Monona, IA Weather & Growing Conditions
Today
52°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 52, with temperatures falling to around 49 in the afternoon. Southwest wind around 15 mph, with gusts as high as 26 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 | 52°F | Chance Rain Showers | 15 mph SW | 33% |
| Tonight | 45°F | Rain Showers | 12 to 15 mph SW | 79% |
| Thursday | 49°F | Chance Rain Showers | 10 to 14 mph NW | 49% |
| Thursday Night | 37°F | Mostly Cloudy | 7 to 12 mph N | 12% |
| Friday | 47°F | Mostly Sunny | 3 to 7 mph N | 0% |
| Friday Night | 28°F | Mostly Clear | 2 mph N | 0% |
| Saturday | 50°F | Sunny | 0 to 5 mph W | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 1% |
| Sunday | 56°F | Sunny | 7 mph W | 3% |
| Sunday Night | 35°F | Mostly Clear | 3 mph SW | 0% |
| Monday | 60°F | Sunny | 2 to 9 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 2 to 6 mph W | 0% |
| Tuesday | 59°F | Sunny | 3 mph NW | 0% |
| Tuesday Night | 39°F | Partly Cloudy | 1 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Monona, IA
Last spring frost
May 1
First fall frost
Oct 3
Growing season
153 days
Hardiness zone
5a
Explore more for Monona, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Postville, Ia (9.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.