Frost Advisory
Ends in 4 h 25 min
When
Until 9 AM EDT this morning.
Where
Carroll, Frederick, Cecil, Northern Baltimore, and Harford Counties in Maryland.
Issued for this forecast zone · National Weather Service Baltimore MD/Washington DC
What, impacts and precautionsHide details
What
Temperatures as low as 33 will result in frost formation.
Impacts
Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Precautionary actions
Take steps now to protect tender plants from the cold.
Areas: Frederick; Carroll; Northern Baltimore; Cecil; Northwest Harford; Southeast Harford
See it on weather.gov (opens in a new tab)

Observed 3:55 AM EDT at KMTN

Cockeysville, MD weather

Clear and 40°4°.

Mostly agree

Now 40°4°

Clear

Wind: Calm; Light through 4 PM
Dew point: 39°4°; Comfortable
Humidity: 95%; Air 40°4°, dew point 39°4° · fog or dew likely
UV index: 0Low; Moderate 11 AM–5 PM · peak 4
Air quality: 61Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.51 inHg1033 hPa; Rising 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

Low 35°2° today at 6 AM
Above 50°10° today by 10 AM
High 63°17° today at 3 PM
Below 50°10° tonight after 8 PM

TonightNear 38°3° · Clear
This morningUp to 56°13° by 11 AM · Clear
This afternoonUp to 63°17° by 3 PM · Clear
TonightDown to 37°3° by 5 AM · Clear
Tomorrow morningUp to 58°14° by 11 AM · Clear
Tomorrow afternoonUp to 66°19° by 3 PM · Clear
Tomorrow nightDown to 43°6° by midnight · 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 4a	Clear	39°4° (likely 38°3° to 42°6°)	39°4°	0%	2 mph3 km/h from NW, gusts 3 mph4 km/h	100%	5%	0
Sat 5a	Clear	37°3° (likely 37°3° to 41°5°)	37°3°	0%	1 mph2 km/h from NW, gusts 4 mph6 km/h	100%	6%	0
Sat 6a	Clear	35°2° (likely 35°2° to 40°4°)	35°2°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	14%	0
Sat 7a	Sunny	35°2° (likely 35°2° to 40°4°)	35°2°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	25%	0
Sat 8a	Sunny	35°2° (likely 35°2° to 40°4°)	35°2°	0%	1 mph2 km/h from N, gusts 4 mph6 km/h	100%	16%	0
Sat 9a	Sunny	44°7° (likely 41°5° to 45°7°)	44°7°	0%	1 mph2 km/h from N, gusts 4 mph7 km/h	79%	13%	1
Sat 10a	Sunny	51°11° (likely 48°9° to 52°11°)	51°11°	0%	1 mph2 km/h from NE, gusts 5 mph9 km/h	63%	1%	2
Sat 11a	Sunny	56°13° (likely 53°12° to 57°14°)	56°13°	0%	2 mph3 km/h from E, gusts 7 mph11 km/h	53%	0%	3
Sat 12p	Sunny	58°14° (likely 56°13° to 59°15°)	58°14°	0%	2 mph3 km/h from E, gusts 8 mph12 km/h	49%	0%	4
Sat 1p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	42%	0%	4
Sat 2p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	41%	0%	4
Sat 3p	Sunny	63°17° (likely 59°15° to 63°17°)	63°17°	0%	3 mph5 km/h from E, gusts 6 mph9 km/h	39%	0%	4
Sat 4p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	41%	0%	3
Sat 5p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	42%	0%	1
Sat 6p	Clear	57°14° (likely 53°12° to 57°14°)	57°14°	0%	2 mph3 km/h from E, gusts 8 mph14 km/h	51%	0%	0
Sat 7p	Clear	51°11° (likely 49°9° to 52°11°)	51°11°	0%	1 mph2 km/h from E, gusts 6 mph10 km/h	66%	0%	0
Sat 8p	Clear	48°9° (likely 47°8° to 50°10°)	48°9°	0%	0 mph0 km/h, gusts 4 mph7 km/h	77%	0%	0
