Harman US

Marble Rock, IA Weather & Growing Conditions

This Afternoon
72°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 3pm, then a chance of showers and thunderstorms. Cloudy. High near 72, with temperatures falling to around 68 in the afternoon. Northwest wind 3 to 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 72°F Slight Chance Showers And Thunderstorms 3 to 8 mph NW 34%
Tonight 57°F Chance Showers And Thunderstorms 8 to 12 mph N 31%
Sunday 66°F Cloudy 14 mph NE 14%
Sunday Night 50°F Chance Rain Showers 12 mph NE 38%
Monday 62°F Chance Rain Showers 13 mph NE 41%
Monday Night 46°F Chance Rain Showers 5 to 9 mph NE 30%
Tuesday 61°F Mostly Sunny 5 to 8 mph NE 13%
Tuesday Night 43°F Partly Cloudy 2 to 6 mph E 2%
Wednesday 65°F Sunny 5 mph E 1%
Wednesday Night 47°F Partly Cloudy 3 mph E 5%
Thursday 66°F Partly Sunny 1 to 5 mph SE 10%
Thursday Night 50°F Partly Cloudy 2 mph E 4%
Friday 69°F Mostly Sunny 1 to 6 mph SE 4%
Friday Night 51°F Partly Cloudy 3 mph SE 11%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Marble Rock, IA

Last spring frost
Apr 30
First fall frost
Oct 6
Growing season
157 days
Hardiness zone
5a

Explore more for Marble Rock, IA: full frost dates · planting calendar · Iowa frost dates

Climate data from the nearest NOAA station, Charles City, Ia (12.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.