Harvey, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harvey, a city in Marion County, Iowa.
Tonight
48°F
Cloudy then Slight Chance Rain Showers
A slight chance of rain showers between 1am and 2am. Cloudy, with a low around 48. West southwest wind 8 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Harvey
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Cloudy then Slight Chance Rain Showers | 8 to 12 mph WSW | 16% |
| Wednesday | 54°F | Mostly Cloudy then Slight Chance Rain Showers | 12 to 15 mph W | 21% |
| Wednesday Night | 44°F | Mostly Cloudy | 10 mph WSW | 8% |
| Thursday | 54°F | Chance Rain Showers | 8 to 12 mph WNW | 47% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 7 mph NNW | 19% |
| Friday | 53°F | Partly Sunny | 5 to 8 mph N | 5% |
| Friday Night | 35°F | Partly Cloudy | 2 mph N | 0% |
| Saturday | 56°F | Partly Sunny | 0 to 5 mph WSW | 2% |
| Saturday Night | 37°F | Mostly Clear | 3 mph W | 4% |
| Sunday | 62°F | Sunny | 6 mph W | 5% |
| Sunday Night | 39°F | Mostly Clear | 5 mph WSW | 2% |
| Monday | 66°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 6 mph W | 0% |
| Tuesday | 65°F | Mostly Sunny | 6 mph NW | 0% |
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
Nearby towns & communities
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 Nov 4, 2026.