Norwalk, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Norwalk, a city in Warren County, Iowa.
Tonight
47°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy. Low around 47, with temperatures rising to around 49 overnight. West northwest wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Norwalk
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Slight Chance Rain Showers | 14 mph WNW | 23% |
| Wednesday | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 13 to 17 mph W | 15% |
| Wednesday Night | 44°F | Mostly Cloudy then Slight Chance Rain Showers | 13 mph W | 24% |
| Thursday | 52°F | Rain Showers Likely | 13 mph NW | 55% |
| Thursday Night | 41°F | Mostly Cloudy | 9 mph NNW | 10% |
| Friday | 52°F | Partly Sunny | 5 to 8 mph N | 3% |
| Friday Night | 35°F | Partly Cloudy | 3 mph N | 0% |
| Saturday | 57°F | Mostly Sunny | 1 to 5 mph WSW | 1% |
| Saturday Night | 38°F | Mostly Clear | 5 mph W | 4% |
| Sunday | 63°F | Sunny | 7 mph W | 6% |
| Sunday Night | 40°F | Mostly Clear | 6 mph SW | 1% |
| Monday | 66°F | Sunny | 6 to 12 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 7 mph WNW | 0% |
| Tuesday | 64°F | Sunny | 6 mph NW | 0% |
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 Nov 4, 2026.