Coastal Flood Advisory
Ends in 3 h 8 min
When
Until 10 PM EDT this evening, especially around the time of high tide.
Where
Shoreline in the City of Alexandria and Arlington County.
Issued for this forecast zone · National Weather Service Baltimore MD/Washington DC
What, impacts and precautionsHide details
What
Around one half foot of inundation above ground level in low lying areas due to tidal flooding.
Impacts
Flooding of lots, parks, and roads with only isolated road closures expected.
Additional details
Tides one to one and a half feet above normal. The next high tide at Alexandria is at 7:41 PM and 8:09 AM.
Precautionary actions
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Areas: Arlington/Falls Church/Alexandria
See it on weather.gov (opens in a new tab)

Observed 6:35 PM EDT at KDCA

Arlington, VA weather

Clear and 57°14°, jacket by 8 PM.

Mostly agree

Now 57°14°

Clear

Wind: 6 mph9 km/h; From the east-southeast. Up to 6 mph9 km/h through 6 AM
Dew point: 43°6°; Comfortable
UV tomorrow: 4Moderate; Moderate 11 AM–5 PM · peak 4
Air quality: 36Good; Ozone · tomorrow moderate
Pressure: 30.52 inHg1034 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (60°16° then, 60°16° now)

Good hours for

Low 44°7° tonight at 5 AM
Above 50°10° tomorrow by 10 AM
High 66°19° tomorrow at 3 PM

