Olin, IA Weather & Growing Conditions
Overnight
65°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4am, then patchy fog and showers and thunderstorms likely. Cloudy, with a low around 65. East wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Chance Showers And Thunderstorms | 5 mph E | 57% |
| Saturday | 80°F | Patchy Fog | 5 to 10 mph S | 92% |
| Saturday Night | 61°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph NW | 73% |
| Sunday | 68°F | Rain Showers Likely | 10 mph NE | 58% |
| Sunday Night | 55°F | Chance Rain Showers | 5 to 10 mph NE | 39% |
| Monday | 63°F | Chance Rain Showers | 10 mph NE | 51% |
| Monday Night | 49°F | Chance Rain Showers | 5 to 10 mph NE | 44% |
| Tuesday | 62°F | Chance Rain Showers then Partly Sunny | 5 to 10 mph NE | 33% |
| Tuesday Night | 46°F | Mostly Clear | 0 to 5 mph NE | 6% |
| Wednesday | 66°F | Sunny | 5 mph NE | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 0 mph | 1% |
| Thursday | 67°F | Mostly Sunny | 0 to 5 mph NE | 7% |
| Thursday Night | 52°F | Partly Cloudy | 0 mph | 5% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph E | 5% |
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 Sep 19, 2026.