Dewey, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dewey, a city in Washington County, Oklahoma.
This Afternoon
67°F
Mostly Cloudy
Mostly cloudy. High near 67, with temperatures falling to around 59 in the afternoon. Northwest wind around 15 mph, with gusts as high as 30 mph.
7-day forecast for Dewey
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Mostly Cloudy | 15 mph NW | 10% |
| Tonight | 45°F | Mostly Cloudy | 5 to 15 mph NW | 1% |
| Wednesday | 66°F | Sunny | 5 to 10 mph W | 0% |
| Wednesday Night | 42°F | Clear | 0 mph | 0% |
| Thursday | 61°F | Rain Showers Likely | 0 to 5 mph N | 72% |
| Thursday Night | 40°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 21% |
| Friday | 60°F | Mostly Sunny | 5 mph N | 0% |
| Friday Night | 39°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 61°F | Partly Sunny | 0 to 5 mph N | 2% |
| Saturday Night | 39°F | Mostly Clear | 0 mph | 6% |
| Sunday | 66°F | Sunny | 0 to 5 mph W | 2% |
| Sunday Night | 40°F | Clear | 0 mph | 0% |
| Monday | 69°F | Sunny | 0 to 10 mph S | 0% |
| Monday Night | 44°F | Mostly Clear | 0 to 5 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov) for Dewey (36.790, -95.934). Updated through the day.
Growing snapshot for Dewey
Last spring frost
Apr 11
First fall frost
Oct 24
Growing season
195 days
Hardiness zone
7a
More local growing data for Dewey: nearby ZIP 74029 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Bartlesville 3, Ok (7.9 mi from Dewey). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.