Menan, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Menan, a city in Jefferson County, Idaho.
Today
49°F
Mostly Sunny
Mostly sunny. High near 49, with temperatures falling to around 43 in the afternoon. North wind around 5 mph.
7-day forecast for Menan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 49°F | Mostly Sunny | 5 mph N | 0% |
| Tonight | 30°F | Mostly Cloudy | 6 mph NNE | 0% |
| Wednesday | 51°F | Mostly Sunny | 6 mph S | 0% |
| Wednesday Night | 28°F | Areas Of Fog | 6 mph SSE | 0% |
| Thursday | 46°F | Patchy Fog then Partly Sunny | 5 mph SSW | 14% |
| Thursday Night | 29°F | Areas Of Fog | 2 to 6 mph S | 13% |
| Friday | 47°F | Mostly Sunny | 2 to 7 mph SSW | 2% |
| Friday Night | 28°F | Partly Cloudy | 3 mph SE | 1% |
| Saturday | 49°F | Mostly Sunny | 3 mph NNW | 0% |
| Saturday Night | 28°F | Mostly Clear | 5 mph NNE | 0% |
| Sunday | 54°F | Mostly Sunny | 3 mph W | 0% |
| Sunday Night | 31°F | Partly Cloudy | 3 mph SE | 0% |
| Monday | 54°F | Partly Sunny | 3 mph N | 0% |
| Monday Night | 33°F | Mostly Cloudy | 3 mph E | 2% |
Forecast source: National Weather Service (api.weather.gov) for Menan (43.722, -111.992). Updated through the day.
Growing snapshot for Menan
Last spring frost
May 9
First fall frost
Oct 5
Growing season
148 days
Hardiness zone
5a
More local growing data for Menan: nearby ZIP 83434 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rigby, Id (7.3 mi from Menan). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.