Monticello, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monticello, a city in San Juan County, Utah.
This Afternoon
46°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 46. West wind 5 to 10 mph. Chance of precipitation is 30%.
7-day forecast for Monticello
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 46°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 26% |
| Tonight | 34°F | Partly Cloudy | 5 to 10 mph NW | 14% |
| Thursday | 48°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Thursday Night | 35°F | Mostly Cloudy | 0 to 5 mph WSW | 0% |
| Friday | 48°F | Mostly Sunny | 5 mph NNW | 6% |
| Friday Night | 34°F | Mostly Clear | 10 mph NNW | 0% |
| Saturday | 51°F | Sunny | 5 to 10 mph NNW | 0% |
| Saturday Night | 35°F | Mostly Clear | 0 to 5 mph N | 0% |
| Sunday | 53°F | Sunny | 0 to 5 mph SE | 0% |
| Sunday Night | 37°F | Mostly Clear | 0 mph | 0% |
| Monday | 53°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Monday Night | 37°F | Partly Cloudy | 0 mph | 0% |
| Tuesday | 53°F | Mostly Sunny | 0 to 5 mph SSW | 2% |
| Tuesday Night | 37°F | Partly Cloudy | 0 to 5 mph NNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Monticello (37.869, -109.336). Updated through the day.
Growing snapshot for Monticello
Last spring frost
May 19
First fall frost
Oct 2
Growing season
133 days
Hardiness zone
6b
More local growing data for Monticello: nearby ZIP 84535 weather · frost dates · planting calendar · Utah frost dates
Nearby towns & communities
Aneth
Blanding
Bluff
Halchita
Halls Crossing
La Sal
Mexican Hat
Montezuma Creek
Oljato-Monument Valley
Tselakai Dezza
White Mesa
Climate data from the nearest NOAA station, Monticello 2E, Ut (1.7 mi from Monticello). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.