Foster, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Foster, a town in Garvin County, Oklahoma.
Today
104°F
Sunny
Sunny, with a high near 104. Heat index values as high as 104. South wind around 6 mph.
7-day forecast for Foster
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 104°F | Sunny | 6 mph S | 2% |
| Tonight | 76°F | Mostly Clear | 7 mph SSE | 2% |
| Wednesday | 103°F | Sunny | 5 to 9 mph SSW | 2% |
| Wednesday Night | 76°F | Mostly Clear | 7 mph SSE | 2% |
| Thursday | 102°F | Mostly Sunny | 7 mph SSW | 11% |
| Thursday Night | 75°F | Partly Cloudy | 7 mph SSE | 11% |
| Friday | 99°F | Chance Showers And Thunderstorms | 3 to 8 mph S | 28% |
| Friday Night | 73°F | Chance Showers And Thunderstorms then Mostly Clear | 5 to 8 mph SSE | 28% |
| Saturday | 99°F | Sunny | 3 to 7 mph S | 9% |
| Saturday Night | 73°F | Mostly Clear | 5 to 8 mph S | 4% |
| Sunday | 99°F | Sunny | 5 to 10 mph S | 2% |
| Sunday Night | 74°F | Mostly Clear | 6 to 10 mph SSE | 1% |
| Monday | 99°F | Sunny | 6 to 12 mph S | 2% |
| Monday Night | 74°F | Mostly Clear | 7 to 12 mph S | 2% |
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 Aug 4, 2026.