Calvin, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calvin, a town in Hughes County, Oklahoma.
This Afternoon
100°F
Sunny
Sunny, with a high near 100. Heat index values as high as 101. South wind around 7 mph.
7-day forecast for Calvin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 100°F | Sunny | 7 mph S | 0% |
| Tonight | 74°F | Mostly Clear | 3 to 7 mph S | 0% |
| Saturday | 100°F | Sunny | 5 to 9 mph S | 0% |
| Saturday Night | 74°F | Mostly Clear | 5 to 8 mph S | 7% |
| Sunday | 98°F | Mostly Sunny then Chance Showers And Thunderstorms | 8 mph S | 41% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 6 mph W | 64% |
| Monday | 91°F | Slight Chance Showers And Thunderstorms | 1 to 6 mph NNE | 64% |
| Monday Night | 66°F | Partly Cloudy | 6 mph NNE | 9% |
| Tuesday | 87°F | Mostly Sunny | 8 mph NNE | 13% |
| Tuesday Night | 63°F | Partly Cloudy | 7 mph NE | 4% |
| Wednesday | 88°F | Mostly Sunny | 6 mph NE | 10% |
| Wednesday Night | 64°F | Partly Cloudy | 2 to 6 mph NE | 10% |
| Thursday | 89°F | Mostly Sunny | 5 mph ENE | 8% |
| Thursday Night | 65°F | Partly Cloudy | 5 mph ENE | 8% |
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 Sep 19, 2026.