Marne, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marne, a city in Cass County, Iowa.
Today
81°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 81, with temperatures falling to around 78 in the afternoon. North wind 5 to 12 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Marne
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Chance Showers And Thunderstorms | 5 to 12 mph N | 42% |
| Tonight | 60°F | Showers And Thunderstorms | 6 to 12 mph NNE | 89% |
| Wednesday | 73°F | Chance Showers And Thunderstorms | 9 mph ENE | 42% |
| Wednesday Night | 55°F | Partly Cloudy | 1 to 7 mph ENE | 10% |
| Thursday | 81°F | Sunny | 0 to 6 mph E | 2% |
| Thursday Night | 61°F | Mostly Clear | 5 mph SE | 3% |
| Friday | 85°F | Sunny | 3 to 9 mph S | 3% |
| Friday Night | 66°F | Mostly Clear | 7 mph S | 7% |
| Saturday | 89°F | Sunny | 3 to 14 mph S | 4% |
| Saturday Night | 71°F | Mostly Clear | 13 mph S | 10% |
| Sunday | 90°F | Mostly Sunny | 10 to 14 mph SSE | 10% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms | 14 mph SSE | 25% |
| Monday | 90°F | Chance Showers And Thunderstorms then Mostly Sunny | 12 to 15 mph S | 25% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 9 to 16 mph SE | 25% |
Forecast source: National Weather Service (api.weather.gov) for Marne (41.449, -95.111). Updated through the day.
Growing snapshot for Marne
Last spring frost
Apr 30
First fall frost
Oct 2
Growing season
153 days
Hardiness zone
5b
More local growing data for Marne: nearby ZIP 51552 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Atlantic 1 Ne, Ia (7.4 mi from Marne). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.