Observed 7:10 AM EDT at KIAD

Hamilton, VA weather

Clear and 37°3°.

Forecasts agree

Now 37°3°

Clear

Wind: Calm; Light through 7 PM
Dew point: 36°2°; Comfortable
Humidity: 93%; Air 37°3°, dew point 36°2° · fog or dew likely
UV index: 0Low; Moderate 11 AM–5 PM · peak 4
Air quality: 48Good; PM2.5 (fine particles) · tomorrow moderate
Pressure: 30.52 inHg1034 hPa; Rising slowly · +0.04 inHg+1.4 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

11°6° cooler than this time yesterday (46°8° then, 36°2° now)

Good hours for

Above 50°10° today by 10 AM
High 62°17° today at 2 PM
Below 50°10° tonight after 8 PM

This morningUp to 54°12° by 11 AM · Clear
This afternoonUp to 62°17° by 2 PM · Clear
TonightDown to 35°2° by 5 AM · Clear
Tomorrow morningUp to 54°12° by 11 AM · Clear
Tomorrow afternoonUp to 64°18° by 3 PM · Clear
Tomorrow nightDown to 38°3° by 5 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 7a	Sunny	35°2° (likely 35°2° to 40°4°)	35°2°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	15%	0
Sat 8a	Sunny	36°2° (likely 35°2° to 40°4°)	36°2°	0%	0 mph0 km/h, gusts 5 mph9 km/h	100%	21%	0
Sat 9a	Sunny	43°6° (likely 39°4° to 44°7°)	43°6°	0%	1 mph2 km/h from N, gusts 6 mph9 km/h	86%	20%	1
Sat 10a	Sunny	50°10° (likely 47°8° to 50°10°)	50°10°	0%	1 mph2 km/h from NE, gusts 5 mph8 km/h	68%	0%	2
Sat 11a	Sunny	54°12° (likely 53°12° to 55°13°)	54°12°	0%	2 mph3 km/h from E, gusts 8 mph13 km/h	61%	0%	3
Sat 12p	Sunny	57°14° (likely 56°13° to 57°14°)	57°14°	0%	3 mph5 km/h from E, gusts 10 mph16 km/h	53%	0%	4
Sat 1p	Sunny	60°16° (likely 58°14° to 60°16°)	60°16°	0%	3 mph5 km/h from SE, gusts 9 mph14 km/h	47%	0%	4
Sat 2p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	3 mph5 km/h from SE, gusts 8 mph13 km/h	43%	0%	4
Sat 3p	Sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	3 mph5 km/h from SE, gusts 7 mph12 km/h	43%	1%	4
Sat 4p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	3 mph5 km/h from SE, gusts 7 mph11 km/h	44%	2%	3
Sat 5p	Sunny	62°17° (likely 58°14° to 62°17°)	62°17°	0%	3 mph5 km/h from SE, gusts 7 mph11 km/h	44%	5%	2
Sat 6p	Clear	57°14° (likely 55°13° to 57°14°)	57°14°	0%	3 mph5 km/h from SE, gusts 6 mph9 km/h	53%	6%	0
Sat 7p	Clear	51°11° (likely 51°11° to 52°11°)	51°11°	0%	2 mph3 km/h from E, gusts 5 mph8 km/h	66%	6%	0
Sat 8p	Clear	48°9° (likely 48°9° to 50°10°)	48°9°	0%	2 mph3 km/h from E, gusts 7 mph11 km/h	74%	10%	0
Sat 9p	Clear	44°7° (likely 44°7° to 49°9°)	44°7°	0%	1 mph2 km/h from E, gusts 6 mph10 km/h	86%	8%	0
Sat 10p	Clear	42°6° (likely 42°6° to 48°9°)	42°6°	0%	0 mph0 km/h, gusts 7 mph12 km/h	89%	9%	0
Sat 11p	Clear	40°4° (likely 40°4° to 46°8°)	40°4°	0%	0 mph0 km/h, gusts 5 mph9 km/h	96%	4%	0
Sun 12a	Clear	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	96%	9%	0
Sun 1a	Clear	39°4° (likely 39°4° to 44°7°)	39°4°	0%	0 mph0 km/h, gusts 5 mph8 km/h	96%	10%	0
Sun 2a	Clear	37°3° (likely 37°3° to 44°7°)	37°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	16%	0
