Olin, IA Weather & Growing Conditions
Tonight
50°F
Mostly Cloudy
Mostly cloudy. Low around 50, with temperatures rising to around 53 overnight. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Mostly Cloudy | 5 mph S | 11% |
| Wednesday | 55°F | Chance Rain Showers | 5 to 10 mph SW | 39% |
| Wednesday Night | 45°F | Chance Rain Showers | 5 to 10 mph SW | 26% |
| Thursday | 54°F | Chance Rain Showers | 5 mph W | 47% |
| Thursday Night | 39°F | Mostly Cloudy | 5 mph N | 11% |
| Friday | 49°F | Partly Sunny | 0 to 5 mph N | 2% |
| Friday Night | 30°F | Mostly Clear | 0 mph | 0% |
| Saturday | 51°F | Sunny | 0 mph | 1% |
| Saturday Night | 34°F | Mostly Clear | 0 mph | 2% |
| Sunday | 55°F | Sunny | 0 to 5 mph W | 3% |
| Sunday Night | 35°F | Mostly Clear | 0 mph | 0% |
| Monday | 62°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 0 mph | 0% |
| Tuesday | 62°F | Sunny | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Olin, IA
Last spring frost
Apr 27
First fall frost
Oct 13
Growing season
170 days
Hardiness zone
5a
Explore more for Olin, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Anamosa 3 Ssw, Ia (9.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.