Frost Advisory
Starts in 9 h 36 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 2:15 PM EDT at KCJR

Warrenton, VA weather

Overcast and 64°18°, jacket by 7 PM.

Mostly agree

Now 64°18°

Cloudy

Wind: Calm; Up to 5 mph8 km/h through 3 AM
Dew point: 41°5°; Comfortable
UV index: 3Moderate; Moderate until 4 PM · peak 4
Air quality: 30Good; Ozone · tomorrow moderate
Pressure: 30.53 inHg1034 hPa; Falling · −0.06 inHg−2.1 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

High 62°17° today at 4 PM
Below 50°10° tonight after 8 PM
Fog tonight 2–4 AM
Low 36°2° tomorrow at 6 AM
Above 50°10° tomorrow by 11 AM

This afternoonNear 61°16° · Clear
TonightDown to 37°3° by 5 AM · Partly cloudy
Tomorrow morningUp to 53°12° by 11 AM · Clear
Tomorrow afternoonUp to 64°18° by 4 PM · Clear
Tomorrow nightDown to 39°4° by 4 AM · Clear
Monday morningUp to 59°15° by 11 AM · Clear
Monday afternoonUp to 70°21° by 2 PM · 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 3p	Sunny	61°16° (likely 59°15° to 62°17°)	61°16°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	46%	14%	3
Sat 4p	Partly sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	44%	17%	1
Sat 5p	Mostly sunny	60°16° (likely 58°14° to 61°16°)	60°16°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	47%	17%	1
Sat 6p	Mostly clear	58°14° (likely 55°13° to 58°14°)	58°14°	0%	2 mph3 km/h from E, gusts 8 mph13 km/h	51%	20%	0
Sat 7p	Mostly clear	53°12° (likely 51°11° to 54°12°)	53°12°	0%	2 mph3 km/h from E, gusts 5 mph8 km/h	64%	23%	0
Sat 8p	Clear	47°8° (likely 47°8° to 51°11°)	47°8°	0%	1 mph2 km/h from E, gusts 6 mph10 km/h	83%	17%	0
Sat 9p	Clear	44°7° (likely 44°7° to 50°10°)	44°7°	0%	1 mph2 km/h from E, gusts 7 mph11 km/h	93%	17%	0
Sat 10p	Clear	43°6° (likely 43°6° to 49°9°)	43°6°	0%	0 mph0 km/h, gusts 7 mph11 km/h	96%	12%	0
Sat 11p	Clear	41°5° (likely 41°5° to 48°9°)	41°5°	0%	1 mph2 km/h from NE, gusts 5 mph8 km/h	100%	14%	0
Sun 12a	Partly cloudy	40°4° (likely 40°4° to 47°8°)	40°4°	0%	1 mph2 km/h from N, gusts 4 mph6 km/h	100%	50%	0
Sun 1a	Mostly cloudy	40°4° (likely 40°4° to 46°8°)	40°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	56%	0
Sun 2a	Fog	39°4° (likely 39°4° to 46°8°)	39°4°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	55%	0
Sun 3a	Fog	38°3° (likely 38°3° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	34%	0
Sun 4a	Clear	38°3° (likely 38°3° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	20%	0
Sun 5a	Clear	37°3° (likely 37°3° to 44°7°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	18%	0
Sun 6a	Clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	1 mph2 km/h from N, gusts 4 mph6 km/h	100%	21%	0
Sun 7a	Clear	36°2° (likely 36°2° to 42°6°)	36°2°	0%	1 mph2 km/h from N, gusts 4 mph6 km/h	100%	15%	0
Sun 8a	Sunny	37°3° (likely 37°3° to 42°6°)	37°3°	0%	1 mph2 km/h from N, gusts 4 mph7 km/h	100%	5%	0
Sun 9a	Sunny	42°6° (likely 42°6° to 46°8°)	42°6°	0%	1 mph2 km/h from N, gusts 5 mph8 km/h	100%	4%	1