TonightDown to 44°7° by 5 AM · Clear
Tomorrow morningUp to 57°14° by 11 AM · Clear
Tomorrow afternoonUp to 66°19° by 3 PM · Clear
Tomorrow nightDown to 44°7° by 4 AM · Clear
Monday morningUp to 58°14° by 11 AM · Clear
Monday afternoonUp to 70°21° by 3 PM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 6p	Clear	60°16° (likely 56°13° to 60°16°)	60°16°	0%	6 mph10 km/h from E, gusts 9 mph15 km/h	47%	17%	0
Sat 7p	Clear	57°14° (likely 53°12° to 57°14°)	57°14°	0%	5 mph8 km/h from E, gusts 8 mph14 km/h	57%	12%	0
Sat 8p	Clear	53°12° (likely 51°11° to 54°12°)	53°12°	0%	3 mph5 km/h from E, gusts 5 mph8 km/h	66%	8%	0
Sat 9p	Clear	51°11° (likely 50°10° to 52°11°)	51°11°	0%	3 mph5 km/h from E, gusts 4 mph6 km/h	74%	9%	0
Sat 10p	Clear	50°10° (likely 49°9° to 51°11°)	50°10°	0%	2 mph3 km/h from E, gusts 4 mph6 km/h	74%	12%	0
Sat 11p	Clear	49°9° (likely 48°9° to 49°9°)	48°9°	0%	3 mph5 km/h from NE, gusts 4 mph6 km/h	80%	16%	0
Sun 12a	Clear	48°9° (likely 47°8° to 49°9°)	47°8°	0%	3 mph5 km/h from NE, gusts 4 mph6 km/h	83%	14%	0
Sun 1a	Clear	47°8° (likely 47°8° to 48°9°)	47°8°	0%	2 mph3 km/h from NE, gusts 3 mph5 km/h	86%	7%	0
Sun 2a	Clear	46°8° (likely 46°8° to 48°9°)	46°8°	0%	2 mph3 km/h from N, gusts 3 mph4 km/h	93%	1%	0
Sun 3a	Clear	45°7° (likely 45°7° to 47°8°)	45°7°	0%	2 mph3 km/h from N, gusts 3 mph5 km/h	93%	1%	0
Sun 4a	Clear	45°7° (likely 44°7° to 46°8°)	45°7°	0%	2 mph3 km/h from N, gusts 3 mph4 km/h	93%	4%	0
Sun 5a	Clear	44°7° (likely 43°6° to 45°7°)	44°7°	0%	2 mph3 km/h from N, gusts 3 mph5 km/h	96%	5%	0
Sun 6a	Clear	44°7° (likely 42°6° to 44°7°)	42°6°	0%	3 mph5 km/h from N, gusts 4 mph6 km/h	96%	4%	0
Sun 7a	Sunny	44°7° (likely 41°5° to 44°7°)	44°7°	0%	2 mph3 km/h from N, gusts 5 mph7 km/h	96%	5%	0
Sun 8a	Sunny	45°7° (likely 41°5° to 45°7°)	44°7°	0%	3 mph5 km/h from N, gusts 5 mph8 km/h	93%	4%	0
Sun 9a	Sunny	48°9° (likely 46°8° to 49°9°)	48°9°	0%	2 mph3 km/h from N, gusts 4 mph6 km/h	86%	4%	1
Sun 10a	Sunny	54°12° (likely 53°12° to 55°13°)	54°12°	0%	2 mph3 km/h from NE, gusts 6 mph9 km/h	71%	4%	2
Sun 11a	Sunny	57°14° (likely 57°14° to 59°15°)	57°14°	0%	2 mph3 km/h from E, gusts 5 mph8 km/h	67%	4%	3
Sun 12p	Sunny	61°16° (likely 60°16° to 62°17°)	61°16°	0%	2 mph3 km/h from E, gusts 5 mph8 km/h	56%	5%	4
Sun 1p	Sunny	63°17° (likely 62°17° to 64°18°)	63°17°	0%	2 mph3 km/h from E, gusts 4 mph7 km/h	50%	4%	4
Sun 2p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	2 mph3 km/h from SE, gusts 4 mph6 km/h	45%	4%	4
Sun 3p	Mostly sunny	66°19° (likely 64°18° to 67°19°)	66°19°	0%	2 mph3 km/h from SE, gusts 6 mph9 km/h	43%	9%	4
Sun 4p	Sunny	65°18° (likely 64°18° to 67°19°)	65°18°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	45%	5%	3
Sun 5p	Sunny	65°18° (likely 63°17° to 66°19°)	65°18°	0%	2 mph3 km/h from SE, gusts 5 mph9 km/h	45%	6%	1
Sun 6p	Clear	63°17° (likely 59°15° to 63°17°)	63°17°	0%	1 mph2 km/h from SE, gusts 5 mph7 km/h	48%	1%	0
Sun 7p	Clear	59°15° (likely 56°13° to 59°15°)	59°15°	0%	2 mph3 km/h from SE, gusts 2 mph4 km/h	57%	1%	0
Sun 8p	Clear	55°13° (likely 53°12° to 57°14°)	55°13°	0%	2 mph3 km/h from SE, gusts 3 mph5 km/h	69%	7%	0
Sun 9p	Clear	53°12° (likely 51°11° to 54°12°)	53°12°	0%	2 mph3 km/h from SE, gusts 5 mph9 km/h	74%	0%	0
Sun 10p	Clear	51°11° (likely 50°10° to 52°11°)	51°11°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	80%	0%	0
Sun 11p	Clear	49°9° (likely 48°9° to 51°11°)	49°9°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	86%	0%	0
Mon 12a	Clear	47°8° (likely 47°8° to 51°11°)	47°8°	0%	2 mph3 km/h from SW, gusts 4 mph6 km/h	93%	2%	0
Mon 1a	Clear	46°8° (likely 46°8° to 49°9°)	46°8°	0%	2 mph3 km/h from W, gusts 4 mph6 km/h	93%	1%	0
Mon 2a	Clear	45°7° (likely 45°7° to 48°9°)	45°7°	0%	2 mph3 km/h from W, gusts 4 mph6 km/h	93%	0%	0
Mon 3a	Clear	45°7° (likely 44°7° to 46°8°)	45°7°	0%	2 mph3 km/h from W, gusts 4 mph6 km/h	93%	0%	0
Mon 4a	Clear	44°7° (likely 43°6° to 46°8°)	44°7°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	96%	6%	0
Mon 5a	Clear	44°7° (likely 42°6° to 45°7°)	44°7°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	96%	13%	0
Mon 6a	Clear	44°7° (likely 42°6° to 45°7°)	44°7°	0%	2 mph3 km/h from W, gusts 7 mph12 km/h	93%	13%	0
Mon 7a	Sunny	43°6° (likely 42°6° to 44°7°)	43°6°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	96%	12%	0
Mon 8a	Sunny	44°7° (likely 42°6° to 44°7°)	44°7°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	89%	22%	0
Mon 9a	Sunny	48°9° (likely 45°7° to 49°9°)	47°8°	0%	3 mph5 km/h from W, gusts 5 mph9 km/h	86%	20%	1
Mon 10a	Sunny	53°12° (likely 52°11° to 56°13°)	53°12°	0%	3 mph5 km/h from W, gusts 8 mph12 km/h	74%	13%	2
Mon 11a	Sunny	58°14° (likely 57°14° to 61°16°)	58°14°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	64%	6%	3
Mon 12p	Sunny	62°17° (likely 62°17° to 64°18°)	62°17°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	54%	0%	4
Mon 1p	Sunny	66°19° (likely 66°19° to 67°19°)	66°19°	0%	5 mph8 km/h from NW, gusts 9 mph15 km/h	47%	1%	4
Mon 2p	Sunny	68°20° (likely 67°19° to 68°20°)	68°20°	0%	6 mph10 km/h from NW, gusts 10 mph16 km/h	45%	0%	4
Mon 3p	Sunny	70°21° (likely 67°19° to 70°21°)	70°21°	0%	7 mph11 km/h from NW, gusts 12 mph19 km/h	42%	0%	4
Mon 4p	Sunny	70°21° (likely 67°19° to 70°21°)	70°21°	0%	6 mph10 km/h from NW, gusts 12 mph19 km/h	42%	0%	3
Mon 5p	Sunny	69°21° (likely 66°19° to 69°21°)	69°21°	0%	5 mph8 km/h from NW, gusts 11 mph18 km/h	45%	0%	1

