Harman US

Lewis, IA Weather & Growing Conditions

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

This Afternoon
81°F
Slight Chance Showers And Thunderstorms
A chance of rain showers before 4pm, then a slight chance of showers and thunderstorms. Partly sunny. High near 81, with temperatures falling to around 76 in the afternoon. North northwest wind 5 to 9 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Lewis

WhenTempForecastWindPrecip
This Afternoon 81°F Slight Chance Showers And Thunderstorms 5 to 9 mph NNW 30%
Tonight 61°F Chance Showers And Thunderstorms 7 to 10 mph N 50%
Sunday 65°F Slight Chance Drizzle then Chance Rain Showers 9 to 13 mph NNE 40%
Sunday Night 56°F Rain Showers Likely 8 to 12 mph NE 63%
Monday 59°F Rain Showers 12 mph NE 76%
Monday Night 51°F Rain Showers Likely then Mostly Cloudy 6 to 10 mph NE 65%
Tuesday 60°F Mostly Cloudy 8 mph NE 3%
Tuesday Night 46°F Partly Cloudy 2 to 6 mph ENE 2%
Wednesday 63°F Mostly Sunny 5 mph E 0%
Wednesday Night 52°F Mostly Cloudy 3 mph ESE 14%
Thursday 66°F Chance Rain Showers 3 to 7 mph SSE 34%
Thursday Night 57°F Chance Rain Showers 5 mph SE 28%
Friday 69°F Slight Chance Rain Showers 2 to 6 mph ESE 18%
Friday Night 59°F Mostly Cloudy then Chance Rain Showers 5 mph ESE 26%

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

Nearby towns & communities

All Iowa locations ›

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.