Harvey, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harvey, a city in Marion County, Iowa.
Today
87°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after noon. Partly sunny. High near 87, with temperatures falling to around 85 in the afternoon. West wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Harvey
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 7 mph W | 35% |
| Tonight | 64°F | Showers And Thunderstorms | 6 to 9 mph NNE | 92% |
| Wednesday | 75°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 8 mph NNE | 91% |
| Wednesday Night | 59°F | Showers And Thunderstorms Likely | 2 to 7 mph NNE | 56% |
| Thursday | 81°F | Slight Chance Rain Showers then Mostly Sunny | 5 mph ENE | 17% |
| Thursday Night | 61°F | Mostly Clear | 3 mph ESE | 3% |
| Friday | 86°F | Sunny | 2 to 6 mph SSE | 6% |
| Friday Night | 66°F | Mostly Clear | 5 mph SSE | 14% |
| Saturday | 90°F | Sunny | 3 to 8 mph S | 11% |
| Saturday Night | 72°F | Mostly Clear | 10 mph SSW | 13% |
| Sunday | 91°F | Mostly Sunny | 12 mph SSW | 13% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms | 10 mph S | 28% |
| Monday | 91°F | Chance Showers And Thunderstorms then Mostly Sunny | 9 to 13 mph S | 28% |
| Monday Night | 72°F | Chance Showers And Thunderstorms | 13 mph SE | 27% |
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 Aug 4, 2026.