Colby, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Colby, a city in Thomas County, Kansas.
Tonight
63°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. Low around 63, with temperatures rising to around 65 overnight. North wind 5 to 10 mph. Chance of precipitation is 40%.
7-day forecast for Colby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 37% |
| Saturday | 79°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 20% |
| Saturday Night | 59°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph NE | 54% |
| Sunday | 69°F | Chance Rain Showers | 5 to 10 mph NE | 53% |
| Sunday Night | 56°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 47% |
| Monday | 70°F | Chance Rain Showers then Partly Sunny | 0 to 5 mph N | 26% |
| Monday Night | 54°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph E | 15% |
| Tuesday | 68°F | Slight Chance Rain Showers | 5 to 15 mph SE | 15% |
| Tuesday Night | 57°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph SE | 23% |
| Wednesday | 72°F | Slight Chance Rain Showers | 15 mph S | 23% |
| Wednesday Night | 59°F | Chance Rain Showers | 10 to 15 mph S | 42% |
| Thursday | 74°F | Chance Rain Showers | 5 to 10 mph S | 40% |
| Thursday Night | 59°F | Chance Rain Showers | 5 to 10 mph SE | 30% |
| Friday | 74°F | Chance Rain Showers | 5 to 10 mph SE | 30% |
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 Sep 19, 2026.