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History for Washington, DC
Friday, November 20, 2009
Daily Summary |
| | Actual | Average | Record |
| Temperature |
| Mean Temperature |
53 °F
|
48 °F
|
|
| Max Temperature |
60 °F
|
56 °F
|
79 °F
(1942) |
| Min Temperature |
46 °F
|
40 °F
|
20 °F
(1901) |
| Degree Days |
| Heating Degree Days |
12 |
17 |
|
| Month to date heating degree days |
218 |
277 |
|
| Since 1 July heating degree days |
434 |
506 |
|
| Cooling Degree Days |
0 |
0 |
|
| Month to date cooling degree days |
0 |
0 |
|
| Year to date cooling degree days |
1433 |
1547 |
|
| Growing Degree Days | 4 (Base 50) |
|
|
| Moisture |
| Dew Point |
41 °F
|
|
|
| Average Humidity |
67 |
|
|
| Maximum Humidity |
89 |
|
|
| Minimum Humidity |
44 |
|
|
| Precipitation |
| Precipitation |
0.01 in
|
0.11 in
|
1.83 in
(1952) |
| Month to date precipitation |
3.03 |
2.10 |
|
| Year to date precipitation |
38.71 |
35.62 |
|
| Snow |
| Snow |
0.00 in
|
0.00 in
|
0.50 in
(1961) |
| Month to date snowfall |
0.0 |
0.2 |
|
| Since 1 July snowfall |
0.0 |
0.2 |
|
| Snow Depth |
0.00 in
|
|
|
| Sea Level Pressure |
| Sea Level Pressure |
30.12 in
|
|
|
| Wind |
| Wind Speed |
9 mph
(NNW) |
|
|
| Max Wind Speed |
18 mph
|
|
|
| Max Gust Speed |
23 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 | Sea Level Pressure | Visibility | Wind Direction | Wind Speed | Gust Speed | Precipitation | Events | Conditions |
|---|
| 12:38 AM |
57.2 °F
|
53.6 °F
|
88% |
30.05 in
|
10.0 miles
|
NW |
10.4 mph
|
-
|
0.01 in
|
|
Overcast |
| 12:52 AM |
57.0 °F
|
53.1 °F
|
87% |
30.05 in
|
10.0 miles
|
NW |
12.7 mph
|
-
|
0.01 in
|
Rain
|
Light Rain |
| 1:19 AM |
55.4 °F
|
51.8 °F
|
88% |
30.04 in
|
10.0 miles
|
NW |
10.4 mph
|
-
|
0.00 in
|
|
Overcast |
| 1:52 AM |
55.9 °F
|
51.1 °F
|
84% |
30.05 in
|
10.0 miles
|
NNW |
10.4 mph
|
-
|
0.00 in
|
|
Scattered Clouds |
| 2:52 AM |
54.0 °F
|
50.0 °F
|
86% |
30.06 in
|
10.0 miles
|
NNW |
8.1 mph
|
-
|
N/A |
|
Clear |
| 3:10 AM |
53.6 °F
|
48.2 °F
|
82% |
30.07 in
|
10.0 miles
|
North |
5.8 mph
|
-
|
N/A |
|
Partly Cloudy |
| 3:52 AM |
53.1 °F
|
46.9 °F
|
80% |
30.08 in
|
10.0 miles
|
NNW |
12.7 mph
|
18.4 mph
|
N/A |
|
Clear |
| 4:52 AM |
52.0 °F
|
44.1 °F
|
74% |
30.10 in
|
10.0 miles
|
NNW |
11.5 mph
|
-
|
N/A |
|
Clear |
| 5:52 AM |
51.1 °F
|
39.9 °F
|
66% |
30.12 in
|
10.0 miles
|
NNW |
13.8 mph
|
-
|
N/A |
|
Clear |
| 6:52 AM |
50.0 °F
|
39.9 °F
|
68% |
30.14 in
|
10.0 miles
|
NNW |
9.2 mph
|
-
|
N/A |
|
Partly Cloudy |
| 7:52 AM |
51.1 °F
|
41.0 °F
|
68% |
30.15 in
|
10.0 miles
|
NNW |
5.8 mph
|
-
|
N/A |
|
Partly Cloudy |
| 8:52 AM |
54.0 °F
|
41.0 °F
|
62% |
30.16 in
|
10.0 miles
|
North |
4.6 mph
|
-
|
N/A |
|
Clear |
| 9:52 AM |
55.0 °F
|
39.9 °F
|
57% |
30.16 in
|
10.0 miles
|
North |
5.8 mph
|
-
|
N/A |
|
Partly Cloudy |
| 10:52 AM |
57.0 °F
|
39.9 °F
|
53% |
30.16 in
|
10.0 miles
|
NNW |
13.8 mph
|
-
|
N/A |
|
Scattered Clouds |
| 11:52 AM |
57.0 °F
|
39.0 °F
|
51% |
30.15 in
|
10.0 miles
|
NW |
12.7 mph
|
18.4 mph
|
N/A |
|
Mostly Cloudy |
| 12:52 PM |
57.9 °F
|
39.0 °F
|
49% |
30.14 in
|
10.0 miles
|
NNW |
16.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 1:52 PM |
59.0 °F
|
37.9 °F
|
46% |
30.12 in
|
10.0 miles
|
WNW |
11.5 mph
|
20.7 mph
|
N/A |
|
Scattered Clouds |
| 2:52 PM |
59.0 °F
|
37.0 °F
|
44% |
30.12 in
|
10.0 miles
|
WNW |
13.8 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 3:52 PM |
57.9 °F
|
37.0 °F
|
46% |
30.12 in
|
10.0 miles
|
North |
8.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 4:52 PM |
55.0 °F
|
36.0 °F
|
49% |
30.11 in
|
10.0 miles
|
NNW |
8.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 5:52 PM |
55.0 °F
|
36.0 °F
|
49% |
30.12 in
|
10.0 miles
|
NW |
6.9 mph
|
-
|
N/A |
|
Scattered Clouds |
| 6:52 PM |
54.0 °F
|
36.0 °F
|
51% |
30.15 in
|
10.0 miles
|
NNW |
6.9 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 7:52 PM |
52.0 °F
|
36.0 °F
|
54% |
30.17 in
|
10.0 miles
|
North |
8.1 mph
|
-
|
N/A |
|
Partly Cloudy |
| 8:52 PM |
51.1 °F
|
35.1 °F
|
54% |
30.17 in
|
10.0 miles
|
NW |
6.9 mph
|
-
|
N/A |
|
Clear |
| 9:52 PM |
50.0 °F
|
35.1 °F
|
57% |
30.17 in
|
10.0 miles
|
NW |
5.8 mph
|
-
|
N/A |
|
Clear |
| 10:52 PM |
48.2 °F
|
35.6 °F
|
62% |
30.17 in
|
10.0 miles
|
WNW |
5.8 mph
|
-
|
N/A |
|
Clear |
| 11:52 PM |
48.0 °F
|
35.1 °F
|
61% |
30.17 in
|
10.0 miles
|
NNW |
5.8 mph
|
-
|
N/A |
|
Clear |
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