Foss, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Foss, a town in Washita County, Oklahoma.
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 100. South southwest wind around 16 mph, with gusts as high as 24 mph.
7-day forecast for Foss
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 16 mph SSW | 10% |
| Tonight | 75°F | Chance Showers And Thunderstorms | 15 mph S | 40% |
| Sunday | 96°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 10 mph SSW | 42% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 7 to 12 mph NNE | 42% |
| Monday | 86°F | Slight Chance Rain Showers then Mostly Sunny | 13 mph NNE | 15% |
| Monday Night | 62°F | Partly Cloudy | 8 to 12 mph NE | 14% |
| Tuesday | 82°F | Partly Sunny | 10 mph ENE | 14% |
| Tuesday Night | 59°F | Mostly Cloudy | 7 to 10 mph E | 7% |
| Wednesday | 84°F | Slight Chance Rain Showers | 7 mph E | 24% |
| Wednesday Night | 63°F | Partly Cloudy then Chance Showers And Thunderstorms | 8 mph E | 26% |
| Thursday | 87°F | Chance Showers And Thunderstorms | 5 to 8 mph SSE | 31% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms | 7 mph SE | 26% |
| Friday | 88°F | Chance Rain Showers | 5 to 8 mph SSE | 26% |
| Friday Night | 67°F | Slight Chance Rain Showers | 7 mph SE | 17% |
Forecast source: National Weather Service (api.weather.gov) for Foss (35.450, -99.171). Updated through the day.
Growing snapshot for Foss
Last spring frost
Apr 3
First fall frost
Nov 1
Growing season
210 days
Hardiness zone
7b
More local growing data for Foss: nearby ZIP 73647 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Bessie 4Wnw Mesonet, Ok (5.7 mi from Foss). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.