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Weather extremes

How extreme does Gardiner's weather get?

The hottest, coldest, wettest and snowiest days Gardiner 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 Yellowstone Park Mammoth station 6 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 Gardiner has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
99°F Jul 14, 2002

That is about 18°F hotter than a normal July afternoon in Gardiner (typical high near 81°F).

The three most extreme on record

1 99°F Jul 14, 2002
2 99°F Jul 15, 2002
3 98°F Jul 13, 2002
❄️ Coldest night
-35°F Feb 3, 1989

About 48°F colder than a normal February night in Gardiner (typical low near 13°F).

The three most extreme on record

1 -35°F Feb 3, 1989
2 -35°F Feb 4, 1989
3 -35°F Dec 22, 1990
🌧️ Most rain in one day
2.28 in Jun 13, 2022

More rain in a single day than Gardiner usually gets in the whole month of June (typical June total about 1.9 in).

The three most extreme on record

1 2.28 in Jun 13, 2022recent
2 2.25 in Aug 30, 1982
3 2.10 in Mar 1, 1979
Most snow in one day
18.0 in Mar 1, 1979

Close to a whole typical March's snow in one day (Gardiner averages about 11 in across the month).

The three most extreme on record

1 18.0 in Mar 1, 1979
2 16.0 in Nov 20, 2010
3 12.0 in Oct 23, 1991

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 99°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Gardiner's record heat sits well above even a hot day for the season — July's 99°F is about 18°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, Gardiner's warmest days reach the low 80s°F and its coldest nights drop to the low 10s°F. But across the record it has gone as high as 99°F and as low as −35°F. A single day has delivered over 2 inches of rain or close to 18 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 — 1991–2020 normals computed from 28 years of daily observations at Gardiner, a weather station, inside the city. The underlying daily records come from NOAA's global station network.

How we build these numbers →