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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
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.