Observed 8:45 AM EDT at KMTN

White Marsh, MD weather

Sunny and 45°7°, jacket by 7 PM.

Mostly agree

Now 45°7°

Sunny

Wind: Calm; Light through 10 PM
Dew point: 43°6°; Comfortable
Humidity: 93%; Air 45°7°, dew point 43°6° · fog or dew likely
UV index: 2Low; Moderate 11 AM–5 PM · peak 4
Air quality: 37Good; PM2.5 (fine particles) · tomorrow moderate
Pressure: 30.58 inHg1036 hPa; Rising slowly · +0.03 inHg+1.2 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 4 PM
Below 50°10° tonight after 9 PM
Low 39°4° tomorrow at 6 AM
Above 50°10° tomorrow by 10 AM

This morningUp to 57°14° by 11 AM · Clear
This afternoonUp to 63°17° by 4 PM · Clear
TonightDown to 40°4° by 5 AM · Clear
Tomorrow morningUp to 60°16° by 11 AM · Clear
Tomorrow afternoonUp to 66°19° by 2 PM · Clear
Tomorrow nightDown to 42°6° by 5 AM · Clear
Monday morningUp to 47°8° by 9 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 10a	Sunny	51°11° (likely 50°10° to 52°11°)	51°11°	0%	2 mph3 km/h from NE, gusts 7 mph11 km/h	66%	4%	2
Sat 11a	Sunny	57°14° (likely 55°13° to 57°14°)	57°14°	0%	3 mph5 km/h from E, gusts 7 mph12 km/h	53%	2%	3
Sat 12p	Sunny	59°15° (likely 58°14° to 60°16°)	59°15°	0%	3 mph5 km/h from E, gusts 8 mph12 km/h	47%	0%	4
Sat 1p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	3 mph5 km/h from E, gusts 7 mph11 km/h	44%	0%	4
Sat 2p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	3 mph5 km/h from E, gusts 7 mph12 km/h	41%	0%	4
Sat 3p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	3 mph5 km/h from E, gusts 6 mph10 km/h	41%	0%	4
Sat 4p	Sunny	63°17° (likely 59°15° to 63°17°)	63°17°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	39%	0%	3
Sat 5p	Sunny	62°17° (likely 58°14° to 62°17°)	62°17°	0%	2 mph3 km/h from E, gusts 6 mph9 km/h	43%	0%	1
Sat 6p	Clear	57°14° (likely 54°12° to 58°14°)	57°14°	0%	1 mph2 km/h from E, gusts 6 mph10 km/h	53%	0%	0
Sat 7p	Clear	53°12° (likely 51°11° to 54°12°)	53°12°	0%	1 mph2 km/h from E, gusts 5 mph7 km/h	61%	0%	0
Sat 8p	Clear	50°10° (likely 50°10° to 52°11°)	50°10°	0%	1 mph2 km/h from E, gusts 4 mph7 km/h	71%	0%	0
Sat 9p	Clear	48°9° (likely 48°9° to 50°10°)	48°9°	0%	0 mph0 km/h, gusts 5 mph7 km/h	77%	0%	0
Sat 10p	Clear	47°8° (likely 47°8° to 50°10°)	47°8°	0%	0 mph0 km/h, gusts 5 mph7 km/h	79%	0%	0
Sat 11p	Clear	46°8° (likely 46°8° to 49°9°)	46°8°	0%	0 mph0 km/h, gusts 4 mph7 km/h	83%	0%	0
Sun 12a	Clear	45°7° (likely 44°7° to 48°9°)	45°7°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	0%	0
Sun 1a	Clear	44°7° (likely 43°6° to 47°8°)	44°7°	0%	0 mph0 km/h, gusts 4 mph7 km/h	93%	0%	0
Sun 2a	Clear	42°6° (likely 41°5° to 47°8°)	42°6°	0%	1 mph2 km/h from N, gusts 5 mph8 km/h	100%	0%	0
Sun 3a	Clear	42°6° (likely 39°4° to 46°8°)	42°6°	0%	1 mph2 km/h from N, gusts 5 mph8 km/h	96%	0%	0
Sun 4a	Clear	41°5° (likely 38°3° to 46°8°)	41°5°	0%	1 mph2 km/h from N, gusts 5 mph8 km/h	100%	0%	0
Sun 5a	Clear	40°4° (likely 38°3° to 45°7°)	40°4°	0%	1 mph2 km/h from N, gusts 6 mph9 km/h	100%	2%	0
