Washington, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Washington, a town in Mcclain County, Oklahoma.
Tonight
75°F
Partly Cloudy
Partly cloudy, with a low around 75. Heat index values as high as 98. South wind around 12 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Washington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 75°F | Partly Cloudy | 12 mph S | 10% |
| Sunday | 95°F | Chance Showers And Thunderstorms | 9 to 13 mph S | 65% |
| Sunday Night | 66°F | Showers And Thunderstorms Likely | 3 to 8 mph E | 65% |
| Monday | 86°F | Chance Showers And Thunderstorms then Mostly Sunny | 6 to 10 mph NNE | 34% |
| Monday Night | 62°F | Mostly Clear | 8 mph NNE | 7% |
| Tuesday | 83°F | Mostly Sunny | 10 mph NE | 7% |
| Tuesday Night | 59°F | Partly Cloudy | 9 mph NE | 4% |
| Wednesday | 85°F | Mostly Sunny | 8 mph ENE | 10% |
| Wednesday Night | 61°F | Partly Cloudy | 6 mph E | 4% |
| Thursday | 88°F | Slight Chance Rain Showers | 5 mph SE | 15% |
| Thursday Night | 65°F | Slight Chance Rain Showers | 5 mph ESE | 22% |
| Friday | 88°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph ESE | 23% |
| Friday Night | 66°F | Mostly Cloudy | 6 mph E | 8% |
| Saturday | 91°F | Partly Sunny | 7 mph ESE | 9% |
Forecast source: National Weather Service (api.weather.gov) for Washington (35.055, -97.491). Updated through the day.
Growing snapshot for Washington
Last spring frost
Apr 3
First fall frost
Nov 3
Growing season
212 days
Hardiness zone
7b
More local growing data for Washington: nearby ZIP 73093 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Norman 3Sse, Ok (6.3 mi from Washington). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.