Williston, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Williston, a community in Caroline County, Maryland.
This Afternoon
73°F
Sunny
Sunny. High near 73, with temperatures falling to around 67 in the afternoon. South wind around 5 mph.
7-day forecast for Williston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Sunny | 5 mph S | 2% |
| Tonight | 50°F | Patchy Fog | 0 to 5 mph S | 2% |
| Wednesday | 77°F | Patchy Fog then Mostly Sunny | 0 to 5 mph S | 2% |
| Wednesday Night | 59°F | Mostly Cloudy | 5 mph S | 1% |
| Thursday | 76°F | Slight Chance Light Rain | 5 mph S | 16% |
| Thursday Night | 62°F | Chance Light Rain then Chance T-storms | 5 mph S | 71% |
| Friday | 73°F | Rain | 0 to 5 mph S | 82% |
| Friday Night | 53°F | Light Rain | 0 mph | 82% |
| Saturday | 68°F | Chance Light Rain | 0 to 5 mph NW | 30% |
| Saturday Night | 44°F | Slight Chance Light Rain then Partly Cloudy | 0 mph | 16% |
| Sunday | 64°F | Mostly Sunny | 0 to 5 mph NW | 5% |
| Sunday Night | 44°F | Partly Cloudy then Slight Chance Light Rain | 0 to 5 mph NW | 22% |
| Monday | 62°F | Chance Light Rain | 5 to 10 mph NW | 31% |
| Monday Night | 42°F | Chance Light Rain | 5 mph NW | 26% |
Forecast source: National Weather Service (api.weather.gov) for Williston (38.830, -75.851). Updated through the day.
Growing snapshot for Williston
Last spring frost
Apr 11
First fall frost
Oct 30
Growing season
200 days
Hardiness zone
7b
More local growing data for Williston: nearby ZIP 21629 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Greenwood 2Ne, De (13.7 mi from Williston). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.