Cotter, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cotter, a city in Louisa County, Iowa.
Overnight
63°F
Mostly Clear
Mostly clear, with a low around 63. South wind around 5 mph.
7-day forecast for Cotter
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 19% |
| Tuesday Night | 67°F | Showers And Thunderstorms Likely | 5 mph N | 73% |
| Wednesday | 78°F | Showers And Thunderstorms Likely | 5 mph NE | 79% |
| Wednesday Night | 62°F | Showers And Thunderstorms Likely | 5 mph N | 67% |
| Thursday | 81°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 mph NE | 44% |
| Thursday Night | 62°F | Mostly Clear | 0 to 5 mph NE | 4% |
| Friday | 83°F | Mostly Sunny | 0 to 5 mph SE | 4% |
| Friday Night | 66°F | Mostly Clear | 0 to 5 mph SE | 14% |
| Saturday | 86°F | Sunny | 5 mph S | 11% |
| Saturday Night | 71°F | Mostly Clear | 5 to 10 mph S | 11% |
| Sunday | 88°F | Sunny | 10 to 15 mph S | 11% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms | 10 mph S | 30% |
| Monday | 88°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 10 to 15 mph S | 30% |
Forecast source: National Weather Service (api.weather.gov) for Cotter (41.292, -91.462). Updated through the day.
Growing snapshot for Cotter
Last spring frost
Apr 26
First fall frost
Oct 10
Growing season
167 days
Hardiness zone
5b
More local growing data for Cotter: nearby ZIP 52738 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Columbus Junction, Ia (1 mi from Cotter). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.