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Partly sunny. High 63°17°, low 43°6°. Typical 66°19° / 49°9°. Dry. Mostly agree.
1. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Official NWS forecast
Tonight: Mostly clear, with a low around 43. Northeast wind 2 to 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–65°18°
Low, likely
38°3°–43°6°
Typical high / low
66°19° / 49°9°
Wind
7 mph11 km/h, gusts 13 mph22 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 66°19°, low 42°6°. Typical 66°19° / 49°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Official NWS forecast
Day: Sunny, with a high near 66. East wind around 3 mph.
Night: Clear, with a low around 42. South wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–67°19°
Low, likely
41°5°–44°7°
Typical high / low
66°19° / 49°9°
Wind
5 mph8 km/h
UV peak
4
Monday, Oct 26. Sunny. High 70°21°, low 51°11°. Typical 66°19° / 48°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Official NWS forecast
Day: Sunny, with a high near 70. Northwest wind 2 to 7 mph.
Night: Clear, with a low around 51. Northwest wind 2 to 6 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–70°21°
Low, likely
41°5°–51°11°
Typical high / low
66°19° / 48°9°
Wind
6 mph10 km/h, gusts 15 mph24 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 68°20°, low 48°9°. Typical 65°18° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 51°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 68.
Night: Mostly clear, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–69°21°
Low, likely
46°8°–52°11°
Typical high / low
65°18° / 48°9°
Wind
7 mph12 km/h, gusts 20 mph32 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 66°19°, low 49°9°. Typical 65°18° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 49°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 66.
Night: Mostly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–67°19°
Low, likely
44°7°–50°10°
Typical high / low
65°18° / 48°9°
Wind
7 mph11 km/h, gusts 16 mph25 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 70°21°, low 50°10°. Typical 65°18° / 47°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
Night: Mostly clear, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–70°21°
Low, likely
47°8°–50°10°
Typical high / low
65°18° / 47°8°
Wind
6 mph10 km/h, gusts 22 mph35 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 74°23°, low 52°11°. Typical 64°18° / 47°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 74.
Night: Mostly clear, with a low around 52.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
74°23°–75°24°
Low, likely
45°7°–52°11°
Typical high / low
64°18° / 47°8°
Wind
5 mph8 km/h, gusts 24 mph38 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 72°22°, low 50°10°. Typical 64°18° / 46°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 72.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–73°23°
Low, likely
45°7°–56°13°
Typical high / low
64°18° / 46°8°
Wind
8 mph13 km/h, gusts 26 mph41 km/h
UV peak
4
Sunday, Nov 1. Drizzle. High 70°21°, low 53°12°. Typical 64°18° / 46°8°. Rain 0.02 in0.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 68°20°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 65°18°
  30% chance · 0.06 in1.4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 62°17°
  30% chance · 0.07 in1.8 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–75°24°
Low, likely
51°11°–55°13°
Typical high / low
64°18° / 46°8°
Wind
9 mph15 km/h, gusts 20 mph32 km/h
UV peak
2
Monday, Nov 2. Drizzle. High 72°22°, low 60°16°. Typical 63°17° / 46°8°. Rain 0.21 in5.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 64°18°
  30% chance · 0.02 in0.5 mm
2. Afternoon
  noon–6 PM
  Cloudy, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 65°18°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–79°26°
Low, likely
57°14°–67°19°
Typical high / low
63°17° / 46°8°
Wind
16 mph26 km/h, gusts 37 mph59 km/h

