Norwalk, IA Weather & Growing Conditions

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

Overnight

70°F

Chance Showers And Thunderstorms

A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Norwalk

When	Temp	Forecast	Wind	Precip
Overnight	70°F	Chance Showers And Thunderstorms	6 mph S	26%
Saturday	82°F	Chance Showers And Thunderstorms	9 mph WSW	49%
Saturday Night	62°F	Chance Showers And Thunderstorms	8 mph N	46%
Sunday	66°F	Chance Rain Showers then Slight Chance Showers And Thunderstorms	12 mph NNE	43%
Sunday Night	57°F	Showers And Thunderstorms Likely	12 mph NE	60%
Monday	61°F	Rain Showers Likely	12 mph NE	60%
Monday Night	53°F	Rain Showers Likely	7 to 10 mph NE	60%
Tuesday	60°F	Partly Sunny	9 mph NE	11%
Tuesday Night	48°F	Partly Cloudy	3 to 7 mph ENE	3%
Wednesday	64°F	Sunny	6 mph ENE	2%
Wednesday Night	53°F	Partly Cloudy	3 mph E	4%
Thursday	66°F	Slight Chance Rain Showers	5 mph ESE	21%
Thursday Night	56°F	Mostly Cloudy	3 mph ESE	8%
Friday	68°F	Partly Sunny	2 to 6 mph ESE	8%

Forecast source: National Weather Service (api.weather.gov) for Norwalk (41.484, -93.695). Updated through the day.

Growing snapshot for Norwalk

Last spring frost

Apr 18

First fall frost

Oct 20

Growing season

184 days

Hardiness zone

More local growing data for Norwalk: nearby ZIP 50211 weather · frost dates · planting calendar · Iowa frost dates

Nearby towns & communities

Ackworth Carlisle Hartford Indianola Lacona Martensdale Milo New Virginia Sandyville Spring Hill St. Marys

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Climate data from the nearest NOAA station, Des Moines Intl Ap, Ia (6.1 mi from Norwalk). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.