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Lewis, IA Weather & Growing Conditions

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

Today
80°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms. Partly sunny. High near 80, with temperatures falling to around 77 in the afternoon. Northwest wind around 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Lewis

WhenTempForecastWindPrecip
Today 80°F Chance Showers And Thunderstorms 8 mph NW 26%
Tonight 61°F Chance Showers And Thunderstorms 9 mph N 34%
Sunday 66°F Chance Showers And Thunderstorms 8 to 13 mph NNE 40%
Sunday Night 56°F Chance Showers And Thunderstorms 8 to 12 mph NE 39%
Monday 60°F Rain Showers Likely 12 mph NE 56%
Monday Night 51°F Rain Showers Likely then Mostly Cloudy 5 to 10 mph NE 56%
Tuesday 60°F Partly Sunny 8 mph ENE 4%
Tuesday Night 46°F Partly Cloudy 2 to 6 mph E 2%
Wednesday 64°F Mostly Sunny 5 mph ESE 1%
Wednesday Night 51°F Partly Cloudy then Slight Chance Rain Showers 3 mph ESE 15%
Thursday 66°F Chance Rain Showers 2 to 6 mph SE 26%
Thursday Night 55°F Mostly Cloudy then Slight Chance Rain Showers 5 mph ESE 22%
Friday 67°F Slight Chance Rain Showers 3 to 7 mph ESE 22%
Friday Night 56°F Mostly Cloudy then Slight Chance Rain Showers 6 mph SE 16%

Forecast source: National Weather Service (api.weather.gov) for Lewis (41.306, -95.084). Updated through the day.

Growing snapshot for Lewis

Last spring frost
Apr 30
First fall frost
Oct 2
Growing season
153 days
Hardiness zone
5b

More local growing data for Lewis: nearby ZIP 51544 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Atlantic 1 Ne, Ia (8.8 mi from Lewis). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.