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Weather extremes

How extreme does Wasco's weather get?

The hottest, coldest, wettest and snowiest days Wasco 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 Wasco station 1 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 Wasco has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
115°F Jul 22, 2006

That is about 15°F hotter than a normal July afternoon in Wasco (typical high near 100°F).

The three most extreme on record

1 115°F Jul 22, 2006
2 115°F Jul 26, 2006
3 114°F Jul 16, 1972
❄️ Coldest night
14°F Dec 23, 1990

About 24°F colder than a normal December night in Wasco (typical low near 38°F).

The three most extreme on record

1 14°F Dec 23, 1990
2 15°F Dec 24, 1990
3 15°F Dec 25, 1990
🌧️ Most rain in one day
2.89 in Mar 31, 1982

More rain in a single day than Wasco usually gets in the whole month of March (typical March total about 1.4 in).

The three most extreme on record

1 2.89 in Mar 31, 1982
2 2.59 in Dec 19, 2010
3 2.53 in Feb 10, 1978
Most snow in one day
3.0 in Jan 25, 1999

Close to a whole typical January's snow in one day (Wasco averages about 0 in across the month).

Top recorded days

1 3.0 in Jan 25, 1999

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 115°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Wasco's record heat sits well above even a hot day for the season — July's 115°F is about 15°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, Wasco's warmest days reach the low 100s°F and its coldest nights drop to the high 30s°F. But across the record it has gone as high as 115°F and as low as 14°F. A single day has delivered over 3 inches of rain or close to 3 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 Wasco (NOAA GHCN station USC00049452), about 1 km from the city centre.

How we build these numbers →