Helena, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Helena, a town in Alfalfa County, Oklahoma.
This Afternoon
102°F
Partly Sunny
Partly sunny, with a high near 102. Heat index values as high as 104. South southwest wind around 17 mph, with gusts as high as 26 mph.
7-day forecast for Helena
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 102°F | Partly Sunny | 17 mph SSW | 4% |
| Tonight | 73°F | Chance Showers And Thunderstorms | 8 to 16 mph SSE | 42% |
| Sunday | 92°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 9 mph ENE | 20% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 8 to 13 mph NNE | 28% |
| Monday | 85°F | Chance Rain Showers then Partly Sunny | 12 mph NNE | 28% |
| Monday Night | 59°F | Mostly Clear | 9 mph NE | 2% |
| Tuesday | 82°F | Mostly Sunny | 9 mph NE | 2% |
| Tuesday Night | 57°F | Partly Cloudy | 9 mph ENE | 1% |
| Wednesday | 83°F | Mostly Sunny | 7 mph E | 7% |
| Wednesday Night | 60°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 8 mph ESE | 24% |
| Thursday | 87°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 7 mph SE | 39% |
| Thursday Night | 65°F | Slight Chance Showers And Thunderstorms | 7 mph ESE | 43% |
| Friday | 88°F | Chance Showers And Thunderstorms | 7 mph SE | 43% |
| Friday Night | 67°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 8 mph E | 16% |
Forecast source: National Weather Service (api.weather.gov) for Helena (36.546, -98.272). Updated through the day.
Growing snapshot for Helena
Last spring frost
Apr 9
First fall frost
Oct 31
Growing season
205 days
Hardiness zone
7a
More local growing data for Helena: nearby ZIP 73741 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Helena 1 Sse, Ok (1.1 mi from Helena). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.