Ault, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ault, a town in Weld County, Colorado.
Today
75°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between noon and 2pm, then showers and thunderstorms likely. Partly sunny. High near 75, with temperatures falling to around 69 in the afternoon. South southwest wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Ault
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 8 mph SSW | 70% |
| Tonight | 49°F | Chance Showers And Thunderstorms | 3 to 7 mph NNE | 45% |
| Sunday | 69°F | Chance Rain Showers | 6 mph NE | 38% |
| Sunday Night | 46°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph NE | 30% |
| Monday | 70°F | Sunny | 3 to 9 mph E | 1% |
| Monday Night | 48°F | Partly Cloudy | 6 to 9 mph ESE | 13% |
| Tuesday | 74°F | Sunny | 3 to 9 mph ESE | 3% |
| Tuesday Night | 51°F | Partly Cloudy | 6 to 12 mph E | 14% |
| Wednesday | 77°F | Mostly Sunny | 7 mph E | 7% |
| Wednesday Night | 51°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 mph NE | 15% |
| Thursday | 79°F | Mostly Sunny | 3 to 8 mph E | 2% |
| Thursday Night | 52°F | Partly Cloudy | 3 to 8 mph ESE | 11% |
| Friday | 79°F | Mostly Sunny | 3 to 12 mph ESE | 8% |
| Friday Night | 53°F | Partly Cloudy | 5 to 12 mph E | 14% |
Forecast source: National Weather Service (api.weather.gov) for Ault (40.589, -104.739). Updated through the day.
Growing snapshot for Ault
Last spring frost
May 13
First fall frost
Sep 27
Growing season
136 days
Hardiness zone
5b
More local growing data for Ault: nearby ZIP 80650 weather · frost dates · planting calendar · Colorado frost dates
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Climate data from the nearest NOAA station, Nunn 7 Nne, Co (11 mi from Ault). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.