How extreme does Barstow Heights's weather get?

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

Based on 46 years of daily weather observations (1980–present), from the Barstow station 4 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 Barstow Heights has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

120°F Jul 23, 1996

That is about 18°F hotter than a normal July afternoon in Barstow Heights (typical high near 102°F).

The three most extreme on record

1 120°F Jul 23, 1996

2 115°F Jul 28, 1995

3 115°F Jul 11, 2021

❄️ Coldest night

8°F Dec 22, 1990

About 27°F colder than a normal December night in Barstow Heights (typical low near 35°F).

The three most extreme on record

1 8°F Dec 22, 1990

2 12°F Jan 14, 2007

3 13°F Dec 23, 1990

🌧️ Most rain in one day

2.25 in Sep 3, 1997

More rain in a single day than Barstow Heights usually gets in the whole month of September (typical September total about 0.3 in).

The three most extreme on record

1 2.25 in Sep 3, 1997

2 1.82 in Dec 22, 2010

3 1.60 in Dec 21, 2010

⛄ Most snow in one day

6.5 in Dec 17, 2008

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

The three most extreme on record

1 6.5 in Dec 17, 2008

2 1.5 in Dec 15, 2008

3 0.5 in Mar 8, 2013

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.

normal range of daily temperatureshottest ever recordedcoldest ever recorded

Barstow Heights's record heat sits well above even a hot day for the season — July's 120°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, Barstow Heights's warmest days reach the low 100s°F and its coldest nights drop to the mid-30s°F. But across the record it has gone as high as 120°F and as low as 8°F. A single day has delivered over 2 inches of rain or close to 7 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 Barstow (NOAA GHCN station USC00040521), about 4 km from the city centre.

How we build these numbers →

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