Monroe, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monroe, a city in Jasper County, Iowa.
Today
52°F
Cloudy
Cloudy, with a high near 52. West wind around 16 mph, with gusts as high as 24 mph.
7-day forecast for Monroe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 52°F | Cloudy | 16 mph W | 11% |
| Tonight | 45°F | Cloudy then Chance Rain Showers | 13 mph W | 26% |
| Thursday | 54°F | Chance Rain Showers | 13 mph WNW | 30% |
| Thursday Night | 41°F | Mostly Cloudy | 9 mph N | 9% |
| Friday | 50°F | Mostly Sunny | 5 to 8 mph N | 4% |
| Friday Night | 31°F | Partly Cloudy | 0 to 3 mph NNE | 1% |
| Saturday | 53°F | Mostly Sunny | 1 to 5 mph WSW | 0% |
| Saturday Night | 36°F | Mostly Clear | 5 mph WSW | 1% |
| Sunday | 59°F | Sunny | 7 mph W | 1% |
| Sunday Night | 37°F | Clear | 5 mph SW | 0% |
| Monday | 65°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 41°F | Clear | 6 mph W | 0% |
| Tuesday | 65°F | Sunny | 5 mph NNW | 0% |
| Tuesday Night | 43°F | Partly Cloudy | 3 mph ENE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Monroe (41.519, -93.104). Updated through the day.
Growing snapshot for Monroe
Last spring frost
Apr 21
First fall frost
Oct 15
Growing season
174 days
Hardiness zone
5b
More local growing data for Monroe: nearby ZIP 50170 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Baxter
Colfax
Kellogg
Lambs Grove
Lynnville
Mingo
Newton
Oakland Acres
Prairie City
Reasnor
Sully
Valeria
Climate data from the nearest NOAA station, Des Moines 17 E, Ia (8.9 mi from Monroe). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.