Monroe, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monroe, a city in Jasper County, Iowa.
Overnight
46°F
Slight Chance Rain Showers
A slight chance of rain showers after 5am. Cloudy, with a low around 46. West wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
7-day forecast for Monroe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Slight Chance Rain Showers | 14 mph W | 17% |
| Wednesday | 52°F | Slight Chance Rain Showers then Cloudy | 16 mph W | 19% |
| Wednesday Night | 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% |
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.