How extreme does Casa Grande's weather get?

The hottest, coldest, wettest and snowiest days Casa Grande 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 Casa Grande station 4 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 Casa Grande has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

120°F Jul 27, 1995

That is about 13°F hotter than a normal July afternoon in Casa Grande (typical high near 107°F).

The three most extreme on record

1 120°F Jul 27, 1995

2 119°F Jun 26, 1979

3 119°F Jun 27, 1979

❄️ Coldest night

15°F Dec 24, 1974

About 23°F colder than a normal December night in Casa Grande (typical low near 38°F).

The three most extreme on record

1 15°F Dec 24, 1974

2 17°F Jan 15, 2007

3 19°F Jan 5, 1971

🌧️ Most rain in one day

4.60 in Mar 19, 1983

More rain in a single day than Casa Grande usually gets in the whole month of March (typical March total about 0.8 in).

The three most extreme on record

1 4.60 in Mar 19, 1983

2 2.60 in Aug 13, 1971

3 2.39 in Aug 14, 1990

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

Casa Grande's record heat sits well above even a hot day for the season — July's 120°F is about 13°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, Casa Grande's warmest days reach the high 100s°F and its coldest nights drop to the high 30s°F. But across the record it has gone as high as 120°F and as low as 15°F. A single day has delivered over 5 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 Casa Grande (NOAA GHCN station USC00021306), about 4 km from the city centre.

How we build these numbers →

← Casa Grande city detail