Foster, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Foster, a town in Garvin County, Oklahoma.
Tonight
73°F
Mostly Clear
Mostly clear, with a low around 73. Heat index values as high as 98. South wind 3 to 8 mph.
7-day forecast for Foster
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Mostly Clear | 3 to 8 mph S | 0% |
| Saturday | 99°F | Sunny | 5 to 9 mph SSW | 1% |
| Saturday Night | 74°F | Mostly Clear | 6 to 9 mph S | 10% |
| Sunday | 97°F | Slight Chance Showers And Thunderstorms | 8 mph S | 56% |
| Sunday Night | 66°F | Showers And Thunderstorms Likely | 1 to 7 mph ESE | 70% |
| Monday | 90°F | Chance Rain Showers | 1 to 6 mph NNE | 48% |
| Monday Night | 64°F | Mostly Clear then Slight Chance Rain Showers | 3 to 7 mph NE | 16% |
| Tuesday | 86°F | Slight Chance Rain Showers then Mostly Sunny | 6 to 9 mph NE | 16% |
| Tuesday Night | 62°F | Partly Cloudy | 3 to 8 mph NE | 5% |
| Wednesday | 87°F | Mostly Sunny | 6 mph ENE | 14% |
| Wednesday Night | 63°F | Partly Cloudy | 2 to 6 mph ENE | 8% |
| Thursday | 88°F | Slight Chance Rain Showers | 5 mph E | 20% |
| Thursday Night | 65°F | Partly Cloudy | 5 mph ENE | 7% |
| Friday | 88°F | Partly Sunny | 5 mph ESE | 10% |
Forecast source: National Weather Service (api.weather.gov) for Foster (34.606, -97.490). Updated through the day.
Growing snapshot for Foster
Last spring frost
Apr 5
First fall frost
Nov 1
Growing season
210 days
Hardiness zone
7b
More local growing data for Foster: nearby ZIP 73433 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Pauls Valley 4 Wsw, Ok (9.8 mi from Foster). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.