Carbon, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Carbon, a city in Adams County, Iowa.
Today
82°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 4pm, then a slight chance of showers and thunderstorms. Partly sunny. High near 82, with temperatures falling to around 78 in the afternoon. West southwest wind 3 to 9 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Carbon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Chance Showers And Thunderstorms | 3 to 9 mph WSW | 46% |
| Tonight | 62°F | Chance Showers And Thunderstorms | 8 mph N | 47% |
| Sunday | 67°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 8 to 12 mph NNE | 45% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 8 to 12 mph NE | 48% |
| Monday | 61°F | Chance Rain Showers | 12 mph NE | 52% |
| Monday Night | 52°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 52% |
| Tuesday | 60°F | Partly Sunny | 6 to 9 mph ENE | 6% |
| Tuesday Night | 46°F | Partly Cloudy | 2 to 6 mph E | 3% |
| Wednesday | 64°F | Mostly Sunny | 5 mph E | 1% |
| Wednesday Night | 51°F | Partly Cloudy | 3 mph ESE | 11% |
| Thursday | 66°F | Chance Rain Showers | 5 mph SE | 26% |
| Thursday Night | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph ESE | 22% |
| Friday | 67°F | Slight Chance Rain Showers | 3 to 7 mph ESE | 22% |
| Friday Night | 56°F | Mostly Cloudy | 5 mph ESE | 13% |
Forecast source: National Weather Service (api.weather.gov) for Carbon (41.050, -94.825). Updated through the day.
Growing snapshot for Carbon
Last spring frost
Apr 27
First fall frost
Oct 12
Growing season
168 days
Hardiness zone
5b
More local growing data for Carbon: nearby ZIP 50839 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Corning, Ia (5.3 mi from Carbon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.