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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
77°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny. High near 77, with temperatures falling to around 75 in the afternoon. Southeast wind around 5 mph. Chance of precipitation is 70%.

7-day forecast for Hiawatha

WhenTempForecastWindPrecip
This Afternoon 77°F Showers And Thunderstorms Likely 5 mph SE 67%
Tonight 62°F Showers And Thunderstorms 5 to 10 mph NE 75%
Sunday 66°F Chance Rain Showers 10 to 15 mph NE 49%
Sunday Night 55°F Chance Rain Showers 10 to 15 mph NE 47%
Monday 62°F Rain Showers Likely 10 to 15 mph NE 70%
Monday Night 51°F Rain Showers Likely 10 mph NE 70%
Tuesday 61°F Chance Rain Showers 10 mph NE 45%
Tuesday Night 48°F Partly Cloudy 5 to 10 mph NE 7%
Wednesday 64°F Mostly Sunny 5 mph NE 2%
Wednesday Night 51°F Partly Cloudy 5 mph NE 2%
Thursday 66°F Partly Sunny 5 mph E 10%
Thursday Night 55°F Slight Chance Rain Showers 0 mph 21%
Friday 69°F Slight Chance Rain Showers then Partly Sunny 5 mph E 16%
Friday Night 56°F Partly Cloudy 0 to 5 mph E 13%

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 20, 2026.