Washington, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Washington, a city in Franklin County, Missouri.
Tonight
43°F
Partly Cloudy
Partly cloudy, with a low around 43. Southwest wind 2 to 8 mph.
7-day forecast for Washington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Partly Cloudy | 2 to 8 mph SW | 0% |
| Thursday | 61°F | Sunny | 2 to 8 mph W | 9% |
| Thursday Night | 42°F | Slight Chance Light Rain then Mostly Cloudy | 2 mph NW | 17% |
| Friday | 55°F | Partly Sunny | 2 to 6 mph N | 5% |
| Friday Night | 29°F | Mostly Clear | 2 mph N | 0% |
| Saturday | 54°F | Mostly Sunny | 1 mph N | 0% |
| Saturday Night | 28°F | Mostly Clear | 0 mph | 0% |
| Sunday | 61°F | Sunny | 1 mph NW | 0% |
| Sunday Night | 31°F | Mostly Clear | 0 mph | 0% |
| Monday | 66°F | Sunny | 2 mph W | 0% |
| Monday Night | 35°F | Clear | 1 mph W | 1% |
| Tuesday | 67°F | Sunny | 1 mph W | 3% |
| Tuesday Night | 37°F | Mostly Clear | 0 mph | 3% |
| Veterans Day | 68°F | Mostly Sunny | 1 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Washington (38.552, -91.015). Updated through the day.
Growing snapshot for Washington
Last spring frost
Apr 8
First fall frost
Oct 25
Growing season
199 days
Hardiness zone
6b
More local growing data for Washington: nearby ZIP 63090 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Berger
Charmwood
Gerald
Gray Summit
LaBarque Creek
Lake St. Clair
Lake Tekakwitha
Leslie
Miramiguoa Park
New Haven
Oak Grove Village
Pacific
Parkway
St. Clair
Stanton
Sullivan
Three Creeks
Union
Villa Ridge
Climate data from the nearest NOAA station, Washington, Mo (4 mi from Washington). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.