Hurricanes and Tornadoes That Hit Harrisonville, MO

The nearest NOAA station with 1991–2020 climate normals is Pleasant Hill WFO, MO, 12 miles north of Harrisonville at 1,000 feet. July is the warmest, with an average high of 88°F and low of 69°F; January is the coolest, at 39°F and 21°F. May is the wettest at 5.8 inches of precipitation on average and January the driest at 1.4 inches; the year adds up to 42.7 inches over 64 days with at least a tenth of an inch. Highs reach 90°F on about 37 days a year, almost all from June to September. Lows fall below freezing on about 106 nights a year. Snowfall averages 16.8 inches a year, most of it in December. That 42.7 inches is more than at 50 of the 134 Missouri stations used on this site (37%). Cleveland, 13 miles west, has its own station (Olathe Johnson Co Exec Airport, KS): 37.8 inches a year, 4.9 less than here, and the same July average high, 88°F.

Since 1996, the National Weather Service has logged 92 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Harrisonville: 65 thunderstorm wind reports, 21 flash floods and 6 floods. None is recorded as killing or injuring anyone; the NWS estimated $201,000 in property and crop damage. The strongest thunderstorm gust on record here was 81 mph, on June 8, 2005. Of the 334 Missouri cities on this site with a flash flood on record, 175 have had fewer than Harrisonville.

Flood insurance policyholders in Harrisonville's ZIP code 64701 have filed 39 claims with the National Flood Insurance Program since 1982, and were paid $1.3 million for buildings and contents, in the dollars of each year. The year with the most claims was 2017, with 20. 13% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 172 Missouri cities on this site with 10 or more claims, 64 have fewer than Harrisonville.