Lamont, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lamont, a city in Buchanan County, Iowa.
This Afternoon
67°F
Showers And Thunderstorms
Rain showers before 3pm, then showers and thunderstorms. Cloudy. High near 67, with temperatures falling to around 64 in the afternoon. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
7-day forecast for Lamont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Showers And Thunderstorms | 10 to 15 mph S | 81% |
| Tonight | 49°F | Showers And Thunderstorms | 10 mph S | 83% |
| Wednesday | 52°F | Rain Showers Likely | 10 to 15 mph SW | 56% |
| Wednesday Night | 43°F | Chance Rain Showers | 10 to 15 mph SW | 49% |
| Thursday | 50°F | Rain Showers Likely | 10 mph NW | 73% |
| Thursday Night | 38°F | Mostly Cloudy | 10 mph N | 13% |
| Friday | 48°F | Partly Sunny | 5 to 10 mph N | 4% |
| Friday Night | 31°F | Partly Cloudy | 0 to 5 mph NW | 1% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph W | 2% |
| Saturday Night | 35°F | Mostly Clear | 5 mph W | 4% |
| Sunday | 57°F | Sunny | 5 to 10 mph W | 10% |
| Sunday Night | 36°F | Mostly Clear | 5 mph SW | 2% |
| Monday | 59°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 0% |
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 Nov 3, 2026.