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Weather extremes

How extreme does Atwater's weather get?

The hottest, coldest, wettest and snowiest days Atwater 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 Turlock #2 station 27 km away. Updated through April 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 Atwater has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
111°F Jul 23, 2006

That is about 18°F hotter than a normal July afternoon in Atwater (typical high near 93°F).

The three most extreme on record

1 111°F Jul 23, 2006
2 111°F Jul 24, 2006
3 109°F Jul 22, 2006
❄️ Coldest night
4°F Dec 22, 1996

About 38°F colder than a normal December night in Atwater (typical low near 42°F).

The three most extreme on record

1 4°F Dec 22, 1996
2 19°F Dec 22, 1990
3 19°F Dec 23, 1990
🌧️ Most rain in one day
2.03 in Mar 22, 1995

More rain in a single day than Atwater usually gets in the whole month of March (typical March total about 1.9 in).

The three most extreme on record

1 2.03 in Mar 22, 1995
2 2.02 in Dec 11, 2014
3 2.00 in Mar 5, 1987
Most snow in one day
2.0 in Feb 6, 1976

Top recorded days

1 2.0 in Feb 6, 1976

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.

-10°10°30°50°70°90°110°130° all-time high 111°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Atwater's record heat sits well above even a hot day for the season — July's 111°F is about 18°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, Atwater's warmest days reach the low 90s°F and its coldest nights drop to the low 40s°F. But across the record it has gone as high as 111°F and as low as 4°F. A single day has delivered over 2 inches of rain or close to 2 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 Turlock #2 (NOAA GHCN station USC00049073), about 27 km from the city centre.

How we build these numbers →