American Fork, UT climate
American Fork has chilly winters and warm summers, with very little rain. A typical July afternoon reaches 92°, a January night drops to 20°, and about 26 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in American Fork feels like
Winter
Spring
Summer
Fall
American Fork weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 38° | 20° | 1.8" | 7.4" | 8 | 20° – 37° |
| February | 44° | 24° | 1.5" | 3.6" | 8 | 29° – 41° |
| March | 54° | 32° | 1.5" | 1.8" | 8 | 38° – 49° |
| April | 61° | 37° | 1.9" | 1.3" | 9 | 44° – 56° |
| May | 72° | 45° | 2.0" | 0 | 8 | 52° – 63° |
| June | 83° | 53° | 0.9" | 0 | 3 | 62° – 73° |
| July | 92° | 61° | 0.6" | 0 | 5 | 68° – 80° |
| August | 89° | 59° | 0.8" | 0 | 5 | 70° – 79° |
| September | 79° | 50° | 1.1" | 0 | 6 | 61° – 69° |
| October | 65° | 38° | 1.6" | 0.3" | 6 | 45° – 57° |
| November | 51° | 29° | 1.2" | 3.7" | 6 | 32° – 46° |
| December | 39° | 21° | 1.5" | 8.2" | 8 | 24° – 35° |
| Year | 64° | 39° | 16.5" | 26.3" | 78 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in American Fork
American Fork gets 16 inches of rain and melted snow a year. May is the wettest month and July the driest. Rain or snow falls on about 78 days a year.
About 159 frost-free days a year
In half of years the last 32° night comes by April 30 and the first one by October 9. That leaves about 159 frost-free days for gardens, shorter than 72% of U.S. towns.
Heating and cooling a home in American Fork
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In American Fork, 88% of that work is heating and 12% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
American Fork and its neighbors
American Fork borders 5 towns with climate data. January nights across them vary by 1.6°. Pleasant Grove has both the coldest January nights (20°) and the hottest July afternoons (92°). American Fork’s January low is 20° and its July high 92°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How American Fork compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in American Fork averaged 1.7° warmer than the 1900s. The biggest change is in March (+3.1°). The shift is larger than in 81% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at American Fork’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. January swings the most: between 1991 and 2020 its average temperature ranged from 20° to 37°. September is the most reliable, staying within 8°.
Common questions about American Fork’s climate
What is the coldest month in American Fork?
January, with a typical high of 38° and a low of 20°.
What is the hottest month in American Fork?
July, with a typical high of 92° and a low of 61°. About 50 days a year reach 90°.
How much snow does American Fork get?
About 26 inches in a normal winter, most of it in December.
When is the first frost in American Fork?
In half of years the first 32° night comes by October 9, and the last spring frost by April 30.
What is the rainiest month in American Fork?
May, with 2.0 inches of rain and melted snow. The year totals 16 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for American Fork itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Utah Lake Lehi, UT (6 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.