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Hiawatha, IA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Hiawatha, a city in Linn County, Iowa.

This Afternoon
80°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 80. South wind 5 to 10 mph. Chance of precipitation is 50%.

7-day forecast for Hiawatha

WhenTempForecastWindPrecip
This Afternoon 80°F Chance Showers And Thunderstorms 5 to 10 mph S 54%
Tonight 62°F Showers And Thunderstorms Likely 5 to 10 mph NW 71%
Sunday 67°F Chance Rain Showers 10 to 15 mph NE 53%
Sunday Night 56°F Chance Rain Showers 10 to 15 mph NE 47%
Monday 63°F Chance Rain Showers 15 mph NE 49%
Monday Night 50°F Chance Rain Showers 10 mph NE 40%
Tuesday 62°F Chance Rain Showers then Partly Sunny 10 mph NE 31%
Tuesday Night 47°F Mostly Clear 5 to 10 mph NE 5%
Wednesday 66°F Sunny 5 mph NE 0%
Wednesday Night 51°F Partly Cloudy 5 mph NE 1%
Thursday 67°F Mostly Sunny 5 mph NE 7%
Thursday Night 53°F Partly Cloudy 0 to 5 mph E 5%
Friday 69°F Mostly Sunny 5 mph E 6%
Friday Night 54°F Partly Cloudy 5 mph E 6%

Forecast source: National Weather Service (api.weather.gov) for Hiawatha (42.056, -91.690). Updated through the day.

Growing snapshot for Hiawatha

Last spring frost
Apr 28
First fall frost
Oct 12
Growing season
166 days
Hardiness zone
5a

More local growing data for Hiawatha: nearby ZIP 52233 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Cedar Rapids #1, Ia (5.1 mi from Hiawatha). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.