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History for Washington, DC
Sunday, August 9, 2009
Daily Summary |
| | Actual | Average | Record |
| Temperature |
| Mean Temperature |
85 °F
|
79 °F
|
|
| Max Temperature |
96 °F
|
87 °F
|
102 °F
(1930) |
| Min Temperature |
73 °F
|
71 °F
|
57 °F
(1989) |
| Degree Days |
| Heating Degree Days |
0 |
0 |
|
| Month to date heating degree days |
0 |
0 |
|
| Since 1 June heating degree days |
5 |
6 |
|
| Since 1 July heating degree days |
0 |
0 |
|
| Cooling Degree Days |
20 |
14 |
|
| Month to date cooling degree days |
126 |
126 |
|
| Year to date cooling degree days |
906 |
1031 |
|
| Since 1 June cooling degree days |
776 |
897 |
|
| Growing Degree Days | 34 (Base 50) |
|
|
| Moisture |
| Dew Point |
69 °F
|
|
|
| Average Humidity |
63 |
|
|
| Maximum Humidity |
87 |
|
|
| Minimum Humidity |
39 |
|
|
| Precipitation |
| Precipitation |
0.00 in
|
0.10 in
|
2.71 in
(1905) |
| Month to date precipitation |
0.56 |
0.95 |
|
| Year to date precipitation |
24.76 |
24.42 |
|
| Snow |
| Snow |
0.00 in
|
0.00 in
|
-
() |
| Month to date snowfall |
0.0 |
0.0 |
|
| Since 1 July snowfall |
0.0 |
0.0 |
|
| Snow Depth |
0.00 in
|
|
|
| Sea Level Pressure |
| Sea Level Pressure |
30.08 in
|
|
|
| Wind |
| Wind Speed |
7 mph
(SW) |
|
|
| Max Wind Speed |
16 mph
|
|
|
| Max Gust Speed |
22 mph
|
|
|
| Visibility |
9 miles
|
|
|
| Events |
|
|
|
|
| Key: T is trace of precipitation, MM is missing value |
|
Source: NWS Daily Summary |
| Time(EDT) | Temperature | Dew Point | Humidity | Sea Level Pressure | Visibility | Wind Direction | Wind Speed | Gust Speed | Precipitation | Events | Conditions |
|---|
| 12:52 AM |
77.0 °F
|
70.0 °F
|
79% |
30.15 in
|
10.0 miles
|
SSW |
4.6 mph
|
-
|
N/A |
|
Overcast |
| 1:52 AM |
75.9 °F
|
70.0 °F
|
82% |
30.14 in
|
10.0 miles
|
South |
5.8 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 2:52 AM |
75.0 °F
|
71.1 °F
|
87% |
30.12 in
|
9.0 miles
|
South |
8.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 3:52 AM |
75.0 °F
|
71.1 °F
|
87% |
30.12 in
|
8.0 miles
|
South |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 4:52 AM |
73.9 °F
|
70.0 °F
|
87% |
30.11 in
|
8.0 miles
|
South |
6.9 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 5:52 AM |
73.9 °F
|
70.0 °F
|
87% |
30.10 in
|
7.0 miles
|
South |
6.9 mph
|
-
|
N/A |
|
Scattered Clouds |
| 6:52 AM |
73.9 °F
|
70.0 °F
|
87% |
30.11 in
|
5.0 miles
|
SSW |
6.9 mph
|
-
|
N/A |
|
Scattered Clouds |
| 7:52 AM |
75.0 °F
|
71.1 °F
|
87% |
30.10 in
|
5.0 miles
|
SSW |
8.1 mph
|
-
|
N/A |
|
Scattered Clouds |
| 8:52 AM |
79.0 °F
|
70.0 °F
|
74% |
30.09 in
|
7.0 miles
|
South |
8.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 9:52 AM |
84.0 °F
|
69.1 °F
|
61% |
30.09 in
|
10.0 miles
|
SW |
10.4 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 10:52 AM |
89.1 °F
|
66.9 °F
|
48% |
30.09 in
|
10.0 miles
|
WSW |
10.4 mph
|
18.4 mph
|
N/A |
|
Mostly Cloudy |
| 11:52 AM |
90.0 °F
|
68.0 °F
|
48% |
30.09 in
|
9.0 miles
|
West |
10.4 mph
|
16.1 mph
|
N/A |
|
Mostly Cloudy |
| 12:52 PM |
91.0 °F
|
66.9 °F
|
45% |
30.09 in
|
9.0 miles
|
West |
6.9 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 1:52 PM |
91.9 °F
|
68.0 °F
|
45% |
30.07 in
|
9.0 miles
|
SSW |
12.7 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 2:52 PM |
93.0 °F
|
66.9 °F
|
42% |
30.06 in
|
9.0 miles
|
SW |
6.9 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 3:52 PM |
95.0 °F
|
66.0 °F
|
38% |
30.04 in
|
10.0 miles
|
West |
15.0 mph
|
19.6 mph
|
N/A |
|
Mostly Cloudy |
| 4:52 PM |
93.9 °F
|
66.0 °F
|
40% |
30.04 in
|
10.0 miles
|
WSW |
9.2 mph
|
16.1 mph
|
N/A |
|
Mostly Cloudy |
| 5:52 PM |
95.0 °F
|
66.0 °F
|
38% |
30.04 in
|
10.0 miles
|
WSW |
9.2 mph
|
-
|
N/A |
|
Scattered Clouds |
| 6:52 PM |
93.0 °F
|
66.0 °F
|
41% |
30.04 in
|
10.0 miles
|
Variable |
4.6 mph
|
-
|
N/A |
|
Scattered Clouds |
| 7:52 PM |
91.0 °F
|
64.9 °F
|
42% |
30.03 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Scattered Clouds |
| 8:52 PM |
88.0 °F
|
68.0 °F
|
51% |
30.02 in
|
10.0 miles
|
SW |
5.8 mph
|
-
|
N/A |
|
Scattered Clouds |
| 9:52 PM |
84.9 °F
|
68.0 °F
|
57% |
30.02 in
|
10.0 miles
|
SW |
5.8 mph
|
-
|
N/A |
|
Clear |
| 10:52 PM |
84.0 °F
|
71.1 °F
|
65% |
30.03 in
|
9.0 miles
|
ENE |
4.6 mph
|
-
|
N/A |
|
Clear |
| 11:52 PM |
82.0 °F
|
69.1 °F
|
65% |
30.01 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Clear |
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