La Harpe, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for La Harpe, a city in Allen County, Kansas.
Tonight
74°F
Mostly Clear
Mostly clear, with a low around 74. South wind 7 to 10 mph, with gusts as high as 18 mph.
7-day forecast for La Harpe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 74°F | Mostly Clear | 7 to 10 mph S | 2% |
| Saturday | 97°F | Sunny | 9 to 15 mph SSW | 3% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 5 to 12 mph SSW | 65% |
| Sunday | 89°F | Showers And Thunderstorms Likely | 5 mph S | 63% |
| Sunday Night | 65°F | Showers And Thunderstorms Likely | 7 mph NE | 71% |
| Monday | 79°F | Showers And Thunderstorms Likely | 6 to 9 mph NNE | 59% |
| Monday Night | 58°F | Partly Cloudy | 6 to 9 mph NNE | 10% |
| Tuesday | 74°F | Partly Sunny | 9 mph NNE | 4% |
| Tuesday Night | 53°F | Partly Cloudy | 8 mph NE | 2% |
| Wednesday | 77°F | Mostly Sunny | 7 mph ENE | 2% |
| Wednesday Night | 56°F | Partly Cloudy | 5 mph ENE | 5% |
| Thursday | 77°F | Slight Chance Rain Showers | 5 mph ENE | 21% |
| Thursday Night | 59°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph ENE | 16% |
| Friday | 78°F | Slight Chance Rain Showers | 7 mph E | 19% |
Forecast source: National Weather Service (api.weather.gov) for La Harpe (37.916, -95.303). Updated through the day.
Growing snapshot for La Harpe
Last spring frost
Apr 8
First fall frost
Oct 26
Growing season
200 days
Hardiness zone
6b
More local growing data for La Harpe: nearby ZIP 66751 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Iola 1 W, Ks (7.3 mi from La Harpe). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.