Calamus, IA Weather & Growing Conditions
This Afternoon
78°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 78, with temperatures falling to around 70 in the afternoon. South wind around 5 mph. Chance of precipitation is 60%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Showers And Thunderstorms Likely | 5 mph S | 64% |
| Tonight | 63°F | Showers And Thunderstorms | 0 to 5 mph E | 91% |
| Sunday | 66°F | Showers And Thunderstorms Likely | 5 to 10 mph NE | 65% |
| Sunday Night | 56°F | Chance Rain Showers | 5 to 10 mph NE | 40% |
| Monday | 63°F | Rain Showers Likely | 10 mph NE | 69% |
| Monday Night | 51°F | Rain Showers Likely | 5 to 10 mph NE | 69% |
| Tuesday | 61°F | Rain Showers Likely | 5 to 10 mph NE | 58% |
| Tuesday Night | 49°F | Partly Cloudy | 5 mph NE | 8% |
| Wednesday | 64°F | Partly Sunny | 5 mph NE | 3% |
| Wednesday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 3% |
| Thursday | 66°F | Partly Sunny | 0 mph | 9% |
| Thursday Night | 55°F | Slight Chance Rain Showers | 0 mph | 18% |
| Friday | 69°F | Partly Sunny | 0 mph | 12% |
| Friday Night | 54°F | Mostly Cloudy | 0 mph | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Calamus, IA
Last spring frost
Apr 27
First fall frost
Oct 10
Growing season
165 days
Hardiness zone
5b
Explore more for Calamus, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Lowden, Ia (10.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.