Hillsboro, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hillsboro, a city in Lee County, Iowa.
This Afternoon
84°F
Chance Showers And Thunderstorms
A slight chance of rain showers before 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 84. South wind around 10 mph. Chance of precipitation is 30%.
7-day forecast for Hillsboro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Chance Showers And Thunderstorms | 10 mph S | 25% |
| Tonight | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph NW | 76% |
| Sunday | 72°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph N | 79% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 10 mph NE | 66% |
| Monday | 63°F | Showers And Thunderstorms Likely | 10 mph NE | 66% |
| Monday Night | 53°F | Chance Rain Showers | 10 mph NE | 50% |
| Tuesday | 61°F | Chance Rain Showers | 10 mph NE | 41% |
| Tuesday Night | 48°F | Partly Cloudy | 5 mph NE | 4% |
| Wednesday | 66°F | Sunny | 5 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 3% |
| Thursday | 69°F | Partly Sunny | 0 to 5 mph NE | 7% |
| Thursday Night | 55°F | Partly Cloudy | 0 mph | 5% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph E | 5% |
| Friday Night | 55°F | Partly Cloudy | 0 to 5 mph E | 6% |
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 Sep 19, 2026.