Glenwood, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glenwood, a city in Mills County, Iowa.
Overnight
44°F
Mostly Cloudy
Mostly cloudy. Low around 44, with temperatures rising to around 47 overnight. Northwest wind around 15 mph, with gusts as high as 24 mph.
7-day forecast for Glenwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Mostly Cloudy | 15 mph NW | 6% |
| Wednesday | 51°F | Mostly Cloudy | 12 to 15 mph WNW | 12% |
| Wednesday Night | 42°F | Mostly Cloudy then Slight Chance Rain Showers | 10 mph WNW | 21% |
| Thursday | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 13 mph NW | 18% |
| Thursday Night | 39°F | Mostly Cloudy | 6 to 9 mph NNW | 2% |
| Friday | 51°F | Mostly Sunny | 2 to 6 mph N | 3% |
| Friday Night | 33°F | Partly Cloudy | 2 mph E | 0% |
| Saturday | 55°F | Mostly Sunny | 5 mph SSW | 0% |
| Saturday Night | 37°F | Mostly Clear | 3 mph WSW | 0% |
| Sunday | 60°F | Sunny | 6 mph WSW | 0% |
| Sunday Night | 41°F | Clear | 6 mph SSW | 0% |
| Monday | 66°F | Sunny | 6 to 9 mph SW | 0% |
| Monday Night | 43°F | Mostly Clear | 6 mph WNW | 0% |
| Tuesday | 65°F | Sunny | 6 mph NNE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Glenwood (41.045, -95.741). Updated through the day.
Growing snapshot for Glenwood
Last spring frost
Apr 23
First fall frost
Oct 11
Growing season
170 days
Hardiness zone
6a
More local growing data for Glenwood: nearby ZIP 51534 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Glenwood 3Sw, Ia (3.6 mi from Glenwood). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.