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Roy, UT Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Roy, a city in Weber County, Utah.

This Afternoon
54°F
Mostly Sunny
Mostly sunny. High near 54, with temperatures falling to around 51 in the afternoon. North wind around 3 mph.

7-day forecast for Roy

WhenTempForecastWindPrecip
This Afternoon 54°F Mostly Sunny 3 mph N 1%
Tonight 38°F Mostly Cloudy 5 mph NE 8%
Wednesday 53°F Chance Light Rain 5 mph S 30%
Wednesday Night 36°F Chance Light Rain then Partly Cloudy 5 mph ESE 30%
Thursday 53°F Partly Sunny then Slight Chance Light Rain 5 mph WSW 15%
Thursday Night 36°F Slight Chance Light Rain then Partly Cloudy 3 mph NE 15%
Friday 54°F Mostly Sunny 5 mph NW 1%
Friday Night 35°F Partly Cloudy 3 mph E 1%
Saturday 56°F Sunny 1 to 5 mph W 0%
Saturday Night 37°F Mostly Clear 2 mph E 0%
Sunday 60°F Sunny 3 mph WSW 0%
Sunday Night 40°F Partly Cloudy 2 mph ENE 0%
Monday 61°F Mostly Sunny 2 mph WSW 1%
Monday Night 42°F Mostly Cloudy 1 mph E 5%

Forecast source: National Weather Service (api.weather.gov) for Roy (41.171, -112.048). Updated through the day.

Growing snapshot for Roy

Last spring frost
Apr 22
First fall frost
Oct 22
Growing season
180 days
Hardiness zone
7a

More local growing data for Roy: nearby ZIP 84067 weather · frost dates · planting calendar · Utah frost dates

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Climate data from the nearest NOAA station, Ogden Hinkley Ap, Ut (2.5 mi from Roy). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.