Harman US

Wheaton, MD Weather & Growing Conditions

Tonight
52°F
Mostly Clear then Patchy Fog
Patchy fog after 5am. Mostly clear, with a low around 52. South wind around 5 mph.

7-day forecast

WhenTempForecastWindPrecip
Tonight 52°F Mostly Clear then Patchy Fog 5 mph S 2%
Wednesday 73°F Patchy Fog then Mostly Sunny 3 to 9 mph S 2%
Wednesday Night 61°F Mostly Cloudy then Chance Light Rain 7 mph S 38%
Thursday 74°F Chance Light Rain 9 mph S 49%
Thursday Night 61°F Chance Light Rain 2 to 6 mph SW 53%
Friday 69°F Rain Likely 5 mph NW 68%
Friday Night 50°F Light Rain Likely 2 to 7 mph NW 68%
Saturday 63°F Mostly Sunny 7 to 10 mph NW 12%
Saturday Night 42°F Partly Cloudy 5 to 8 mph NW 12%
Sunday 60°F Mostly Sunny 8 mph NW 5%
Sunday Night 42°F Partly Cloudy then Slight Chance Light Rain 7 mph W 20%
Monday 61°F Slight Chance Light Rain 7 to 14 mph NW 20%
Monday Night 40°F Slight Chance Light Rain 5 to 8 mph W 19%
Tuesday 63°F Sunny 5 to 12 mph W 12%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Wheaton, MD

Last spring frost
Apr 10
First fall frost
Nov 1
Growing season
202 days
Hardiness zone
7b

Explore more for Wheaton, MD: full frost dates · planting calendar · Maryland frost dates

Climate data from the nearest NOAA station, Beltsville, Md (6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.