Hillsboro, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hillsboro, a city in Lee County, Iowa.
Today
89°F
Mostly Sunny
Mostly sunny. High near 89, with temperatures falling to around 87 in the afternoon. Southwest wind around 5 mph.
7-day forecast for Hillsboro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Mostly Sunny | 5 mph SW | 13% |
| Tonight | 67°F | Chance Showers And Thunderstorms | 5 mph NE | 41% |
| Wednesday | 81°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph NE | 82% |
| Wednesday Night | 62°F | Showers And Thunderstorms | 5 mph N | 79% |
| Thursday | 82°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph NE | 59% |
| Thursday Night | 62°F | Mostly Clear | 0 to 5 mph E | 7% |
| Friday | 85°F | Sunny | 0 to 5 mph SE | 7% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 16% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms then Sunny | 5 mph S | 16% |
| Saturday Night | 70°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 | 26% |
Forecast source: National Weather Service (api.weather.gov) for Hillsboro (40.837, -91.711). Updated through the day.
Growing snapshot for Hillsboro
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
163 days
Hardiness zone
6a
More local growing data for Hillsboro: nearby ZIP 52630 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Argyle
Denmark
Donnellson
Farmington
Fort Madison
Franklin
Houghton
Keokuk
Montrose
Mooar
Oak Hills
Sandusky
St. Paul
West Point
Wever
Climate data from the nearest NOAA station, Mt Pleasant 1 Ssw, Ia (12 mi from Hillsboro). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.