Salem, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Salem, a city in Henry County, Iowa.
Tonight
66°F
Chance Showers And Thunderstorms
A slight chance of rain showers before 11pm, then a chance of showers and thunderstorms between 11pm and 1am, then showers and thunderstorms likely. Mostly cloudy. Low around 66, with temperatures rising to around 69 overnight. North wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Salem
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 67% |
| Sunday | 71°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 10 mph N | 68% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 10 mph NE | 65% |
| Monday | 63°F | Showers And Thunderstorms | 10 mph NE | 80% |
| Monday Night | 53°F | Rain Showers Likely | 10 mph NE | 72% |
| Tuesday | 61°F | Chance Rain Showers | 10 mph NE | 32% |
| Tuesday Night | 49°F | Partly Cloudy | 5 mph NE | 4% |
| Wednesday | 64°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 68°F | Partly Sunny | 0 mph | 5% |
| Thursday Night | 56°F | Slight Chance Rain Showers | 0 mph | 17% |
| Friday | 72°F | Slight Chance Rain Showers | 0 to 5 mph NE | 17% |
| Friday Night | 57°F | Partly Cloudy | 0 mph | 8% |
| Saturday | 72°F | Mostly Sunny | 0 to 5 mph E | 9% |
Forecast source: National Weather Service (api.weather.gov) for Salem (40.852, -91.621). Updated through the day.
Growing snapshot for Salem
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
163 days
Hardiness zone
6a
More local growing data for Salem: nearby ZIP 52649 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Coppock
Lowell
Mount Pleasant
Mount Union
New London
Olds
Swedesburg
Trenton
Wayland
Westwood
Winfield
Climate data from the nearest NOAA station, Mt Pleasant 1 Ssw, Ia (8 mi from Salem). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.