Updated 2026-09-26 12:00 local time · ZIP codes 20855
Overcast
* WHAT...North winds 10 to 20 kt with gusts up to 30 kt. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, and Patapsco River including Baltimore Harbor. * WHEN...Until 6 AM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
* WHAT...North winds 10 to 20 kt with gusts up to 30 kt. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, and Patapsco River including Baltimore Harbor. * WHEN...Until 6 AM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
70°10% rain68°10% rain70°11% rain69°11% rain
68°6% rain67°12% rain
61°42% rain
59°63% rain
59°48% rain
60°26% rain
59°30% rain60°26% rain
Rain chance reaches about 63% over the next 12 hours.
It feels like 60°F with winds near 15 mph.
68°F, 6% rain chance and 11 mph wind.
Visibility is around 6 mi; gusts may reach 28 mph.
Current temperature is 70°F, wind 15 mph, rain chance up to 63%.
UV index is 1.
Maryland ranges from Atlantic coastal plain to higher western terrain. Summers are usually warm and humid, while winter conditions vary substantially by elevation and distance from the coast.
Derwood is part of the South weather region. The forecast point is near 39.12°N latitude and 77.16°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Overcast and 70°F in Derwood, MD. Today's high is 70°F with a 57% rain chance. Winds are around 15 mph with gusts near 24 mph. Relative humidity is 43%, pressure is 29.92 inHg, and visibility is about 6 miles.
Sunrise is at 07:00 AM and sunset is at 06:59 PM. Tomorrow's forecast calls for Overcast with a high near 71°F and a low near 57°F. The maximum rain chance is 48%.
