Calamus, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calamus, a city in Clinton County, Iowa.
Today
84°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 4pm. Mostly sunny. High near 84, with temperatures falling to around 82 in the afternoon. Southwest wind around 5 mph. Chance of precipitation is 30%.
7-day forecast for Calamus
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 28% |
| Tonight | 65°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 84% |
| Wednesday | 77°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph N | 72% |
| Wednesday Night | 60°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 mph | 58% |
| Thursday | 80°F | Chance Rain Showers then Mostly Sunny | 0 mph | 33% |
| Thursday Night | 60°F | Mostly Clear | 0 mph | 4% |
| Friday | 82°F | Mostly Sunny | 0 mph | 4% |
| Friday Night | 64°F | Mostly Clear | 0 mph | 9% |
| Saturday | 85°F | Sunny | 0 to 5 mph S | 11% |
| Saturday Night | 69°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 mph S | 19% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph S | 19% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 5 mph SW | 37% |
| Monday | 86°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph S | 36% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 5 mph SW | 37% |
Forecast source: National Weather Service (api.weather.gov) for Calamus (41.826, -90.760). Updated through the day.
Growing snapshot for Calamus
Last spring frost
Apr 27
First fall frost
Oct 10
Growing season
165 days
Hardiness zone
5b
More local growing data for Calamus: nearby ZIP 52729 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Andover
Camanche
Charlotte
Clinton
Delmar
DeWitt
Goose Lake
Grand Mound
Lost Nation
Low Moor
Toronto
Welton
Wheatland
Climate data from the nearest NOAA station, Lowden, Ia (10.5 mi from Calamus). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.