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Weather extremes

How extreme does Chaska's weather get?

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

Based on 30 years of daily weather observations (1996–present), from the Chanhassen Wsfo station 7 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 Chaska has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
100°F Jun 7, 2011

That is about 23°F hotter than a normal June afternoon in Chaska (typical high near 77°F).

The three most extreme on record

1 100°F Jun 7, 2011
2 99°F Jul 6, 2012
3 99°F May 28, 2018
❄️ Coldest night
-35°F Feb 2, 1996

About 44°F colder than a normal February night in Chaska (typical low near 9°F).

The three most extreme on record

1 -35°F Feb 2, 1996
2 -31°F Feb 1, 1996
3 -31°F Jan 31, 2019
🌧️ Most rain in one day
5.53 in Sep 4, 2005

More rain in a single day than Chaska usually gets in the whole month of September (typical September total about 3.3 in).

The three most extreme on record

1 5.53 in Sep 4, 2005
2 4.98 in Jun 19, 2014
3 4.87 in Aug 8, 2009
Most snow in one day
13.6 in Dec 9, 2012

Close to a whole typical December's snow in one day (Chaska averages about 13 in across the month).

The three most extreme on record

1 13.6 in Dec 9, 2012
2 12.2 in Jan 13, 2000
3 12.0 in Mar 2, 2007

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.

-50°-30°-10°10°30°50°70°90°110° all-time high 100°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Chaska's record heat sits well above even a hot day for the season — June's 100°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, Chaska's warmest days reach the low 80s°F and its coldest nights drop to the mid-0s°F. But across the record it has gone as high as 100°F and as low as −35°F. A single day has delivered over 6 inches of rain or close to 14 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 Minneapolis Flying Cloud AP (NOAA GHCN station USW00094963), about 11 km from the city centre.

How we build these numbers →