Superior, IA Weather & Growing Conditions
Today
45°F
Rain Showers Likely
Rain showers likely. Cloudy, with a high near 45. West northwest wind 15 to 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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 45°F | Rain Showers Likely | 15 to 20 mph WNW | 66% |
| Tonight | 38°F | Rain Showers | 15 to 20 mph NW | 85% |
| Thursday | 45°F | Cloudy | 15 to 20 mph NNW | 6% |
| Thursday Night | 30°F | Mostly Cloudy | 5 to 15 mph N | 0% |
| Friday | 43°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Friday Night | 27°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% |
| Tuesday Night | 39°F | Partly Cloudy | 5 mph SSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Superior, IA
Last spring frost
Apr 28
First fall frost
Oct 11
Growing season
164 days
Hardiness zone
5a
Explore more for Superior, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Spirit Lake, Ia (9.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.