Sun 6a	Clear	39°4° (likely 38°3° to 43°6°)	39°4°	0%	1 mph2 km/h from N, gusts 6 mph10 km/h	100%	3%	0
Sun 7a	Sunny	39°4° (likely 37°3° to 42°6°)	39°4°	0%	1 mph2 km/h from N, gusts 6 mph10 km/h	100%	6%	0
Sun 8a	Sunny	40°4° (likely 38°3° to 43°6°)	40°4°	0%	2 mph3 km/h from N, gusts 6 mph10 km/h	100%	8%	0
Sun 9a	Sunny	48°9° (likely 44°7° to 48°9°)	48°9°	0%	2 mph3 km/h from N, gusts 5 mph9 km/h	77%	4%	1
Sun 10a	Sunny	55°13° (likely 53°12° to 55°13°)	55°13°	0%	1 mph2 km/h from NE, gusts 5 mph9 km/h	61%	6%	2
Sun 11a	Sunny	60°16° (likely 57°14° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 4 mph7 km/h	53%	7%	3
Sun 12p	Sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	1 mph2 km/h from E, gusts 4 mph7 km/h	50%	4%	4
Sun 1p	Sunny	65°18° (likely 62°17° to 65°18°)	65°18°	0%	1 mph2 km/h from SE, gusts 5 mph8 km/h	43%	3%	4
Sun 2p	Sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	2 mph3 km/h from S, gusts 5 mph8 km/h	42%	4%	4
Sun 3p	Sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	2 mph3 km/h from S, gusts 6 mph9 km/h	42%	4%	4
Sun 4p	Sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	2 mph3 km/h from SE, gusts 6 mph9 km/h	42%	2%	3
Sun 5p	Sunny	65°18° (likely 62°17° to 65°18°)	65°18°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	43%	0%	1
Sun 6p	Clear	61°16° (likely 57°14° to 61°16°)	61°16°	0%	1 mph2 km/h from SE, gusts 6 mph10 km/h	51%	0%	0
Sun 7p	Clear	55°13° (likely 53°12° to 55°13°)	55°13°	0%	0 mph0 km/h, gusts 4 mph6 km/h	66%	0%	0
Sun 8p	Clear	53°12° (likely 51°11° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 3 mph6 km/h	74%	0%	0
Sun 9p	Clear	49°9° (likely 49°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 3 mph4 km/h	89%	0%	0
Sun 10p	Clear	47°8° (likely 47°8° to 51°11°)	47°8°	0%	0 mph0 km/h, gusts 3 mph5 km/h	96%	0%	0
Sun 11p	Clear	47°8° (likely 46°8° to 50°10°)	47°8°	0%	1 mph2 km/h from W, gusts 5 mph7 km/h	93%	0%	0
Mon 12a	Clear	46°8° (likely 45°7° to 48°9°)	46°8°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	96%	1%	0
Mon 1a	Clear	44°7° (likely 43°6° to 47°8°)	44°7°	0%	1 mph2 km/h from NW, gusts 5 mph7 km/h	100%	0%	0
Mon 2a	Clear	43°6° (likely 41°5° to 46°8°)	43°6°	0%	1 mph2 km/h from NW, gusts 4 mph7 km/h	100%	7%	0
Mon 3a	Clear	43°6° (likely 39°4° to 46°8°)	43°6°	0%	1 mph2 km/h from NW, gusts 4 mph7 km/h	100%	9%	0
Mon 4a	Clear	43°6° (likely 39°4° to 45°7°)	43°6°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	100%	10%	0
Mon 5a	Clear	42°6° (likely 38°3° to 45°7°)	42°6°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	100%	11%	0
Mon 6a	Clear	41°5° (likely 38°3° to 44°7°)	41°5°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	100%	12%	0
Mon 7a	Sunny	40°4° (likely 38°3° to 44°7°)	40°4°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	100%	13%	0
Mon 8a	Sunny	42°6° (likely 39°4° to 46°8°)	42°6°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	100%	15%	0
Mon 9a	Sunny	47°8° (likely 43°6° to 52°11°)	47°8°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	89%	14%	1

