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Weather extremes

How extreme does Lee's Summit's weather get?

The hottest, coldest, wettest and snowiest days Lee's Summit has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 35 years of daily weather observations (1990–present), from the Independence station 17 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Lee's Summit has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
107°F Aug 22, 2003

That is about 21°F hotter than a normal August afternoon in Lee's Summit (typical high near 86°F).

The three most extreme on record

1 107°F Aug 22, 2003
2 107°F Aug 3, 2011
3 104°F Aug 18, 2003
❄️ Coldest night
-14°F Jan 30, 2019

About 33°F colder than a normal January night in Lee's Summit (typical low near 19°F).

The three most extreme on record

1 -14°F Jan 30, 2019
2 -13°F Feb 3, 1996
3 -12°F Feb 4, 1996
🌧️ Most rain in one day
6.38 in May 7, 2007

More rain in a single day than Lee's Summit usually gets in the whole month of May (typical May total about 6.0 in).

The three most extreme on record

1 6.38 in May 7, 2007
2 6.33 in Sep 14, 1998
3 5.62 in Jul 26, 1998
Most snow in one day
11.5 in Feb 2, 2011

Close to a whole typical February's snow in one day (Lee's Summit averages about 3 in across the month).

The three most extreme on record

1 11.5 in Feb 2, 2011
2 10.5 in Feb 25, 1993
3 9.8 in Feb 22, 2013

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

-30°-10°10°30°50°70°90°110°130° all-time high 107°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Lee's Summit's record heat sits well above even a hot day for the season — August's 107°F is about 21°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Lee's Summit's warmest days reach the high 80s°F and its coldest nights drop to the high 10s°F. But across the record it has gone as high as 107°F and as low as −14°F. A single day has delivered over 6 inches of rain or close to 12 inches of snow. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Kansas City Dwtn AP (NOAA GHCN station USW00013988), about 30 km from the city centre.

How we build these numbers →