Frost Advisory
Starts in 10 h 31 min
When
From 1 AM to 9 AM EDT Sunday.
Where
Portions of central, northeast, and northern Maryland and northern Virginia.
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 Montgomery; Northwest Howard; Northwest Harford; Southeast Harford; Rappahannock; Culpeper; Northern Fauquier; Southern Fauquier; Western Loudoun; Eastern Loudoun; Northwest Prince William; Central and Southeast Prince William/Manassas/Manassas Park
See it on weather.gov (opens in a new tab)

Observed 2:10 PM EDT at KHGR

Graceham, MD weather

Sunny and 59°15°, jacket by 7 PM.

Forecasts agree

Now 59°15°

Sunny

Wind: 8 mph13 km/h; From the south-southeast. Up to 8 mph13 km/h through 2 AM
Dew point: 28°−2°; Dry · up to 38°3° by 3 PM (comfortable)
UV index: 3Moderate; Moderate until 3 PM · peak 4
Air quality: 30Good; Ozone · tomorrow moderate
Pressure: 30.52 inHg1034 hPa; Falling · −0.05 inHg−1.7 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

High 61°16° today at 3 PM
Below 50°10° tonight after 9 PM
Low 36°2° tomorrow at 7 AM
Above 50°10° tomorrow by 10 AM
Fog Monday 7–9 AM

This afternoonNear 61°16° · Clear
TonightDown to 37°3° by 4 AM · Clear
Tomorrow morningUp to 55°13° by 11 AM · Clear
Tomorrow afternoonUp to 64°18° by 3 PM · Clear
Tomorrow nightDown to 39°4° by 4 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 2p	Sunny	60°16° (likely 58°14° to 60°16°)	60°16°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	44%	0%	3
Sat 3p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	3 mph5 km/h from SE, gusts 7 mph10 km/h	42%	0%	2
Sat 4p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	42%	0%	1
Sat 5p	Sunny	61°16° (likely 57°14° to 61°16°)	61°16°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	42%	0%	1
Sat 6p	Clear	58°14° (likely 53°12° to 58°14°)	58°14°	0%	2 mph3 km/h from SE, gusts 5 mph8 km/h	49%	0%	0
Sat 7p	Clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	1 mph2 km/h from SE, gusts 5 mph9 km/h	57%	2%	0
Sat 8p	Clear	50°10° (likely 47°8° to 50°10°)	50°10°	0%	0 mph0 km/h, gusts 3 mph5 km/h	63%	3%	0
Sat 9p	Clear	44°7° (likely 44°7° to 48°9°)	44°7°	0%	0 mph0 km/h, gusts 2 mph4 km/h	79%	0%	0
Sat 10p	Clear	42°6° (likely 42°6° to 47°8°)	42°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	0%	0
Sat 11p	Clear	41°5° (likely 41°5° to 47°8°)	41°5°	0%	0 mph0 km/h, gusts 3 mph6 km/h	89%	0%	0
Sun 12a	Clear	40°4° (likely 40°4° to 46°8°)	40°4°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	0%	0
Sun 1a	Clear	40°4° (likely 40°4° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 1 mph2 km/h	89%	0%	0
Sun 2a	Clear	39°4° (likely 38°3° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	2%	0
Sun 3a	Clear	38°3° (likely 38°3° to 43°6°)	38°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	96%	1%	0
Sun 4a	Clear	37°3° (likely 37°3° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	2%	0
Sun 5a	Clear	37°3° (likely 36°2° to 42°6°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	5%	0
Sun 6a	Clear	37°3° (likely 36°2° to 42°6°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	2%	0
