Rosston, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rosston, a town in Harper County, Oklahoma.
Today
99°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 99. South southwest wind around 12 mph.
7-day forecast for Rosston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 12 mph SSW | 12% |
| Tonight | 69°F | Slight Chance Showers And Thunderstorms | 6 to 12 mph NE | 12% |
| Wednesday | 99°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 13% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 10 mph E | 31% |
| Thursday | 97°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 7 to 10 mph ESE | 18% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 8 to 12 mph SE | 43% |
| Friday | 100°F | Slight Chance Showers And Thunderstorms then Sunny | 10 mph S | 16% |
| Friday Night | 71°F | Mostly Clear | 12 mph S | 12% |
| Saturday | 101°F | Sunny | 8 to 13 mph SSW | 7% |
| Saturday Night | 74°F | Clear | 15 mph S | 0% |
| Sunday | 101°F | Sunny | 15 mph SSW | 0% |
| Sunday Night | 75°F | Mostly Clear | 16 mph S | 0% |
| Monday | 101°F | Sunny | 18 mph SSW | 0% |
| Monday Night | 75°F | Mostly Clear | 17 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Rosston (36.813, -99.933). Updated through the day.
Growing snapshot for Rosston
Last spring frost
Apr 13
First fall frost
Oct 28
Growing season
196 days
Hardiness zone
7a
More local growing data for Rosston: nearby ZIP 73855 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Gate, Ok (11.4 mi from Rosston). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.