Sun 3a	Clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	10%	0
Sun 4a	Clear	36°2° (likely 36°2° to 42°6°)	36°2°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	14%	0
Sun 5a	Clear	35°2° (likely 35°2° to 42°6°)	35°2°	0%	0 mph0 km/h, gusts 3 mph6 km/h	100%	13%	0
Sun 6a	Clear	35°2° (likely 35°2° to 41°5°)	35°2°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	13%	0
Sun 7a	Clear	35°2° (likely 35°2° to 40°4°)	35°2°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	15%	0
Sun 8a	Sunny	35°2° (likely 35°2° to 41°5°)	35°2°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	15%	0
Sun 9a	Mostly sunny	43°6° (likely 40°4° to 45°7°)	43°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	86%	16%	1
Sun 10a	Mostly sunny	50°10° (likely 49°9° to 51°11°)	50°10°	0%	0 mph0 km/h, gusts 4 mph7 km/h	71%	12%	2
Sun 11a	Mostly sunny	54°12° (likely 54°12° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 4 mph6 km/h	66%	16%	3
Sun 12p	Sunny	57°14° (likely 56°13° to 60°16°)	57°14°	0%	1 mph2 km/h from SE, gusts 8 mph13 km/h	62%	28%	4
Sun 1p	Sunny	61°16° (likely 57°14° to 61°16°)	61°16°	0%	2 mph3 km/h from SE, gusts 8 mph13 km/h	53%	34%	4
Sun 2p	Sunny	63°17° (likely 59°15° to 63°17°)	63°17°	0%	2 mph3 km/h from S, gusts 8 mph12 km/h	50%	18%	4
Sun 3p	Sunny	64°18° (likely 60°16° to 64°18°)	64°18°	0%	2 mph3 km/h from SE, gusts 8 mph13 km/h	48%	8%	4
Sun 4p	Sunny	64°18° (likely 61°16° to 64°18°)	64°18°	0%	3 mph5 km/h from SE, gusts 7 mph11 km/h	48%	13%	3
Sun 5p	Sunny	64°18° (likely 60°16° to 64°18°)	64°18°	0%	3 mph5 km/h from SE, gusts 7 mph11 km/h	48%	3%	1
Sun 6p	Clear	60°16° (likely 57°14° to 60°16°)	60°16°	0%	1 mph2 km/h from SE, gusts 6 mph9 km/h	55%	1%	0
Sun 7p	Clear	53°12° (likely 53°12° to 55°13°)	53°12°	0%	0 mph0 km/h, gusts 5 mph8 km/h	74%	0%	0
Sun 8p	Clear	50°10° (likely 50°10° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 4 mph7 km/h	83%	0%	0
Sun 9p	Clear	47°8° (likely 47°8° to 52°11°)	47°8°	0%	0 mph0 km/h, gusts 5 mph8 km/h	89%	0%	0
Sun 10p	Clear	44°7° (likely 44°7° to 51°11°)	44°7°	0%	0 mph0 km/h, gusts 5 mph7 km/h	96%	0%	0
Sun 11p	Clear	42°6° (likely 42°6° to 50°10°)	42°6°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	100%	0%	0
Mon 12a	Clear	41°5° (likely 41°5° to 47°8°)	41°5°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	100%	0%	0
Mon 1a	Clear	41°5° (likely 41°5° to 46°8°)	41°5°	0%	1 mph2 km/h from SW, gusts 4 mph6 km/h	96%	1%	0
Mon 2a	Clear	40°4° (likely 40°4° to 46°8°)	40°4°	0%	1 mph2 km/h from SW, gusts 4 mph7 km/h	100%	1%	0
Mon 3a	Mostly clear	40°4° (likely 38°3° to 46°8°)	40°4°	0%	1 mph2 km/h from W, gusts 3 mph5 km/h	96%	8%	0
Mon 4a	Clear	39°4° (likely 36°2° to 45°7°)	39°4°	0%	1 mph2 km/h from W, gusts 3 mph5 km/h	96%	16%	0
Mon 5a	Clear	38°3° (likely 35°2° to 44°7°)	38°3°	0%	1 mph2 km/h from W, gusts 3 mph5 km/h	100%	17%	0
Mon 6a	Clear	37°3° (likely 35°2° to 43°6°)	37°3°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	100%	16%	0

