Lamont, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lamont, a city in Buchanan County, Iowa.
Today
79°F
Mostly Cloudy then Chance Showers And Thunderstorms
A slight chance of rain showers between noon and 1pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 79, with temperatures falling to around 76 in the afternoon. West wind 5 to 10 mph. Chance of precipitation is 50%.
7-day forecast for Lamont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph W | 50% |
| Tonight | 61°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph N | 68% |
| Wednesday | 72°F | Chance Showers And Thunderstorms | 5 mph N | 40% |
| Wednesday Night | 55°F | Slight Chance Rain Showers | 5 mph N | 21% |
| Thursday | 77°F | Sunny | 0 to 5 mph E | 6% |
| Thursday Night | 59°F | Mostly Clear | 0 to 5 mph S | 1% |
| Friday | 80°F | Sunny | 0 to 10 mph S | 4% |
| Friday Night | 64°F | Mostly Clear | 5 mph S | 11% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph S | 12% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 10 to 15 mph S | 25% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 10 mph S | 25% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 10 mph S | 40% |
| Monday | 83°F | Chance Showers And Thunderstorms | 10 mph S | 40% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 10 mph NE | 38% |
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 Aug 4, 2026.