Nunn, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Nunn, a town in Weld County, Colorado.
Today
75°F
Patchy Smoke
Patchy smoke. Mostly sunny, with a high near 75. East southeast wind 9 to 13 mph, with gusts as high as 21 mph.
7-day forecast for Nunn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Patchy Smoke | 9 to 13 mph ESE | 3% |
| Tonight | 52°F | Patchy Smoke | 5 to 15 mph ESE | 6% |
| Wednesday | 84°F | Patchy Smoke | 5 to 13 mph E | 0% |
| Wednesday Night | 53°F | Patchy Smoke then Mostly Clear | 5 to 14 mph ENE | 1% |
| Thursday | 95°F | Sunny | 5 to 14 mph NW | 1% |
| Thursday Night | 57°F | Mostly Clear | 6 to 14 mph N | 1% |
| Friday | 97°F | Sunny | 5 to 13 mph NE | 0% |
| Friday Night | 60°F | Mostly Clear | 7 to 13 mph ENE | 0% |
| Saturday | 100°F | Sunny | 7 to 15 mph NW | 1% |
| Saturday Night | 61°F | Partly Cloudy | 8 to 15 mph NNW | 1% |
| Sunday | 98°F | Sunny | 7 to 13 mph W | 5% |
| Sunday Night | 63°F | Partly Cloudy | 9 to 14 mph NW | 5% |
| Monday | 97°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 8 to 14 mph NNE | 17% |
| Monday Night | 62°F | Mostly Cloudy | 10 to 15 mph NW | 12% |
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
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Severance
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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 Aug 4, 2026.