How extreme does Imperial Beach's weather get?

The hottest, coldest, wettest and snowiest days Imperial Beach 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 Imperial Beach Ream Fld Nas station 2 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 Imperial Beach has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

130°F Dec 8, 2010

That is about 64°F hotter than a normal December afternoon in Imperial Beach (typical high near 66°F).

The three most extreme on record

1 130°F Dec 8, 2010

2 129°F Dec 24, 2010

3 128°F Nov 29, 2010

❄️ Coldest night

-77°F Mar 28, 2018

About 128°F colder than a normal March night in Imperial Beach (typical low near 51°F).

The three most extreme on record

1 -77°F Mar 28, 2018

2 -64°F Mar 29, 2018

3 -1°F Jan 19, 2008

🌧️ Most rain in one day

4.46 in Feb 2, 1988

More rain in a single day than Imperial Beach usually gets in the whole month of February (typical February total about 2.1 in).

The three most extreme on record

1 4.46 in Feb 2, 1988

2 2.88 in Nov 25, 1985

3 2.36 in Feb 6, 1992

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

Imperial Beach's record heat sits well above even a hot day for the season — December's 130°F is about 64°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, Imperial Beach's warmest days reach the mid-70s°F and its coldest nights drop to the mid-40s°F. But across the record it has gone as high as 130°F and as low as −77°F. A single day has delivered over 4 inches of rain. 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 Imperial Beach Ream Fld Nas (NOAA GHCN station USW00093115), about 2 km from the city centre.

How we build these numbers →

← Imperial Beach city detail