Glenwood, IA Weather & Growing Conditions
Today
81°F
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms. Mostly sunny. High near 81, with temperatures falling to around 78 in the afternoon. Northwest wind 5 to 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 8 mph NW | 25% |
| Tonight | 63°F | Chance Showers And Thunderstorms | 10 mph N | 52% |
| Sunday | 65°F | Chance Showers And Thunderstorms | 10 mph NNE | 37% |
| Sunday Night | 57°F | Chance Rain Showers | 10 mph NE | 37% |
| Monday | 60°F | Rain Showers Likely | 10 mph NE | 57% |
| Monday Night | 52°F | Chance Rain Showers then Mostly Cloudy | 6 to 9 mph NE | 39% |
| Tuesday | 60°F | Partly Sunny | 8 mph ENE | 3% |
| Tuesday Night | 48°F | Partly Cloudy | 6 mph E | 2% |
| Wednesday | 64°F | Mostly Sunny | 6 mph ESE | 3% |
| Wednesday Night | 53°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SE | 23% |
| Thursday | 65°F | Chance Rain Showers | 6 mph SE | 31% |
| Thursday Night | 57°F | Chance Showers And Thunderstorms | 5 mph ESE | 26% |
| Friday | 66°F | Chance Showers And Thunderstorms | 7 mph SE | 26% |
| Friday Night | 58°F | Mostly Cloudy then Slight Chance Rain Showers | 7 mph SE | 15% |
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 Sep 19, 2026.