How extreme does Daly City's weather get?

The hottest, coldest, wettest and snowiest days Daly City 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 San Francisco Dwtn station 8 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 Daly City has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

106°F Sep 1, 2017

That is about 36°F hotter than a normal September afternoon in Daly City (typical high near 70°F).

The three most extreme on record

1 106°F Sep 1, 2017

2 103°F Jul 17, 1988

3 103°F Jun 14, 2000

❄️ Coldest night

28°F Dec 22, 1990

About 19°F colder than a normal December night in Daly City (typical low near 47°F).

The three most extreme on record

1 28°F Dec 22, 1990

2 30°F Dec 9, 1972

3 30°F Dec 21, 1990

🌧️ Most rain in one day

5.54 in Nov 5, 1994

More rain in a single day than Daly City usually gets in the whole month of November (typical November total about 2.6 in).

The three most extreme on record

1 5.54 in Nov 5, 1994

2 5.46 in Dec 31, 2022

3 4.02 in Oct 24, 2021

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

Daly City's record heat sits well above even a hot day for the season — September's 106°F is about 36°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, Daly City's warmest days reach the low 70s°F and its coldest nights drop to the high 40s°F. But across the record it has gone as high as 106°F and as low as 28°F. A single day has delivered over 6 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 San Francisco Dwtn (NOAA GHCN station USW00023272), about 8 km from the city centre.

How we build these numbers →

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