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Weather extremes

How extreme does Grand Junction's weather get?

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

Based on 15 years of daily weather observations (2011–present), from the Grand Junction Wfo station 7 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 Grand Junction has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
107°F Jul 9, 2021

That is about 12°F hotter than a normal July afternoon in Grand Junction (typical high near 95°F).

The three most extreme on record

1 107°F Jul 9, 2021recent
2 106°F Jul 17, 2023
3 104°F Jun 28, 2013
❄️ Coldest night
-6°F Jan 15, 2013

About 25°F colder than a normal January night in Grand Junction (typical low near 19°F).

The three most extreme on record

1 -6°F Jan 15, 2013
2 -5°F Jan 14, 2013
3 -3°F Jan 5, 2013
🌧️ Most rain in one day
1.38 in Oct 10, 2025

More rain in a single day than Grand Junction usually gets in the whole month of October (typical October total about 1.3 in).

The three most extreme on record

1 1.38 in Oct 10, 2025recent
2 1.24 in Sep 9, 2013
3 1.11 in Oct 22, 2015
Most snow in one day
5.9 in Dec 4, 2013

The three most extreme on record

1 5.9 in Dec 4, 2013
2 5.7 in Dec 25, 2015
3 5.0 in Jan 30, 2014

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.

-30°-10°10°30°50°70°90°110°130° all-time high 107°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Grand Junction's record heat sits well above even a hot day for the season — July's 107°F is about 12°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, Grand Junction's warmest days reach the mid-90s°F and its coldest nights drop to the high 10s°F. But across the record it has gone as high as 107°F and as low as −6°F. A single day has delivered over 1 inches of rain or close to 6 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 Grand Junction Wfo (NOAA GHCN station USC00053486), about 7 km from the city centre.

How we build these numbers →