Days ahead

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

Today, Oct 24. Sunny. High 63°17°, low 39°4°. Typical 66°19° / 49°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°4°
  Dry
Official NWS forecast
Today: Sunny, with a high near 63. East wind around 3 mph.
Tonight: Patchy fog after 2am. Clear, with a low around 39. Northeast wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–63°17°
Low, likely
37°3°–40°4°
Typical high / low
66°19° / 49°9°
Wind
6 mph10 km/h, gusts 12 mph19 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 66°19°, low 40°4°. Typical 65°18° / 49°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Official NWS forecast
Day: Patchy fog before 8am. Sunny, with a high near 66. East wind around 2 mph.
Night: Clear, with a low around 40. West wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–66°19°
Low, likely
37°3°–42°6°
Typical high / low
65°18° / 49°9°
Wind
6 mph10 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 70°21°, low 50°10°. Typical 65°18° / 49°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  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 70. West wind around 5 mph.
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
38°3°–50°10°
Typical high / low
65°18° / 49°9°
Wind
9 mph14 km/h, gusts 18 mph29 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 66°19°, low 44°7°. Typical 65°18° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 51°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 45°7°
  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 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–68°20°
Low, likely
44°7°–51°11°
Typical high / low
65°18° / 48°9°
Wind
10 mph16 km/h, gusts 23 mph36 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 63°17°, low 48°9°. Typical 64°18° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 63.
Night: Mostly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–63°17°
Low, likely
41°5°–48°9°
Typical high / low
64°18° / 48°9°
Wind
7 mph11 km/h, gusts 16 mph25 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 68°20°, low 51°11°. Typical 64°18° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  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, 49°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Night: Mostly clear, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–68°20°
Low, likely
46°8°–51°11°
Typical high / low
64°18° / 48°9°
Wind
8 mph12 km/h, gusts 25 mph40 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 72°22°, low 50°10°. Typical 64°18° / 47°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°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 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–76°24°
Low, likely
45°7°–50°10°
Typical high / low
64°18° / 47°8°
Wind
12 mph20 km/h, gusts 28 mph45 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 69°21°, low 48°9°. Typical 63°17° / 47°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°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
61°16°–75°24°
Low, likely
45°7°–52°11°
Typical high / low
63°17° / 47°8°
Wind
14 mph22 km/h, gusts 29 mph47 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 66°19°, low 50°10°. Typical 63°17° / 47°8°. Rain 0.02 in0.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  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
58°14°–71°22°
Low, likely
39°4°–55°13°
Typical high / low
63°17° / 47°8°
Wind
9 mph14 km/h, gusts 21 mph33 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 68°20°, low 54°12°. Typical 62°17° / 46°8°. Rain 0.08 in2 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 58°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  30% 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
44°7°–59°15°
Typical high / low
62°17° / 46°8°
Wind
8 mph13 km/h, gusts 19 mph31 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 63°, low 39°.
Tomorrow
Dry, high 66°, low 40°, warming up.
Monday
Dry, high 70°, low 50°, warming up.
Rest of week
Mostly dry, highs 63–72°.

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

Whitemarsh Run at White Marsh

1.0 mi

Below flood stage

Level: 2.8 ft

Reading from Sat 9:05 AM · NWS gauge page

Honeygo Run near White Marsh

1.4 mi

Below flood stage

Level: 0.6 ft
Flow: 2 cfs

Reading from Sat 8:50 AM · NWS gauge page

Whitemarsh Run near Fullerton

2.0 mi

Below flood stage

Level: 1.1 ft
Flow: under 1 cfs

Reading from Sat 8:50 AM · NWS gauge page

Long Green Creek at Glen Arm

5.2 mi

Below flood stage

Level: 1.0 ft
Flow: 4 cfs

Reading from Sat 8:15 AM · NWS gauge page

For your home

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

Heating this week

About 54% less heating than a typical week.

This week 28Typical 60

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 11 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?

Maryland Science Center · official normals 1991–2020 · records 1950–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 1°0° colder than normal (daily mean temperature).

−7°−4°SunOct 18
−3°−2°MonOct 19
+4°+2°TueOct 20
+2°+1°WedOct 21
+2°+1°ThuOct 22
±0°FriOct 23
—SatOct 24

White Marsh weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 49 min; Losing 2 min 21 s a day; shortest Dec 21, 1 h 26 min less
Golden hour: 5:37–6:31 PM; Morning 7:08–8:02 AM
Blue hour: 6:31–6:41 PM; Morning 6:57–7:08 AM; first light 6:57 AM

Stars tonight? Fair

Clear 6:41 PM–6:58 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:37 AM · rises 5:10 PM
Full moon: Oct 26
New moon: Nov 9

Looking north from White Marsh. The highest point on the skyline is about 5,600 ft, 26 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

White Marsh, MD weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Whitemarsh Run at White Marsh

Honeygo Run near White Marsh

Whitemarsh Run near Fullerton

Long Green Creek at Glen Arm

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