Observed 8:55 AM EDT at KCGS

Brock Hall, MD weather

Sunny and 44°7°.

Mostly agree

Now 44°7°

Sunny

Wind: 3 mph5 km/h; From the north. Up to 6 mph10 km/h through 9 PM
Dew point: 41°5°; Comfortable
Humidity: 91%; Air 44°7°, dew point 41°5° · fog or dew likely
UV index: 0Low; Moderate 12–3 PM · peak 4
Air quality: 51Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.56 inHg1035 hPa; Rising slowly · +0.04 inHg+1.4 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Above 50°10° today by 10 AM
High 63°17° today at 3 PM
Below 50°10° tonight after 8 PM
Low 37°3° tonight at 5 AM

This morningUp to 57°14° by 11 AM · Clear
This afternoonUp to 63°17° by 3 PM · Clear
TonightDown to 37°3° 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 40°4° by 5 AM · Clear
Monday morningNear 40°4° · 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 9a	Sunny	46°8° (likely 44°7° to 48°9°)	45°7°	0%	3 mph5 km/h from NE, gusts 8 mph13 km/h	83%	15%	0
Sat 10a	Mostly sunny	52°11° (likely 50°10° to 54°12°)	52°11°	0%	5 mph8 km/h from NE, gusts 9 mph14 km/h	71%	9%	1
Sat 11a	Mostly sunny	57°14° (likely 54°12° to 59°15°)	57°14°	0%	6 mph10 km/h from NE, gusts 11 mph18 km/h	62%	29%	2
Sat 12p	Mostly sunny	59°15° (likely 57°14° to 61°16°)	59°15°	0%	6 mph10 km/h from E, gusts 10 mph16 km/h	55%	21%	3
Sat 1p	Mostly sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	6 mph10 km/h from E, gusts 9 mph15 km/h	48%	25%	4
Sat 2p	Mostly sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	6 mph10 km/h from E, gusts 9 mph14 km/h	46%	20%	3
Sat 3p	Mostly sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	5 mph8 km/h from E, gusts 8 mph13 km/h	44%	17%	2
Sat 4p	Mostly sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	5 mph8 km/h from E, gusts 8 mph13 km/h	44%	13%	1
Sat 5p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	3 mph5 km/h from E, gusts 7 mph12 km/h	46%	9%	1
Sat 6p	Clear	58°14° (likely 56°13° to 58°14°)	58°14°	0%	3 mph5 km/h from E, gusts 6 mph10 km/h	55%	5%	0
Sat 7p	Clear	51°11° (likely 51°11° to 54°12°)	51°11°	0%	3 mph5 km/h from NE, gusts 6 mph9 km/h	71%	9%	0
Sat 8p	Clear	47°8° (likely 47°8° to 52°11°)	47°8°	0%	2 mph3 km/h from NE, gusts 6 mph10 km/h	83%	9%	0
Sat 9p	Mostly clear	45°7° (likely 45°7° to 52°11°)	45°7°	0%	2 mph3 km/h from NE, gusts 7 mph11 km/h	89%	23%	0
Sat 10p	Mostly clear	42°6° (likely 42°6° to 53°12°)	42°6°	0%	2 mph3 km/h from E, gusts 6 mph9 km/h	100%	19%	0
Sat 11p	Clear	41°5° (likely 41°5° to 50°10°)	41°5°	0%	1 mph2 km/h from E, gusts 6 mph9 km/h	100%	9%	0
Sun 12a	Clear	41°5° (likely 41°5° to 48°9°)	41°5°	0%	1 mph2 km/h from E, gusts 5 mph7 km/h	100%	9%	0
Sun 1a	Clear	41°5° (likely 41°5° to 47°8°)	41°5°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	16%	0
Sun 2a	Clear	40°4° (likely 40°4° to 47°8°)	40°4°	0%	1 mph2 km/h from NE, gusts 4 mph7 km/h	100%	6%	0
Sun 3a	Clear	38°3° (likely 38°3° to 47°8°)	38°3°	0%	1 mph2 km/h from NE, gusts 4 mph6 km/h	100%	2%	0
