Washington, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Washington, a city in Franklin County, Missouri.
This Afternoon
75°F
Light Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 75, with temperatures falling to around 66 in the afternoon. South wind 12 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 100%.
7-day forecast for Washington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Light Rain | 12 to 15 mph S | 95% |
| Tonight | 49°F | Light Rain Likely | 5 to 8 mph SW | 59% |
| Wednesday | 62°F | Mostly Cloudy | 5 to 10 mph W | 2% |
| Wednesday Night | 38°F | Partly Cloudy | 2 mph SW | 0% |
| Thursday | 65°F | Sunny | 2 to 7 mph W | 4% |
| Thursday Night | 39°F | Mostly Cloudy | 2 mph NW | 11% |
| Friday | 57°F | Mostly Cloudy | 5 mph NW | 3% |
| Friday Night | 35°F | Mostly Cloudy | 1 mph N | 2% |
| Saturday | 57°F | Partly Sunny | 1 mph NW | 0% |
| Saturday Night | 32°F | Partly Cloudy | 0 mph | 3% |
| Sunday | 63°F | Sunny | 0 to 3 mph NW | 8% |
| Sunday Night | 32°F | Mostly Clear | 1 mph N | 3% |
| Monday | 67°F | Sunny | 0 to 3 mph W | 2% |
| Monday Night | 37°F | Mostly Clear | 1 mph NW | 1% |
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 3, 2026.