Welby, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Welby, a community in Adams County, Colorado.
Today
80°F
Patchy Smoke
Patchy smoke before 3pm, then patchy smoke and a slight chance of showers and thunderstorms. Mostly sunny. High near 80, with temperatures falling to around 78 in the afternoon. East northeast wind around 8 mph. Chance of precipitation is 20%.
7-day forecast for Welby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Patchy Smoke | 8 mph ENE | 16% |
| Tonight | 58°F | Patchy Smoke | 3 to 9 mph NNE | 11% |
| Wednesday | 88°F | Patchy Smoke | 3 to 9 mph NNE | 0% |
| Wednesday Night | 63°F | Mostly Clear | 2 to 9 mph SSW | 3% |
| Thursday | 96°F | Sunny | 2 to 8 mph NW | 0% |
| Thursday Night | 66°F | Mostly Clear | 5 to 8 mph S | 2% |
| Friday | 98°F | Sunny | 3 to 8 mph SSE | 0% |
| Friday Night | 70°F | Mostly Clear | 9 mph SSE | 1% |
| Saturday | 100°F | Sunny | 5 to 8 mph NNE | 1% |
| Saturday Night | 70°F | Partly Cloudy | 5 to 8 mph W | 0% |
| Sunday | 100°F | Sunny | 3 to 8 mph E | 7% |
| Sunday Night | 71°F | Partly Cloudy | 3 to 9 mph WNW | 3% |
| Monday | 98°F | Sunny | 3 to 10 mph N | 14% |
| Monday Night | 69°F | Partly Cloudy | 3 to 10 mph WNW | 14% |
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 Aug 4, 2026.