Collinsville, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Collinsville, a city in Tulsa County, Oklahoma.
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 103. Southeast wind around 10 mph.
7-day forecast for Collinsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 10 mph SE | 0% |
| Tonight | 77°F | Mostly Clear | 10 mph SE | 2% |
| Wednesday | 100°F | Partly Sunny | 10 mph S | 4% |
| Wednesday Night | 76°F | Partly Cloudy | 5 to 10 mph SE | 9% |
| Thursday | 98°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph S | 17% |
| Thursday Night | 75°F | Chance Showers And Thunderstorms | 5 mph SE | 55% |
| Friday | 94°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 10 mph S | 55% |
| Friday Night | 74°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 19% |
| 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 | 97°F | Sunny | 10 to 15 mph S | 2% |
| Sunday Night | 77°F | Clear | 10 to 15 mph S | 0% |
| Monday | 98°F | Sunny | 10 to 15 mph S | 1% |
| Monday Night | 78°F | Mostly Clear | 10 to 15 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Collinsville (36.369, -95.862). Updated through the day.
Growing snapshot for Collinsville
Last spring frost
Mar 31
First fall frost
Nov 4
Growing season
220 days
Hardiness zone
7a
More local growing data for Collinsville: nearby ZIP 74021 weather · frost dates · planting calendar · Oklahoma frost dates
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Climate data from the nearest NOAA station, Tulsa Intl Ap, Ok (12.6 mi from Collinsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.