Potomac River at Edwards Ferry
4.9 mi- Level
- 3.9 ft
Forecast peak 3.9 ft Sat 8 PM
Reading from Sat 4:45 PM · NWS gauge page
1 active weather alert
Frost Advisory
Starts in 6 h 47 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 5:40 PM EDT at KIAD
Ashburn, VA weather
Sunny and 61°16°.
Today: low 36°2° (likely 35°2° to 37°3°), high 63°17° (likely 62°17° to 63°17°).
Now 61°16°
Sunny
- Wind
- 6 mph9 km/h
- From the east. Up to 6 mph9 km/h through 6 AM
- Dew point
- 39°4°
- Comfortable
- UV tomorrow
- 4Moderate
- Moderate 11 AM–5 PM · peak 4
- Air quality
- 32Good
- Ozone · tomorrow moderate
- Pressure
- 30.5 inHg1033 hPa
- Falling slowly · −0.02 inHg−0.6 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
About the same as this time yesterday (63°17° then, 62°17° now)
Good hours for
TonightDown to 39°4° by 5 AM · Clear
Tomorrow morningUp to 55°13° by 11 AM · Clear
Tomorrow afternoonUp to 65°18° by 3 PM · Clear
Tomorrow nightDown to 39°4° by 5 AM · Clear
Monday morningUp to 56°13° by 11 AM · Clear
Monday afternoonUp to 69°21° by 4 PM · Clear
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 6p | Partly cloudy | 59°15° (likely 57°14° to 60°16°) | 59°15° | 0% | 3 mph5 km/h from E, gusts 7 mph12 km/h | 49% | 32% | 0 |
| Sat 7p | Partly cloudy | 55°13° (likely 54°12° to 57°14°) | 55°13° | 0% | 3 mph5 km/h from E, gusts 5 mph8 km/h | 57% | 41% | 0 |
| Sat 8p | Mostly clear | 51°11° (likely 51°11° to 54°12°) | 51°11° | 0% | 3 mph5 km/h from SE, gusts 7 mph11 km/h | 68% | 24% | 0 |
| Sat 9p | Clear | 48°9° (likely 48°9° to 52°11°) | 47°8° | 0% | 3 mph5 km/h from SE, gusts 4 mph7 km/h | 80% | 11% | 0 |
| Sat 10p | Clear | 46°8° (likely 46°8° to 51°11°) | 46°8° | 0% | 1 mph2 km/h from E, gusts 4 mph6 km/h | 86% | 1% | 0 |
| Sat 11p | Clear | 44°7° (likely 44°7° to 49°9°) | 44°7° | 0% | 2 mph3 km/h from E, gusts 4 mph6 km/h | 89% | 12% | 0 |
| Sun 12a | Clear | 43°6° (likely 43°6° to 48°9°) | 43°6° | 0% | 2 mph3 km/h from NE, gusts 3 mph5 km/h | 93% | 16% | 0 |
| Sun 1a | Clear | 43°6° (likely 43°6° to 47°8°) | 43°6° | 0% | 2 mph3 km/h from SW, gusts 3 mph5 km/h | 93% | 17% | 0 |
| Sun 2a | Clear | 42°6° (likely 42°6° to 46°8°) | 42°6° | 0% | 2 mph3 km/h from W, gusts 4 mph7 km/h | 93% | 16% | 0 |
| Sun 3a | Clear | 41°5° (likely 41°5° to 45°7°) | 41°5° | 0% | 2 mph3 km/h from W, gusts 4 mph6 km/h | 92% | 9% | 0 |
| Sun 4a | Clear | 40°4° (likely 40°4° to 44°7°) | 40°4° | 0% | 1 mph2 km/h from W, gusts 3 mph5 km/h | 96% | 8% | 0 |
| Sun 5a | Clear | 39°4° (likely 39°4° to 42°6°) | 39°4° | 0% | 1 mph2 km/h from W, gusts 4 mph6 km/h | 96% | 7% | 0 |
