|
|
|
Dulles Airport, VA
on Thursday, December 4, 2008
| Daily Summary |
| | Actual | Average | Record |
| Temperature |
| Mean Temperature |
°F
|
39°F
|
|
| Max Temperature |
53°F
|
50°F
|
75°F
(1998) |
| Min Temperature |
38°F
|
29°F
|
10°F
(1966) |
| Degree Days |
| Heating Degree Days |
19 |
25 |
|
| Month to date heating degree days |
102 |
99 |
|
| Since 1 July heating degree days |
1055 |
1076 |
|
| Cooling Degree Days |
0 |
0 |
|
| Month to date cooling degree days |
0 |
0 |
|
| Year to date cooling degree days |
1171 |
1075 |
|
| Moisture |
| Dew Point |
28°F
| | |
| Average Humidity |
62 |
|
|
| Maximum Humidity |
79 |
|
|
| Minimum Humidity |
44 |
|
|
| Precipitation |
| Precipitation |
0.03 in
|
0.10 in
|
1.18 in
(1993) |
| Month to date precipitation |
0.06 |
0.40 |
|
| Year to date precipitation |
41.44 |
39.13 |
|
| Snow |
| Snow |
0.00 in
|
in
|
T in
(0.0) |
| Month to date snowfall |
0.0 |
T |
|
| Since 1 July snowfall |
0.0 |
0.9 |
|
| Snow Depth |
0.00 in
|
| |
| Wind |
| Wind Speed |
7 mph
| | |
| Max Wind Speed |
17 mph
| | |
| Max Gust Speed |
22 mph
| | |
| Visibility |
10 miles
| | |
| Events |
Rain
| | |
|
| Key: T is trace of precipitation, MM is missing value |
|
Source: NWS Daily Summary |
| Time(EST) | Temperature | Dew Point | Humidity | Pressure | Visibility | Wind Direction | Wind Speed | Gust Speed | Precipitation | Events | Conditions |
|---|
| 12:52 AM |
39.9°F
|
26.1°F
|
58% |
30.13 in
|
10.0 miles
|
South |
13.8 mph
|
19.6 mph
|
N/A |
|
Clear |
| 1:52 AM |
39.9°F
|
26.1°F
|
58% |
30.10 in
|
10.0 miles
|
South |
11.5 mph
|
20.7 mph
|
N/A |
|
Scattered Clouds |
| 2:52 AM |
39.0°F
|
27.0°F
|
62% |
30.12 in
|
10.0 miles
|
SSW |
5.8 mph
|
-
|
N/A |
|
Scattered Clouds |
| 3:52 AM |
37.9°F
|
27.0°F
|
65% |
30.10 in
|
10.0 miles
|
South |
3.5 mph
|
-
|
N/A |
|
Overcast |
| 4:52 AM |
39.9°F
|
28.0°F
|
63% |
30.10 in
|
10.0 miles
|
South |
5.8 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 5:52 AM |
39.9°F
|
28.0°F
|
63% |
30.10 in
|
10.0 miles
|
South |
8.1 mph
|
-
|
N/A |
|
Overcast |
| 6:52 AM |
39.9°F
|
28.0°F
|
63% |
30.10 in
|
10.0 miles
|
South |
8.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 7:52 AM |
39.9°F
|
28.0°F
|
63% |
30.10 in
|
10.0 miles
|
SSW |
5.8 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 8:52 AM |
42.1°F
|
28.9°F
|
60% |
30.11 in
|
10.0 miles
|
SSW |
9.2 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 9:52 AM |
45.0°F
|
28.9°F
|
53% |
30.10 in
|
10.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Overcast |
| 10:52 AM |
46.9°F
|
30.0°F
|
52% |
30.09 in
|
10.0 miles
|
South |
4.6 mph
|
-
|
N/A |
|
Overcast |
| 11:52 AM |
51.1°F
|
32.0°F
|
48% |
30.08 in
|
10.0 miles
|
South |
5.8 mph
|
-
|
N/A |
|
Overcast |
| 12:52 PM |
51.1°F
|
30.9°F
|
46% |
30.07 in
|
10.0 miles
|
WNW |
4.6 mph
|
-
|
N/A |
|
Overcast |
| 1:52 PM |
53.1°F
|
32.0°F
|
45% |
30.07 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Overcast |
| 2:52 PM |
53.1°F
|
33.1°F
|
47% |
30.08 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Overcast |
| 3:52 PM |
53.1°F
|
33.1°F
|
47% |
30.09 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Overcast |
| 4:52 PM |
51.1°F
|
34.0°F
|
52% |
30.11 in
|
7.0 miles
|
NW |
4.6 mph
|
-
|
N/A |
|
Overcast |
| 5:52 PM |
46.9°F
|
37.9°F
|
71% |
30.14 in
|
8.0 miles
|
NNW |
9.2 mph
|
-
|
0.00 in
|
Rain
|
Light Rain |
| 6:52 PM |
45.0°F
|
39.0°F
|
80% |
30.16 in
|
8.0 miles
|
North |
10.4 mph
|
-
|
0.00 in
|
|
Overcast |
| 7:52 PM |
43.0°F
|
37.0°F
|
80% |
30.19 in
|
8.0 miles
|
NNW |
12.7 mph
|
21.9 mph
|
0.02 in
|
Rain
|
Light Rain |
| 8:52 PM |
41.0°F
|
36.0°F
|
82% |
30.21 in
|
10.0 miles
|
NNW |
12.7 mph
|
-
|
0.01 in
|
Rain
|
Light Rain |
| 9:52 PM |
41.0°F
|
36.0°F
|
82% |
30.22 in
|
10.0 miles
|
North |
10.4 mph
|
-
|
0.00 in
|
Rain
|
Light Rain |
| 10:52 PM |
41.0°F
|
35.1°F
|
79% |
30.22 in
|
10.0 miles
|
NNW |
8.1 mph
|
-
|
0.00 in
|
|
Overcast |
| 11:52 PM |
39.9°F
|
28.9°F
|
65% |
30.23 in
|
10.0 miles
|
NNW |
9.2 mph
|
-
|
N/A |
|
Overcast |
|
|
|
