Harper, KS Weather & Growing Conditions
Tonight
75°F
Mostly Clear
Mostly clear, with a low around 75. South wind around 13 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 75°F | Mostly Clear | 13 mph S | 1% |
| Saturday | 98°F | Sunny | 10 to 15 mph SSW | 12% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 12 mph SSE | 61% |
| Sunday | 87°F | Chance Showers And Thunderstorms | 5 to 8 mph NE | 48% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 10 mph NNE | 48% |
| Monday | 80°F | Slight Chance Rain Showers then Partly Sunny | 10 mph N | 16% |
| Monday Night | 58°F | Partly Cloudy | 6 to 9 mph NE | 8% |
| Tuesday | 76°F | Mostly Sunny | 8 mph NE | 2% |
| Tuesday Night | 56°F | Partly Cloudy | 8 mph E | 2% |
| Wednesday | 78°F | Mostly Sunny | 6 mph ESE | 10% |
| Wednesday Night | 61°F | Mostly Cloudy then Chance Rain Showers | 6 mph ESE | 30% |
| Thursday | 80°F | Chance Rain Showers | 6 mph ESE | 37% |
| 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). Updated through the day.
Growing snapshot for Harper, KS
Last spring frost
Apr 9
First fall frost
Oct 30
Growing season
205 days
Hardiness zone
7a
Explore more for Harper, KS: full frost dates · planting calendar · Kansas frost dates
Climate data from the nearest NOAA station, Anthony, Ks (11.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.