Anamosa, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Anamosa, a city in Jones County, Iowa.
Today
82°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Partly sunny. High near 82, with temperatures falling to around 80 in the afternoon. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
7-day forecast for Anamosa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 34% |
| Tonight | 63°F | Showers And Thunderstorms Likely | 5 mph N | 85% |
| Wednesday | 75°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 67% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 39% |
| Thursday | 79°F | Slight Chance Rain Showers then Mostly Sunny | 0 mph | 23% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 2% |
| Friday | 82°F | Sunny | 0 to 5 mph SE | 4% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph S | 9% |
| Saturday | 86°F | Mostly Sunny | 5 mph S | 10% |
| Saturday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph S | 24% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph S | 24% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 5 mph S | 41% |
| Monday | 86°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 41% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 39% |
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 Aug 4, 2026.