Sun 10a	Sunny	49°9° (likely 49°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 5 mph9 km/h	83%	7%	2
Sun 11a	Mostly sunny	53°12° (likely 53°12° to 57°14°)	53°12°	0%	0 mph0 km/h, gusts 6 mph10 km/h	74%	11%	3
Sun 12p	Sunny	57°14° (likely 57°14° to 60°16°)	57°14°	0%	1 mph2 km/h from E, gusts 7 mph11 km/h	64%	14%	4
Sun 1p	Sunny	60°16° (likely 60°16° to 62°17°)	60°16°	0%	1 mph2 km/h from SE, gusts 6 mph10 km/h	58%	15%	4
Sun 2p	Mostly sunny	62°17° (likely 62°17° to 64°18°)	62°17°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	54%	20%	4
Sun 3p	Sunny	63°17° (likely 62°17° to 65°18°)	63°17°	0%	1 mph2 km/h from SE, gusts 6 mph10 km/h	52%	16%	4
Sun 4p	Sunny	64°18° (likely 62°17° to 65°18°)	64°18°	0%	1 mph2 km/h from SE, gusts 7 mph12 km/h	50%	13%	3
Sun 5p	Sunny	63°17° (likely 62°17° to 64°18°)	63°17°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	52%	4%	2
Sun 6p	Clear	60°16° (likely 58°14° to 61°16°)	60°16°	0%	0 mph0 km/h, gusts 5 mph8 km/h	58%	0%	0
Sun 7p	Clear	55°13° (likely 54°12° to 56°13°)	55°13°	0%	0 mph0 km/h, gusts 3 mph5 km/h	69%	0%	0
Sun 8p	Clear	49°9° (likely 49°9° to 54°12°)	49°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	1%	0
Sun 9p	Clear	47°8° (likely 47°8° to 51°11°)	47°8°	0%	0 mph0 km/h, gusts 2 mph4 km/h	93%	2%	0
Sun 10p	Clear	44°7° (likely 44°7° to 49°9°)	44°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	1%	0
Sun 11p	Clear	43°6° (likely 43°6° to 49°9°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Mon 12a	Clear	42°6° (likely 42°6° to 47°8°)	42°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	0%	0
Mon 1a	Clear	42°6° (likely 42°6° to 47°8°)	42°6°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	100%	0%	0
Mon 2a	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	1 mph2 km/h from W, gusts 5 mph8 km/h	100%	0%	0
Mon 3a	Clear	40°4° (likely 40°4° to 45°7°)	40°4°	0%	1 mph2 km/h from W, gusts 5 mph8 km/h	100%	0%	0
Mon 4a	Clear	39°4° (likely 39°4° to 44°7°)	39°4°	0%	1 mph2 km/h from W, gusts 5 mph9 km/h	100%	7%	0
Mon 5a	Clear	39°4° (likely 39°4° to 43°6°)	39°4°	0%	1 mph2 km/h from W, gusts 6 mph10 km/h	100%	11%	0
Mon 6a	Clear	38°3° (likely 38°3° to 43°6°)	38°3°	0%	1 mph2 km/h from W, gusts 6 mph9 km/h	100%	12%	0
Mon 7a	Clear	37°3° (likely 37°3° to 42°6°)	37°3°	0%	1 mph2 km/h from NW, gusts 5 mph8 km/h	100%	21%	0
Mon 8a	Sunny	38°3° (likely 38°3° to 43°6°)	38°3°	0%	1 mph2 km/h from NW, gusts 4 mph7 km/h	100%	20%	0
Mon 9a	Sunny	44°7° (likely 44°7° to 49°9°)	44°7°	0%	1 mph2 km/h from W, gusts 3 mph5 km/h	93%	18%	1
Mon 10a	Sunny	52°11° (likely 51°11° to 55°13°)	52°11°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	74%	0%	2
Mon 11a	Sunny	59°15° (likely 58°14° to 61°16°)	59°15°	0%	0 mph0 km/h, gusts 5 mph8 km/h	60%	0%	3
Mon 12p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 7 mph11 km/h	48%	0%	4
Mon 1p	Sunny	68°20° (likely 65°18° to 68°20°)	68°20°	0%	1 mph2 km/h from NW, gusts 10 mph16 km/h	43%	0%	4
Mon 2p	Sunny	70°21° (likely 66°19° to 70°21°)	70°21°	0%	1 mph2 km/h from NW, gusts 10 mph16 km/h	41%	0%	4

