Climate-Zone.com

HomeCitiesUnited StatesCaliforniaConcordTools › Weather extremes

Weather extremes

How extreme does Concord's weather get?

The hottest, coldest, wettest and snowiest days Concord 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 Berkeley station 23 km away. Updated through August 2025 — 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 Concord has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
107°F Jun 15, 2000

That is about 33°F hotter than a normal June afternoon in Concord (typical high near 74°F).

The three most extreme on record

1 107°F Jun 15, 2000
2 106°F Sep 5, 2022
3 105°F Sep 2, 2017
❄️ Coldest night
24°F Dec 22, 1990

About 19°F colder than a normal December night in Concord (typical low near 43°F).

The three most extreme on record

1 24°F Dec 22, 1990
2 25°F Dec 9, 1972
3 27°F Dec 21, 1998
🌧️ Most rain in one day
6.98 in Jan 4, 1982

More rain in a single day than Concord usually gets in the whole month of January (typical January total about 4.8 in).

The three most extreme on record

1 6.98 in Jan 4, 1982
2 4.73 in Dec 13, 2002
3 4.10 in Dec 11, 2014
Most snow in one day
1.0 in Feb 5, 1976

The three most extreme on record

1 1.0 in Feb 5, 1976
2 0.1 in Dec 12, 1972
3 0.1 in Jan 3, 1974

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°30°50°70°90°110°130° all-time high 107°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Concord's record heat sits well above even a hot day for the season — June's 107°F is about 33°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, Concord's warmest days reach the mid-70s°F and its coldest nights drop to the low 40s°F. But across the record it has gone as high as 107°F and as low as 24°F. A single day has delivered over 7 inches of rain or close to 1 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 Berkeley (NOAA GHCN station USC00040693), about 23 km from the city centre.

How we build these numbers →