........... 101 90 Greatest Monthly.......... 199 in 1989 213 in 1991 Least Monthly............. 6 in 1982 22 in 1983 Precipitation Data... Monthly Average........... 5.20 inches Wettest................... 10.78 inches in 2004 Driest.................... 1.74 inches in 2015 Greatest 24 Hour.......... 4.09 inches on the 30th-31st in 2004 Average Days of Thunder... 7.5 Average Days of Dense Fog. 6.1 Average Snowfall.......... 0.0 inches Greatest Snowfall......... 1.0 inches in 1989 Greatest 24 Hour Snowfall. 1.0 inches on the 7th in 1989 Greatest Snow Depth....... Trace in 1989 ...London Kentucky (LOZ)... Temperature Data... Average Maximum........... 76.3 Average Minimum........... 53.3 Average Monthly........... 64.8 Highest................... 91 on the 30th in 2006 Lowest.................... 28 on the 2nd in 1963 Low Maximum............... 48 on the 11th in 1960/17th in 2011 High Minimum.............. 72 on the 12th in 2000 Normal Days with High 90 or above..... 0.1 Normal Days with High 32 or below..... 0.0 Normal Days with Low 32 or below..... 0.2 Normal Days with Low 0 or below..... 0.0 Degree Days (Base 65)..... Heating Cooling Monthly Average........... 95 88 Greatest Monthly.......... 193 in 1961 214 in 1991 Least Monthly............. 23 in 1962 21 in 1972 & 1976 Precipitation Data... Monthly Average........... 5.18 inches Wettest................... 10.97 inches in 1984 Driest.................... 1.09 inches in 1977 Greatest Daily Rain....... 4.08 inches on the 7th in 1984 Average Snowfall.......... 0.0 inches Greatest Snowfall......... 0.0 inches Greatest Daily Snowfall... 0 inches ***Snowfall records for London were kept between 1954 and 1996*** The latest climate outlook for May indicates that eastern Kentucky will be in a weather pattern more conducive to near normal temperatures and above normal precipitation. For more information on climate outlooks try this internet address: http://www.cpc.ncep.noaa.gov Climate weather records at the Julian Carroll Airport near Jackson Kentucky (JKL) date back to January 1st 1981. Climate weather records at the London-Corbin Magee Field Airport (LOZ) date back to November 11th 1954. $$