Sat 9p	Clear	45°7° (likely 45°7° to 49°9°)	45°7°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	0%	0
Sat 10p	Clear	43°6° (likely 43°6° to 48°9°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	93%	0%	0
Sat 11p	Clear	42°6° (likely 42°6° to 47°8°)	42°6°	0%	0 mph0 km/h, gusts 3 mph4 km/h	93%	0%	0
Sun 12a	Clear	42°6° (likely 42°6° to 46°8°)	42°6°	0%	0 mph0 km/h, gusts 3 mph4 km/h	93%	0%	0
Sun 1a	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	0 mph0 km/h, gusts 2 mph4 km/h	96%	0%	0
Sun 2a	Clear	40°4° (likely 40°4° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	0%	0
Sun 3a	Clear	40°4° (likely 39°4° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	0%	0
Sun 4a	Clear	38°3° (likely 38°3° to 44°7°)	38°3°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	0%	0
Sun 5a	Clear	37°3° (likely 37°3° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Sun 6a	Clear	37°3° (likely 37°3° to 41°5°)	37°3°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	0%	0
Sun 7a	Sunny	36°2° (likely 36°2° to 41°5°)	36°2°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	0%	0
Sun 8a	Sunny	36°2° (likely 36°2° to 41°5°)	36°2°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	1%	0
Sun 9a	Sunny	45°7° (likely 42°6° to 46°8°)	45°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	86%	2%	1
Sun 10a	Sunny	53°12° (likely 50°10° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 4 mph6 km/h	69%	2%	2
Sun 11a	Sunny	58°14° (likely 55°13° to 58°14°)	58°14°	0%	0 mph0 km/h, gusts 3 mph6 km/h	57%	3%	3
Sun 12p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 5 mph8 km/h	51%	5%	4
Sun 1p	Sunny	64°18° (likely 59°15° to 64°18°)	64°18°	0%	0 mph0 km/h, gusts 4 mph6 km/h	45%	10%	4
Sun 2p	Mostly sunny	65°18° (likely 60°16° to 65°18°)	65°18°	0%	1 mph2 km/h from SW, gusts 5 mph7 km/h	41%	14%	4
Sun 3p	Sunny	66°19° (likely 60°16° to 66°19°)	66°19°	0%	1 mph2 km/h from SW, gusts 5 mph8 km/h	40%	12%	4
Sun 4p	Sunny	66°19° (likely 60°16° to 66°19°)	66°19°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	42%	4%	3
Sun 5p	Sunny	65°18° (likely 59°15° to 65°18°)	65°18°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	43%	2%	1
Sun 6p	Clear	61°16° (likely 56°13° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 4 mph7 km/h	51%	0%	0
Sun 7p	Clear	55°13° (likely 52°11° to 55°13°)	55°13°	0%	0 mph0 km/h, gusts 3 mph4 km/h	66%	1%	0
Sun 8p	Clear	51°11° (likely 50°10° to 51°11°)	51°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	80%	0%	0
Sun 9p	Clear	48°9° (likely 47°8° to 49°9°)	48°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	93%	1%	0
Sun 10p	Clear	46°8° (likely 45°7° to 47°8°)	46°8°	0%	0 mph0 km/h, gusts 3 mph5 km/h	96%	0%	0
Sun 11p	Clear	44°7° (likely 43°6° to 46°8°)	44°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Mon 12a	Clear	43°6° (likely 42°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	0%	0
Mon 1a	Clear	43°6° (likely 41°5° to 47°8°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Mon 2a	Clear	43°6° (likely 41°5° to 47°8°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Mon 3a	Clear	43°6° (likely 40°4° to 51°11°)	43°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	0%	0