Sun 7a	Clear	36°2° (likely 35°2° to 42°6°)	36°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	5%	0
Sun 8a	Sunny	37°3° (likely 35°2° to 42°6°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	13%	0
Sun 9a	Sunny	43°6° (likely 39°4° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	86%	14%	1
Sun 10a	Sunny	51°11° (likely 48°9° to 52°11°)	51°11°	0%	0 mph0 km/h, gusts 3 mph4 km/h	68%	3%	2
Sun 11a	Sunny	55°13° (likely 53°12° to 56°13°)	55°13°	0%	0 mph0 km/h, gusts 5 mph8 km/h	64%	4%	3
Sun 12p	Sunny	58°14° (likely 56°13° to 59°15°)	58°14°	0%	0 mph0 km/h, gusts 7 mph11 km/h	57%	2%	4
Sun 1p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	1 mph2 km/h from S, gusts 8 mph13 km/h	51%	2%	4
Sun 2p	Sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	2 mph3 km/h from S, gusts 8 mph13 km/h	50%	3%	4
Sun 3p	Sunny	64°18° (likely 61°16° to 64°18°)	64°18°	0%	2 mph3 km/h from S, gusts 9 mph14 km/h	48%	2%	4
Sun 4p	Sunny	64°18° (likely 62°17° to 64°18°)	64°18°	0%	1 mph2 km/h from S, gusts 8 mph14 km/h	48%	1%	3
Sun 5p	Sunny	63°17° (likely 60°16° to 63°17°)	63°17°	0%	1 mph2 km/h from S, gusts 8 mph14 km/h	50%	1%	1
Sun 6p	Clear	60°16° (likely 56°13° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 7 mph11 km/h	55%	0%	0
Sun 7p	Clear	55°13° (likely 52°11° to 55°13°)	55°13°	0%	0 mph0 km/h, gusts 5 mph7 km/h	64%	0%	0
Sun 8p	Clear	49°9° (likely 49°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 5 mph7 km/h	80%	0%	0
Sun 9p	Clear	47°8° (likely 47°8° to 51°11°)	47°8°	0%	0 mph0 km/h, gusts 4 mph6 km/h	83%	0%	0
Sun 10p	Clear	45°7° (likely 45°7° to 50°10°)	45°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	89%	0%	0
Sun 11p	Clear	44°7° (likely 44°7° to 50°10°)	44°7°	0%	0 mph0 km/h, gusts 2 mph3 km/h	93%	0%	0
Mon 12a	Clear	43°6° (likely 43°6° to 48°9°)	43°6°	0%	0 mph0 km/h, gusts 2 mph3 km/h	93%	2%	0
Mon 1a	Clear	42°6° (likely 42°6° to 47°8°)	42°6°	0%	0 mph0 km/h, gusts 2 mph4 km/h	96%	4%	0
Mon 2a	Clear	41°5° (likely 40°4° to 46°8°)	41°5°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	12%	0
Mon 3a	Clear	41°5° (likely 39°4° to 46°8°)	41°5°	0%	0 mph0 km/h, gusts 3 mph4 km/h	96%	13%	0
Mon 4a	Clear	39°4° (likely 39°4° to 46°8°)	39°4°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	13%	0
Mon 5a	Clear	39°4° (likely 39°4° to 46°8°)	39°4°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	15%	0
Mon 6a	Mostly clear	38°3° (likely 38°3° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	24%	0
Mon 7a	Fog	38°3° (likely 38°3° to 43°6°)	38°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	39%	0
Mon 8a	Fog	39°4° (likely 38°3° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	41%	0
Mon 9a	Sunny	44°7° (likely 44°7° to 49°9°)	44°7°	0%	0 mph0 km/h, gusts 3 mph6 km/h	93%	12%	1
Mon 10a	Sunny	51°11° (likely 51°11° to 55°13°)	51°11°	0%	0 mph0 km/h, gusts 5 mph7 km/h	77%	0%	2
Mon 11a	Sunny	58°14° (likely 58°14° to 61°16°)	58°14°	0%	0 mph0 km/h, gusts 8 mph12 km/h	64%	1%	3
Mon 12p	Sunny	62°17° (likely 62°17° to 65°18°)	62°17°	0%	1 mph2 km/h from W, gusts 9 mph14 km/h	56%	0%	4
Mon 1p	Sunny	66°19° (likely 65°18° to 67°19°)	66°19°	0%	2 mph3 km/h from NW, gusts 10 mph16 km/h	48%	2%	4

