Superior, IA Weather & Growing Conditions
Tonight
56°F
Patchy Fog
Patchy fog. Cloudy, with a low around 56. North northeast wind 10 to 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Patchy Fog | 10 to 15 mph NNE | 10% |
| Sunday | 66°F | Patchy Fog then Mostly Cloudy | 15 mph NE | 8% |
| Sunday Night | 52°F | Chance Rain Showers | 10 to 15 mph ENE | 47% |
| Monday | 57°F | Rain Showers Likely | 10 mph ENE | 60% |
| Monday Night | 47°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 53% |
| Tuesday | 61°F | Partly Sunny | 5 to 10 mph ENE | 4% |
| Tuesday Night | 44°F | Mostly Clear | 5 mph ESE | 0% |
| Wednesday | 65°F | Sunny | 5 to 10 mph SE | 3% |
| Wednesday Night | 51°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SE | 21% |
| Thursday | 67°F | Chance Rain Showers | 5 to 10 mph SSE | 37% |
| Thursday Night | 55°F | Slight Chance Rain Showers | 5 mph SE | 17% |
| Friday | 71°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph SE | 15% |
| Friday Night | 57°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph SE | 16% |
| Saturday | 70°F | Chance Rain Showers | 10 to 15 mph SSE | 32% |
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 Sep 20, 2026.