Days ahead

Shaded: typical range for these dates (2024–2026)

Today, Oct 24. Fog. High 62°17°, low 36°2°. Typical 69°21° / 37°3°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Partly sunny, 62°17°
  Dry
2. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
3. Overnight
  midnight–6 AM
  Fog, 37°3°
  Dry
Official NWS forecast
Today: Mostly sunny, with a high near 62. Southeast wind around 5 mph.
Tonight: Patchy fog between 2am and 4am, then areas of frost and patchy fog. Partly cloudy, with a low around 36. Northeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–62°17°
Low, likely
35°2°–39°4°
Typical high / low
69°21° / 37°3°
Wind
6 mph9 km/h, gusts 13 mph20 km/h
UV peak
4
Tomorrow, Oct 25. Fog. High 64°18°, low 37°3°. Typical 70°21° / 37°3°. Dry. Mostly 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. Northeast wind around 1 mph.
Night: Clear, with a low around 37. West wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–65°18°
Low, likely
37°3°–42°6°
Typical high / low
70°21° / 37°3°
Wind
5 mph8 km/h, gusts 11 mph18 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 70°21°, low 48°9°. Typical 69°21° / 37°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Official NWS forecast
Day: Patchy frost between 7am and 8am. Sunny, with a high near 70. Northwest wind around 1 mph.
Night: Mostly clear, with a low around 48.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–70°21°
Low, likely
40°4°–48°9°
Typical high / low
69°21° / 37°3°
Wind
6 mph10 km/h, gusts 14 mph22 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 68°20°, low 45°7°. Typical 69°21° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 68.
Night: Mostly clear, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–68°20°
Low, likely
45°7°–50°10°
Typical high / low
69°21° / 38°3°
Wind
8 mph13 km/h, gusts 17 mph28 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 65°18°, low 47°8°. Typical 68°20° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 65.
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°–47°8°
Typical high / low
68°20° / 38°3°
Wind
6 mph10 km/h, gusts 16 mph26 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 70°21°, low 48°9°. Typical 68°20° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  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 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–70°21°
Low, likely
45°7°–48°9°
Typical high / low
68°20° / 38°3°
Wind
8 mph13 km/h, gusts 24 mph39 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 74°23°, low 51°11°. Typical 69°20° / 38°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°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 74.
Night: Mostly clear, with a low around 51.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
73°23°–74°23°
Low, likely
44°7°–51°11°
Typical high / low
69°20° / 38°3°
Wind
6 mph10 km/h, gusts 27 mph43 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 71°22°, low 49°9°. Typical 69°20° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–73°23°
Low, likely
45°7°–51°11°
Typical high / low
69°20° / 38°3°
Wind
6 mph10 km/h, gusts 26 mph41 km/h
UV peak
4
Sunday, Nov 1. Drizzle. High 69°21°, low 52°11°. Typical 69°21° / 39°4°. Rain 0.07 in1.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 67°20°
  30% chance · 0.02 in0.5 mm
3. Evening
  6 PM–midnight
  Drizzle, 63°17°
  30% chance · 0.04 in1 mm
4. Overnight
  midnight–6 AM
  Drizzle, 61°16°
  30% chance · 0.05 in1.3 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
64°18°–72°22°
Low, likely
49°9°–54°12°
Typical high / low
69°21° / 39°4°
Wind
10 mph17 km/h, gusts 23 mph37 km/h
UV peak
2
Monday, Nov 2. Drizzle. High 71°22°, low 57°14°. Typical 69°21° / 40°4°. Rain 0.53 in13 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 62°17°
  20% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 63°17°
  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
48°9°–64°18°
Typical high / low
69°21° / 40°4°
Wind
15 mph24 km/h, gusts 34 mph55 km/h

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 36°.
Tomorrow
Dry, high 64°, low 37°.
Monday
Dry, high 70°, low 48°, warming up.
Rest of week
Mostly dry, highs 65–74°.

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

Rappahannock River at Remington

13 mi

Below flood stage

Level: 3.2 ft
Flow: 233 cfs

Forecast peak 3.2 ft Sat 8 PM

Reading from Sat 1:15 PM · NWS gauge page

Rappahannock River At Lee Highway

6.2 mi

Level: 3.2 ft

Reading from Sat 2 PM · NWS gauge page

Broad Run at Rollins Ford Road

10 mi

Level: 3.9 ft

Reading from Sat 1:50 PM · NWS gauge page

Cedar Run near Catlett

11 mi

Below flood stage

Level: 2.2 ft
Flow: 19 cfs

Reading from Sat 1:45 PM · NWS gauge page

For your home

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

Heating this week

About 60% less heating than a typical week.

This week 33Typical 83

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 27
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 20 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 41°F).

Open the windows?

Today, 4:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Manassas Regional Davis Field Airport · forecast.blue computed averages, 2024–2026 · records 2024–2026

Oct 24, today vs a typical year

Today’s expected high is 7°4° colder than typical.

Last 7 days vs normal

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

Warrenton 3 SE station, 1897–2016: records and averages

This station closed and is no longer reporting, but has a long history nearby. Its own average annual high was about 65°18°, over its full 1897–2016 record — not an NCEI normal, and not the same station as the computed averages above.

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

Sun & moon

Sun

Daylight: 10 h 51 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 23 min less
Golden hour: 5:43–6:37 PM; Morning 7:13–8:06 AM
Blue hour: 6:37–6:47 PM; Morning 7:02–7:13 AM; first light 7:02 AM

Stars tonight? Fair

Mostly clear 6:47 PM–12 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:42 AM · rises 5:16 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Warrenton. The highest point on the skyline is about 3,900 ft, 34 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