Grandfield, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grandfield, a city in Tillman County, Oklahoma.
Overnight
46°F
Mostly Clear
Mostly clear, with a low around 46. West northwest wind around 6 mph.
7-day forecast for Grandfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Mostly Clear | 6 mph WNW | 0% |
| Wednesday | 70°F | Sunny | 3 to 7 mph WSW | 0% |
| Wednesday Night | 50°F | Mostly Clear | 9 mph SE | 0% |
| Thursday | 71°F | Mostly Sunny | 9 to 18 mph W | 10% |
| Thursday Night | 45°F | Mostly Clear | 8 to 17 mph N | 9% |
| Friday | 65°F | Sunny | 9 mph NNE | 0% |
| Friday Night | 42°F | Partly Cloudy | 7 mph NE | 0% |
| Saturday | 63°F | Mostly Sunny | 6 mph NNE | 3% |
| Saturday Night | 42°F | Partly Cloudy | 5 mph NNE | 1% |
| Sunday | 68°F | Sunny | 5 mph N | 0% |
| Sunday Night | 41°F | Mostly Clear | 5 mph SE | 0% |
| Monday | 71°F | Sunny | 3 to 8 mph SSW | 1% |
| Monday Night | 45°F | Mostly Clear | 7 mph S | 1% |
| Tuesday | 72°F | Sunny | 8 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Grandfield (34.231, -98.687). Updated through the day.
Growing snapshot for Grandfield
Last spring frost
Mar 31
First fall frost
Nov 6
Growing season
219 days
Hardiness zone
8a
More local growing data for Grandfield: nearby ZIP 73546 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grandfield 3W Mesonet, Ok (1.6 mi from Grandfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.