Anamosa, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Anamosa, a city in Jones County, Iowa.
Tonight
65°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am, then showers and thunderstorms. Mostly cloudy. Low around 65, with temperatures rising to around 67 overnight. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Anamosa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Chance Showers And Thunderstorms | 5 to 10 mph SE | 86% |
| Saturday | 81°F | Showers And Thunderstorms | 5 mph S | 79% |
| Saturday Night | 62°F | Showers And Thunderstorms | 5 mph N | 76% |
| Sunday | 68°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 64% |
| Sunday Night | 55°F | Rain Showers Likely | 10 to 15 mph NE | 56% |
| Monday | 64°F | Rain Showers Likely | 10 to 15 mph NE | 55% |
| Monday Night | 50°F | Rain Showers Likely | 10 to 15 mph NE | 55% |
| Tuesday | 62°F | Chance Rain Showers | 5 to 10 mph NE | 39% |
| Tuesday Night | 47°F | Partly Cloudy | 5 mph NE | 6% |
| Wednesday | 66°F | Mostly Sunny | 5 mph NE | 2% |
| Wednesday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 3% |
| Thursday | 68°F | Mostly Sunny | 0 to 5 mph NE | 7% |
| Thursday Night | 53°F | Partly Cloudy | 0 mph | 6% |
| Friday | 69°F | Mostly Sunny | 0 to 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Anamosa (42.109, -91.275). Updated through the day.
Growing snapshot for Anamosa
Last spring frost
May 1
First fall frost
Oct 4
Growing season
154 days
Hardiness zone
5a
More local growing data for Anamosa: nearby ZIP 52205 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Anamosa 1 Wnw, Ia (0.4 mi from Anamosa). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.