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Weather extremes

How extreme does Lenexa's weather get?

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

Based on 29 years of daily weather observations (1997–present), from the Olathe Johnson Co Ind Ap station 20 km away. Updated through May 2026 — 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 Lenexa has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
111°F Aug 2, 2011

That is about 23°F hotter than a normal August afternoon in Lenexa (typical high near 88°F).

The three most extreme on record

1 111°F Aug 2, 2011
2 108°F Jul 29, 2012
3 107°F Aug 27, 2000
❄️ Coldest night
-15°F Feb 16, 2021

About 39°F colder than a normal February night in Lenexa (typical low near 24°F).

The three most extreme on record

1 -15°F Feb 16, 2021recent
2 -14°F Feb 3, 2011
3 -11°F Dec 9, 2005
🌧️ Most rain in one day
5.66 in Jul 11, 2006

More rain in a single day than Lenexa usually gets in the whole month of July (typical July total about 4.2 in).

The three most extreme on record

1 5.66 in Jul 11, 2006
2 4.06 in Sep 13, 1998
3 3.84 in Sep 12, 2008

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 111°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Lenexa's record heat sits well above even a hot day for the season — August's 111°F is about 23°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, Lenexa's warmest days reach the high 80s°F and its coldest nights drop to the low 20s°F. But across the record it has gone as high as 111°F and as low as −15°F. A single day has delivered over 6 inches of rain. 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 23 km from the city centre.

How we build these numbers →