Days ahead

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

Today, Oct 24. Fog. High 62°17°, low 35°2°. Typical 63°17° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Official NWS forecast
Today: Patchy frost and patchy fog before 9am. Sunny, with a high near 62. East wind 0 to 3 mph.
Tonight: Patchy fog between 11pm and 2am, then patchy frost and patchy fog. Clear, with a low around 35. East wind 0 to 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–62°17°
Low, likely
35°2°–40°4°
Typical high / low
63°17° / 41°5°
Wind
7 mph11 km/h, gusts 14 mph22 km/h
UV peak
4
Tomorrow, Oct 25. Fog. High 64°18°, low 36°2°. Typical 63°17° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 38°3°
  Dry
Official NWS forecast
Day: Patchy frost and patchy fog before 9am. Sunny, with a high near 64. Southeast wind 0 to 3 mph.
Night: Clear, with a low around 36. Southwest wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–64°18°
Low, likely
36°2°–40°4°
Typical high / low
63°17° / 41°5°
Wind
8 mph12 km/h
UV peak
4
Monday, Oct 26. Sunny. High 69°21°, low 45°7°. Typical 63°17° / 41°5°. 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, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy frost before 8am. Sunny, with a high near 69. Northwest wind 1 to 6 mph.
Night: Mostly clear, with a low around 45.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–69°21°
Low, likely
35°2°–45°7°
Typical high / low
63°17° / 41°5°
Wind
8 mph12 km/h, gusts 14 mph23 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 66°19°, low 42°6°. Typical 62°17° / 40°4°. 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, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 66.
Night: Partly cloudy, with a low around 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–68°20°
Low, likely
42°6°–48°9°
Typical high / low
62°17° / 40°4°
Wind
7 mph11 km/h, gusts 17 mph27 km/h
UV peak
4
Wednesday, Oct 28. Mostly cloudy. High 63°17°, low 45°7°. Typical 62°17° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 46°8°
  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 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–64°18°
Low, likely
41°5°–47°8°
Typical high / low
62°17° / 40°4°
Wind
8 mph12 km/h, gusts 18 mph29 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 69°21°, low 47°8°. Typical 62°17° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  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, 47°8°
  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 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–69°21°
Low, likely
43°6°–47°8°
Typical high / low
62°17° / 40°4°
Wind
8 mph13 km/h, gusts 18 mph29 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 72°22°, low 47°8°. Typical 61°16° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  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 47.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
71°22°–74°23°
Low, likely
42°6°–48°9°
Typical high / low
61°16° / 39°4°
Wind
12 mph19 km/h, gusts 17 mph28 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 68°20°, low 44°7°. Typical 61°16° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°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
59°15°–72°22°
Low, likely
40°4°–48°9°
Typical high / low
61°16° / 39°4°
Wind
8 mph14 km/h, gusts 15 mph24 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 67°19°, low 50°10°. Typical 60°16° / 39°4°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  20% chance · 0.01 in0.4 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
55°13°–73°23°
Low, likely
39°4°–54°12°
Typical high / low
60°16° / 39°4°
Wind
9 mph14 km/h, gusts 17 mph28 km/h
UV peak
3
Monday, Nov 2. Drizzle. High 68°20°, low 52°11°. Typical 60°16° / 38°3°. Rain 0.06 in1.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 56°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 58°14°
  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
56°13°–75°24°
Low, likely
41°5°–58°14°
Typical high / low
60°16° / 38°3°
Wind
10 mph16 km/h, gusts 20 mph31 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 35°.
Tomorrow
Dry, high 64°, low 36°.
Monday
Dry, high 69°, low 45°, 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

Goose Creek near Leesburg

9.2 mi

Below flood stage

Level: 1.5 ft
Flow: 108 cfs

Forecast peak 1.6 ft Sat 8 AM

Reading from Sat 5:45 AM · NWS gauge page

Potomac River at Edwards Ferry

11 mi

Below flood stage

Level: 3.8 ft

Forecast peak 3.7 ft Sat 8 AM

Reading from Sat 5:45 AM · NWS gauge page

Potomac River at Point of Rocks

12 mi

Below flood stage

Level: 1.9 ft
Flow: 3,130 cfs

Forecast peak 1.6 ft Sat 8 AM

Reading from Sat 6:05 AM · NWS gauge page

Shenandoah River at Millville

12 mi

Below flood stage

Level: 2.0 ft
Flow: 988 cfs

Forecast peak 2.1 ft Sat 2 PM

Reading from Sat 6:30 AM · NWS gauge page

For your home

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

Heating this week

About 65% less heating than a typical week.

This week 34Typical 96

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 25
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 36°F).

Open the windows?

Today, 1:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

PURCELLVILLE · official normals 1991–2020 · records 1900–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

On average 4°2° colder than normal (daily mean temperature).

−8°−5°SunOct 18
−7°−4°MonOct 19
−4°−2°TueOct 20
+1°WedOct 21
−2°−1°ThuOct 22
±0°FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 50 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 25 min less
Golden hour: 5:42–6:36 PM; Morning 7:12–8:06 AM
Blue hour: 6:36–6:46 PM; Morning 7:02–7:12 AM; first light 7:02 AM

Stars tonight? Fair

Clear 6:46 PM–7:03 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:42 AM · rises 5:15 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Hamilton. The highest point on the skyline is about 4,000 ft, 56 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Hamilton, VA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Goose Creek near Leesburg

Potomac River at Edwards Ferry

Potomac River at Point of Rocks

Shenandoah River at Millville

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