Hillsboro, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hillsboro, a town in Caroline County, Maryland.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. East wind around 5 mph.
7-day forecast for Hillsboro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 mph E | 3% |
| Tonight | 68°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 38% |
| Wednesday | 86°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 64% |
| Wednesday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 31% |
| Thursday | 89°F | Sunny | 5 to 10 mph S | 8% |
| Thursday Night | 73°F | Mostly Clear | 5 to 10 mph S | 10% |
| Friday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 16% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 42% |
| Saturday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 26% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 32% |
| Sunday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 15% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 15% |
| Monday | 90°F | Sunny | 0 to 5 mph SW | 8% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 19% |
Forecast source: National Weather Service (api.weather.gov) for Hillsboro (38.917, -75.942). Updated through the day.
Growing snapshot for Hillsboro
Last spring frost
Apr 1
First fall frost
Nov 7
Growing season
220 days
Hardiness zone
7b
More local growing data for Hillsboro: nearby ZIP 21641 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Royal Oak 2 Ssw, Md (19.3 mi from Hillsboro). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.