Knierim, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Knierim, a city in Calhoun County, Iowa.
Overnight
66°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy. Low around 66, with temperatures rising to around 68 overnight. South wind around 3 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Knierim
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Chance Showers And Thunderstorms | 3 mph S | 48% |
| Saturday | 76°F | Patchy Fog | 7 mph NW | 46% |
| Saturday Night | 59°F | Slight Chance Rain Showers | 9 mph N | 19% |
| Sunday | 67°F | Chance Drizzle | 12 mph NE | 36% |
| Sunday Night | 54°F | Rain Showers Likely | 9 mph ENE | 60% |
| Monday | 61°F | Rain Showers Likely | 9 mph ENE | 60% |
| Monday Night | 49°F | Chance Rain Showers then Mostly Cloudy | 3 to 7 mph ENE | 48% |
| Tuesday | 62°F | Partly Sunny | 5 mph ENE | 9% |
| Tuesday Night | 45°F | Mostly Clear | 3 mph ESE | 1% |
| Wednesday | 66°F | Sunny | 3 mph ESE | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 1 mph SE | 10% |
| Thursday | 68°F | Slight Chance Rain Showers | 3 mph SE | 19% |
| Thursday Night | 54°F | Mostly Cloudy | 1 mph SE | 10% |
| Friday | 70°F | Partly Sunny | 1 to 5 mph SE | 10% |
Forecast source: National Weather Service (api.weather.gov) for Knierim (42.456, -94.456). Updated through the day.
Growing snapshot for Knierim
Last spring frost
Apr 26
First fall frost
Oct 10
Growing season
167 days
Hardiness zone
5a
More local growing data for Knierim: nearby ZIP 50552 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Farnhamville
Jolley
Lake City
Lohrville
Lytton
Manson
Pomeroy
Rinard
Rockwell City
Somers
Twin Lakes
Climate data from the nearest NOAA station, Rockwell City, Ia (9.5 mi from Knierim). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.