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
60°F
Widespread Fog
Widespread fog and a slight chance of showers and thunderstorms. Cloudy. Low around 60, with temperatures rising to around 64 overnight. North northeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Arnolds Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Widespread Fog | 5 mph NNE | 21% |
| Saturday | 68°F | Widespread Fog | 5 to 10 mph N | 32% |
| Saturday Night | 55°F | Patchy Fog | 10 to 15 mph NNE | 16% |
| Sunday | 66°F | Cloudy | 15 mph NE | 11% |
| Sunday Night | 51°F | Chance Rain Showers | 10 to 15 mph ENE | 35% |
| Monday | 61°F | Chance Rain Showers | 10 mph ENE | 45% |
| Monday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph ENE | 26% |
| Tuesday | 62°F | Mostly Sunny | 5 to 10 mph E | 4% |
| Tuesday Night | 43°F | Mostly Clear | 5 mph ESE | 1% |
| Wednesday | 65°F | Sunny | 5 to 10 mph SE | 2% |
| Wednesday Night | 49°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SE | 15% |
| Thursday | 67°F | Slight Chance Rain Showers | 5 to 10 mph SSE | 19% |
| Thursday Night | 52°F | Mostly Cloudy | 5 mph SE | 11% |
| Friday | 70°F | Partly Sunny | 5 to 10 mph SE | 11% |
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 Sep 19, 2026.