Jefferson, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jefferson, a community in Frederick County, Maryland.
This Afternoon
69°F
Sunny
Sunny, with a high near 69. Southeast wind around 8 mph.
7-day forecast for Jefferson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Sunny | 8 mph SE | 2% |
| Tonight | 51°F | Mostly Clear | 5 mph SE | 2% |
| Wednesday | 74°F | Mostly Sunny | 3 to 14 mph S | 2% |
| Wednesday Night | 61°F | Mostly Cloudy then Light Rain | 6 to 10 mph S | 79% |
| Thursday | 74°F | Light Rain Likely | 6 to 10 mph S | 74% |
| Thursday Night | 60°F | Chance Light Rain | 1 to 5 mph SW | 50% |
| Friday | 69°F | Chance Light Rain | 3 mph NW | 52% |
| Friday Night | 49°F | Chance Light Rain | 1 to 6 mph NW | 44% |
| Saturday | 63°F | Mostly Sunny | 6 to 13 mph NW | 11% |
| Saturday Night | 41°F | Partly Cloudy | 5 to 9 mph NW | 11% |
| Sunday | 60°F | Mostly Sunny | 5 to 9 mph W | 8% |
| Sunday Night | 40°F | Partly Cloudy then Slight Chance Light Rain | 5 to 8 mph W | 20% |
| Monday | 60°F | Slight Chance Light Rain | 8 to 16 mph NW | 22% |
| Monday Night | 38°F | Slight Chance Light Rain | 3 to 8 mph W | 22% |
Forecast source: National Weather Service (api.weather.gov) for Jefferson (39.365, -77.541). Updated through the day.
Growing snapshot for Jefferson
Last spring frost
Apr 2
First fall frost
Nov 6
Growing season
218 days
Hardiness zone
7b
More local growing data for Jefferson: nearby ZIP 21755 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
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Green Valley
Lewistown
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Middletown
Monrovia
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Climate data from the nearest NOAA station, Frederick Police Brks, Md (7.9 mi from Jefferson). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.