Norwalk, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Norwalk, a city in Warren County, Iowa.
Overnight
67°F
Mostly Cloudy
Mostly cloudy, with a low around 67. South wind around 6 mph.
7-day forecast for Norwalk
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Mostly Cloudy | 6 mph S | 4% |
| Tuesday | 84°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 37% |
| Tuesday Night | 63°F | Showers And Thunderstorms | 6 to 12 mph NNE | 88% |
| Wednesday | 73°F | Showers And Thunderstorms Likely | 7 mph NE | 62% |
| Wednesday Night | 58°F | Chance Showers And Thunderstorms | 2 to 7 mph NNE | 36% |
| Thursday | 80°F | Mostly Sunny | 5 mph ENE | 7% |
| Thursday Night | 62°F | Mostly Clear | 5 mph SE | 5% |
| Friday | 85°F | Sunny | 2 to 8 mph S | 5% |
| Friday Night | 67°F | Mostly Clear | 7 mph S | 12% |
| Saturday | 89°F | Sunny | 3 to 10 mph S | 8% |
| Saturday Night | 73°F | Mostly Clear | 9 to 13 mph SSW | 11% |
| Sunday | 90°F | Mostly Sunny | 13 mph S | 11% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms | 12 mph S | 26% |
| Monday | 90°F | Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SSW | 26% |
Forecast source: National Weather Service (api.weather.gov) for Norwalk (41.484, -93.695). Updated through the day.
Growing snapshot for Norwalk
Last spring frost
Apr 18
First fall frost
Oct 20
Growing season
184 days
Hardiness zone
5b
More local growing data for Norwalk: nearby ZIP 50211 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Ackworth
Carlisle
Hartford
Indianola
Lacona
Martensdale
Milo
New Virginia
Sandyville
Spring Hill
St. Marys
Climate data from the nearest NOAA station, Des Moines Intl Ap, Ia (6.1 mi from Norwalk). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.