Nunn, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Nunn, a town in Weld County, Colorado.
Tonight
52°F
Slight Chance Showers And Thunderstorms then Mostly Cloudy
A slight chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 52. North northwest wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Nunn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 5 mph NNW | 24% |
| Saturday | 74°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 12 mph W | 72% |
| Saturday Night | 48°F | Chance Showers And Thunderstorms | 5 to 8 mph NW | 44% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 8 mph NE | 57% |
| Sunday Night | 45°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 7 mph NNE | 19% |
| Monday | 70°F | Sunny | 3 to 12 mph SSW | 2% |
| Monday Night | 47°F | Mostly Clear | 6 to 12 mph ESE | 10% |
| Tuesday | 74°F | Mostly Sunny | 5 to 13 mph ESE | 14% |
| Tuesday Night | 50°F | Chance Showers And Thunderstorms then Mostly Cloudy | 6 to 13 mph ESE | 38% |
| Wednesday | 76°F | Mostly Sunny | 6 to 9 mph E | 14% |
| Wednesday Night | 50°F | Mostly Cloudy | 5 to 8 mph ENE | 14% |
| Thursday | 76°F | Mostly Sunny | 6 to 12 mph NE | 10% |
| Thursday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 12 mph ESE | 20% |
| Friday | 77°F | Mostly Sunny | 5 to 12 mph SE | 11% |
Forecast source: National Weather Service (api.weather.gov) for Nunn (40.714, -104.789). Updated through the day.
Growing snapshot for Nunn
Last spring frost
May 13
First fall frost
Sep 27
Growing season
136 days
Hardiness zone
5b
More local growing data for Nunn: nearby ZIP 80650 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Aristocrat Ranchettes
Ault
Berthoud
Briggsdale
Dacono
Eaton
Erie
Evans
Firestone
Fort Lupton
Frederick
Garden City
Gilcrest
Greeley
Grover
Hudson
Johnstown
Keenesburg
Kersey
La Salle
Mead
Milliken
Orchard
Pierce
Platteville
Raymer (New Raymer)
Severance
Windsor
Climate data from the nearest NOAA station, Nunn 7 Nne, Co (11 mi from Nunn). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.