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Weather extremes

How extreme does American Fork's weather get?

The hottest, coldest, wettest and snowiest days American Fork 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 Pleasant Grove station 5 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 American Fork has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
104°F Jul 13, 2005

That is about 11°F hotter than a normal July afternoon in American Fork (typical high near 93°F).

The three most extreme on record

1 104°F Jul 13, 2005
2 104°F Jul 15, 2007
3 103°F Jul 13, 2002
❄️ Coldest night
-17°F Feb 7, 1989

About 45°F colder than a normal February night in American Fork (typical low near 28°F).

The three most extreme on record

1 -17°F Feb 7, 1989
2 -16°F Feb 6, 1989
3 -14°F Jan 6, 1971
🌧️ Most rain in one day
1.80 in May 10, 1985

About 90% of a typical May's rain in a single day (American Fork averages roughly 2.0 in across the month).

The three most extreme on record

1 1.80 in May 10, 1985
2 1.65 in Oct 20, 1979
3 1.60 in May 11, 2005
Most snow in one day
14.0 in Apr 1, 1999

Close to a whole typical April's snow in one day (American Fork averages about 3 in across the month).

The three most extreme on record

1 14.0 in Apr 1, 1999
2 12.0 in Dec 17, 2006
3 11.0 in Dec 20, 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.

-30°-10°10°30°50°70°90°110°130° all-time high 104°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

American Fork's record heat sits well above even a hot day for the season — July's 104°F is about 11°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, American Fork's warmest days reach the low 90s°F and its coldest nights drop to the mid-20s°F. But across the record it has gone as high as 104°F and as low as −17°F. A single day has delivered over 2 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 Pleasant Grove (NOAA GHCN station USC00426919), about 5 km from the city centre.

How we build these numbers →