Anamosa, IA Weather & Growing Conditions
This Afternoon
67°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 67, with temperatures falling to around 65 in the afternoon. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Showers And Thunderstorms | 15 mph S | 87% |
| Tonight | 50°F | Showers And Thunderstorms Likely | 10 to 15 mph S | 64% |
| Wednesday | 54°F | Chance Rain Showers | 15 mph SW | 46% |
| Wednesday Night | 44°F | Chance Rain Showers | 10 to 15 mph SW | 31% |
| Thursday | 52°F | Rain Showers Likely | 5 to 10 mph W | 63% |
| Thursday Night | 40°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph N | 20% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph N | 5% |
| Friday Night | 32°F | Partly Cloudy | 0 mph | 1% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 35°F | Mostly Clear | 0 to 5 mph W | 5% |
| Sunday | 58°F | Sunny | 5 mph W | 10% |
| Sunday Night | 36°F | Mostly Clear | 0 to 5 mph W | 2% |
| Monday | 62°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Anamosa, IA
Last spring frost
May 1
First fall frost
Oct 4
Growing season
154 days
Hardiness zone
5a
Explore more for Anamosa, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Anamosa 1 Wnw, Ia (0.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.