Observed 11:30 AM EDT at KDCA

McLean, VA weather

Sunny and 57°14°, jacket by 7 PM.

Mostly agree

Now 57°14°

Sunny

Wind: 6 mph9 km/h; From the north-northeast. Up to 6 mph10 km/h through 12 AM
Dew point: 43°6°; Comfortable
UV index: 3Moderate; Moderate until 3 PM · peak 4
Air quality: 43Good; PM2.5 (fine particles) · tomorrow moderate
Pressure: 30.56 inHg1035 hPa; Falling slowly · −0.02 inHg−0.5 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

High 63°17° today at 2 PM
Below 50°10° tonight after 9 PM
Low 39°4° tomorrow at 7 AM
Above 50°10° tomorrow by 10 AM

This afternoonUp to 63°17° by 2 PM · Clear
TonightDown to 40°4° by 5 AM · Clear
Tomorrow morningUp to 57°14° by 11 AM · Clear
Tomorrow afternoonUp to 66°19° by 2 PM · Clear
Tomorrow nightDown to 41°5° by 5 AM · Clear
Monday morningUp to 58°14° by 11 AM · 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 12p	Sunny	58°14° (likely 58°14° to 59°15°)	58°14°	0%	5 mph8 km/h from E, gusts 9 mph15 km/h	53%	9%	3
Sat 1p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	6 mph10 km/h from E, gusts 9 mph14 km/h	48%	13%	4
Sat 2p	Mostly sunny	63°17° (likely 60°16° to 63°17°)	63°17°	0%	6 mph10 km/h from SE, gusts 8 mph13 km/h	43%	19%	3
Sat 3p	Sunny	63°17° (likely 60°16° to 63°17°)	63°17°	0%	5 mph8 km/h from E, gusts 7 mph11 km/h	43%	15%	2
Sat 4p	Mostly sunny	63°17° (likely 60°16° to 63°17°)	63°17°	0%	5 mph8 km/h from E, gusts 7 mph11 km/h	43%	18%	1
Sat 5p	Mostly sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	5 mph8 km/h from E, gusts 8 mph13 km/h	44%	22%	1
Sat 6p	Clear	58°14° (likely 56°13° to 59°15°)	58°14°	0%	3 mph5 km/h from E, gusts 9 mph15 km/h	53%	23%	0
Sat 7p	Clear	54°12° (likely 52°11° to 55°13°)	54°12°	0%	3 mph5 km/h from E, gusts 6 mph10 km/h	61%	15%	0
Sat 8p	Clear	52°11° (likely 49°9° to 52°11°)	52°11°	0%	3 mph5 km/h from E, gusts 7 mph11 km/h	69%	8%	0
Sat 9p	Clear	49°9° (likely 47°8° to 50°10°)	49°9°	0%	2 mph3 km/h from NE, gusts 6 mph9 km/h	77%	2%	0
Sat 10p	Clear	47°8° (likely 46°8° to 48°9°)	47°8°	0%	1 mph2 km/h from NE, gusts 5 mph8 km/h	83%	31%	0
Sat 11p	Mostly clear	45°7° (likely 45°7° to 48°9°)	45°7°	0%	1 mph2 km/h from E, gusts 5 mph8 km/h	89%	20%	0
Sun 12a	Clear	45°7° (likely 44°7° to 48°9°)	45°7°	0%	1 mph2 km/h from E, gusts 3 mph5 km/h	89%	15%	0
Sun 1a	Clear	44°7° (likely 43°6° to 46°8°)	44°7°	0%	0 mph0 km/h, gusts 3 mph6 km/h	93%	13%	0
Sun 2a	Clear	42°6° (likely 42°6° to 45°7°)	42°6°	0%	0 mph0 km/h, gusts 5 mph7 km/h	100%	13%	0
Sun 3a	Clear	41°5° (likely 41°5° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	10%	0
Sun 4a	Clear	41°5° (likely 40°4° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 5 mph7 km/h	100%	1%	0
Sun 5a	Clear	40°4° (likely 39°4° to 43°6°)	40°4°	0%	1 mph2 km/h from N, gusts 3 mph5 km/h	100%	1%	0
Sun 6a	Clear	40°4° (likely 39°4° to 42°6°)	40°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	1%	0
Sun 7a	Sunny	39°4° (likely 38°3° to 42°6°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	8%	0
