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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
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 Sep 19, 2026.