Observed 4:15 AM EDT at KCGS

Lanham, MD weather

Clear and 39°4°.

Mostly agree

Now 39°4°

Clear

Wind: Calm; Up to 5 mph8 km/h through 5 PM
Dew point: 38°3°; Comfortable
Humidity: 96%; Air 39°4°, dew point 38°3° · fog or dew likely
UV index: 0Low; Moderate 12–3 PM · peak 4
Air quality: 56Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.49 inHg1033 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

3°2° cooler than this time yesterday (42°5° then, 38°3° now)

Good hours for

Low 38°3° today at 6 AM
Above 50°10° today by 10 AM
High 63°17° today at 2 PM
Below 50°10° tonight after 8 PM

This morningUp to 57°14° by 11 AM · Clear
This afternoonUp to 63°17° by 2 PM · Clear
TonightDown to 37°3° by 5 AM · Clear
Tomorrow morningUp to 57°14° by 11 AM · Clear
Tomorrow afternoonUp to 67°19° by 3 PM · Clear
Tomorrow nightDown to 41°5° by 4 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 5a	Clear	40°4° (likely 39°4° to 43°6°)	38°3°	0%	3 mph5 km/h from N, gusts 6 mph10 km/h	100%	10%	0
Sat 6a	Clear	38°3° (likely 38°3° to 42°6°)	38°3°	0%	2 mph3 km/h from NE, gusts 7 mph11 km/h	100%	16%	0
Sat 7a	Sunny	38°3° (likely 38°3° to 42°6°)	36°2°	0%	3 mph5 km/h from NE, gusts 8 mph13 km/h	100%	17%	0
Sat 8a	Sunny	38°3° (likely 38°3° to 43°6°)	36°2°	0%	3 mph5 km/h from NE, gusts 8 mph13 km/h	100%	17%	0
Sat 9a	Sunny	44°7° (likely 43°6° to 47°8°)	42°6°	0%	3 mph5 km/h from NE, gusts 8 mph12 km/h	93%	14%	0
Sat 10a	Sunny	52°11° (likely 50°10° to 53°12°)	52°11°	0%	5 mph8 km/h from NE, gusts 10 mph15 km/h	71%	1%	1
Sat 11a	Sunny	57°14° (likely 54°12° to 57°14°)	57°14°	0%	5 mph8 km/h from NE, gusts 10 mph16 km/h	62%	7%	2
Sat 12p	Sunny	59°15° (likely 57°14° to 60°16°)	59°15°	0%	5 mph8 km/h from E, gusts 9 mph15 km/h	55%	18%	3
Sat 1p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	5 mph8 km/h from E, gusts 8 mph13 km/h	48%	17%	4
Sat 2p	Sunny	63°17° (likely 60°16° to 63°17°)	63°17°	0%	5 mph8 km/h from E, gusts 7 mph12 km/h	44%	14%	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	44%	12%	2
Sat 4p	Sunny	63°17° (likely 60°16° to 63°17°)	63°17°	0%	5 mph8 km/h from E, gusts 7 mph12 km/h	44%	10%	1
Sat 5p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	5 mph8 km/h from E, gusts 8 mph12 km/h	44%	6%	1
Sat 6p	Clear	59°15° (likely 55°13° to 59°15°)	59°15°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	51%	0%	0
Sat 7p	Clear	53°12° (likely 52°11° to 54°12°)	53°12°	0%	3 mph5 km/h from NE, gusts 6 mph9 km/h	64%	1%	0
Sat 8p	Clear	49°9° (likely 49°9° to 51°11°)	49°9°	0%	2 mph3 km/h from NE, gusts 5 mph8 km/h	77%	6%	0
Sat 9p	Clear	46°8° (likely 46°8° to 49°9°)	46°8°	0%	2 mph3 km/h from NE, gusts 6 mph10 km/h	86%	9%	0
Sat 10p	Clear	44°7° (likely 44°7° to 49°9°)	44°7°	0%	2 mph3 km/h from NE, gusts 6 mph10 km/h	93%	27%	0
Sat 11p	Clear	42°6° (likely 42°6° to 48°9°)	42°6°	0%	2 mph3 km/h from E, gusts 6 mph9 km/h	100%	14%	0
Sun 12a	Clear	41°5° (likely 41°5° to 47°8°)	41°5°	0%	1 mph2 km/h from E, gusts 5 mph8 km/h	100%	11%	0
