Ottosen, IA Weather & Growing Conditions
Tonight
65°F
Patchy Fog
Patchy fog and showers and thunderstorms likely before midnight, then patchy fog and a chance of showers and thunderstorms between midnight and 4am, then patchy fog and a chance of showers and thunderstorms. Cloudy. Low around 65, with temperatures rising to around 67 overnight. South southeast wind 7 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Patchy Fog | 7 to 10 mph SSE | 61% |
| Saturday | 73°F | Patchy Fog | 6 to 9 mph NNW | 45% |
| Saturday Night | 58°F | Slight Chance Rain Showers then Cloudy | 10 to 14 mph NNE | 23% |
| Sunday | 67°F | Slight Chance Rain Showers | 15 mph NE | 21% |
| Sunday Night | 53°F | Chance Rain Showers | 13 mph ENE | 38% |
| Monday | 61°F | Rain Showers Likely | 9 to 13 mph ENE | 55% |
| Monday Night | 48°F | Chance Rain Showers | 6 to 9 mph ENE | 51% |
| Tuesday | 61°F | Partly Sunny | 8 mph ENE | 11% |
| Tuesday Night | 45°F | Partly Cloudy | 2 to 6 mph E | 1% |
| Wednesday | 65°F | Mostly Sunny | 5 mph ESE | 3% |
| Wednesday Night | 49°F | Partly Cloudy | 2 mph SE | 12% |
| Thursday | 67°F | Slight Chance Rain Showers | 5 mph SSE | 21% |
| Thursday Night | 52°F | Mostly Cloudy | 2 mph SSE | 9% |
| Friday | 69°F | Partly Sunny | 2 to 6 mph SE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ottosen, IA
Last spring frost
Apr 30
First fall frost
Oct 6
Growing season
160 days
Hardiness zone
5a
Explore more for Ottosen, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Algona, Ia (13.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.