MAY RECORD HIGHS/LOWS/PRECIPITATION/SNOWFALL/NORMALS SUNRISE/SUNSET/NOTABLE WEATHER EVENTS

Based on official USWB/NWS data. Downtown Airport records since 1972 are noted with an asterisk. POMP is the Probability Of Measurable Precipitation for the day....TPoP is the probability of audible thunder for the day.....POMS is the Probability Of Measurable Snowfall for the day, all based on the 1888 to 1996 period. The normals are for KCI. The sunrise/sunset times were computed by the U.S. Naval Observatory program and vary slightly from year to year. Originally compiled by Allen Pearson. Updated May 31, 2019


       Max/Year Min/Year Max Pcpn  POMPTPop Normals     Sun Up/Dn Snow

May 1 90/1959 29/1909 2.37/1898 29% 15% 70/50/0.16 6:20/8:11 Tr.1909
May 2 91/1968 31/2005 2.56/1910 38% 21% 71/50/0.17 6:19/8:12 .5 2013
May 3 90/1895 30/1976 2.04/1987 32% 16% 71/50/0.17 6:18/8:13 1.7/1907
May 4 92/1952 27/1907 1.73/1982 36% 25% 71/51/0.17 6:16/8:14 Tr.2013
May 5 96/1952 32/1944 3.51/1904 43% 17% 72/51/0.17 6:15/8:15
May 6 89/2004 32/1944 *2.78/2007 49% 25% 72/51/0.16 6:14/8:16
May 7 92/1934 34/1989 2.57/1927 44% 30% 72/52/0.17 6:13/8:17
May 8 94/1934 35/1984 3.57/1921 31% 17% 73/52/0.16 6:12/8:18
May 9 91/1963 35/1980 1.55/1981 33% 25% 73/52/0.17 6:11/8:19
May10 92/1962 36/2019 1.54/1993 37% 30% 73/52/0.17 6:10/8:20
May11 92/1962 34/1981 2.60/1929 36% 24% 73/53/0.17 6:09/8:21
May12 93/1962 33/2013 2.50/2010 38% 27% 74/53/0.17 6:08/8:22
May13 92/2018* 36/1997 2.08/1925 34% 19% 74/53/0.17 6:07/8:23
May14 93/2013* 40/1907 2.30/1909 35% 19% 74/54/0.17 6:06/8:23
May15 91/1941 34/1907 4.73/1990*36% 24% 75/54/0.16 6:05/8:24
May16 94/1931 35/2014 2.65/1957 36% 20% 75/54/0.17 6:04/8:25
May17 91/1996* 37/2014 3.13/1974 44% 30% 75/55/0.18 6:03/8:26
May18 91/1997 39/1915 3.21/1974 38% 23% 75/55/0.17 6:03/8:27
May19 96/1998* 39/1894 3.74/2004*34% 25% 76/55/0.17 6:02/8:28
May20 90/1970 40/1981 2.10/1899 40% 28% 76/55/0.18 6:01/8:29
May21 97/1956 38/1892 2.25/1891 38% 29% 76/56/0.17 6:00/8:30
May22 93/1956 41/1963 2.23/1968 39% 26% 77/56/0.17 6:00/8:31
May23 93/1939 41/1963 2.65/2016*38% 28% 77/56/0.17 5:59/8:31
May24 97/1939 41/1925 2.63/1902 39% 24% 77/57/0.17 5:58/8:32
May25 92/1967 39/1925 1.56/1953 36% 25% 77/57/0.17 5:58/8:33
May26 94/2018* 42/1992 3.87/2016 40% 31% 78/57/0.17 5:57/8:34
May27 95/2018* 38/1992 2.26/2013 41% 30% 78/58/0.17 5:57/8:35
May28 96/2018* 38/1947 1.71/1975 38% 31% 78/58/0.17 5:56/8:35
May29 98/1934 35/1947 2.12/1904 38% 34% 79/58/0.16 5:56/8:36
May30 103/1934 42/1984 1.82/1982 38% 29% 79/59/0.17 5:55/8:37
May31 102/1934 42/1889 2.44/1996 51% 33% 79/59/0.17 5:55/8:38
Month 103/1934 27/1907 12.82/2019 38% 25% 75/55/5.04

Max/Year Min/Year Max Pcpn POMPTPop Normals Sun Up/Dn Snow
Month Month

The sunrise/sunset times were computed for 39 degrees 3 minutes North
and 94 degrees 33 minutes West.

