Hillsboro, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hillsboro, a town in Caroline County, Maryland.
Tonight
50°F
Mostly Clear then Patchy Fog
Patchy fog after 4am. Mostly clear, with a low around 50. South wind around 5 mph.
7-day forecast for Hillsboro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Mostly Clear then Patchy Fog | 5 mph S | 2% |
| Wednesday | 77°F | Patchy Fog then Sunny | 5 to 10 mph S | 3% |
| Wednesday Night | 60°F | Mostly Cloudy | 5 mph S | 5% |
| Thursday | 75°F | Slight Chance Light Rain | 10 mph S | 19% |
| Thursday Night | 63°F | Light Rain | 5 to 10 mph S | 89% |
| Friday | 70°F | Light Rain | 5 mph SW | 89% |
| Friday Night | 53°F | Light Rain | 0 to 5 mph W | 81% |
| Saturday | 66°F | Slight Chance Light Rain then Mostly Sunny | 5 to 10 mph NW | 15% |
| Saturday Night | 43°F | Partly Cloudy | 5 mph NW | 10% |
| Sunday | 61°F | Mostly Sunny | 5 mph NW | 6% |
| Sunday Night | 42°F | Partly Cloudy then Slight Chance Light Rain | 0 to 5 mph W | 18% |
| Monday | 61°F | Slight Chance Light Rain | 5 to 10 mph W | 20% |
| Monday Night | 40°F | Slight Chance Light Rain | 5 mph W | 20% |
| Tuesday | 63°F | Sunny | 5 to 10 mph SW | 14% |
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 Nov 4, 2026.