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Weather extremes

How extreme does Sierra Vista's weather get?

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

Based on 44 years of daily weather observations (1982–present), from the Sierra Vista station 3 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 Sierra Vista has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
110°F Jun 20, 2017

That is about 16°F hotter than a normal June afternoon in Sierra Vista (typical high near 94°F).

The three most extreme on record

1 110°F Jun 20, 2017
2 108°F Jul 4, 1989
3 108°F Jun 21, 2017
❄️ Coldest night
4°F Feb 3, 2011

About 29°F colder than a normal February night in Sierra Vista (typical low near 33°F).

The three most extreme on record

1 4°F Feb 3, 2011
2 4°F Feb 4, 2011
3 5°F Feb 5, 2011
🌧️ Most rain in one day
2.84 in Aug 23, 1992

About 86% of a typical August's rain in a single day (Sierra Vista averages roughly 3.3 in across the month).

The three most extreme on record

1 2.84 in Aug 23, 1992
2 2.25 in Sep 9, 2014
3 2.12 in Oct 4, 1989
Most snow in one day
4.0 in Jan 7, 1997

Close to a whole typical January's snow in one day (Sierra Vista averages about 0 in across the month).

The three most extreme on record

1 4.0 in Jan 7, 1997
2 4.0 in Dec 30, 2018
3 3.5 in Feb 5, 1985

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°10°30°50°70°90°110°130° all-time high 110°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Sierra Vista's record heat sits well above even a hot day for the season — June's 110°F is about 16°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, Sierra Vista's warmest days reach the mid-90s°F and its coldest nights drop to the low 30s°F. But across the record it has gone as high as 110°F and as low as 4°F. A single day has delivered over 3 inches of rain or close to 4 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 Sierra Vista (NOAA GHCN station USC00027880), about 3 km from the city centre.

How we build these numbers →