Marion, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marion, a city in Linn County, Iowa.
This Afternoon
68°F
Showers And Thunderstorms
Rain showers likely before 3pm, then showers and thunderstorms. Mostly cloudy. High near 68, with temperatures falling to around 65 in the afternoon. Southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
7-day forecast for Marion
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Showers And Thunderstorms | 15 mph SE | 89% |
| Tonight | 50°F | Showers And Thunderstorms Likely | 10 to 15 mph S | 60% |
| Wednesday | 53°F | Chance Rain Showers | 10 to 15 mph SW | 41% |
| Wednesday Night | 44°F | Chance Rain Showers | 10 to 15 mph SW | 30% |
| Thursday | 52°F | Rain Showers Likely | 10 mph W | 60% |
| Thursday Night | 40°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph N | 20% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph N | 4% |
| Friday Night | 33°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Saturday | 53°F | Mostly Sunny | 0 to 5 mph W | 2% |
| Saturday Night | 35°F | Mostly Clear | 0 to 5 mph W | 4% |
| Sunday | 59°F | Sunny | 5 mph W | 8% |
| Sunday Night | 37°F | Mostly Clear | 5 mph SW | 2% |
| Monday | 62°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Marion (42.045, -91.586). Updated through the day.
Growing snapshot for Marion
Last spring frost
Apr 28
First fall frost
Oct 12
Growing season
166 days
Hardiness zone
5a
More local growing data for Marion: nearby ZIP 52302 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Alburnett
Bertram
Cedar Rapids
Center Point
Central City
Coggon
Ely
Fairfax
Hiawatha
Mount Vernon
Palo
Prairieburg
Robins
Springville
Walker
Climate data from the nearest NOAA station, Cedar Rapids #1, Ia (1.8 mi from Marion). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.