| Sun 6a | Clear | 39°4° (likely 39°4° to 41°5°) | 39°4° | 0% | 1 mph2 km/h from W, gusts 4 mph6 km/h | 96% | 14% | 0 |
| Sun 7a | Sunny | 38°3° (likely 38°3° to 41°5°) | 38°3° | 0% | 2 mph3 km/h from W, gusts 4 mph6 km/h | 96% | 11% | 0 |
| Sun 8a | Sunny | 38°3° (likely 38°3° to 41°5°) | 38°3° | 0% | 1 mph2 km/h from W, gusts 4 mph6 km/h | 100% | 5% | 0 |
| Sun 9a | Sunny | 42°6° (likely 42°6° to 46°8°) | 42°6° | 0% | 1 mph2 km/h from W, gusts 4 mph6 km/h | 96% | 2% | 1 |
| Sun 10a | Sunny | 50°10° (likely 50°10° to 52°11°) | 50°10° | 0% | 1 mph2 km/h from S, gusts 4 mph7 km/h | 77% | 6% | 2 |
| Sun 11a | Sunny | 55°13° (likely 55°13° to 57°14°) | 55°13° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 69% | 4% | 3 |
| Sun 12p | Sunny | 58°14° (likely 58°14° to 61°16°) | 58°14° | 0% | 1 mph2 km/h from S, gusts 4 mph7 km/h | 62% | 5% | 4 |
| Sun 1p | Sunny | 61°16° (likely 61°16° to 63°17°) | 61°16° | 0% | 1 mph2 km/h from S, gusts 5 mph8 km/h | 56% | 8% | 4 |
| Sun 2p | Sunny | 63°17° (likely 63°17° to 64°18°) | 63°17° | 0% | 2 mph3 km/h from S, gusts 6 mph9 km/h | 52% | 8% | 4 |
| Sun 3p | Sunny | 65°18° (likely 64°18° to 65°18°) | 65°18° | 0% | 2 mph3 km/h from S, gusts 7 mph11 km/h | 48% | 7% | 4 |
| Sun 4p | Sunny | 64°18° (likely 64°18° to 65°18°) | 64°18° | 0% | 2 mph3 km/h from S, gusts 7 mph11 km/h | 50% | 12% | 3 |
| Sun 5p | Sunny | 64°18° (likely 63°17° to 65°18°) | 64°18° | 0% | 2 mph3 km/h from S, gusts 6 mph10 km/h | 50% | 7% | 1 |
| Sun 6p | Clear | 61°16° (likely 59°15° to 62°17°) | 61°16° | 0% | 1 mph2 km/h from S, gusts 5 mph8 km/h | 58% | 1% | 0 |
| Sun 7p | Clear | 57°14° (likely 55°13° to 57°14°) | 57°14° | 0% | 2 mph3 km/h from NW, gusts 4 mph7 km/h | 64% | 0% | 0 |
| Sun 8p | Clear | 51°11° (likely 51°11° to 55°13°) | 51°11° | 0% | 1 mph2 km/h from E, gusts 3 mph5 km/h | 80% | 0% | 0 |
| Sun 9p | Clear | 49°9° (likely 49°9° to 54°12°) | 49°9° | 0% | 1 mph2 km/h from S, gusts 3 mph5 km/h | 83% | 0% | 0 |
| Sun 10p | Clear | 47°8° (likely 47°8° to 53°12°) | 47°8° | 0% | 1 mph2 km/h from S, gusts 3 mph5 km/h | 89% | 0% | 0 |
| Sun 11p | Clear | 46°8° (likely 46°8° to 50°10°) | 46°8° | 0% | 1 mph2 km/h from SW, gusts 4 mph6 km/h | 93% | 0% | 0 |
| Mon 12a | Clear | 44°7° (likely 44°7° to 48°9°) | 44°7° | 0% | 1 mph2 km/h from SW, gusts 3 mph5 km/h | 96% | 0% | 0 |
| Mon 1a | Clear | 43°6° (likely 43°6° to 47°8°) | 43°6° | 0% | 1 mph2 km/h from W, gusts 3 mph5 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 3 mph5 km/h | 100% | 2% | 0 |
| Mon 3a | Clear | 41°5° (likely 41°5° to 45°7°) | 41°5° | 0% | 2 mph3 km/h from W, gusts 4 mph6 km/h | 100% | 11% | 0 |
