Anamosa, IA Weather & Growing Conditions
Overnight
50°F
Mostly Cloudy
Mostly cloudy. Low around 50, with temperatures rising to around 53 overnight. Southwest wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Cloudy | 10 mph SW | 12% |
| Wednesday | 52°F | Chance Rain Showers | 10 mph SW | 37% |
| Wednesday Night | 44°F | Chance Rain Showers | 10 mph SW | 27% |
| Thursday | 54°F | Chance Rain Showers | 10 mph NW | 43% |
| Thursday Night | 39°F | Mostly Cloudy | 5 mph N | 9% |
| Friday | 49°F | Mostly Sunny | 5 mph N | 1% |
| Friday Night | 29°F | Mostly Clear | 0 mph | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph NW | 1% |
| Saturday Night | 34°F | Mostly Clear | 0 to 5 mph W | 2% |
| Sunday | 56°F | Sunny | 5 mph W | 2% |
| Sunday Night | 35°F | Clear | 0 to 5 mph W | 0% |
| Monday | 62°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 0 to 5 mph W | 0% |
| Tuesday | 62°F | Sunny | 0 to 5 mph NW | 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.