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Dewey, OK Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Dewey, a city in Washington County, Oklahoma.

Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 102. South wind around 10 mph, with gusts as high as 25 mph.

7-day forecast for Dewey

WhenTempForecastWindPrecip
Today 99°F Sunny 10 mph S 1%
Tonight 72°F Chance Showers And Thunderstorms 5 to 10 mph S 34%
Sunday 88°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 5 mph SE 61%
Sunday Night 65°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 5 mph NE 64%
Monday 81°F Showers And Thunderstorms Likely 5 to 10 mph N 60%
Monday Night 59°F Partly Cloudy 5 to 10 mph N 5%
Tuesday 77°F Mostly Sunny 10 mph NE 5%
Tuesday Night 55°F Mostly Clear 5 to 10 mph NE 1%
Wednesday 79°F Mostly Sunny 5 mph NE 3%
Wednesday Night 57°F Mostly Clear 5 mph NE 4%
Thursday 81°F Slight Chance Rain Showers 0 to 5 mph E 15%
Thursday Night 61°F Partly Cloudy then Slight Chance Rain Showers 5 mph E 15%
Friday 83°F Slight Chance Rain Showers 5 mph E 24%
Friday Night 61°F Partly Cloudy 5 mph E 13%

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

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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 Sep 19, 2026.