Shelby, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Shelby, a city in Shelby County, Iowa.
Overnight
69°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. Low around 69, with temperatures rising to around 71 overnight. Southwest wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Shelby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Showers And Thunderstorms Likely | 6 mph SW | 65% |
| Saturday | 78°F | Chance Showers And Thunderstorms | 5 to 8 mph W | 53% |
| Saturday Night | 60°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 10 mph N | 39% |
| Sunday | 64°F | Chance Rain Showers | 9 to 13 mph NNE | 35% |
| Sunday Night | 55°F | Chance Rain Showers | 10 mph NE | 36% |
| Monday | 59°F | Rain Showers Likely | 10 mph NE | 58% |
| Monday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 5 to 9 mph NE | 50% |
| Tuesday | 60°F | Partly Sunny | 8 mph ENE | 2% |
| Tuesday Night | 46°F | Partly Cloudy | 2 to 6 mph E | 0% |
| Wednesday | 64°F | Mostly Sunny | 6 mph ESE | 1% |
| Wednesday Night | 51°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph ESE | 20% |
| Thursday | 64°F | Chance Rain Showers | 3 to 7 mph SE | 28% |
| Thursday Night | 55°F | Slight Chance Rain Showers | 5 mph SE | 22% |
| Friday | 66°F | Slight Chance Rain Showers | 3 to 8 mph SE | 22% |
Forecast source: National Weather Service (api.weather.gov) for Shelby (41.506, -95.449). Updated through the day.
Growing snapshot for Shelby
Last spring frost
Apr 27
First fall frost
Oct 9
Growing season
165 days
Hardiness zone
5b
More local growing data for Shelby: nearby ZIP 51570 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Harlan, Ia (10.6 mi from Shelby). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.