Lewis, IA Weather & Growing Conditions
Tonight
69°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 69. South wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Chance Showers And Thunderstorms | 6 to 10 mph S | 43% |
| Saturday | 80°F | Chance Showers And Thunderstorms | 8 mph NW | 40% |
| Saturday Night | 62°F | Chance Showers And Thunderstorms | 9 mph N | 34% |
| Sunday | 67°F | Chance Showers And Thunderstorms | 8 to 13 mph NNE | 50% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 10 mph NE | 48% |
| Monday | 61°F | Rain Showers Likely | 12 mph NE | 60% |
| Monday Night | 52°F | Chance Rain Showers then Mostly Cloudy | 5 to 9 mph NE | 53% |
| Tuesday | 61°F | Mostly Cloudy | 8 mph ENE | 10% |
| Tuesday Night | 48°F | Partly Cloudy | 2 to 7 mph E | 2% |
| Wednesday | 65°F | Mostly Sunny | 5 mph ESE | 4% |
| Wednesday Night | 52°F | Mostly Cloudy | 3 mph SE | 12% |
| Thursday | 66°F | Chance Rain Showers | 1 to 5 mph SE | 27% |
| Thursday Night | 55°F | Slight Chance Rain Showers | 2 mph SE | 19% |
| Friday | 67°F | Slight Chance Rain Showers | 2 to 6 mph SE | 19% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lewis, IA
Last spring frost
Apr 30
First fall frost
Oct 2
Growing season
153 days
Hardiness zone
5b
Explore more for Lewis, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Atlantic 1 Ne, Ia (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.