Glenwood, IA Weather & Growing Conditions
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
| 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). Updated through the day.
Growing snapshot for Glenwood, IA
Last spring frost
Apr 23
First fall frost
Oct 11
Growing season
170 days
Hardiness zone
6a
Explore more for Glenwood, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Glenwood 3Sw, Ia (3.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.