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Great Falls, Great Falls, Virginia (PWS)
Updated: 10:38 PM EST on November 21, 2009
 |
42.4 °F
Clear
|
| Windchill: |
42 °F
|
| Humidity: |
92% |
| Dew Point: |
40 °F
|
| Wind: |
Calm
|
| Wind Gust: |
0.0 mph
|
| Pressure: |
30.18 in
(Steady)
|
| Visibility: |
10.0 miles
|
| UV: |
0 out of 16 |
| Clouds: |
Clear
-
(Above Ground Level)
|
| Elevation: |
339 ft
|
» Weather History for This Location
|
|
Select a source for your current conditions:
| History & Almanac |
 |
| |
Max Temperature: |
Min Temperature: |
| Normal (KIAD) |
55 °F
|
32 °F
|
| Record (KIAD) |
76 °F
(2007) |
16 °F
(1969) |
| Yesterday |
60 °F
|
42 °F
|
| Yesterday's Heating Degree Days: 14 |
|
Detailed History and Climate (KIAD)
|
|
|
| Today's State Extremes |
|
| Astronomy |
|
| November 21, 2009 |
Rise: |
Set: |
| Actual Time |
6:59 AM EST |
4:51 PM EST |
| Civil Twilight |
6:30 AM EST |
5:20 PM EST |
| Nautical Twilight |
5:57 AM EST |
5:52 PM EST |
| Astronomical Twilight |
5:25 AM EST |
6:24 PM EST |
| Moon |
11:05 AM EST (11/21)
|
9:03 PM EST (11/21)
|
| Length Of Visible Light: |
10h 50m |
| Length of Day |
9h 52m
Tomorrow will be 1m 37s shorter.
|
|
Extended View
|
|
Waxing Crescent, 25% of the Moon is Illuminated
 |
 |
 |
 |
 |
|
Today
|
Nov 24
First Quarter
|
Dec 2
Full
|
Dec 8
Last Quarter
|
Dec 16
New
|
For more information about the solar system:
|
| Washington, D.C. News |
|
Free Weather Stickers® for Your Homepage!
|
|
| Sunday |
Monday |
Tuesday |
Wednesday |
Thursday |
|
56° F
|
41° F
|
49° F
|
45° F
|
56° F
|
45° F
|
61° F
|
41° F
|
56° F
|
38° F
|
|
Partly Cloudy
|
Rain
60% chance of precipitation
|
Chance of Rain
20% chance of precipitation
|
Chance of Rain
30% chance of precipitation
|
Chance of Rain
40% chance of precipitation
|
|
|
|
|
|
|
| Forecast for Fairfax |
|
| Updated: 9:04 PM EST on November 21, 2009 |
|
|
 |
Rest of Tonight
Partly cloudy late this evening...then clearing. Lows in the upper 30s. North winds around 5 mph.
|
 |
Sunday
Mostly sunny. Highs in the upper 50s. North winds around 5 mph.
|
 |
Sunday Night
Mostly cloudy. A slight chance of rain after midnight. Lows in the lower 40s. Northeast winds around 5 mph. Chance of rain 20 percent.
|
 |
Monday
Rain likely. Highs in the lower 50s. Northeast winds 5 to 10 mph. Chance of rain 70 percent.
|
 |
Monday Night
Cloudy with a 50 percent chance of rain. Lows in the mid 40s. North winds 5 to 10 mph.
|
 |
Tuesday
Mostly cloudy. Highs in the upper 50s.
|
|
Tuesday Night
Mostly cloudy with a 30 percent chance of showers. Lows in the mid 40s.
|
 |
Wednesday
Mostly cloudy with a 30 percent chance of showers. Highs in the lower 60s.
|
|
Wednesday Night
Mostly cloudy with a 50 percent chance of showers. Lows in the mid 40s.
|
|
Thanksgiving Day
Cloudy with a 50 percent chance of showers. Highs in the upper 50s.
|
|
Thursday Night
Mostly cloudy with a 40 percent chance of showers. Lows in the upper 30s.
|
|
Friday
Mostly cloudy. Highs in the upper 40s.
|
|
Friday Night
Mostly cloudy. Lows in the mid 30s.
