Roberts, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Roberts, a city in Jefferson County, Idaho.
Tonight
29°F
Mostly Cloudy then Patchy Fog
Patchy fog after midnight. Mostly cloudy. Low around 29, with temperatures rising to around 31 overnight. North wind around 5 mph.
7-day forecast for Roberts
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 29°F | Mostly Cloudy then Patchy Fog | 5 mph N | 0% |
| Wednesday | 51°F | Patchy Fog then Partly Sunny | 2 to 6 mph W | 1% |
| Wednesday Night | 27°F | Areas Of Fog | 2 to 6 mph SE | 0% |
| Thursday | 47°F | Areas Of Fog then Partly Sunny | 5 mph SSE | 6% |
| Thursday Night | 27°F | Areas Of Fog | 5 mph SSW | 6% |
| Friday | 46°F | Mostly Sunny | 5 mph SSW | 1% |
| Friday Night | 26°F | Partly Cloudy | 3 mph E | 1% |
| Saturday | 49°F | Mostly Sunny | 2 mph N | 0% |
| Saturday Night | 27°F | Partly Cloudy | 3 mph NNE | 0% |
| Sunday | 54°F | Mostly Sunny | 3 mph WSW | 0% |
| Sunday Night | 31°F | Partly Cloudy | 2 mph SSE | 0% |
| Monday | 53°F | Mostly Sunny | 2 mph NNW | 0% |
| Monday Night | 32°F | Mostly Cloudy | 2 mph N | 2% |
| Tuesday | 54°F | Mostly Sunny | 3 mph SSW | 4% |
Forecast source: National Weather Service (api.weather.gov) for Roberts (43.720, -112.129). Updated through the day.
Growing snapshot for Roberts
Last spring frost
May 9
First fall frost
Oct 5
Growing season
148 days
Hardiness zone
5a
More local growing data for Roberts: nearby ZIP 83431 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rigby, Id (6.1 mi from Roberts). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.