Days ahead

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

Today, Oct 24. Sunny. High 61°16°, low 36°2°. Typical 63°17° / 40°4°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
2. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Today: Sunny, with a high near 61. Southeast wind around 5 mph.
Tonight: Patchy fog between 3am and 4am, then areas of frost and patchy fog. Clear, with a low around 36. East wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–61°16°
Low, likely
33°1°–39°4°
Typical high / low
63°17° / 40°4°
Wind
7 mph12 km/h, gusts 15 mph24 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 64°18°, low 38°3°. Typical 63°17° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  Dry
Official NWS forecast
Day: Areas of frost and patchy fog before 9am. Sunny, with a high near 64. Southeast wind around 2 mph.
Night: Mostly clear, with a low around 38. Wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
62°17°–64°18°
Low, likely
34°1°–41°5°
Typical high / low
63°17° / 40°4°
Wind
7 mph12 km/h, gusts 12 mph20 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 70°21°, low 47°8°. Typical 62°17° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Official NWS forecast
Day: Sunny, with a high near 70. Northwest wind 0 to 3 mph.
Night: Mostly clear, with a low around 47.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
66°19°–70°21°
Low, likely
38°3°–47°8°
Typical high / low
62°17° / 40°4°
Wind
7 mph12 km/h, gusts 15 mph23 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 66°19°, low 43°6°. Typical 62°17° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 42°6°
  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 43.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–66°19°
Low, likely
43°6°–50°10°
Typical high / low
62°17° / 39°4°
Wind
8 mph12 km/h, gusts 17 mph27 km/h
UV peak
4
Wednesday, Oct 28. Mostly cloudy. High 64°18°, low 46°8°. Typical 62°17° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 46°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 46.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–64°18°
Low, likely
38°3°–46°8°
Typical high / low
62°17° / 39°4°
Wind
8 mph12 km/h, gusts 16 mph26 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 70°21°, low 49°9°. Typical 61°16° / 39°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  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, 48°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 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–70°21°
Low, likely
42°6°–49°9°
Typical high / low
61°16° / 39°4°
Wind
7 mph12 km/h, gusts 21 mph34 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 74°23°, low 51°11°. Typical 61°16° / 38°3°. Dry. Forecasts 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, 58°15°
  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 74.
Night: Mostly clear, with a low around 51.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
72°22°–75°24°
Low, likely
45°7°–51°11°
Typical high / low
61°16° / 38°3°
Wind
7 mph12 km/h, gusts 21 mph33 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 70°21°, low 51°11°. Typical 60°16° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 53°12°
  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
66°19°–74°23°
Low, likely
48°9°–55°13°
Typical high / low
60°16° / 38°3°
Wind
7 mph11 km/h, gusts 22 mph36 km/h
UV peak
4
Sunday, Nov 1. Drizzle. High 67°19°, low 52°11°. Typical 60°16° / 38°3°. Rain 0.04 in1 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  20% chance
3. Evening
  6 PM–midnight
  Drizzle, 64°18°
  30% chance · 0.03 in0.7 mm
4. Overnight
  midnight–6 AM
  Drizzle, 61°16°
  30% chance · 0.09 in2.4 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
61°16°–71°22°
Low, likely
48°9°–55°13°
Typical high / low
60°16° / 38°3°
Wind
9 mph14 km/h, gusts 20 mph32 km/h
UV peak
1
Monday, Nov 2. Showers. High 70°21°, low 59°15°. Typical 60°16° / 37°3°. Rain 0.87 in22 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 62°17°
  20% chance · 0.06 in1.5 mm
2. Afternoon
  noon–6 PM
  Drizzle, 70°21°
  20% chance · 0.12 in3 mm
3. Evening
  6 PM–midnight
  Drizzle, 64°18°
  30% chance · 0.79 in20 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
62°17°–75°24°
Low, likely
55°13°–64°18°
Typical high / low
60°16° / 37°3°
Wind
15 mph24 km/h, gusts 35 mph56 km/h

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 36°.
Tomorrow
Dry, high 64°, low 38°, warming up.
Monday
Dry, high 70°, low 47°, warming up.
Rest of week
Mostly dry, highs 64–74°.

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

Monocacy River near Frederick at Interstate 70

15 mi

Below flood stage

Level: 1.7 ft
Flow: 171 cfs

Forecast peak 1.7 ft Sat 2 PM

Reading from Sat 12:30 PM · NWS gauge page

Antietam Creek near Sharpsburg

22 mi

Below flood stage

Level: 2.4 ft
Flow: 103 cfs

Forecast peak 2.4 ft Sat 2 PM

Reading from Sat 12:15 PM · NWS gauge page

Conococheague Creek at Fairview

24 mi

Below flood stage

Level: 1.7 ft
Flow: 161 cfs

Forecast peak 1.6 ft Sat 2 PM

Reading from Sat 12:45 PM · NWS gauge page

Big Pipe Creek at Bruceville

8.0 mi

Below flood stage

Level: 1.0 ft
Flow: 24 cfs

Reading from Sat 1 PM · NWS gauge page

For your home

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

Heating this week

About 68% less heating than a typical week.

This week 33Typical 101

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 26
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 19 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 28°F).

Open the windows?

Today, 3:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Emmitsburg 2 SE · official normals 1991–2020 · records 1956–2026

Oct 24, today vs a typical year

Today’s expected high is 2°1° colder than typical.

Last 7 days vs normal

On average 6°3° colder than normal (daily mean temperature).

−10°−6°SunOct 18
−7°−4°MonOct 19
±0°TueOct 20
−5°−3°WedOct 21
−4°−2°ThuOct 22
−8°−4°FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 48 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 26 min less
Golden hour: 5:40–6:34 PM; Morning 7:12–8:06 AM
Blue hour: 6:34–6:45 PM; Morning 7:01–7:12 AM; first light 7:01 AM

Stars tonight? Fair

Clear 6:45 PM–7:02 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:41 AM · rises 5:14 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Graceham. The highest point on the skyline is about 2,000 ft, 9 mi away.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

Graceham, MD weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Monocacy River near Frederick at Interstate 70

Antietam Creek near Sharpsburg

Conococheague Creek at Fairview

Big Pipe Creek at Bruceville

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