Buffalo, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Buffalo, a town in Harper County, Oklahoma.
Today
102°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 102. Heat index values as high as 98. South southwest wind around 10 mph.
7-day forecast for Buffalo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 102°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 10 mph SSW | 12% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms | 6 to 12 mph NNW | 12% |
| Wednesday | 100°F | Slight Chance Showers And Thunderstorms | 3 to 9 mph WSW | 14% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms | 6 to 10 mph E | 31% |
| Thursday | 98°F | Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 10 mph ESE | 26% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms | 7 to 12 mph SE | 46% |
| Friday | 100°F | Slight Chance Showers And Thunderstorms then Sunny | 7 to 10 mph S | 19% |
| Friday Night | 72°F | Mostly Clear | 7 to 12 mph SSE | 11% |
| Saturday | 102°F | Sunny | 6 to 12 mph S | 9% |
| Saturday Night | 75°F | Clear | 14 mph S | 0% |
| Sunday | 102°F | Sunny | 14 mph SSW | 0% |
| Sunday Night | 76°F | Mostly Clear | 15 mph S | 0% |
| Monday | 102°F | Sunny | 16 mph SSW | 0% |
| Monday Night | 76°F | Mostly Clear | 16 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov) for Buffalo (36.829, -99.638). Updated through the day.
Growing snapshot for Buffalo
Last spring frost
Apr 13
First fall frost
Oct 25
Growing season
195 days
Hardiness zone
7a
More local growing data for Buffalo: nearby ZIP 73834 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Buffalo 1Sw Mesonet, Ok (4.1 mi from Buffalo). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.