Shelby, IA Weather & Growing Conditions
Today
75°F
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms between noon and 1pm, then a slight chance of showers and thunderstorms between 1pm and 3pm, then patchy smoke and a chance of showers and thunderstorms between 3pm and 4pm, then patchy smoke and a chance of showers and thunderstorms between 4pm and 5pm, then patchy smoke and showers and thunderstorms likely. Partly sunny. High near 75, with temperatures falling to around 72 in the afternoon. North northeast wind 8 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 8 to 14 mph NNE | 62% |
| Tonight | 59°F | Patchy Smoke | 5 to 14 mph NNE | 80% |
| Wednesday | 74°F | Patchy Smoke | 8 mph NE | 48% |
| Wednesday Night | 54°F | Partly Cloudy then Patchy Fog | 1 to 6 mph ENE | 4% |
| Thursday | 79°F | Patchy Fog then Sunny | 1 to 7 mph ESE | 0% |
| Thursday Night | 62°F | Mostly Clear | 6 mph SSE | 6% |
| Friday | 84°F | Mostly Sunny | 5 to 9 mph S | 8% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph S | 15% |
| Saturday | 85°F | Mostly Sunny | 6 to 12 mph SE | 11% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 10 mph SSE | 32% |
| Sunday | 87°F | Chance Showers And Thunderstorms then Mostly Sunny | 7 to 12 mph SSE | 27% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms | 10 to 14 mph SSE | 24% |
| Monday | 89°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 13 mph SSW | 24% |
| Monday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 13 mph ESE | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Shelby, IA
Last spring frost
Apr 27
First fall frost
Oct 9
Growing season
165 days
Hardiness zone
5b
Explore more for Shelby, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Harlan, Ia (10.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.