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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
Nearby towns & communities
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.