Lamont, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lamont, a city in Buchanan County, Iowa.
Overnight
63°F
Showers And Thunderstorms
Showers and thunderstorms before 4am, then patchy fog and occasional showers and thunderstorms. Cloudy, with a low around 63. East wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Lamont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Showers And Thunderstorms | 10 mph E | 91% |
| Saturday | 76°F | Patchy Fog | 5 to 10 mph S | 77% |
| Saturday Night | 59°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 74% |
| Sunday | 66°F | Chance Rain Showers | 15 mph NE | 35% |
| Sunday Night | 52°F | Chance Rain Showers | 15 mph NE | 36% |
| Monday | 62°F | Chance Rain Showers | 15 mph NE | 36% |
| Monday Night | 47°F | Slight Chance Rain Showers | 10 to 15 mph NE | 23% |
| Tuesday | 60°F | Slight Chance Rain Showers then Partly Sunny | 10 to 15 mph NE | 23% |
| Tuesday Night | 44°F | Mostly Clear | 5 to 10 mph NE | 3% |
| Wednesday | 64°F | Sunny | 5 to 10 mph NE | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 5 mph E | 2% |
| Thursday | 66°F | Mostly Sunny | 5 mph E | 7% |
| Thursday Night | 51°F | Partly Cloudy | 5 mph E | 5% |
| Friday | 68°F | Mostly Sunny | 5 mph E | 5% |
Forecast source: National Weather Service (api.weather.gov) for Lamont (42.599, -91.640). Updated through the day.
Growing snapshot for Lamont
Last spring frost
May 4
First fall frost
Oct 1
Growing season
150 days
Hardiness zone
5a
More local growing data for Lamont: nearby ZIP 50650 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Stanley, Ia (10.6 mi from Lamont). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.