Sun 8a	Sunny	40°4° (likely 37°3° to 43°6°)	40°4°	0%	1 mph2 km/h from NW, gusts 3 mph4 km/h	100%	18%	0
Sun 9a	Mostly sunny	46°8° (likely 42°6° to 47°8°)	46°8°	0%	1 mph2 km/h from N, gusts 3 mph5 km/h	86%	21%	1
Sun 10a	Mostly sunny	53°12° (likely 52°11° to 53°12°)	53°12°	0%	1 mph2 km/h from N, gusts 6 mph10 km/h	71%	11%	2
Sun 11a	Sunny	57°14° (likely 57°14° to 59°15°)	57°14°	0%	1 mph2 km/h from NE, gusts 6 mph9 km/h	64%	7%	3
Sun 12p	Sunny	60°16° (likely 60°16° to 62°17°)	60°16°	0%	1 mph2 km/h from E, gusts 5 mph9 km/h	55%	7%	4
Sun 1p	Sunny	64°18° (likely 62°17° to 64°18°)	64°18°	0%	1 mph2 km/h from E, gusts 4 mph7 km/h	48%	5%	4
Sun 2p	Mostly sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	1 mph2 km/h from SE, gusts 5 mph7 km/h	43%	12%	4
Sun 3p	Sunny	66°19° (likely 64°18° to 66°19°)	66°19°	0%	1 mph2 km/h from SE, gusts 5 mph9 km/h	42%	8%	4
Sun 4p	Sunny	66°19° (likely 64°18° to 66°19°)	66°19°	0%	1 mph2 km/h from E, gusts 5 mph8 km/h	43%	10%	3
Sun 5p	Sunny	66°19° (likely 62°17° to 66°19°)	66°19°	0%	1 mph2 km/h from SE, gusts 5 mph8 km/h	43%	12%	1
Sun 6p	Clear	62°17° (likely 59°15° to 62°17°)	62°17°	0%	1 mph2 km/h from SE, gusts 6 mph9 km/h	50%	4%	0
Sun 7p	Clear	57°14° (likely 54°12° to 57°14°)	57°14°	0%	1 mph2 km/h from SE, gusts 5 mph7 km/h	64%	0%	0
Sun 8p	Clear	54°12° (likely 51°11° to 56°13°)	54°12°	0%	1 mph2 km/h from SE, gusts 3 mph6 km/h	74%	0%	0
Sun 9p	Clear	51°11° (likely 49°9° to 53°12°)	51°11°	0%	0 mph0 km/h, gusts 5 mph8 km/h	83%	0%	0
Sun 10p	Clear	49°9° (likely 48°9° to 51°11°)	49°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	89%	0%	0
Sun 11p	Clear	47°8° (likely 46°8° to 50°10°)	47°8°	0%	0 mph0 km/h, gusts 5 mph8 km/h	93%	0%	0
Mon 12a	Clear	45°7° (likely 45°7° to 49°9°)	45°7°	0%	0 mph0 km/h, gusts 5 mph8 km/h	96%	0%	0
Mon 1a	Clear	43°6° (likely 43°6° to 48°9°)	43°6°	0%	1 mph2 km/h from SW, gusts 4 mph6 km/h	100%	0%	0
Mon 2a	Clear	43°6° (likely 43°6° to 46°8°)	43°6°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	100%	6%	0
Mon 3a	Clear	42°6° (likely 42°6° to 45°7°)	42°6°	0%	1 mph2 km/h from W, gusts 3 mph5 km/h	100%	12%	0
Mon 4a	Clear	42°6° (likely 41°5° to 44°7°)	42°6°	0%	2 mph3 km/h from W, gusts 4 mph7 km/h	100%	14%	0
Mon 5a	Clear	41°5° (likely 40°4° to 44°7°)	41°5°	0%	2 mph3 km/h from W, gusts 5 mph7 km/h	100%	15%	0
Mon 6a	Clear	40°4° (likely 39°4° to 44°7°)	40°4°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	100%	21%	0
Mon 7a	Sunny	39°4° (likely 37°3° to 44°7°)	39°4°	0%	2 mph3 km/h from W, gusts 5 mph9 km/h	100%	26%	0
Mon 8a	Sunny	40°4° (likely 35°2° to 46°8°)	40°4°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	100%	23%	0
Mon 9a	Sunny	45°7° (likely 40°4° to 52°11°)	44°7°	0%	3 mph5 km/h from W, gusts 6 mph9 km/h	89%	26%	1
Mon 10a	Mostly sunny	51°11° (likely 49°9° to 56°13°)	51°11°	0%	3 mph5 km/h from W, gusts 7 mph11 km/h	77%	5%	2
Mon 11a	Sunny	58°14° (likely 56°13° to 59°15°)	58°14°	0%	5 mph8 km/h from W, gusts 9 mph14 km/h	64%	0%	3

