Marcus, IA Weather & Growing Conditions
This Afternoon
79°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 79. East wind around 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Slight Chance Showers And Thunderstorms | 10 mph E | 17% |
| Tonight | 64°F | Chance Showers And Thunderstorms | 5 to 10 mph ENE | 27% |
| Saturday | 71°F | Patchy Fog then Cloudy | 5 to 10 mph N | 30% |
| Saturday Night | 57°F | Cloudy | 10 mph NNE | 11% |
| Sunday | 65°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph NE | 25% |
| Sunday Night | 53°F | Rain Showers Likely | 10 mph ENE | 57% |
| Monday | 58°F | Rain Showers Likely | 10 mph ENE | 62% |
| Monday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph ENE | 42% |
| Tuesday | 61°F | Partly Sunny | 5 to 10 mph E | 9% |
| Tuesday Night | 46°F | Partly Cloudy | 5 mph ESE | 0% |
| Wednesday | 65°F | Mostly Sunny | 5 mph SE | 6% |
| Wednesday Night | 50°F | Mostly Cloudy then Chance Rain Showers | 5 mph SE | 28% |
| Thursday | 67°F | Chance Rain Showers | 5 mph SSE | 28% |
| Thursday Night | 53°F | Mostly Cloudy then Slight Chance Rain Showers | 0 to 5 mph SE | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Marcus, IA
Last spring frost
May 4
First fall frost
Oct 4
Growing season
152 days
Hardiness zone
5a
Explore more for Marcus, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Cherokee, Ia (13.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.