                         NOTABLE WEATHER EVENTS

Heaviest snowfall
(1.7" May 3 1907)
Wettest Mays (12.75" 1995) (11.00" 1915) (10.92" 1910) (10.30" 1996)
Dryest Mays (0.70" 1914) (0.75" 1901) (1.05" 1992) (1.10" 1911)
(1.24" 1897) (1.29" 1994) (1.53" 1926) (1.68" 1906) (1.72" 1948)
Most Thunderstorm Days
(16 1977) (16 1903) (15 1892) (13 1898) (12/1982/1996)
Fewest Thunderstorm Days (2 1992) (3 1994) (4 1897) (4 1914) (4 1939)
(4 1960) (4 1976) (4 1984)
.......................................................................

May 3 1907 Kansas City received 1.7 inches of snow. This is still the
latest measurable snow of record (since 1889) and the only recorded
snowfall in the month of May.
May 4 1907 The temperature dropped to 27 degrees following the previous
day's snow. This is the record low for the month.
May 4 1977 A tornado touched down near Drexel MO at 12:40 PM and then
struck Pleasant Hill, killing two persons. More than 1000 homes and mobile
homes were damaged or destroyed. Other tornadoes touched down near Excelsior
Springs, Sedalia, Missouri City and southern Overland Park. The Excelsior
Springs tornado and a 50 mile path length tornado which passed just to the
north of Carrollton were classified as F4 on the Fujita-Pearson scale.
May 4, 2003 Tornadoes struck the metro area producing F-2 to F-4 damage in Leavenworth,
Wyandotte,Platte, and Clay counties. The tornado reached 400 yards wide at time.
..starting in Leavenworth county near Linwood...passing near Bonner Springs, Kansas Speedway,
The Woodlands, hitting Northmoor, and Gladstone very hard, then continuing to Liberty
and into Ray county, North of Richmond before dissipating.
May 5-6 1944 The minimum temperature was 32 degrees both mornings...the
latest days for possible light freezes.
May 6 1993 Heavy downpours caused localized flooding throughout the area.
May 11 1886 A storm, thought at the time to be a "cyclone" struck Lathrop
elementary school in downtown Kansas City, killing fifteen students out of
the 28 persons who lost their lives.
May 13 1886 Two tornadoes moved from Kansas into Missouri. The first and
strongest moved from rural Johnson county into Wyandotte county and crossed
the Kansas river near Muncie into the Quindara district of KCKS. The second
hit the Argentine area and crossed into Missouri hitting 13th and Cherry.
May 14 1990 The 4.73 inches of rain at the Downtown Airport is the
record for the month of May and came with a storm system that produced
considerable flooding along Indian Creek and the Little Blue. Unofficial
amounts of up to 9 inches were reported.
May 19 2004 Heavy rains that began on the evening of the 18th...moved out of the metro area
by 8 am...leaving anywhere from 1" to 8" of rainfall across Kansa City, with the heaviest
concentrated in Northwest Cass County...near Peculiar. Lake Annette, in Cass County,
experienced major flooding, with 14 persons evacuated from their flooded homes.
May 20 1957 A major tornado, rated F4-4-4 on the Fujita-Pearson scale,
struck the southeastern suburbs of Ruskin Heights, Hickman Mills and
Martin City during the early evening hours. The tornado killed 44 persons
and left hundreds homeless.
May 27 1996 A strong microburst hit the Raintree Lakes area of Lee's Summit
in Jackson County, with peak winds estimated at 120 mph. Damage totals were
estimated to be 10 million dollars. There were 9 injuries but no fatalities. The microburst
hit the area around 9:45 PM CDT.
May 29 1947 The low temperature was a frost-threatening 35 degrees.
This is the only temperature below 37 degrees after May 15th.
May 30 1934 Kansas City had not had a triple digit day in May until the
afternoon reading on this Memorial Day. It still is the earliest 100
degree day of record and the high for the month of May.
May 30 1879 The earliest tornado of record to hit near present day Lee's
Summit and Raymore. Four persons were killed in the little village of
Blue Springs MO.