Calumet, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calumet, a city in O'brien County, Iowa.
Overnight
62°F
Chance Rain Showers
A chance of rain showers. Cloudy, with a low around 62. North wind around 15 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Calumet
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Chance Rain Showers | 15 mph N | 51% |
| Tuesday | 73°F | Chance Rain Showers | 5 to 15 mph NNW | 60% |
| Tuesday Night | 54°F | Patchy Smoke then Mostly Cloudy | 0 to 5 mph N | 66% |
| Wednesday | 75°F | Mostly Sunny | 0 to 5 mph E | 2% |
| Wednesday Night | 52°F | Mostly Clear | 5 mph SSE | 1% |
| Thursday | 81°F | Sunny | 5 to 10 mph S | 0% |
| Thursday Night | 61°F | Mostly Clear | 5 to 10 mph S | 4% |
| Friday | 86°F | Sunny | 5 to 15 mph SSW | 4% |
| Friday Night | 64°F | Mostly Clear | 5 to 10 mph S | 14% |
| Saturday | 89°F | Sunny | 5 to 15 mph S | 6% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph SSE | 21% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SE | 20% |
| Sunday Night | 67°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 to 15 mph ESE | 20% |
| Monday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph E | 20% |
Forecast source: National Weather Service (api.weather.gov) for Calumet (42.945, -95.551). Updated through the day.
Growing snapshot for Calumet
Last spring frost
Apr 29
First fall frost
Oct 10
Growing season
163 days
Hardiness zone
5a
More local growing data for Calumet: nearby ZIP 51009 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Primghar, Ia (10.5 mi from Calumet). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.