Buffalo, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Buffalo, a town in Harper County, Oklahoma.
This Afternoon
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 99. South southwest wind around 16 mph, with gusts as high as 24 mph.
7-day forecast for Buffalo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 99°F | Sunny | 16 mph SSW | 0% |
| Tonight | 77°F | Mostly Clear | 15 mph S | 2% |
| Saturday | 100°F | Sunny then Slight Chance Showers And Thunderstorms | 14 mph SSW | 23% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 6 to 13 mph SSW | 42% |
| Sunday | 89°F | Chance Rain Showers then Partly Sunny | 6 to 9 mph NNE | 42% |
| Sunday Night | 62°F | Slight Chance Showers And Thunderstorms | 5 to 12 mph NNE | 23% |
| Monday | 83°F | Slight Chance Rain Showers then Partly Sunny | 5 to 8 mph NE | 23% |
| Monday Night | 60°F | Partly Cloudy | 5 to 8 mph ENE | 8% |
| Tuesday | 79°F | Partly Sunny | 7 mph E | 13% |
| Tuesday Night | 60°F | Partly Cloudy then Slight Chance Rain Showers | 8 mph ESE | 20% |
| Wednesday | 81°F | Chance Rain Showers | 7 mph SE | 28% |
| Wednesday Night | 63°F | Chance Rain Showers | 5 to 8 mph SE | 44% |
| Thursday | 82°F | Chance Rain Showers | 7 mph SSE | 47% |
| Thursday Night | 63°F | Chance Rain Showers | 3 to 7 mph SE | 44% |
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 Sep 18, 2026.