Observed 8:20 PM EDT at KDCA

Lake Barcroft, VA weather

Clear and 55°13°.

Mostly agree

Now 55°13°

Clear

Wind: Calm; Light through 8 AM
Dew point: 43°6°; Comfortable
UV tomorrow: 4Moderate; Moderate 11 AM–5 PM · peak 4
Air quality: 34Good; Ozone · tomorrow moderate
Pressure: 30.54 inHg1034 hPa; Rising slowly · +0.03 inHg+1.0 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 43°6° tonight at 5 AM
Above 50°10° tomorrow by 10 AM
High 66°19° tomorrow at 3 PM

TonightDown to 43°6° 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 59°15° 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 8p	Clear	52°11° (likely 51°11° to 54°12°)	52°11°	0%	3 mph5 km/h from E, gusts 5 mph9 km/h	69%	8%	0
Sat 9p	Clear	51°11° (likely 50°10° to 52°11°)	51°11°	0%	3 mph5 km/h from E, gusts 3 mph5 km/h	74%	12%	0
Sat 10p	Clear	50°10° (likely 49°9° to 52°11°)	49°9°	0%	3 mph5 km/h from E, gusts 3 mph5 km/h	77%	12%	0
Sat 11p	Clear	49°9° (likely 48°9° to 51°11°)	49°9°	0%	2 mph3 km/h from NE, gusts 4 mph7 km/h	80%	12%	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 46°8° to 48°9°)	47°8°	0%	2 mph3 km/h from NE, gusts 3 mph5 km/h	86%	8%	0
Sun 2a	Clear	46°8° (likely 45°7° to 48°9°)	46°8°	0%	2 mph3 km/h from N, gusts 3 mph5 km/h	93%	1%	0
Sun 3a	Clear	45°7° (likely 44°7° to 47°8°)	45°7°	0%	2 mph3 km/h from NE, gusts 3 mph5 km/h	93%	1%	0
Sun 4a	Clear	44°7° (likely 44°7° to 46°8°)	42°6°	0%	3 mph5 km/h from NE, gusts 3 mph5 km/h	96%	4%	0
Sun 5a	Clear	43°6° (likely 43°6° to 45°7°)	41°5°	0%	3 mph5 km/h from NE, gusts 4 mph6 km/h	96%	4%	0
Sun 6a	Clear	43°6° (likely 42°6° to 44°7°)	41°5°	0%	3 mph5 km/h from NE, gusts 5 mph8 km/h	96%	1%	0
Sun 7a	Sunny	43°6° (likely 41°5° to 44°7°)	41°5°	0%	3 mph5 km/h from N, gusts 5 mph8 km/h	96%	0%	0
Sun 8a	Sunny	44°7° (likely 40°4° to 44°7°)	42°6°	0%	3 mph5 km/h from N, gusts 5 mph8 km/h	96%	0%	0
Sun 9a	Sunny	47°8° (likely 46°8° to 49°9°)	47°8°	0%	2 mph3 km/h from NE, gusts 6 mph9 km/h	89%	0%	1
Sun 10a	Sunny	53°12° (likely 53°12° to 54°12°)	53°12°	0%	2 mph3 km/h from NE, gusts 6 mph10 km/h	74%	2%	2
Sun 11a	Sunny	57°14° (likely 57°14° to 59°15°)	57°14°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	67%	2%	3
Sun 12p	Sunny	60°16° (likely 60°16° to 62°17°)	60°16°	0%	2 mph3 km/h from E, gusts 6 mph9 km/h	58%	6%	4
Sun 1p	Sunny	63°17° (likely 62°17° to 64°18°)	63°17°	0%	2 mph3 km/h from E, gusts 6 mph9 km/h	50%	6%	4
Sun 2p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	2 mph3 km/h from SE, gusts 5 mph8 km/h	46%	4%	4
Sun 3p	Mostly sunny	66°19° (likely 64°18° to 66°19°)	66°19°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	43%	8%	4
Sun 4p	Sunny	65°18° (likely 64°18° to 66°19°)	65°18°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	45%	6%	3
Sun 5p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	2 mph3 km/h from SE, gusts 5 mph8 km/h	45%	5%	1