10 days15 days30 days

The outlook

Today
Dry, high 63°, low 43°.
Tomorrow
Dry, high 66°, low 42°, warming up.
Monday
Dry, high 70°, low 51°, warming up.
Rest of week
Mostly dry, highs 66–74°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (LWX) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Potomac River at Georgetown / Wisconsin Ave

2.5 mi

Below flood stage

Level: 4.9 ft

Forecast peak 5.5 ft Sat 7 PM, action stage

Reading from Sat 4:54 PM · NWS gauge page

Washington Channel at SW Waterfront (IN MLLW)

4.3 mi

Action stage

Level: 4.5 ft

Forecast peak 4.7 ft Sat 7 PM, action stage

Reading from Sat 5:54 PM · NWS gauge page

Potomac River near Washington DC (Little Falls)

5.1 mi

Below flood stage

Level: 3.1 ft
Flow: 3,450 cfs

Forecast peak 3.1 ft Sat 8 PM

Reading from Sat 4:50 PM · NWS gauge page

Four Mile Run at Alexandria

2.5 mi

Below flood stage

Level: 4.1 ft
Flow: 2 cfs

Reading from Sat 5:50 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 60% less heating than a typical week.

This week 24Typical 59

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 17
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at.

Comfort

Dry air outside (dew point 43°F).

Open the windows?

Sun, 12:00 PM–6:00 PM

Good stretch to open the windows.

Is this typical?

Washington Reagan National Airport · official normals 1991–2020 · records 1872–2026

Oct 24, today vs a typical year

Today’s expected high is 3°2° colder than typical.

Last 7 days vs normal

On average 2°1° colder than normal (daily mean temperature).

−7°−4°SunOct 18
−4°−2°MonOct 19
+1°±0°TueOct 20
±0°WedOct 21
−1°ThuOct 22
−1°FriOct 23
—SatOct 24

Arlington weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 50 min; Losing 2 min 21 s a day; shortest Dec 21, 1 h 24 min less
Golden hour: 5:40–6:34 PM; Morning 7:10–8:04 AM
Blue hour: 6:34–6:44 PM; Morning 6:59–7:10 AM; first light 6:59 AM

Stars tonight? Fair

Clear 6:52 PM–7 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:39 AM · rises 5:13 PM
Full moon: Oct 26
New moon: Nov 9

Looking southeast from Arlington. The highest point on the skyline is about 2,500 ft, 30 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Coastal Flood Advisory

Arlington, VA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Potomac River at Georgetown / Wisconsin Ave

Washington Channel at SW Waterfront (IN MLLW)

Potomac River near Washington DC (Little Falls)

Four Mile Run at Alexandria

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon