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
94°F
Patchy Smoke
Patchy smoke. Sunny, with a high near 94. West northwest wind 3 to 12 mph.
7-day forecast for American Fork
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Patchy Smoke | 3 to 12 mph WNW | 0% |
| Tonight | 61°F | Patchy Smoke | 1 to 12 mph NNE | 0% |
| Wednesday | 95°F | Patchy Smoke | 2 to 9 mph WNW | 0% |
| Wednesday Night | 64°F | Patchy Smoke then Mostly Clear | 2 to 10 mph NE | 0% |
| Thursday | 100°F | Sunny | 2 to 7 mph S | 0% |
| Thursday Night | 68°F | Mostly Clear | 3 to 9 mph NE | 0% |
| Friday | 102°F | Sunny | 6 mph S | 0% |
| Friday Night | 71°F | Mostly Clear | 3 to 9 mph NNE | 0% |
| Saturday | 102°F | Sunny | 6 mph S | 0% |
| Saturday Night | 73°F | Mostly Clear | 7 mph NE | 1% |
| Sunday | 101°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 mph S | 15% |
| Sunday Night | 72°F | Partly Cloudy | 6 mph E | 8% |
| Monday | 99°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 7 mph S | 15% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 6 mph E | 17% |
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 Aug 4, 2026.