Denmark, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Denmark, a community in Lee County, Iowa.
Overnight
51°F
Mostly Cloudy
Mostly cloudy, with a low around 51. Southwest wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Denmark
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Mostly Cloudy | 10 mph SW | 6% |
| Wednesday | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph W | 18% |
| Wednesday Night | 45°F | Mostly Cloudy | 10 mph SW | 4% |
| Thursday | 55°F | Mostly Cloudy then Chance Rain Showers | 5 to 10 mph W | 44% |
| Thursday Night | 43°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 21% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph N | 6% |
| Friday Night | 32°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 34°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 58°F | Sunny | 5 mph W | 1% |
| Sunday Night | 36°F | Clear | 0 mph | 0% |
| Monday | 64°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 41°F | Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 0 to 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Denmark (40.734, -91.338). Updated through the day.
Growing snapshot for Denmark
Last spring frost
Apr 12
First fall frost
Oct 25
Growing season
194 days
Hardiness zone
6a
More local growing data for Denmark: nearby ZIP 52624 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Argyle
Donnellson
Farmington
Fort Madison
Franklin
Hillsboro
Houghton
Keokuk
Montrose
Mooar
Oak Hills
Sandusky
St. Paul
West Point
Wever
Climate data from the nearest NOAA station, Ft Madison, Ia (7.8 mi from Denmark). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.