Harper, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harper, a city in Harper County, Kansas.
Tonight
75°F
Mostly Clear
Mostly clear, with a low around 75. South wind around 12 mph, with gusts as high as 22 mph.
7-day forecast for Harper
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 75°F | Mostly Clear | 12 mph S | 1% |
| Saturday | 99°F | Sunny | 10 to 14 mph SSW | 11% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 12 mph SSE | 60% |
| Sunday | 88°F | Chance Showers And Thunderstorms | 5 to 8 mph NE | 49% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 10 mph NNE | 49% |
| Monday | 80°F | Slight Chance Rain Showers then Partly Sunny | 10 mph N | 17% |
| Monday Night | 58°F | Partly Cloudy | 6 to 9 mph NE | 8% |
| Tuesday | 77°F | Mostly Sunny | 8 mph NE | 2% |
| Tuesday Night | 56°F | Partly Cloudy | 8 mph E | 2% |
| Wednesday | 78°F | Mostly Sunny | 6 mph E | 10% |
| Wednesday Night | 61°F | Mostly Cloudy then Chance Rain Showers | 6 mph E | 29% |
| Thursday | 80°F | Chance Rain Showers | 6 mph ESE | 36% |
| Thursday Night | 62°F | Chance Rain Showers | 6 mph ESE | 34% |
| Friday | 82°F | Chance Rain Showers | 7 mph SE | 34% |
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 Sep 19, 2026.