|
 |
Saturday
Sunny. Highs in the lower 50s.
|
| Alternate Computer Forecast: AVN MOS Weather Graph |
| Air quality Forecast for Northern Virginia |
|
| Sports Weather |
 |
| Blogs in This Area |
|
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|
|
| Weather Stations |
|
| Station Location |
Temp. |
Dew Point |
Humidity |
Wind |
Pressure |
Precipitation |
Windchill |
Elevation |
Updated |
Type |
|
|
VADOT Site_G, Herndon, VA
|
49 °F
|
42 °F
|
75% |
|
-
|
0.00 in
/ hr |
47 °F
|
339 ft |
10:07 PM EST |
MADIS |
Website |
|
Great Falls, Great Falls, VA
|
42.4 °F
|
40 °F
|
92% |
|
30.18 in
|
0.00 in
/ hr |
42 °F
|
339 ft |
10:38 PM EST |
Rapid Fire |
|
|
APRSWXNET Great Falls VA , Sterling, VA
|
40 °F
|
38 °F
|
94% |
|
30.21 in
|
0.00 in
/ hr |
40 °F
|
321 ft |
10:15 PM EST |
MADIS |
Website |
|
Colvin Run at Hunter Mill Rd (One Lane B, Vienna, VA
|
40.3 °F
|
39 °F
|
95% |
|
30.20 in
|
0.00 in
/ hr |
40 °F
|
295 ft |
10:35 PM EST |
Normal |
|
|
Cedar Cove Cluster, Reston, VA
|
46.2 °F
|
40 °F
|
80% |
|
30.16 in
|
0.00 in
/ hr |
46 °F
|
350 ft |
10:38 PM EST |
Rapid Fire |
|
|
Lake Fairfax, Vienna, VA
|
38.9 °F
|
36 °F
|
91% |
|
29.93 in
|
0.00 in
/ hr |
39 °F
|
275 ft |
10:38 PM EST |
Rapid Fire |
Website |
|
Hickory Creek, Great Falls, VA
|
42.3 °F
|
40 °F
|
90% |
|
30.13 in
|
0.00 in
/ hr |
42 °F
|
350 ft |
10:38 PM EST |
Rapid Fire |
Website |
|
Weatherscience.net, Potomac Falls, VA
|
43.7 °F
|
42 °F
|
92% |
|
29.88 in
|
0.00 in
/ hr |
44 °F
|
276 ft |
10:38 PM EST |
Rapid Fire |
Website |
|
Hawk Ridge Subdivision (South), Reston, VA
|
40.2 °F
|
38 °F
|
90% |
|
30.15 in
|
0.00 in
/ hr |
40 °F
|
300 ft |
10:31 PM EST |
Normal |
Website |
|
Jim's Front Porch, Oak Hill, VA, VA
|
43.2 °F
|
38 °F
|
82% |
|
30.21 in
|
0.00 in
/ hr |
43 °F
|
406 ft |
10:36 PM EST |
Normal |
|
|
APRSWXNET Great Falls V, Great Falls, VA
|
42 °F
|
38 °F
|
85% |
|
30.14 in
|
0.00 in
/ hr |
42 °F
|
296 ft |
10:03 PM EST |
MADIS |
Website |
|
Brookfield, Chantilly, VA
|
46.6 °F
|
33 °F
|
58% |
|
29.68 in
|
0.00 in
/ hr |
47 °F
|
260 ft |
10:20 PM EST |
Normal |
|
|
Falcon Ridge, Great Falls, VA
|
40.4 °F
|
39 °F
|
95% |
|
30.18 in
|
0.00 in
/ hr |
40 °F
|
275 ft |
10:30 PM EST |
Normal |
|
|
VADOT Dulles_Toll_Rd_W_MP25, Chantilly, VA
|
49 °F
|
41 °F
|
73% |
|
-
|
0.00 in
/ hr |
49 °F
|
406 ft |
10:09 PM EST |
MADIS |
Website |
|
VADOT Site_C, Oakton, VA
|
50 °F
|
42 °F
|
74% |
|
-
|
0.00 in
/ hr |
- |
290 ft |
9:45 PM EST |
MADIS |
