Hillsboro, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hillsboro, a town in Caroline County, Maryland.
This Afternoon
85°F
Mostly Sunny
Mostly sunny, with a high near 85. North wind around 10 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Hillsboro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 85°F | Mostly Sunny | 10 mph N | 9% |
| Tonight | 64°F | Partly Cloudy | 5 mph N | 4% |
| Saturday | 78°F | Mostly Sunny | 5 to 10 mph NE | 10% |
| Saturday Night | 65°F | Patchy Fog | 5 to 10 mph E | 2% |
| Sunday | 82°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 17% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Patchy Fog | 5 to 10 mph W | 67% |
| Monday | 74°F | Chance Rain Showers | 5 to 10 mph N | 47% |
| Monday Night | 63°F | Chance Rain Showers | 5 to 10 mph NE | 43% |
| Tuesday | 69°F | Chance Rain Showers | 10 to 15 mph NE | 48% |
| Tuesday Night | 58°F | Chance Rain Showers | 10 to 15 mph NE | 48% |
| Wednesday | 65°F | Chance Rain Showers | 10 to 15 mph NE | 42% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 42% |
| Thursday | 66°F | Chance Showers And Thunderstorms | 10 mph NE | 34% |
| Thursday Night | 56°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 34% |
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 Sep 18, 2026.