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Monroe, IA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Monroe, a city in Jasper County, Iowa.

Overnight
70°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South southwest wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Monroe

WhenTempForecastWindPrecip
Overnight 70°F Chance Showers And Thunderstorms 5 mph SSW 39%
Saturday 82°F Chance Showers And Thunderstorms 5 to 9 mph SW 52%
Saturday Night 63°F Chance Showers And Thunderstorms 6 to 9 mph NNW 52%
Sunday 67°F Chance Rain Showers then Slight Chance Showers And Thunderstorms 9 to 13 mph NNE 48%
Sunday Night 58°F Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 14 mph NE 59%
Monday 62°F Rain Showers Likely 13 mph NE 60%
Monday Night 52°F Rain Showers Likely 12 mph NE 60%
Tuesday 61°F Slight Chance Rain Showers then Partly Sunny 10 mph NE 15%
Tuesday Night 47°F Partly Cloudy 5 to 8 mph ENE 2%
Wednesday 65°F Sunny 6 mph ENE 1%
Wednesday Night 52°F Partly Cloudy 5 mph E 4%
Thursday 66°F Slight Chance Rain Showers 5 mph E 19%
Thursday Night 56°F Mostly Cloudy 3 mph E 8%
Friday 68°F Partly Sunny 6 mph E 8%

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

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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 Sep 19, 2026.