Harvey, IA Weather & Growing Conditions
Today
83°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4pm, then a chance of showers and thunderstorms. Partly sunny. High near 83, with temperatures falling to around 81 in the afternoon. Southwest wind 5 to 9 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Chance Showers And Thunderstorms | 5 to 9 mph SW | 52% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph NNW | 68% |
| Sunday | 68°F | Chance Rain Showers then Chance Showers And Thunderstorms | 7 to 12 mph NNE | 51% |
| Sunday Night | 58°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 13 mph NE | 61% |
| Monday | 62°F | Rain Showers Likely | 12 mph NE | 61% |
| Monday Night | 52°F | Rain Showers Likely | 7 to 10 mph NE | 60% |
| Tuesday | 61°F | Slight Chance Rain Showers then Partly Sunny | 9 mph NE | 22% |
| Tuesday Night | 48°F | Partly Cloudy | 3 to 7 mph NE | 3% |
| Wednesday | 65°F | Mostly Sunny | 6 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 3 mph ENE | 3% |
| Thursday | 67°F | Slight Chance Rain Showers | 5 mph E | 16% |
| Thursday Night | 56°F | Mostly Cloudy | 2 mph E | 6% |
| Friday | 68°F | Partly Sunny | 2 to 6 mph E | 6% |
| Friday Night | 57°F | Mostly Cloudy | 3 mph ESE | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harvey, IA
Last spring frost
Apr 20
First fall frost
Oct 19
Growing season
180 days
Hardiness zone
5b
Explore more for Harvey, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Knoxville, Ia (8.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.