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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

WhenTempForecastWindPrecip
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

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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.