Sun 6p	Clear	62°17° (likely 59°15° to 62°17°)	62°17°	0%	1 mph2 km/h from SE, gusts 5 mph8 km/h	52%	0%	0
Sun 7p	Clear	59°15° (likely 56°13° to 59°15°)	59°15°	0%	2 mph3 km/h from SE, gusts 5 mph8 km/h	57%	1%	0
Sun 8p	Clear	55°13° (likely 53°12° to 56°13°)	55°13°	0%	2 mph3 km/h from SE, gusts 3 mph5 km/h	69%	1%	0
Sun 9p	Clear	52°11° (likely 51°11° to 53°12°)	52°11°	0%	1 mph2 km/h from E, gusts 5 mph8 km/h	77%	0%	0
Sun 10p	Clear	50°10° (likely 50°10° to 52°11°)	50°10°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	83%	0%	0
Sun 11p	Clear	49°9° (likely 48°9° to 51°11°)	49°9°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	86%	0%	0
Mon 12a	Clear	47°8° (likely 47°8° to 50°10°)	47°8°	0%	1 mph2 km/h from SW, gusts 4 mph7 km/h	89%	2%	0
Mon 1a	Clear	46°8° (likely 46°8° to 49°9°)	46°8°	0%	2 mph3 km/h from W, gusts 4 mph7 km/h	93%	1%	0
Mon 2a	Clear	45°7° (likely 45°7° to 47°8°)	45°7°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	93%	1%	0
Mon 3a	Clear	45°7° (likely 44°7° to 46°8°)	45°7°	0%	2 mph3 km/h from W, gusts 5 mph9 km/h	93%	2%	0
Mon 4a	Clear	44°7° (likely 42°6° to 46°8°)	44°7°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	93%	6%	0
Mon 5a	Clear	44°7° (likely 42°6° to 45°7°)	44°7°	0%	2 mph3 km/h from W, gusts 7 mph11 km/h	96%	13%	0
Mon 6a	Clear	44°7° (likely 41°5° to 45°7°)	44°7°	0%	2 mph3 km/h from W, gusts 8 mph13 km/h	93%	13%	0
Mon 7a	Sunny	43°6° (likely 41°5° to 45°7°)	43°6°	0%	2 mph3 km/h from W, gusts 8 mph13 km/h	96%	13%	0
Mon 8a	Sunny	44°7° (likely 41°5° to 45°7°)	44°7°	0%	2 mph3 km/h from W, gusts 8 mph12 km/h	89%	22%	0
Mon 9a	Sunny	48°9° (likely 45°7° to 50°10°)	47°8°	0%	3 mph5 km/h from W, gusts 7 mph11 km/h	83%	20%	1
Mon 10a	Sunny	53°12° (likely 52°11° to 57°14°)	53°12°	0%	3 mph5 km/h from W, gusts 8 mph12 km/h	74%	13%	2
Mon 11a	Sunny	59°15° (likely 57°14° to 61°16°)	59°15°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	62%	6%	3
Mon 12p	Sunny	62°17° (likely 62°17° to 64°18°)	62°17°	0%	3 mph5 km/h from W, gusts 9 mph14 km/h	56%	0%	4
Mon 1p	Sunny	66°19° (likely 66°19° to 66°19°)	66°19°	0%	5 mph8 km/h from NW, gusts 9 mph14 km/h	48%	1%	4
Mon 2p	Sunny	68°20° (likely 67°19° to 68°20°)	68°20°	0%	6 mph10 km/h from NW, gusts 9 mph15 km/h	45%	0%	4
Mon 3p	Sunny	70°21° (likely 67°19° to 70°21°)	70°21°	0%	6 mph10 km/h from NW, gusts 11 mph18 km/h	42%	0%	4
Mon 4p	Sunny	70°21° (likely 67°19° to 70°21°)	70°21°	0%	5 mph8 km/h from NW, gusts 11 mph17 km/h	44%	0%	3
Mon 5p	Sunny	69°21° (likely 66°19° to 69°21°)	69°21°	0%	5 mph8 km/h from NW, gusts 10 mph17 km/h	45%	0%	1
Mon 6p	Clear	66°19° (likely 63°17° to 66°19°)	66°19°	0%	3 mph5 km/h from NW, gusts 5 mph9 km/h	50%	0%	0
Mon 7p	Clear	63°17° (likely 57°14° to 63°17°)	63°17°	0%	3 mph5 km/h from NW, gusts 3 mph5 km/h	58%	0%	0

