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Weather extremes

How extreme does Leavenworth's weather get?

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

Based on 50+ years of daily weather observations (1971–present), from the Kansas City Dwtn Ap station 35 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 Leavenworth has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
110°F Aug 29, 1984

That is about 21°F hotter than a normal August afternoon in Leavenworth (typical high near 89°F).

The three most extreme on record

1 110°F Aug 29, 1984
2 109°F Jul 1, 1980
3 109°F Jul 9, 1980
❄️ Coldest night
-20°F Jan 16, 1982

About 42°F colder than a normal January night in Leavenworth (typical low near 22°F).

The three most extreme on record

1 -20°F Jan 16, 1982
2 -19°F Dec 22, 1989
3 -16°F Dec 23, 1989
🌧️ Most rain in one day
6.45 in Jul 26, 1998

More rain in a single day than Leavenworth usually gets in the whole month of July (typical July total about 4.4 in).

The three most extreme on record

1 6.45 in Jul 26, 1998
2 5.60 in Aug 31, 2003
3 5.25 in Jun 20, 2000
Most snow in one day
10.0 in Jan 13, 1979

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

The three most extreme on record

1 10.0 in Jan 13, 1979
2 10.0 in Feb 1, 2011
3 9.0 in Jan 9, 1985

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 110°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Leavenworth's record heat sits well above even a hot day for the season — August's 110°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, Leavenworth's warmest days reach the low 90s°F and its coldest nights drop to the low 20s°F. But across the record it has gone as high as 110°F and as low as −20°F. A single day has delivered over 6 inches of rain or close to 10 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 Intl AP (NOAA GHCN station USW00003947), about 17 km from the city centre.

How we build these numbers →