Owasso, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Owasso, a city in Tulsa County, Oklahoma.
Today
100°F
Sunny
Sunny, with a high near 100. Heat index values as high as 103. Southeast wind around 10 mph.
7-day forecast for Owasso
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 100°F | Sunny | 10 mph SE | 0% |
| Tonight | 77°F | Mostly Clear | 10 mph SE | 1% |
| Wednesday | 101°F | Sunny | 10 mph S | 6% |
| Wednesday Night | 77°F | Mostly Clear | 5 to 10 mph S | 9% |
| Thursday | 99°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 15% |
| Thursday Night | 75°F | Chance Showers And Thunderstorms | 5 to 10 mph SE | 55% |
| Friday | 95°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 10 mph SE | 55% |
| Friday Night | 75°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 18% |
| Saturday | 97°F | Slight Chance Showers And Thunderstorms then Sunny | 5 to 10 mph S | 15% |
| Saturday Night | 76°F | Mostly Clear | 10 mph S | 3% |
| Sunday | 98°F | Sunny | 10 to 15 mph S | 2% |
| Sunday Night | 77°F | Clear | 10 to 15 mph S | 0% |
| Monday | 99°F | Sunny | 10 to 15 mph S | 1% |
| Monday Night | 77°F | Mostly Clear | 10 to 15 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Owasso (36.287, -95.835). Updated through the day.
Growing snapshot for Owasso
Last spring frost
Mar 31
First fall frost
Nov 4
Growing season
220 days
Hardiness zone
7b
More local growing data for Owasso: nearby ZIP 74055 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Bixby
Broken Arrow
Catoosa
Collinsville
Glenpool
Jenks
Leonard
Limestone
Lotsee
Sand Springs
Tulsa
Turley
Valley Park
Climate data from the nearest NOAA station, Tulsa Intl Ap, Ok (6.6 mi from Owasso). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.