Hillsboro, IA Weather & Growing Conditions
Today
89°F
Mostly Sunny
Mostly sunny. High near 89, with temperatures falling to around 87 in the afternoon. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Mostly Sunny | 5 mph S | 13% |
| Tonight | 67°F | Chance Showers And Thunderstorms | 5 mph NE | 39% |
| Wednesday | 81°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph NE | 81% |
| Wednesday Night | 62°F | Showers And Thunderstorms | 5 mph N | 80% |
| Thursday | 82°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph NE | 61% |
| Thursday Night | 62°F | Mostly Clear | 0 mph | 8% |
| Friday | 84°F | Mostly Sunny | 0 to 5 mph SE | 7% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 16% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms then Sunny | 5 mph S | 16% |
| Saturday Night | 71°F | Mostly Clear | 5 to 10 mph S | 7% |
| Sunday | 90°F | Sunny | 10 mph SW | 7% |
| Sunday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 21% |
| Monday | 90°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph S | 21% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 10 mph S | 27% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hillsboro, IA
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
163 days
Hardiness zone
6a
Explore more for Hillsboro, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Mt Pleasant 1 Ssw, Ia (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.