Washington, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Washington, a city in Washington County, Utah.
This Afternoon
90°F
Isolated Showers And Thunderstorms
Isolated showers and thunderstorms after 3pm. Sunny, with a high near 90. Southwest wind around 5 mph.
7-day forecast for Washington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 90°F | Isolated Showers And Thunderstorms | 5 mph SW | 12% |
| Tonight | 65°F | Mostly Clear | 5 mph NNE | 5% |
| Saturday | 89°F | Sunny | 1 to 5 mph SE | 0% |
| Saturday Night | 61°F | Mostly Clear | 5 mph NNE | 0% |
| Sunday | 91°F | Sunny | 0 to 3 mph ESE | 0% |
| Sunday Night | 66°F | Partly Cloudy | 0 to 3 mph NNE | 0% |
| Monday | 91°F | Mostly Sunny | 1 to 5 mph ESE | 4% |
| Monday Night | 65°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 6 mph N | 30% |
| Tuesday | 87°F | Chance Showers And Thunderstorms | 1 to 5 mph ESE | 29% |
| Tuesday Night | 63°F | Mostly Clear | 2 to 6 mph NE | 9% |
| Wednesday | 91°F | Sunny | 0 to 5 mph ESE | 7% |
| Wednesday Night | 66°F | Mostly Clear | 0 to 8 mph ENE | 6% |
| Thursday | 93°F | Mostly Sunny | 2 to 6 mph ESE | 5% |
| Thursday Night | 68°F | Partly Cloudy | 3 to 12 mph E | 11% |
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
Nearby towns & communities
Apple Valley
Central
Dammeron Valley
Enterprise
Hildale
Hurricane
Ivins
La Verkin
Leeds
New Harmony
Pine Valley
Rockville
Santa Clara
Springdale
St. George
Toquerville
Veyo
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 Sep 18, 2026.