Collinsville, OK Weather & Growing Conditions
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 104. Southeast wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 10 mph SE | 0% |
| Tonight | 76°F | Mostly Clear | 10 mph SE | 2% |
| Wednesday | 101°F | Partly Sunny | 5 to 10 mph S | 4% |
| Wednesday Night | 76°F | Partly Cloudy | 5 to 10 mph SE | 9% |
| Thursday | 99°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph S | 17% |
| Thursday Night | 74°F | Chance Showers And Thunderstorms | 5 mph SE | 55% |
| Friday | 95°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 | 18% |
| Saturday | 97°F | Slight Chance Showers And Thunderstorms then Sunny | 5 to 10 mph S | 15% |
| Saturday Night | 76°F | 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 | 98°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). Updated through the day.
Growing snapshot for Collinsville, OK
Last spring frost
Mar 31
First fall frost
Nov 4
Growing season
220 days
Hardiness zone
7a
Explore more for Collinsville, OK: full frost dates · planting calendar · Oklahoma frost dates
Climate data from the nearest NOAA station, Tulsa Intl Ap, Ok (12.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.