Superior, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Superior, a city in Dickinson County, Iowa.
Overnight
41°F
Rain Showers Likely
Rain showers likely. Cloudy, with a low around 41. Northwest wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Superior
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 41°F | Rain Showers Likely | 20 mph NW | 66% |
| Wednesday | 45°F | Rain Showers Likely | 15 to 20 mph WNW | 62% |
| Wednesday Night | 38°F | Rain Showers Likely | 15 to 20 mph NW | 60% |
| Thursday | 44°F | Mostly Cloudy | 15 mph NNW | 9% |
| Thursday Night | 32°F | Mostly Cloudy | 5 to 15 mph N | 1% |
| Friday | 44°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Friday Night | 28°F | Partly Cloudy | 0 to 5 mph SSE | 0% |
| Saturday | 48°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 to 10 mph W | 0% |
| Sunday | 54°F | Sunny | 5 to 10 mph W | 0% |
| Sunday Night | 37°F | Clear | 5 to 10 mph SW | 0% |
| Monday | 59°F | Sunny | 10 mph W | 0% |
| Monday Night | 38°F | Mostly Clear | 5 to 10 mph NW | 0% |
| Tuesday | 56°F | Mostly Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Superior (43.434, -94.947). Updated through the day.
Growing snapshot for Superior
Last spring frost
Apr 28
First fall frost
Oct 11
Growing season
164 days
Hardiness zone
5a
More local growing data for Superior: nearby ZIP 51363 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Spirit Lake, Ia (9.7 mi from Superior). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.