Sun 1a	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	1 mph2 km/h from NE, gusts 4 mph7 km/h	100%	10%	0
Sun 2a	Clear	40°4° (likely 40°4° to 46°8°)	40°4°	0%	1 mph2 km/h from NE, gusts 4 mph7 km/h	100%	1%	0
Sun 3a	Clear	38°3° (likely 38°3° to 46°8°)	38°3°	0%	1 mph2 km/h from NE, gusts 5 mph8 km/h	100%	2%	0
Sun 4a	Clear	38°3° (likely 38°3° to 45°7°)	38°3°	0%	1 mph2 km/h from NE, gusts 5 mph8 km/h	100%	3%	0
Sun 5a	Clear	37°3° (likely 37°3° to 45°7°)	37°3°	0%	2 mph3 km/h from N, gusts 6 mph10 km/h	100%	6%	0
Sun 6a	Clear	37°3° (likely 37°3° to 44°7°)	37°3°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	100%	6%	0
Sun 7a	Mostly sunny	37°3° (likely 37°3° to 44°7°)	37°3°	0%	2 mph3 km/h from N, gusts 6 mph10 km/h	100%	11%	0
Sun 8a	Sunny	38°3° (likely 38°3° to 44°7°)	38°3°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	100%	4%	0
Sun 9a	Sunny	45°7° (likely 45°7° to 48°9°)	45°7°	0%	2 mph3 km/h from NE, gusts 6 mph10 km/h	93%	3%	1
Sun 10a	Sunny	52°11° (likely 52°11° to 55°13°)	52°11°	0%	2 mph3 km/h from NE, gusts 8 mph13 km/h	74%	2%	2
Sun 11a	Sunny	57°14° (likely 57°14° to 59°15°)	57°14°	0%	2 mph3 km/h from NE, gusts 8 mph14 km/h	64%	3%	3
Sun 12p	Sunny	61°16° (likely 60°16° to 62°17°)	61°16°	0%	2 mph3 km/h from E, gusts 7 mph11 km/h	56%	4%	4
Sun 1p	Sunny	63°17° (likely 61°16° to 64°18°)	63°17°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	50%	8%	4
Sun 2p	Sunny	66°19° (likely 62°17° to 66°19°)	66°19°	0%	1 mph2 km/h from E, gusts 5 mph8 km/h	43%	24%	4
Sun 3p	Sunny	67°19° (likely 62°17° to 67°19°)	67°19°	0%	2 mph3 km/h from E, gusts 5 mph8 km/h	42%	13%	4
Sun 4p	Sunny	67°19° (likely 63°17° to 67°19°)	67°19°	0%	2 mph3 km/h from E, gusts 4 mph7 km/h	42%	6%	3
Sun 5p	Sunny	66°19° (likely 62°17° to 66°19°)	66°19°	0%	2 mph3 km/h from E, gusts 5 mph8 km/h	43%	7%	1
Sun 6p	Clear	61°16° (likely 58°14° to 61°16°)	61°16°	0%	2 mph3 km/h from E, gusts 5 mph7 km/h	51%	4%	0
Sun 7p	Clear	56°13° (likely 53°12° to 56°13°)	56°13°	0%	2 mph3 km/h from SE, gusts 4 mph7 km/h	64%	1%	0
Sun 8p	Clear	51°11° (likely 50°10° to 54°12°)	51°11°	0%	1 mph2 km/h from SE, gusts 5 mph8 km/h	80%	0%	0
Sun 9p	Clear	49°9° (likely 48°9° to 52°11°)	49°9°	0%	1 mph2 km/h from SE, gusts 3 mph4 km/h	86%	0%	0
Sun 10p	Clear	47°8° (likely 47°8° to 51°11°)	47°8°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	93%	0%	0
Sun 11p	Clear	45°7° (likely 45°7° to 50°10°)	45°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	96%	0%	0
Mon 12a	Clear	44°7° (likely 44°7° to 48°9°)	44°7°	0%	0 mph0 km/h, gusts 5 mph8 km/h	96%	0%	0
Mon 1a	Clear	42°6° (likely 42°6° to 47°8°)	42°6°	0%	1 mph2 km/h from SW, gusts 5 mph8 km/h	100%	0%	0
Mon 2a	Clear	42°6° (likely 41°5° to 47°8°)	42°6°	0%	1 mph2 km/h from W, gusts 4 mph7 km/h	100%	1%	0
Mon 3a	Clear	42°6° (likely 39°4° to 50°10°)	42°6°	0%	1 mph2 km/h from W, gusts 3 mph5 km/h	100%	0%	0
Mon 4a	Clear	41°5° (likely 39°4° to 50°10°)	41°5°	0%	2 mph3 km/h from W, gusts 3 mph5 km/h	100%	0%	0

