Magnolia, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Magnolia, a city in Harrison County, Iowa.
Tonight
60°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy. Low around 60, with temperatures rising to around 63 overnight. North wind around 9 mph, with gusts as high as 16 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Magnolia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 60°F | Chance Rain Showers | 9 mph N | 26% |
| Sunday | 62°F | Chance Rain Showers | 10 mph NNE | 53% |
| Sunday Night | 55°F | Rain Showers Likely | 8 mph NE | 66% |
| Monday | 57°F | Rain Showers | 9 mph NE | 76% |
| Monday Night | 51°F | Chance Rain Showers then Mostly Cloudy | 5 to 8 mph NE | 32% |
| Tuesday | 60°F | Partly Sunny | 7 mph ENE | 3% |
| Tuesday Night | 47°F | Partly Cloudy | 5 mph E | 0% |
| Wednesday | 63°F | Partly Sunny | 6 mph ESE | 4% |
| Wednesday Night | 53°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 7 mph SE | 23% |
| Thursday | 66°F | Chance Showers And Thunderstorms | 8 mph SSE | 36% |
| Thursday Night | 58°F | Slight Chance Rain Showers | 6 mph SE | 19% |
| Friday | 68°F | Slight Chance Rain Showers | 6 mph ESE | 22% |
| Friday Night | 60°F | Chance Rain Showers | 7 mph ESE | 27% |
| Saturday | 68°F | Chance Rain Showers | 7 to 10 mph SE | 37% |
Forecast source: National Weather Service (api.weather.gov) for Magnolia (41.693, -95.874). Updated through the day.
Growing snapshot for Magnolia
Last spring frost
Apr 29
First fall frost
Oct 8
Growing season
162 days
Hardiness zone
5b
More local growing data for Magnolia: nearby ZIP 51550 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
California Junction
Dunlap
Little Sioux
Logan
Loveland
Missouri Valley
Modale
Mondamin
Persia
Pisgah
River Sioux
Woodbine
Climate data from the nearest NOAA station, Logan, Ia (5.8 mi from Magnolia). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.