Sun 4a	Clear	38°3° (likely 38°3° to 46°8°)	38°3°	0%	1 mph2 km/h from N, gusts 5 mph8 km/h	100%	4%	0
Sun 5a	Clear	37°3° (likely 37°3° to 46°8°)	37°3°	0%	1 mph2 km/h from N, gusts 6 mph9 km/h	100%	4%	0
Sun 6a	Clear	37°3° (likely 37°3° to 45°7°)	37°3°	0%	2 mph3 km/h from N, gusts 6 mph10 km/h	100%	7%	0
Sun 7a	Sunny	37°3° (likely 37°3° to 45°7°)	37°3°	0%	2 mph3 km/h from N, gusts 6 mph10 km/h	100%	2%	0
Sun 8a	Sunny	38°3° (likely 38°3° to 45°7°)	38°3°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	100%	2%	0
Sun 9a	Sunny	46°8° (likely 46°8° to 50°10°)	46°8°	0%	2 mph3 km/h from N, gusts 6 mph9 km/h	89%	1%	1
Sun 10a	Sunny	52°11° (likely 52°11° to 57°14°)	52°11°	0%	2 mph3 km/h from NE, gusts 9 mph14 km/h	77%	1%	2
Sun 11a	Sunny	57°14° (likely 57°14° to 61°16°)	57°14°	0%	3 mph5 km/h from NE, gusts 9 mph14 km/h	67%	3%	3
Sun 12p	Sunny	61°16° (likely 59°15° to 63°17°)	61°16°	0%	3 mph5 km/h from NE, gusts 7 mph11 km/h	56%	3%	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%	4%	4
Sun 2p	Sunny	65°18° (likely 62°17° to 65°18°)	65°18°	0%	2 mph3 km/h from E, gusts 5 mph9 km/h	46%	12%	4
Sun 3p	Sunny	66°19° (likely 62°17° to 66°19°)	66°19°	0%	2 mph3 km/h from E, gusts 5 mph7 km/h	43%	11%	4
Sun 4p	Sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	2 mph3 km/h from E, gusts 4 mph7 km/h	45%	6%	3
Sun 5p	Sunny	65°18° (likely 62°17° to 65°18°)	65°18°	0%	2 mph3 km/h from E, gusts 5 mph8 km/h	46%	8%	1
Sun 6p	Clear	61°16° (likely 58°14° to 61°16°)	61°16°	0%	2 mph3 km/h from E, gusts 4 mph6 km/h	53%	1%	0
Sun 7p	Clear	55°13° (likely 53°12° to 55°13°)	55°13°	0%	2 mph3 km/h from E, gusts 4 mph7 km/h	66%	0%	0
Sun 8p	Clear	51°11° (likely 51°11° to 53°12°)	51°11°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	80%	0%	0
Sun 9p	Clear	48°9° (likely 48°9° to 52°11°)	48°9°	0%	0 mph0 km/h, gusts 3 mph4 km/h	86%	0%	0
Sun 10p	Clear	46°8° (likely 46°8° to 51°11°)	46°8°	0%	0 mph0 km/h, gusts 2 mph4 km/h	89%	0%	0
Sun 11p	Clear	44°7° (likely 44°7° to 49°9°)	44°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	96%	0%	0
Mon 12a	Clear	43°6° (likely 43°6° to 48°9°)	43°6°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	0%	0
Mon 1a	Clear	43°6° (likely 43°6° to 46°8°)	43°6°	0%	1 mph2 km/h from W, gusts 5 mph7 km/h	96%	1%	0
Mon 2a	Clear	42°6° (likely 42°6° to 46°8°)	42°6°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	100%	1%	0
Mon 3a	Clear	42°6° (likely 41°5° to 46°8°)	42°6°	0%	1 mph2 km/h from W, gusts 3 mph5 km/h	100%	0%	0
Mon 4a	Clear	41°5° (likely 40°4° to 46°8°)	41°5°	0%	2 mph3 km/h from W, gusts 3 mph5 km/h	100%	0%	0
Mon 5a	Clear	40°4° (likely 40°4° to 46°8°)	40°4°	0%	2 mph3 km/h from W, gusts 4 mph6 km/h	100%	16%	0
Mon 6a	Clear	39°4° (likely 39°4° to 46°8°)	39°4°	0%	2 mph3 km/h from W, gusts 4 mph6 km/h	100%	17%	0
Mon 7a	Sunny	38°3° (likely 38°3° to 45°7°)	36°2°	0%	3 mph5 km/h from W, gusts 4 mph6 km/h	100%	25%	0
Mon 8a	Sunny	40°4° (likely 40°4° to 46°8°)	38°3°	0%	3 mph5 km/h from W, gusts 5 mph8 km/h	100%	25%	0

