How extreme does Lemon Grove's weather get?

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

Based on 47 years of daily weather observations (1979–present), from the El Cajon station 12 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 Lemon Grove has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

114°F Sep 5, 2020

That is about 27°F hotter than a normal September afternoon in Lemon Grove (typical high near 87°F).

The three most extreme on record

1 114°F Sep 5, 2020

2 113°F Jul 22, 2006

3 112°F Jul 6, 2018

❄️ Coldest night

25°F Dec 25, 1987

About 17°F colder than a normal December night in Lemon Grove (typical low near 42°F).

The three most extreme on record

1 25°F Dec 25, 1987

2 26°F Jan 17, 1987

3 26°F Dec 26, 1987

🌧️ Most rain in one day

3.80 in Dec 22, 2010

More rain in a single day than Lemon Grove usually gets in the whole month of December (typical December total about 1.8 in).

The three most extreme on record

1 3.80 in Dec 22, 2010

2 2.75 in Jan 22, 2024

3 2.52 in Feb 21, 1980

⛄ Most snow in one day

0.3 in Nov 29, 1992

Top recorded days

1 0.3 in Nov 29, 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

Lemon Grove's record heat sits well above even a hot day for the season — September's 114°F is about 27°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, Lemon Grove's warmest days reach the high 80s°F and its coldest nights drop to the low 40s°F. But across the record it has gone as high as 114°F and as low as 25°F. A single day has delivered over 4 inches of rain or close to 0 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 Imperial Beach Ream Fld Nas (NOAA GHCN station USW00093115), about 21 km from the city centre.

How we build these numbers →

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