Days ahead

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

Today, Oct 24. Fog. High 63°17°, low 35°2°. Typical 66°19° / 49°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Today: Areas of frost and patchy fog before 9am. Sunny, with a high near 63. East wind 0 to 3 mph.
Tonight: Areas of frost and patchy fog. Mostly clear, with a low around 35. Northwest wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–63°17°
Low, likely
35°2°–39°4°
Typical high / low
66°19° / 49°9°
Wind
5 mph8 km/h, gusts 12 mph19 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 66°19°, low 39°4°. Typical 65°18° / 49°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  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, 43°6°
  Dry
Official NWS forecast
Day: Patchy frost and patchy fog before 9am. Sunny, with a high near 66. Northwest wind around 1 mph.
Night: Clear, with a low around 39. Northwest wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–66°19°
Low, likely
36°2°–40°4°
Typical high / low
65°18° / 49°9°
Wind
6 mph9 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 70°21°, low 48°9°. Typical 65°18° / 49°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 42°6°
  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, 51°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 70.
Night: Mostly clear, with a low around 48.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
66°19°–70°21°
Low, likely
38°3°–48°9°
Typical high / low
65°18° / 49°9°
Wind
8 mph13 km/h, gusts 21 mph33 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 65°18°, low 43°6°. Typical 65°18° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 65.
Night: Mostly clear, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–66°19°
Low, likely
43°6°–50°10°
Typical high / low
65°18° / 48°9°
Wind
11 mph17 km/h, gusts 25 mph41 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 62°17°, low 47°8°. Typical 64°18° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 62.
Night: Mostly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–62°17°
Low, likely
40°4°–47°8°
Typical high / low
64°18° / 48°9°
Wind
7 mph12 km/h, gusts 18 mph28 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 69°21°, low 50°10°. Typical 64°18° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  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 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–69°21°
Low, likely
44°7°–50°10°
Typical high / low
64°18° / 48°9°
Wind
8 mph13 km/h, gusts 24 mph38 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 72°22°, low 47°8°. Typical 64°18° / 47°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
67°19°–73°23°
Low, likely
42°6°–50°10°
Typical high / low
64°18° / 47°8°
Wind
9 mph14 km/h, gusts 26 mph42 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 67°19°, low 48°9°. Typical 63°17° / 47°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Partly 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
63°17°–71°22°
Low, likely
44°7°–52°11°
Typical high / low
63°17° / 47°8°
Wind
8 mph13 km/h, gusts 25 mph40 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 65°18°, low 50°10°. Typical 63°17° / 47°8°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 56°13°
  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
59°15°–68°20°
Low, likely
46°8°–53°12°
Typical high / low
63°17° / 47°8°
Wind
9 mph15 km/h, gusts 22 mph35 km/h
UV peak
2
Monday, Nov 2. Cloudy. High 65°18°, low 57°14°. Typical 62°17° / 46°8°. Rain 0.24 in6.1 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 60°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  20% chance · 0.13 in3.2 mm
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  20% chance · 0.06 in1.5 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
63°17°–70°21°
Low, likely
57°14°–58°14°
Typical high / low
62°17° / 46°8°
Wind
16 mph26 km/h, gusts 35 mph56 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 63°, low 35°.
Tomorrow
Dry, high 66°, low 39°, warming up.
Monday
Dry, high 70°, low 48°, warming up.
Rest of week
Mostly dry, highs 62–72°.

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

Beaverdam Run at Cockeysville

1.0 mi

Below flood stage

Level: 3.1 ft
Flow: 249 cfs

Reading from Sat 2:25 AM · NWS gauge page

Baisman Run at Broadmoor

2.5 mi

Below flood stage

Level: 1.1 ft
Flow: under 1 cfs

Reading from Sat 2:20 AM · NWS gauge page

Western Run at Western Run

3.3 mi

Below flood stage

Level: 0.9 ft
Flow: 57 cfs

Reading from Sat 2:35 AM · NWS gauge page

Long Quarter Branch at Lutherville

4.1 mi

Below flood stage

Level: 0.9 ft

Reading from Sat 2:30 AM · NWS gauge page

For your home

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

Heating this week

About 48% less heating than a typical week.

This week 31Typical 60

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 14 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 39°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
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 49 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 26 min less
Golden hour: 5:37–6:31 PM; Morning 7:09–8:03 AM
Blue hour: 6:31–6:42 PM; Morning 6:58–7:09 AM; first light 6:58 AM

Stars tonight? Good

Clear 4:35–6:58 AM; moon 96% lit, sets 5:38 AM.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:38 AM · rises 5:11 PM
Full moon: Oct 26
New moon: Nov 9

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

1 active weather alert

Frost Advisory

Cockeysville, MD weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Beaverdam Run at Cockeysville

Baisman Run at Broadmoor

Western Run at Western Run

Long Quarter Branch at Lutherville

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? Good

Moon