Days ahead

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

Today, Oct 24. Mostly sunny. High 63°17°, low 37°3°. Typical 67°19° / 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Today: Sunny, with a high near 63. East wind around 6 mph.
Tonight: Patchy fog between 11pm and 5am, then patchy frost and patchy fog. Clear, with a low around 37. Northeast wind 0 to 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–63°17°
Low, likely
37°3°–42°6°
Typical high / low
67°19° / 46°8°
Wind
7 mph11 km/h, gusts 15 mph25 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 66°19°, low 38°3°. Typical 66°19° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°4°
  Dry
Official NWS forecast
Day: Patchy frost before 8am. Sunny, with a high near 66. Northeast wind around 3 mph.
Night: Clear, with a low around 38. Southeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–66°19°
Low, likely
38°3°–44°7°
Typical high / low
66°19° / 45°7°
Wind
7 mph11 km/h, gusts 13 mph20 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 70°21°, low 49°9°. Typical 66°19° / 45°7°. 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
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 70. West wind 2 to 6 mph.
Night: Mostly clear, with a low around 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–70°21°
Low, likely
40°4°–49°9°
Typical high / low
66°19° / 45°7°
Wind
7 mph12 km/h, gusts 15 mph24 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 66°19°, low 45°7°. Typical 66°19° / 45°7°. 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, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°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
64°18°–69°21°
Low, likely
45°7°–51°11°
Typical high / low
66°19° / 45°7°
Wind
8 mph14 km/h, gusts 20 mph31 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 64°18°, low 47°8°. Typical 65°18° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly 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
62°17°–65°18°
Low, likely
44°7°–48°9°
Typical high / low
65°18° / 44°7°
Wind
7 mph11 km/h, gusts 18 mph28 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 70°21°, low 50°10°. Typical 65°18° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°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
66°19°–70°21°
Low, likely
46°8°–50°10°
Typical high / low
65°18° / 44°7°
Wind
7 mph11 km/h, gusts 23 mph37 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 72°22°, low 50°10°. Typical 65°18° / 44°7°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 74°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°10°
  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 50.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
72°22°–75°24°
Low, likely
46°8°–50°10°
Typical high / low
65°18° / 44°7°
Wind
9 mph15 km/h, gusts 24 mph38 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 70°21°, low 48°9°. Typical 64°18° / 43°6°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  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°–75°24°
Low, likely
45°7°–50°10°
Typical high / low
64°18° / 43°6°
Wind
10 mph16 km/h, gusts 26 mph42 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 68°20°, low 50°10°. Typical 64°18° / 43°6°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 58°14°
  Dry
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°–73°23°
Low, likely
42°6°–53°12°
Typical high / low
64°18° / 43°6°
Wind
8 mph13 km/h, gusts 20 mph31 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 69°21°, low 55°13°. Typical 63°17° / 43°6°. Rain 0.06 in1.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  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°–76°24°
Low, likely
48°9°–59°15°
Typical high / low
63°17° / 43°6°
Wind
8 mph12 km/h, gusts 20 mph33 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 63°, low 37°.
Tomorrow
Dry, high 66°, 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

Collington Branch near Upper Marlboro / Leeland Road

0.9 mi

Below flood stage

Level: 0.9 ft

Reading from Sat 8 AM · NWS gauge page

Western Branch at Upper Marlboro / Marlboro Country Club

2.1 mi

Below flood stage

Level: 0.6 ft

Reading from Sat 6:50 AM · NWS gauge page

Depot Pond at Upper Marlboro

2.6 mi

Level: 1.4 ft

Reading from Sat 8:40 AM · NWS gauge page

School House Pond at Upper Marlboro

2.6 mi

Level: 2.8 ft

Reading from Sat 8:45 AM · NWS gauge page

For your home

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

Heating this week

About 55% less heating than a typical week.

This week 31Typical 69

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 25
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 18 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 41°F).

Open the windows?

Today, 1:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

National Arboretum Dc · official normals 1991–2020 · records 1948–2026

Oct 24, today vs a typical year

Today’s expected high is 4°2° colder than typical.

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Brock Hall weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 50 min; Losing 2 min 16 s a day; shortest Dec 21, 1 h 24 min less
Golden hour: 5:39–6:32 PM; Morning 7:08–8:02 AM
Blue hour: 6:32–6:43 PM; Morning 6:58–7:08 AM; first light 6:58 AM

Stars tonight? Fair

Clear 6:43 PM–6:59 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

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

Looking east from Brock Hall. A level horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.