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Weather extremes

How extreme does Eau Claire's weather get?

The hottest, coldest, wettest and snowiest days Eau Claire 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 Chippewa Valley Rgnl Ap station 6 km away. Updated through June 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 Eau Claire has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
104°F Jul 15, 1988

That is about 21°F hotter than a normal July afternoon in Eau Claire (typical high near 83°F).

The three most extreme on record

1 104°F Jul 15, 1988
2 104°F Aug 1, 1988
3 103°F Aug 16, 1988
❄️ Coldest night
-39°F Jan 9, 1977

About 45°F colder than a normal January night in Eau Claire (typical low near 6°F).

The three most extreme on record

1 -39°F Jan 9, 1977
2 -35°F Feb 2, 1996
3 -33°F Jan 18, 1994
🌧️ Most rain in one day
5.98 in Sep 10, 2000

More rain in a single day than Eau Claire usually gets in the whole month of September (typical September total about 3.7 in).

The three most extreme on record

1 5.98 in Sep 10, 2000
2 4.94 in Sep 21, 2016
3 4.74 in Jun 18, 2011
Most snow in one day
22.0 in Dec 11, 2010

Close to a whole typical December's snow in one day (Eau Claire averages about 11 in across the month).

The three most extreme on record

1 22.0 in Dec 11, 2010
2 13.5 in Mar 19, 2005
3 12.5 in Dec 9, 2012

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°130° all-time high 104°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Eau Claire's record heat sits well above even a hot day for the season — July's 104°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, Eau Claire'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 104°F and as low as −39°F. A single day has delivered over 6 inches of rain or close to 22 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 Chippewa Valley Rgnl AP (NOAA GHCN station USW00014991), about 6 km from the city centre.

How we build these numbers →