Harman US

Harvey, IA Weather & Growing Conditions

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

This Afternoon
84°F
Slight Chance Showers And Thunderstorms
A slight chance of rain showers between 2pm and 4pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 84. Southwest wind 6 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Harvey

WhenTempForecastWindPrecip
This Afternoon 84°F Slight Chance Showers And Thunderstorms 6 to 10 mph SW 21%
Tonight 64°F Showers And Thunderstorms Likely 6 mph NNW 79%
Sunday 66°F Chance Rain Showers then Chance Drizzle 7 to 12 mph NNE 44%
Sunday Night 58°F Rain Showers Likely 12 mph ENE 59%
Monday 61°F Rain Showers 12 mph NE 84%
Monday Night 53°F Rain Showers Likely 7 to 10 mph NE 69%
Tuesday 60°F Slight Chance Rain Showers 9 mph NE 18%
Tuesday Night 49°F Partly Cloudy 3 to 8 mph NE 5%
Wednesday 63°F Mostly Sunny 6 mph NE 1%
Wednesday Night 52°F Partly Cloudy 3 mph E 2%
Thursday 66°F Slight Chance Rain Showers 3 mph ESE 17%
Thursday Night 57°F Slight Chance Rain Showers 2 mph ESE 23%
Friday 69°F Slight Chance Rain Showers 1 to 5 mph E 23%
Friday Night 58°F Mostly Cloudy 3 mph E 7%

Forecast source: National Weather Service (api.weather.gov) for Harvey (41.318, -92.923). Updated through the day.

Growing snapshot for Harvey

Last spring frost
Apr 20
First fall frost
Oct 19
Growing season
180 days
Hardiness zone
5b

More local growing data for Harvey: nearby ZIP 50119 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Knoxville, Ia (8.4 mi from Harvey). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.