Days ahead

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

Today, Oct 24. Partly sunny. High 63°17°, low 42°6°. Typical 66°19° / 49°9°. Dry. Mostly agree.
1. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 43°6°
  Dry
Official NWS forecast
Tonight: Mostly clear, with a low around 42. Northeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–64°18°
Low, likely
38°3°–42°6°
Typical high / low
66°19° / 49°9°
Wind
6 mph10 km/h, gusts 13 mph21 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, 44°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°–66°19°
Low, likely
40°4°–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 50°10°. 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, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°10°
  Dry
Official NWS forecast
Day: Sunny, with a high near 70. West wind 2 to 6 mph.
Night: Clear, with a low around 50. 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°–50°10°
Typical high / low
66°19° / 48°9°
Wind
7 mph11 km/h, gusts 14 mph23 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°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°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
65°18°–70°21°
Low, likely
47°8°–52°11°
Typical high / low
65°18° / 48°9°
Wind
7 mph12 km/h, gusts 19 mph31 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, 47°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°–49°9°
Typical high / low
65°18° / 48°9°
Wind
6 mph10 km/h, gusts 13 mph22 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 70°21°, low 50°10°. Typical 65°18° / 47°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°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.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–70°21°
Low, likely
47°8°–50°10°
Typical high / low
65°18° / 47°8°
Wind
6 mph9 km/h, gusts 20 mph32 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, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 62°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
6 mph9 km/h, gusts 14 mph23 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 72°22°, low 51°11°. Typical 64°18° / 46°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 50°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°–58°14°
Typical high / low
64°18° / 46°8°
Wind
7 mph12 km/h, gusts 17 mph28 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 71°22°, low 53°12°. Typical 64°18° / 46°8°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 71°22°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 66°19°
  30% chance · 0.04 in1 mm
4. Overnight
  midnight–6 AM
  Showers, 62°17°
  30% chance · 0.07 in1.9 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
67°19°–75°24°
Low, likely
50°10°–54°12°
Typical high / low
64°18° / 46°8°
Wind
9 mph15 km/h, gusts 29 mph47 km/h
UV peak
4
Monday, Nov 2. Showers. High 74°23°, low 60°16°. Typical 63°17° / 46°8°. Rain 0.22 in5.6 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Showers, 63°17°
  30% chance · 0.06 in1.6 mm
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–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
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 63°, low 42°.
Tomorrow
Dry, high 66°, low 42°, warming up.
Monday
Dry, high 70°, low 50°, 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

6.1 mi

Action stage

Level: 5.8 ft

Forecast peak 5.5 ft Sat 8 PM, action stage

Reading from Sat 6:54 PM · NWS gauge page

Tripps Run at Falls Church, VA

2.2 mi

Below flood stage

Level: 0.8 ft

Reading from Sat 7:15 PM · NWS gauge page

Four Mile Run at HWY 29

2.4 mi

Below flood stage

Level: 1.9 ft
Flow: 1 cfs

Reading from Sat 7:15 PM · NWS gauge page

Holmes Run at Van Dorn Street

2.7 mi

Level: 0.1 ft

Reading from Sat 6:25 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 23Typical 59

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 18
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

Lake Barcroft 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 7:00–7:10 AM; first light 7:00 AM

Stars tonight? Fair

Clear 8:48 PM–7:01 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:39 AM · rises 5:14 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Lake Barcroft. The highest point on the skyline is about 3,300 ft, 56 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.