Welby, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Welby, a community in Adams County, Colorado.
This Afternoon
57°F
Sunny
Sunny. High near 57, with temperatures falling to around 53 in the afternoon. Northeast wind around 5 mph.
7-day forecast for Welby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 57°F | Sunny | 5 mph NE | 0% |
| Tonight | 35°F | Mostly Clear | 3 mph S | 0% |
| Wednesday | 57°F | Mostly Sunny | 1 to 6 mph NNW | 10% |
| Wednesday Night | 37°F | Mostly Cloudy | 1 to 5 mph NW | 9% |
| Thursday | 58°F | Sunny | 5 mph S | 0% |
| Thursday Night | 36°F | Partly Cloudy | 2 mph SSW | 1% |
| Friday | 57°F | Mostly Sunny | 5 mph N | 7% |
| Friday Night | 36°F | Mostly Clear | 3 mph SSW | 7% |
| Saturday | 60°F | Sunny | 5 mph SE | 1% |
| Saturday Night | 36°F | Mostly Clear | 3 mph WSW | 0% |
| Sunday | 68°F | Sunny | 2 to 6 mph SSW | 0% |
| Sunday Night | 41°F | Mostly Clear | 2 to 6 mph WSW | 0% |
| Monday | 66°F | Sunny | 5 mph SE | 0% |
| Monday Night | 41°F | Partly Cloudy | 5 mph W | 0% |
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 Nov 4, 2026.