Days ahead

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

Today, Oct 24. Mostly sunny. High 63°17°, low 39°4°. Typical 66°19° / 49°9°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
2. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 40°4°
  Dry
Official NWS forecast
Today: Sunny, with a high near 63. East wind around 6 mph.
Tonight: Patchy fog after 2am. Mostly clear, with a low around 39. Northeast wind 0 to 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–63°17°
Low, likely
36°2°–39°4°
Typical high / low
66°19° / 49°9°
Wind
6 mph9 km/h, gusts 13 mph22 km/h
UV peak
4
Tomorrow, Oct 25. Fog. High 66°19°, low 39°4°. Typical 66°19° / 49°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 41°5°
  Dry
Official NWS forecast
Day: Patchy fog before 9am. Sunny, with a high near 66. East wind around 1 mph.
Night: Clear, with a low around 39. South wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–66°19°
Low, likely
37°3°–42°6°
Typical high / low
66°19° / 49°9°
Wind
6 mph9 km/h
UV peak
4
Monday, Oct 26. Sunny. High 69°21°, low 49°9°. Typical 66°19° / 48°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Official NWS forecast
Day: Sunny, with a high near 69. West wind 2 to 6 mph.
Night: Clear, with a low around 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–69°21°
Low, likely
35°2°–49°9°
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 67°19°, low 45°7°. Typical 65°18° / 48°9°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 67.
Night: Mostly clear, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–70°21°
Low, likely
45°7°–51°11°
Typical high / low
65°18° / 48°9°
Wind
8 mph12 km/h, gusts 19 mph30 km/h
UV peak
4
Wednesday, Oct 28. Mostly cloudy. High 65°18°, low 47°8°. Typical 65°18° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 65.
Night: Mostly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–66°19°
Low, likely
42°6°–49°9°
Typical high / low
65°18° / 48°9°
Wind
7 mph12 km/h, gusts 17 mph28 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 69°21°, low 49°9°. Typical 65°18° / 47°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  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, 49°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 69.
Night: Mostly clear, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–69°21°
Low, likely
45°7°–50°10°
Typical high / low
65°18° / 47°8°
Wind
7 mph11 km/h, gusts 22 mph36 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 72°22°, low 49°9°. Typical 64°18° / 47°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 61°16°
  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 72.
Night: Mostly clear, with a low around 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
72°22°–74°23°
Low, likely
44°7°–50°10°
Typical high / low
64°18° / 47°8°
Wind
9 mph15 km/h, gusts 26 mph41 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 69°21°, low 48°9°. Typical 64°18° / 46°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  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
60°16°–74°23°
Low, likely
44°7°–51°11°
Typical high / low
64°18° / 46°8°
Wind
10 mph16 km/h, gusts 27 mph44 km/h
UV peak
2
Sunday, Nov 1. Cloudy. High 68°20°, low 52°11°. Typical 64°18° / 46°8°. Rain 0.02 in0.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 56°13°
  20% chance · 0.02 in0.4 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
57°14°–72°22°
Low, likely
47°8°–55°13°
Typical high / low
64°18° / 46°8°
Wind
8 mph13 km/h, gusts 21 mph34 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 68°20°, low 55°13°. Typical 63°17° / 46°8°. Rain 0.09 in2.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  20% chance
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
57°14°–75°24°
Low, likely
49°9°–59°15°
Typical high / low
63°17° / 46°8°
Wind
8 mph13 km/h, gusts 16 mph25 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 63°, low 39°.
Tomorrow
Dry, high 66°, low 39°, warming up.
Monday
Dry, high 69°, low 49°, warming up.
Rest of week
Mostly dry, highs 65–72°.

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

7.3 mi

Below flood stage

Level: 4.1 ft

Forecast peak 5.5 ft Sat 7 PM, action stage

Reading from Sat 9:54 AM · NWS gauge page

Potomac River near Washington DC (Little Falls)

3.5 mi

Below flood stage

Level: 3.1 ft
Flow: 3,510 cfs

Forecast peak 3.1 ft Sat 2 PM

Reading from Sat 9:50 AM · NWS gauge page

Dead Run near McLean

1.4 mi

Below flood stage

Level: 1.1 ft
Flow: under 1 cfs

Reading from Sat 10:25 AM · NWS gauge page

Rocky Run near Tysons Corner (Pulte/McLean Regional Pond)

2.6 mi

Level: 342 ft

Reading from Sat 8:35 AM · NWS gauge page

For your home

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

Heating this week

About 52% less heating than a typical week.

This week 28Typical 59

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 23
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 13 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 43°F).

Open the windows?

Today, 1:00 PM–5:00 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

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

Sun & moon

Sun

Daylight: 10 h 50 min; Losing 2 min 25 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: 6:34–6:45 PM; Morning 7:00–7:10 AM; first light 7:00 AM

Stars tonight? Fair

Mostly clear 11 PM–7:01 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:40 AM · rises 5:14 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from McLean. The highest point on the skyline is about 3,300 ft, 55 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

McLean, 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

Potomac River near Washington DC (Little Falls)

Dead Run near McLean

Rocky Run near Tysons Corner (Pulte/McLean Regional Pond)

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