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 19,2014


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

May 1  90/1959  29/1909  2.37/1898 29% 15%  70/50/0.13  6:20/8:11 Tr.1909
May 2  91/1968  31/2005  2.56/1910 38% 21%  70/50/0.13  6:19/8:12 .5 2013
May 3  90/1895  30/1976  2.04/1987 32% 16%  70/51/0.13  6:18/8:13 1.7/1907
May 4  92/1952  27/1907  1.73/1982 36% 25%  71/51/0.14  6:16/8:14 Tr.2013
May 5  96/1952  32/1944  3.51/1904 43% 17%  71/52/0.14  6:15/8:15 
May 6  89/2004  32/1944 *2.78/2007 49% 25%  71/52/0.14  6:14/8:16 
May 7  92/1934  34/1989  2.57/1927 44% 30%  72/52/0.14  6:13/8:17 
May 8  94/1934  35/1984  3.57/1921 31% 17%  72/53/0.14  6:12/8:18 
May 9  91/1963  35/1980  1.55/1981 33% 25%  72/53/0.14  6:11/8:19 
May10  92/1962  37/1989  1.54/1993 37% 30%  73/54/0.14  6:10/8:20 
May11  92/1962  34/1981  2.60/1929 36% 24%  73/54/0.15  6:09/8:21 
May12  93/1962  33/2013  2.50/2010 38% 27%  73/54/0.15  6:08/8:22 
May13  90/1962  36/1997  2.08/1925 34% 19%  74/55/0.15  6:07/8:23 
May14  93/2013* 40/1907  2.30/1909 35% 19%  74/55/0.15  6:06/8:23 
May15  91/1941  34/1907  4.73/1990*36% 24%  74/55/0.15  6:05/8:24 
May16  94/1931  35/2014  2.65/1957 36% 20%  75/56/0.15  6:04/8:25 
May17  91/1996* 37/2014  3.13/1974 44% 30%  75/56/0.16  6:03/8:26 
May18  91/1997  39/1915  3.21/1974 38% 23%  75/56/0.16  6:03/8:27 
May19  96/1998* 39/1894  3.74/2004*34% 25%  76/57/0.16  6:02/8:28 
May20  90/1970  40/1981  2.10/1899 40% 28%  76/57/0.16  6:01/8:29 
May21  97/1956  38/1892  2.25/1891 38% 29%  76/57/0.16  6:00/8:30 
May22  93/1956  41/1963  2.23/1968 39% 26%  77/58/0.16  6:00/8:31 
May23  93/1939  41/1963  2.52/1995 38% 28%  77/58/0.17  5:59/8:31 
May24  97/1939  41/1925  2.63/1902 39% 24%  77/58/0.17  5:58/8:32 
May25  92/1967  39/1925  1.56/1953 36% 25%  78/58/0.17  5:58/8:33 
May26  93/1985* 42/1992  3.35/1996 40% 31%  78/59/0.17  5:57/8:34 
May27  94/2006  38/1992  2.26/2013 41% 30%  78/59/0.17  5:57/8:35 
May28  93/2006  38/1947  1.71/1975 38% 31%  78/59/0.17  5:56/8:35 
May29  98/1934  35/1947  2.12/1904 38% 34%  79/60/0.18  5:56/8:36 
May30 103/1934  42/1984  1.82/1982 38% 29%  79/60/0.18  5:55/8:37 
May31 102/1934  42/1889  2.44/1996 51% 33%  80/60/0.18  5:55/8:38 
Month 103/1934  27/1907 12.75/1995 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.