Days ahead

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

Today, Oct 24. Mostly sunny. High 63°17°, low 38°3°. Typical 66°19° / 49°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Today: Sunny, with a high near 63. East wind around 5 mph.
Tonight: Mostly clear, with a low around 38. North wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–63°17°
Low, likely
38°3°–41°5°
Typical high / low
66°19° / 49°9°
Wind
7 mph12 km/h, gusts 13 mph21 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 67°19°, low 38°3°. Typical 66°19° / 49°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 41°5°
  Dry
Official NWS forecast
Day: Patchy frost before 8am. Sunny, with a high near 67. Northeast wind around 2 mph.
Night: Clear, with a low around 38. South wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–67°19°
Low, likely
38°3°–43°6°
Typical high / low
66°19° / 49°9°
Wind
7 mph11 km/h
UV peak
4
Monday, Oct 26. Sunny. High 70°21°, low 49°9°. Typical 66°19° / 48°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 42°6°
  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
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 70.
Night: Clear, with a low around 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–70°21°
Low, likely
37°3°–49°9°
Typical high / low
66°19° / 48°9°
Wind
7 mph12 km/h, gusts 14 mph23 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 66°19°, low 45°7°. Typical 65°18° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 66.
Night: Mostly clear, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–68°20°
Low, likely
45°7°–52°11°
Typical high / low
65°18° / 48°9°
Wind
9 mph15 km/h, gusts 23 mph36 km/h
UV peak
4
Wednesday, Oct 28. Mostly cloudy. High 64°18°, low 47°8°. Typical 65°18° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 64.
Night: Mostly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–64°18°
Low, likely
42°6°–47°8°
Typical high / low
65°18° / 48°9°
Wind
6 mph10 km/h, gusts 16 mph26 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
  Partly sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  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
65°18°–70°21°
Low, likely
44°7°–50°10°
Typical high / low
65°18° / 47°8°
Wind
6 mph10 km/h, gusts 23 mph36 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 72°22°, low 47°8°. Typical 64°18° / 47°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 72.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
72°22°–75°24°
Low, likely
45°7°–49°9°
Typical high / low
64°18° / 47°8°
Wind
9 mph14 km/h, gusts 22 mph35 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 71°22°, low 49°9°. Typical 64°18° / 46°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°15°
  Dry
4. Overnight
  midnight–6 AM
  Partly 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
65°18°–75°24°
Low, likely
43°6°–54°12°
Typical high / low
64°18° / 46°8°
Wind
8 mph13 km/h, gusts 22 mph35 km/h
UV peak
4
Sunday, Nov 1. Cloudy. High 69°21°, low 52°11°. Typical 64°18° / 46°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 58°14°
  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°–73°23°
Low, likely
50°10°–53°12°
Typical high / low
64°18° / 46°8°
Wind
7 mph11 km/h, gusts 19 mph31 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 72°22°, low 58°14°. Typical 63°17° / 46°8°. Rain 0.05 in1.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 61°16°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 64°18°
  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
67°19°–75°24°
Low, likely
58°14°
Typical high / low
63°17° / 46°8°
Wind
7 mph12 km/h, gusts 18 mph29 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 63°, low 38°.
Tomorrow
Dry, high 67°, low 38°, warming up.
Monday
Dry, high 70°, low 49°, warming up.
Rest of week
Mostly dry, highs 64–72°.

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

Unnamed Tributary at Greenbelt

1.9 mi

Level: 0.1 ft

Reading from Sat 3:25 AM · NWS gauge page

Western Branch near Woodmore / Lottsford Road

3.0 mi

Below flood stage

Level: 1.5 ft

Reading from Sat 3:50 AM · NWS gauge page

Unnamed Tributary below Greenbelt Lake near Greenbelt

4.0 mi

Level: 2.0 ft

Reading from Sat 3:10 AM · NWS gauge page

Unnamed Tributary at Bowie

4.5 mi

Level: 2.6 ft

Reading from Sat 12:50 AM · NWS gauge page

For your home

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

Heating this week

About 49% less heating than a typical week.

This week 30Typical 59

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 24
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 17 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 38°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 3°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
—FriOct 23
—SatOct 24

Lanham 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: 5:39–6:33 PM; Morning 7:09–8:03 AM
Blue hour: 6:33–6:43 PM; Morning 6:58–7:09 AM; first light 6:58 AM

Stars tonight? Good

Mostly clear 5:26–6:58 AM; moon 96% lit but below the horizon.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:38 AM · rises 5:12 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Lanham. The highest point on the skyline is about 2,100 ft, 26 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.