Calvin, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calvin, a town in Hughes County, Oklahoma.
Today
103°F
Sunny
Sunny, with a high near 103. Heat index values as high as 104. South wind around 7 mph.
7-day forecast for Calvin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 103°F | Sunny | 7 mph S | 0% |
| Tonight | 77°F | Mostly Clear | 7 mph SSE | 1% |
| Wednesday | 104°F | Sunny | 5 to 8 mph SSW | 3% |
| Wednesday Night | 78°F | Mostly Clear | 7 mph SSE | 4% |
| Thursday | 102°F | Mostly Sunny | 7 mph SSW | 12% |
| Thursday Night | 76°F | Slight Chance Showers And Thunderstorms | 7 mph SSE | 17% |
| Friday | 98°F | Chance Showers And Thunderstorms | 3 to 8 mph S | 30% |
| Friday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 to 8 mph SSE | 26% |
| Saturday | 98°F | Mostly Sunny | 7 mph S | 14% |
| Saturday Night | 75°F | Mostly Clear | 5 to 8 mph S | 8% |
| Sunday | 98°F | Sunny | 5 to 9 mph S | 3% |
| Sunday Night | 76°F | Mostly Clear | 6 to 9 mph S | 2% |
| Monday | 98°F | Sunny | 7 to 10 mph S | 1% |
| Monday Night | 77°F | Mostly Clear | 7 to 10 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov) for Calvin (34.966, -96.250). Updated through the day.
Growing snapshot for Calvin
Last spring frost
Mar 29
First fall frost
Nov 5
Growing season
221 days
Hardiness zone
7b
More local growing data for Calvin: nearby ZIP 74531 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Holdenville 3Ese Mesonet, Ok (15 mi from Calvin). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.