Superior, IA Weather & Growing Conditions
Today
73°F
Showers And Thunderstorms
Patchy smoke before 10am, then scattered rain showers between 10am and 1pm, then showers and thunderstorms. Mostly cloudy, with a high near 73. North northwest wind 5 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Showers And Thunderstorms | 5 to 15 mph NNW | 77% |
| Tonight | 54°F | Scattered Rain Showers then Mostly Cloudy | 0 to 5 mph WNW | 50% |
| Wednesday | 75°F | Mostly Sunny | 0 to 5 mph ENE | 1% |
| Wednesday Night | 54°F | Mostly Clear | 5 mph SSE | 0% |
| Thursday | 81°F | Sunny | 5 to 10 mph SSW | 0% |
| Thursday Night | 61°F | Mostly Clear | 10 mph S | 2% |
| Friday | 84°F | Sunny | 10 to 15 mph SSW | 9% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph S | 21% |
| Saturday | 86°F | Sunny | 5 to 15 mph S | 12% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms | 15 mph ESE | 26% |
| Sunday | 85°F | Chance Showers And Thunderstorms then Mostly Sunny | 10 mph ESE | 26% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph E | 30% |
| Monday | 84°F | Chance Showers And Thunderstorms then Partly Sunny | 15 mph E | 30% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph NE | 29% |
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 Aug 4, 2026.