Arnolds Park, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arnolds Park, a city in Dickinson County, Iowa.
Overnight
40°F
Rain Showers Likely
Rain showers likely. Cloudy, with a low around 40. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Arnolds Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 40°F | Rain Showers Likely | 15 mph NW | 57% |
| Wednesday | 46°F | Rain Showers Likely | 15 mph WNW | 59% |
| Wednesday Night | 38°F | Chance Rain Showers | 15 mph NW | 54% |
| Thursday | 45°F | Mostly Cloudy | 15 mph NNW | 8% |
| Thursday Night | 32°F | Mostly Cloudy | 5 to 10 mph N | 0% |
| Friday | 45°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Friday Night | 28°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 49°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 54°F | Sunny | 5 to 10 mph W | 0% |
| Sunday Night | 36°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Monday | 60°F | Sunny | 10 mph WSW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 mph NW | 0% |
| Tuesday | 57°F | Mostly Sunny | 5 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Arnolds Park (43.360, -95.129). Updated through the day.
Growing snapshot for Arnolds Park
Last spring frost
May 1
First fall frost
Oct 6
Growing season
158 days
Hardiness zone
5a
More local growing data for Arnolds Park: nearby ZIP 51331 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Milford 4 Nw, Ia (3.1 mi from Arnolds Park). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.