Parnell, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Parnell, a city in Iowa County, Iowa.
Overnight
68°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4am, then patchy fog and a chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Southeast wind 5 to 10 mph. Chance of precipitation is 50%.
7-day forecast for Parnell
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph SE | 53% |
| Saturday | 81°F | Patchy Fog | 5 to 10 mph S | 64% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph NW | 79% |
| Sunday | 68°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 10 to 15 mph NE | 74% |
| Sunday Night | 57°F | Rain Showers Likely | 15 mph NE | 57% |
| Monday | 62°F | Rain Showers Likely | 15 mph NE | 57% |
| Monday Night | 51°F | Chance Rain Showers | 10 to 15 mph NE | 43% |
| Tuesday | 60°F | Chance Rain Showers then Partly Sunny | 10 mph NE | 27% |
| Tuesday Night | 46°F | Partly Cloudy | 5 to 10 mph NE | 5% |
| Wednesday | 65°F | Sunny | 5 mph NE | 0% |
| Wednesday Night | 51°F | Partly Cloudy | 5 mph NE | 1% |
| Thursday | 66°F | Partly Sunny | 5 mph E | 7% |
| Thursday Night | 54°F | Partly Cloudy | 5 mph E | 6% |
| Friday | 69°F | Mostly Sunny | 5 mph E | 7% |
Forecast source: National Weather Service (api.weather.gov) for Parnell (41.584, -92.004). Updated through the day.
Growing snapshot for Parnell
Last spring frost
Apr 28
First fall frost
Oct 9
Growing season
164 days
Hardiness zone
5b
More local growing data for Parnell: nearby ZIP 52361 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Amana
Conroy
East Amana
High Amana
Homestead
Ladora
Marengo
Middle Amana
Millersburg
North English
South Amana
Victor
West Amana
Williamsburg
Climate data from the nearest NOAA station, Williamsburg 1E, Ia (1.9 mi from Parnell). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.