Twin Lakes, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Twin Lakes, a community in Calhoun County, Iowa.
Overnight
42°F
Chance Rain Showers
A chance of rain showers. Cloudy, with a low around 42. Northwest wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Twin Lakes
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Chance Rain Showers | 15 mph NW | 38% |
| Wednesday | 49°F | Chance Rain Showers | 12 to 15 mph WNW | 38% |
| Wednesday Night | 42°F | Chance Rain Showers | 12 mph WNW | 46% |
| Thursday | 50°F | Chance Rain Showers then Mostly Cloudy | 8 to 12 mph NNW | 31% |
| Thursday Night | 36°F | Mostly Cloudy | 3 to 7 mph N | 0% |
| Friday | 49°F | Mostly Sunny | 0 to 3 mph N | 1% |
| Friday Night | 29°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 3 mph SSW | 0% |
| Saturday Night | 35°F | Mostly Clear | 2 mph W | 0% |
| Sunday | 58°F | Sunny | 3 mph W | 0% |
| Sunday Night | 37°F | Mostly Clear | 3 mph SW | 0% |
| Monday | 64°F | Sunny | 3 to 7 mph WSW | 0% |
| Monday Night | 40°F | Mostly Clear | 3 mph WNW | 0% |
| Tuesday | 62°F | Mostly Sunny | 2 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Twin Lakes (42.481, -94.630). Updated through the day.
Growing snapshot for Twin Lakes
Last spring frost
Apr 26
First fall frost
Oct 10
Growing season
167 days
Hardiness zone
5a
More local growing data for Twin Lakes: nearby ZIP 50579 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rockwell City, Ia (0.3 mi from Twin Lakes). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.