Website |
|
Ashburn Manor, Ashburn, VA
|
44.4 °F
|
37 °F
|
75% |
|
30.12 in
|
0.00 in
/ hr |
44 °F
|
285 ft |
10:38 PM EST |
Rapid Fire |
|
|
Broadlands Southern Walk, Ashburn, VA
|
47.3 °F
|
39 °F
|
73% |
|
29.94 in
|
0.00 in
/ hr |
47 °F
|
320 ft |
10:38 PM EST |
Rapid Fire |
|
|
Trott Ave, Vienna, VA
|
45.9 °F
|
42 °F
|
86% |
|
30.20 in
|
-
/ hr |
46 °F
|
415 ft |
10:26 PM EST |
Normal |
|
|
VADOT Site_E, Oakton, VA
|
50 °F
|
43 °F
|
77% |
|
-
|
0.00 in
/ hr |
- |
353 ft |
10:06 PM EST |
MADIS |
Website |
|
Brambleton, Brambleton, VA
|
47.8 °F
|
43 °F
|
83% |
|
30.17 in
|
0.00 in
/ hr |
48 °F
|
310 ft |
10:38 PM EST |
Rapid Fire |
|
|
Ridings at Blue Springs, Chantilly, VA
|
46.1 °F
|
42 °F
|
87% |
|
30.19 in
|
0.00 in
/ hr |
46 °F
|
303 ft |
10:36 PM EST |
Normal |
Website |
|
Beulah-Wolf Trap, Vienna, VA
|
42.3 °F
|
39 °F
|
89% |
|
30.17 in
|
0.00 in
/ hr |
42 °F
|
430 ft |
10:38 PM EST |
Rapid Fire |
Website |
|
Broadlands West, Broadlands, VA
|
48.7 °F
|
42 °F
|
77% |
|
30.06 in
|
0.00 in
/ hr |
49 °F
|
383 ft |
10:35 PM EST |
Normal |
|
|
Belmont Country Club, Ashburn, VA
|
44.1 °F
|
41 °F
|
88% |
|
30.18 in
|
0.00 in
/ hr |
44 °F
|
302 ft |
10:38 PM EST |
Rapid Fire |
|
|
VADOT Dulles_Toll_Rd_E_Plaza, Vienna, VA
|
46 °F
|
41 °F
|
84% |
|
-
|
0.00 in
/ hr |
46 °F
|
416 ft |
10:10 PM EST |
MADIS |
Website |
|
Rosehaven Estates, Fairfax, VA
|
45.7 °F
|
40 °F
|
82% |
|
30.20 in
|
0.00 in
/ hr |
46 °F
|
470 ft |
10:24 PM EST |
Normal |
|
|
Potomac, MD
|
43.0 °F
|
35 °F
|
74% |
|
30.04 in
|
0.00 in
/ hr |
43 °F
|
361 ft |
10:34 PM EST |
Normal |
|
|
Kincaid Forest, Leesburg, VA
|
45.6 °F
|
41 °F
|
83% |
|
30.14 in
|
0.00 in
/ hr |
46 °F
|
294 ft |
10:38 PM EST |
Normal |
|
|
TNG @ Centre Ridge, Centreville, VA
|
47.2 °F
|
43 °F
|
85% |
|
30.12 in
|
0.00 in
/ hr |
47 °F
|
297 ft |
10:38 PM EST |
Normal |
|
|
North Potomac, MD
|
40.1 °F
|
35 °F
|
82% |
|
29.91 in
|
0.00 in
/ hr |
40 °F
|
0 ft |
10:37 PM EST |
Normal |
|
|
MDDOT I-495 at Am Lgn Br, Cabin John, MD
|
41 °F
|
38 °F
|
87% |
|
-
|
0.00 in
/ hr |
41 °F
|
46 ft |
10:13 PM EST |
MADIS |
Website |
|
Merrifield area, Vienna, VA
|
50.1 °F
|
34 °F
|
54% |
|
29.86 in
|
0.00 in
/ hr |
- |
200 ft |
10:38 PM EST |
Normal |
|
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Warnings and Notices
There are currently no warnings or advisories for this location.
 Copyright © 2009 Weather Underground, Inc.
 |
Copyright © 2009 Weather Underground, Inc.
|
|
