American Fork, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for American Fork, a city in Utah County, Utah.
Today
72°F
Isolated Showers And Thunderstorms
Isolated showers and thunderstorms before 3pm. Mostly sunny, with a high near 72. West northwest wind 3 to 7 mph. Chance of precipitation is 20%.
7-day forecast for American Fork
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Isolated Showers And Thunderstorms | 3 to 7 mph WNW | 23% |
| Tonight | 48°F | Mostly Clear | 1 to 7 mph NNE | 3% |
| Sunday | 74°F | Sunny | 3 mph SW | 0% |
| Sunday Night | 48°F | Partly Cloudy | 3 mph NE | 0% |
| Monday | 80°F | Mostly Sunny | 2 mph SSE | 0% |
| Monday Night | 54°F | Mostly Cloudy | 3 mph NE | 8% |
| Tuesday | 77°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 3 mph SSE | 44% |
| Tuesday Night | 51°F | Chance Showers And Thunderstorms then Mostly Cloudy | 3 mph ESE | 33% |
| Wednesday | 80°F | Sunny | 3 mph SSE | 10% |
| Wednesday Night | 53°F | Mostly Clear | 3 mph ESE | 2% |
| Thursday | 83°F | Sunny | 5 mph SE | 1% |
| Thursday Night | 55°F | Partly Cloudy | 1 to 6 mph ESE | 1% |
| Friday | 83°F | Mostly Sunny | 5 mph SE | 7% |
| Friday Night | 56°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph SE | 16% |
Forecast source: National Weather Service (api.weather.gov) for American Fork (40.378, -111.795). Updated through the day.
Growing snapshot for American Fork
Last spring frost
Apr 17
First fall frost
Oct 25
Growing season
188 days
Hardiness zone
7a
More local growing data for American Fork: nearby ZIP 84042 weather · frost dates · planting calendar · Utah frost dates
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Climate data from the nearest NOAA station, Pleasant Grove, Ut (1.9 mi from American Fork). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.