Malcom, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Malcom, a city in Poweshiek County, Iowa.
Tonight
67°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 11pm and 5am, then showers and thunderstorms likely. Mostly cloudy, with a low around 67. Southeast wind 7 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Malcom
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 67°F | Chance Showers And Thunderstorms | 7 to 10 mph SE | 57% |
| Saturday | 82°F | Chance Showers And Thunderstorms | 8 mph SSW | 51% |
| Saturday Night | 61°F | Chance Showers And Thunderstorms | 5 to 8 mph NNW | 49% |
| Sunday | 67°F | Showers And Thunderstorms Likely | 8 to 12 mph NNE | 66% |
| Sunday Night | 55°F | Showers And Thunderstorms Likely | 12 mph NE | 66% |
| Monday | 61°F | Rain Showers Likely | 13 mph ENE | 60% |
| Monday Night | 50°F | Rain Showers Likely | 7 to 10 mph NE | 60% |
| Tuesday | 60°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph NE | 22% |
| Tuesday Night | 46°F | Partly Cloudy | 6 mph NE | 5% |
| Wednesday | 64°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 2 mph ENE | 3% |
| Thursday | 67°F | Partly Sunny | 3 mph E | 10% |
| Thursday Night | 53°F | Partly Cloudy | 1 mph E | 8% |
| Friday | 67°F | Mostly Sunny | 5 mph E | 8% |
Forecast source: National Weather Service (api.weather.gov) for Malcom (41.706, -92.555). Updated through the day.
Growing snapshot for Malcom
Last spring frost
May 3
First fall frost
Oct 6
Growing season
155 days
Hardiness zone
5a
More local growing data for Malcom: nearby ZIP 50157 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grinnell 3 Sw, Ia (9.7 mi from Malcom). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.