Harper, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harper, a city in Harper County, Kansas.
Today
100°F
Mostly Sunny
Mostly sunny, with a high near 100. South southeast wind 5 to 9 mph.
7-day forecast for Harper
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 100°F | Mostly Sunny | 5 to 9 mph SSE | 11% |
| Tonight | 74°F | Partly Cloudy | 7 to 10 mph ESE | 7% |
| Wednesday | 97°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 8 mph NNW | 15% |
| Wednesday Night | 70°F | Slight Chance Showers And Thunderstorms | 8 mph NE | 27% |
| Thursday | 95°F | Chance Showers And Thunderstorms | 8 mph S | 35% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 8 mph ESE | 63% |
| Friday | 95°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 6 to 10 mph SSE | 63% |
| Friday Night | 72°F | Mostly Clear | 5 to 9 mph SSE | 8% |
| Saturday | 98°F | Sunny | 5 to 10 mph S | 8% |
| Saturday Night | 74°F | Clear | 10 mph SSE | 1% |
| Sunday | 99°F | Sunny | 9 to 13 mph S | 0% |
| Sunday Night | 75°F | Mostly Clear | 12 mph S | 0% |
| Monday | 99°F | Sunny | 10 to 15 mph SSW | 0% |
| Monday Night | 76°F | Mostly Clear | 14 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Harper (37.285, -98.028). Updated through the day.
Growing snapshot for Harper
Last spring frost
Apr 9
First fall frost
Oct 30
Growing season
205 days
Hardiness zone
7a
More local growing data for Harper: nearby ZIP 67058 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Anthony, Ks (11.4 mi from Harper). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.