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Weather extremes

How extreme does Alamosa's weather get?

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

Based on 21 years of daily weather observations (2005–present), from the Alamosa 1E station 1 km away. Updated through January 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 Alamosa has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
94°F Jun 28, 2013

That is about 15°F hotter than a normal June afternoon in Alamosa (typical high near 79°F).

The three most extreme on record

1 94°F Jun 28, 2013
2 93°F Jun 23, 2015
3 93°F Jul 12, 2020
❄️ Coldest night
-34°F Jan 4, 2013

About 34°F colder than a normal January night in Alamosa (typical low near 0°F).

The three most extreme on record

1 -34°F Jan 4, 2013
2 -34°F Jan 13, 2013
3 -33°F Dec 29, 2007
🌧️ Most rain in one day
1.39 in Sep 9, 2020

More rain in a single day than Alamosa usually gets in the whole month of September (typical September total about 0.9 in).

The three most extreme on record

1 1.39 in Sep 9, 2020
2 1.22 in Jul 19, 2007
3 1.07 in Nov 25, 2013
Most snow in one day
13.8 in Sep 9, 2020

The three most extreme on record

1 13.8 in Sep 9, 2020
2 10.7 in Nov 25, 2013
3 9.8 in Feb 23, 2015

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.

-50°-30°-10°10°30°50°70°90°110° all-time high 94°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Alamosa's record heat sits well above even a hot day for the season — June's 94°F is about 15°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, Alamosa's warmest days reach the low 80s°F and its coldest nights drop to the low 0s°F. But across the record it has gone as high as 94°F and as low as −34°F. A single day has delivered over 1 inches of rain or close to 14 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 Alamosa 1E (NOAA GHCN station USC00050128), about 1 km from the city centre.

How we build these numbers →