| Mon 4a | Clear | 40°4° (likely 40°4° to 44°7°) | 40°4° | 0% | 1 mph2 km/h from W, gusts 3 mph5 km/h | 100% | 12% | 0 |
| Mon 5a | Clear | 39°4° (likely 39°4° to 44°7°) | 39°4° | 0% | 1 mph2 km/h from W, gusts 3 mph6 km/h | 100% | 13% | 0 |
| Mon 6a | Clear | 39°4° (likely 39°4° to 42°6°) | 39°4° | 0% | 1 mph2 km/h from W, gusts 3 mph4 km/h | 96% | 21% | 0 |
| Mon 7a | Clear | 38°3° (likely 38°3° to 41°5°) | 38°3° | 0% | 1 mph2 km/h from W, gusts 3 mph5 km/h | 96% | 21% | 0 |
| Mon 8a | Sunny | 38°3° (likely 38°3° to 42°6°) | 38°3° | 0% | 1 mph2 km/h from W, gusts 3 mph6 km/h | 96% | 23% | 0 |
| Mon 9a | Sunny | 43°6° (likely 43°6° to 46°8°) | 43°6° | 0% | 1 mph2 km/h from NW, gusts 4 mph6 km/h | 93% | 14% | 1 |
| Mon 10a | Sunny | 49°9° (likely 49°9° to 53°12°) | 49°9° | 0% | 2 mph3 km/h from W, gusts 6 mph10 km/h | 83% | 4% | 2 |
| Mon 11a | Sunny | 56°13° (likely 56°13° to 59°15°) | 56°13° | 0% | 3 mph5 km/h from W, gusts 7 mph12 km/h | 69% | 0% | 3 |
| Mon 12p | Sunny | 61°16° (likely 61°16° to 63°17°) | 61°16° | 0% | 5 mph8 km/h from NW, gusts 9 mph14 km/h | 58% | 6% | 4 |
| Mon 1p | Sunny | 65°18° (likely 65°18° to 66°19°) | 65°18° | 0% | 5 mph8 km/h from NW, gusts 9 mph15 km/h | 50% | 0% | 4 |
| Mon 2p | Sunny | 67°19° (likely 66°19° to 68°20°) | 67°19° | 0% | 6 mph10 km/h from NW, gusts 10 mph16 km/h | 47% | 0% | 4 |
| Mon 3p | Sunny | 68°20° (likely 66°19° to 69°21°) | 68°20° | 0% | 6 mph10 km/h from NW, gusts 11 mph18 km/h | 45% | 0% | 4 |
| Mon 4p | Sunny | 69°21° (likely 66°19° to 69°21°) | 69°21° | 0% | 5 mph8 km/h from NW, gusts 11 mph18 km/h | 47% | 0% | 3 |
| Mon 5p | Sunny | 69°21° (likely 65°18° to 69°21°) | 69°21° | 0% | 3 mph5 km/h from NW, gusts 8 mph13 km/h | 49% | 0% | 1 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Mostly sunny. High 63°17°, low 36°2°. Typical 65°18° / 42°6°. Dry. Forecasts agree.
Evening
6 PM–midnight
Clear, 51°11°Dry
Overnight
midnight–6 AM
Clear, 39°4°Dry
Official NWS forecast
Tonight: Mostly clear, with a low around 36. Southeast wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 62°17°–63°17°
- Low, likely
- 35°2°–37°3°
- Typical high / low
- 65°18° / 42°6°
- Wind
- 6 mph10 km/h, gusts 12 mph19 km/h
- UV peak
- 4
Tomorrow, Oct 25. Sunny. High 65°18°, low 37°3°. Typical 64°18° / 42°6°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 38°3°Dry
Afternoon
noon–6 PM
Sunny, 65°18°Dry
Evening
6 PM–midnight
Clear, 51°11°Dry
Overnight
midnight–6 AM
Clear, 39°4°Dry
Official NWS forecast
Day: Sunny, with a high near 65. Southwest wind around 2 mph.
