Potomac · DC & Marshall Landing
Boater / angler outlook for Marshall Landing & DC — temps, wind, alerts, river, water temp, visibility, sun/moon, and tides.
7-day GFS precip loop — Mid-Atlantic / Potomac zoom
NOAA/NWS NCEP MAG · GFS
Open on MAG
7-Day High / Low
Δ is vs previous NWS run for that city and calendar day. First load may show — until the next refresh.
| City | TodaySep 10 | TomorrowSep 11 | SatSep 12 | SunSep 13 | MonSep 14 | TueSep 15 | WedSep 16 |
|---|---|---|---|---|---|---|---|
| Washington, DC | 89° 69° 0 · 0 | 83° 67° 0 · 0 | 84° 70° 0 · 0 | 86° 69° 0 · 0 | 86° 66° 0 · 0 | 87° 70° 0 · 0 | 90° 68° 0 · 0 |
| Marshall Landing | 88° 71° 0 · -2 | 83° 69° 0 · -1 | 84° 73° 0 · 0 | 86° 70° 0 · 0 | 85° 67° 0 · 0 | 87° 71° 0 · 0 | 90° 70° 0 · 0 |
Wind · Marshall Landing
NWS gridpoint wind at Marshall Landing (LWX). Direction is where wind is FROM. Speeds in mph.
| Period | From | Speed | Sky |
|---|---|---|---|
| Today | → W | 6 mph | Partly Sunny |
| Tonight | ↘ NW | 3 mph | Storms then Storms Likely |
| Friday | ↙ NE | 6 mph | Rain Showers then Partly Sunny |
| Friday Night | ← E | 3 mph | Partly Cloudy |
| Saturday | ↖ SE | 3–7 mph | Mostly Cloudy then Storms |
| Saturday Night | ↑ S | 2–7 mph | Storms Likely |
| Sunday | → W | 3 mph | Rain Showers then Slight Storms |
| Sunday Night | ↘ NW | 2 mph | Slight Storms then Partly Cloudy |
| Monday | ↓ N | 5 mph | Mostly Sunny |
| Monday Night | ↖ SE | 5 mph | Partly Cloudy |
| Tuesday | ↑ S | 2–7 mph | Sunny |
| Tuesday Night | ↑ S | 7 mph | Mostly Clear |
| Wednesday | ↑ S | 5 mph | Mostly Sunny then Storms |
| Wednesday Night | ← E | 5 mph | Storms |
Marine & weather alerts
Active NWS alerts for Marshall Landing and Washington, DC points.
River stage, flow & water temp
USGS instantaneous values — Little Falls is the reference Potomac gauge for the DC corridor.
Open USGS gauge · water temp 2026-09-10 11:18
Visibility, fog risk & pressure
Visibility from nearby airports (KDCA / KDAA / KADW). Fog risk from temp–dewpoint spread.
| Site | Vis | Temp | Dew | Fog | Wx |
|---|---|---|---|---|---|
| KADW | 10 mi | 78° | 65° | Low | CLR |
| KDAA | 10 mi | 79° | 67° | Low | CLR |
| KDCA | 10 mi | 81° | 70° | Low | BKN |
| KDAA | 10 mi | 79° | 67° | Low | Clear |
Sunrise, sunset & moon
Sunrise/sunset computed for Marshall Landing; moon phase for local calendar day.
Tide outlook · Washington, DC gauge
Tides are Washington, DC gauge (NOAA 8594900, MLLW). Applies to nearby Potomac sites including Marshall Landing with timing/height nuance.
Sites
- Washington, DCDistrict of Columbia89° / 69°
- Marshall LandingBryans Road, MD · Potomac88° / 71°
Compose Potomac outlook PNG
Builds a shareable card with temps, wind, river snapshot, and next tides.