Colby, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Colby, a city in Thomas County, Kansas.
Today
80°F
Slight Chance Rain Showers then Partly Sunny
A slight chance of rain showers between 10am and 11am. Partly sunny. High near 80, with temperatures falling to around 75 in the afternoon. Northeast wind 10 to 20 mph. Chance of precipitation is 20%.
7-day forecast for Colby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Slight Chance Rain Showers then Partly Sunny | 10 to 20 mph NE | 16% |
| Tonight | 57°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 15 mph NE | 27% |
| Wednesday | 80°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 5 to 10 mph NE | 23% |
| Wednesday Night | 58°F | Partly Cloudy | 5 to 10 mph E | 12% |
| Thursday | 90°F | Sunny | 0 to 10 mph SE | 12% |
| Thursday Night | 63°F | Mostly Clear | 5 to 10 mph SE | 3% |
| Friday | 97°F | Sunny | 5 mph SE | 2% |
| Friday Night | 65°F | Clear | 5 to 10 mph S | 4% |
| Saturday | 101°F | Sunny | 5 to 10 mph S | 0% |
| Saturday Night | 69°F | Mostly Clear | 10 to 15 mph S | 2% |
| Sunday | 102°F | Sunny | 10 to 15 mph S | 0% |
| Sunday Night | 71°F | Mostly Clear | 15 mph S | 2% |
| Monday | 102°F | Sunny | 10 to 15 mph S | 2% |
| Monday Night | 70°F | Mostly Clear | 10 to 15 mph SE | 10% |
Forecast source: National Weather Service (api.weather.gov) for Colby (39.385, -101.045). Updated through the day.
Growing snapshot for Colby
Last spring frost
May 2
First fall frost
Oct 9
Growing season
156 days
Hardiness zone
6a
More local growing data for Colby: nearby ZIP 67701 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Colby 1Sw, Ks (1 mi from Colby). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.