Night: Mostly clear, with a low around 37. Southwest wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 64°18°–65°18°
- Low, likely
- 37°3°–40°4°
- Typical high / low
- 64°18° / 42°6°
- Wind
- 6 mph9 km/h
- UV peak
- 4
Monday, Oct 26. Mostly sunny. High 70°21°, low 46°8°. Typical 64°18° / 41°5°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 38°3°Dry
Afternoon
noon–6 PM
Sunny, 69°21°Dry
Evening
6 PM–midnight
Clear, 55°13°Dry
Overnight
midnight–6 AM
Clear, 47°8°Dry
Official NWS forecast
Day: Sunny, with a high near 70. Northwest wind 1 to 6 mph.
Night: Mostly clear, with a low around 46. Northwest wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 67°19°–70°21°
- Low, likely
- 38°3°–46°8°
- Typical high / low
- 64°18° / 41°5°
- Wind
- 7 mph12 km/h, gusts 15 mph24 km/h
- UV peak
- 4
Tuesday, Oct 27. Mostly sunny. High 69°21°, low 45°7°. Typical 64°18° / 41°5°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 47°8°Dry
Afternoon
noon–6 PM
Sunny, 66°19°Dry
Evening
6 PM–midnight
Clear, 56°13°Dry
Overnight
midnight–6 AM
Mostly clear, 46°8°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 69.
Night: Mostly clear, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 66°19°–69°21°
- Low, likely
- 43°6°–49°9°
- Typical high / low
- 64°18° / 41°5°
- Wind
- 9 mph15 km/h, gusts 15 mph24 km/h
- UV peak
- 4
Wednesday, Oct 28. Cloudy. High 66°19°, low 47°8°. Typical 64°18° / 41°5°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 46°8°Dry
Afternoon
noon–6 PM
Cloudy, 65°18°Dry
Evening
6 PM–midnight
Cloudy, 56°13°Dry
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 66.
Night: Mostly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 63°17°–66°19°
- Low, likely
- 43°6°–48°9°
- Typical high / low
- 64°18° / 41°5°
- Wind
- 7 mph11 km/h, gusts 16 mph25 km/h
- UV peak
- 4
Thursday, Oct 29. Cloudy. High 71°22°, low 48°9°. Typical 63°17° / 40°4°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 47°8°Dry
Afternoon
noon–6 PM
Sunny, 69°21°Dry
Evening
6 PM–midnight
Clear, 58°14°Dry
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 71.
Night: Mostly clear, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 67°19°–71°22°
- Low, likely
- 46°8°–48°9°
- Typical high / low
- 63°17° / 40°4°
- Wind
- 7 mph11 km/h, gusts 24 mph38 km/h
- UV peak
- 4
Friday, Oct 30. Mostly sunny. High 74°23°, low 49°9°. Typical 63°17° / 40°4°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 46°8°Dry
Afternoon
noon–6 PM
Sunny, 75°24°Dry
Evening
6 PM–midnight
Clear, 61°16°Dry
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 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 74°23°–76°24°
- Low, likely
- 42°6°–49°9°
- Typical high / low
- 63°17° / 40°4°
- Wind
- 8 mph13 km/h, gusts 26 mph42 km/h
- UV peak
- 4
Saturday, Oct 31. Partly sunny. High 72°22°, low 48°9°. Typical 62°17° / 40°4°. Dry. Forecasts differ.
