Welby, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Welby, a community in Adams County, Colorado.
This Afternoon
84°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 84, with temperatures falling to around 75 in the afternoon. Northwest wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Welby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Chance Showers And Thunderstorms | 7 mph NW | 46% |
| Tonight | 57°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 7 mph W | 39% |
| Saturday | 77°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 8 mph ENE | 67% |
| Saturday Night | 54°F | Chance Showers And Thunderstorms | 1 to 7 mph WNW | 53% |
| Sunday | 72°F | Showers And Thunderstorms Likely | 1 to 7 mph NE | 57% |
| Sunday Night | 51°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 7 mph ESE | 34% |
| Monday | 75°F | Mostly Sunny | 1 to 7 mph NE | 2% |
| Monday Night | 53°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 1 to 7 mph SSW | 16% |
| Tuesday | 77°F | Mostly Sunny | 1 to 6 mph SSW | 11% |
| Tuesday Night | 55°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph S | 19% |
| Wednesday | 78°F | Partly Sunny | 2 to 6 mph NNE | 13% |
| Wednesday Night | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph SW | 17% |
| Thursday | 79°F | Mostly Sunny | 2 to 6 mph N | 12% |
| Thursday Night | 57°F | Chance Rain Showers then Mostly Cloudy | 2 to 6 mph S | 29% |
Forecast source: National Weather Service (api.weather.gov) for Welby (39.840, -104.966). Updated through the day.
Growing snapshot for Welby
Last spring frost
May 2
First fall frost
Oct 11
Growing season
160 days
Hardiness zone
6a
More local growing data for Welby: nearby ZIP 80229 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Bennett
Berkley
Brighton
Byers
Comanche Creek
Commerce City
Derby
Federal Heights
Lochbuie
Northglenn
Peoria
Shaw Heights
Sherrelwood
Strasburg
Thornton
Todd Creek
Twin Lakes
Westminster
Climate data from the nearest NOAA station, Northglenn, Co (4.3 mi from Welby). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.