Cotter, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cotter, a city in Louisa County, Iowa.
Overnight
69°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms. Mostly cloudy. Low around 69, with temperatures rising to around 71 overnight. South wind 5 to 10 mph. Chance of precipitation is 30%.
7-day forecast for Cotter
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Patchy Fog | 5 to 10 mph S | 34% |
| Saturday | 83°F | Patchy Fog | 5 to 10 mph S | 55% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph NW | 85% |
| Sunday | 71°F | Showers And Thunderstorms | 10 to 15 mph NE | 76% |
| Sunday Night | 58°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 to 15 mph NE | 61% |
| Monday | 64°F | Showers And Thunderstorms Likely | 15 mph NE | 61% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 15 mph NE | 51% |
| Tuesday | 62°F | Chance Rain Showers | 10 to 15 mph NE | 29% |
| Tuesday Night | 48°F | Partly Cloudy | 5 to 10 mph NE | 6% |
| Wednesday | 67°F | Sunny | 5 to 10 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Thursday | 69°F | Mostly Sunny | 5 mph NE | 6% |
| Thursday Night | 55°F | Partly Cloudy | 0 to 5 mph NE | 5% |
| Friday | 72°F | Mostly Sunny | 5 mph E | 5% |
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 Sep 19, 2026.