Morning
6 AM–noon
Mostly sunny, 47°8°Dry
Afternoon
noon–6 PM
Cloudy, 71°22°Dry
Evening
6 PM–midnight
Cloudy, 59°15°Dry
Overnight
midnight–6 AM
Cloudy, 55°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 72.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 65°18°–74°23°
- Low, likely
- 44°7°–51°11°
- Typical high / low
- 62°17° / 40°4°
- Wind
- 7 mph11 km/h, gusts 28 mph44 km/h
- UV peak
- 4
Sunday, Nov 1. Drizzle. High 69°21°, low 53°12°. Typical 62°17° / 40°4°. Rain 0.03 in0.8 mm, 30% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 55°13°Dry
Afternoon
noon–6 PM
Cloudy, 67°20°30% chance · 0.01 in0.3 mm
Evening
6 PM–midnight
Drizzle, 64°18°30% chance · 0.06 in1.5 mm
Overnight
midnight–6 AM
Drizzle, 62°17°30% chance · 0.07 in1.8 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°–74°23°
- Low, likely
- 51°11°–57°14°
- Typical high / low
- 62°17° / 40°4°
- Wind
- 10 mph17 km/h, gusts 22 mph35 km/h
- UV peak
- 2
Monday, Nov 2. Drizzle. High 72°22°, low 57°14°. Typical 62°17° / 39°4°. Rain 0.47 in12 mm, 30% chance. Forecasts differ.
Morning
6 AM–noon
Drizzle, 63°17°20% chance · 0.01 in0.4 mm
Afternoon
noon–6 PM
Drizzle, 71°22°Dry
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
- 63°17°–78°26°
- Low, likely
- 50°10°–66°19°
- Typical high / low
- 62°17° / 39°4°
- Wind
- 18 mph28 km/h, gusts 39 mph62 km/h
The outlook
Today
Dry, high 63°, low 36°.
Tomorrow
Dry, high 65°, low 37°.
Monday
Dry, high 70°, low 46°, warming up.
Rest of week
Mostly dry, highs 66–74°.
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
Rivers
NOAA river gauges within 25 mi
Below flood stage
Goose Creek near Leesburg
5.7 mi- Level
- 1.5 ft
- Flow
- 106 cfs
Forecast peak 1.6 ft Sun 2 AM
Reading from Sat 3:45 PM · NWS gauge page
Seneca Creek at Dawsonville
10 mi- Level
- 2.0 ft
- Flow
- 59 cfs
Forecast peak 2.0 ft Sat 8 PM
Reading from Sat 4:50 PM · NWS gauge page
Broad Run near Sterling
2.5 mi- Level
- 1.8 ft
- Flow
- 49 cfs
Reading from Sat 4:40 PM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 66% less heating than a typical week.
This week 30Typical 88
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 15 hours are near freezing and damp, when outdoor units defrost more often.
Comfort
Dry air outside (dew point 39°F).
Open the windows?
Sun, 1:00 PM–6:00 PM
Good stretch to open the windows.
Is this typical?
Washington Dulles International Airport · official normals 1991–2020 · records 1960–2026
Oct 24, today vs a typical year
Today’s expected high is 2°1° colder than typical.
- Normal high / low
- 65°18° / 42°6°
- Forecast high / low
- 63°17° / 36°2°
- Record high
- 84°29° in 2001
- Record low
- 15°−9° in 1969
Last 7 days vs normal
On average 2°1° colder than normal (daily mean temperature).
- −6°−3°SunOct 18
- −3°−2°MonOct 19
- +2°+1°TueOct 20
- ±0°WedOct 21
- −2°−1°ThuOct 22
- −1°FriOct 23
- —SatOct 24
Ashburn weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:28 AM, sunset 6:18 PM.
- Daylight
- 10 h 50 min
- Losing 2 min 21 s a day; shortest Dec 21, 1 h 24 min less
- Golden hour
- 5:41–6:35 PM
- Morning 7:12–8:05 AM
- Blue hour
- 6:35–6:46 PM
- Morning 7:01–7:12 AM; first light 7:01 AM
Stars tonight? Fair
Mostly clear 8 PM–7:02 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
98% lit · growing
- Today
- sets 5:41 AM · rises 5:15 PM
- Full moon
- Oct 26
- New moon
- Nov 9
