Washington, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Washington, a city in Washington County, Utah.
This Afternoon
63°F
Sunny
Sunny. High near 63, with temperatures falling to around 61 in the afternoon. North northwest wind around 6 mph.
7-day forecast for Washington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Sunny | 6 mph NNW | 1% |
| Tonight | 42°F | Mostly Clear | 2 to 6 mph NE | 0% |
| Thursday | 62°F | Partly Sunny | 2 mph NNW | 0% |
| Thursday Night | 43°F | Partly Cloudy | 3 mph NNE | 0% |
| Friday | 63°F | Sunny | 2 mph NNE | 0% |
| Friday Night | 43°F | Mostly Clear | 1 to 8 mph NNE | 0% |
| Saturday | 65°F | Sunny | 2 mph NNE | 0% |
| Saturday Night | 45°F | Clear | 0 to 5 mph NE | 0% |
| Sunday | 67°F | Sunny | 0 to 5 mph E | 0% |
| Sunday Night | 47°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Monday | 67°F | Mostly Sunny | 0 to 5 mph ESE | 0% |
| Monday Night | 48°F | Partly Cloudy | 2 mph ENE | 0% |
| Tuesday | 67°F | Mostly Sunny | 2 mph ENE | 0% |
| Tuesday Night | 48°F | Partly Cloudy | 2 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Washington (37.127, -113.488). Updated through the day.
Growing snapshot for Washington
Last spring frost
Mar 14
First fall frost
Nov 10
Growing season
239 days
Hardiness zone
8b
More local growing data for Washington: nearby ZIP 84780 weather · frost dates · planting calendar · Utah frost dates
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St. George
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Virgin
Climate data from the nearest NOAA station, St George, Ut (7.4 mi from Washington). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.