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History for Washington, DC
Wednesday, August 19, 2009
Daily Summary |
| | Actual | Average | Record |
| Temperature |
| Mean Temperature |
82 °F
|
78 °F
|
|
| Max Temperature |
88 °F
|
86 °F
|
98 °F
(2002) |
| Min Temperature |
75 °F
|
70 °F
|
53 °F
(1924) |
| 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 |
17 |
13 |
|
| Month to date cooling degree days |
300 |
261 |
|
| Year to date cooling degree days |
1080 |
1166 |
|
| Since 1 June cooling degree days |
950 |
1032 |
|
| Growing Degree Days | 31 (Base 50) |
|
|
| Moisture |
| Dew Point |
71 °F
|
|
|
| Average Humidity |
70 |
|
|
| Maximum Humidity |
87 |
|
|
| Minimum Humidity |
53 |
|
|
| Precipitation |
| Precipitation |
0.13 in
|
0.09 in
|
3.74 in
(1950) |
| Month to date precipitation |
0.92 |
1.86 |
|
| Year to date precipitation |
25.12 |
25.33 |
|
| 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 |
29.99 in
|
|
|
| Wind |
| Wind Speed |
5 mph
(South) |
|
|
| Max Wind Speed |
24 mph
|
|
|
| Max Gust Speed |
30 mph
|
|
|
| Visibility |
10 miles
|
|
|
| Events |
Rain
,
Thunderstorm
|
|
|
|
| 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 |
78.1 °F
|
71.1 °F
|
79% |
30.02 in
|
10.0 miles
|
NNE |
6.9 mph
|
-
|
N/A |
|
Overcast |
| 1:52 AM |
78.1 °F
|
71.1 °F
|
79% |
30.01 in
|
10.0 miles
|
East |
4.6 mph
|
-
|
N/A |
|
Overcast |
| 2:52 AM |
78.1 °F
|
71.1 °F
|
79% |
30.00 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Mostly Cloudy |
| 3:52 AM |
77.0 °F
|
71.1 °F
|
82% |
30.00 in
|
10.0 miles
|
SW |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 4:52 AM |
78.1 °F
|
70.0 °F
|
76% |
29.99 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Mostly Cloudy |
| 5:52 AM |
77.0 °F
|
71.1 °F
|
82% |
29.99 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Scattered Clouds |
| 6:52 AM |
77.0 °F
|
71.1 °F
|
82% |
30.00 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Scattered Clouds |
| 7:52 AM |
79.0 °F
|
70.0 °F
|
74% |
30.01 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Scattered Clouds |
| 8:52 AM |
82.0 °F
|
70.0 °F
|
67% |
30.02 in
|
10.0 miles
|
North |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 9:52 AM |
84.9 °F
|
69.1 °F
|
59% |
30.02 in
|
10.0 miles
|
NE |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 10:52 AM |
86.0 °F
|
69.1 °F
|
57% |
30.03 in
|
10.0 miles
|
East |
3.5 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 11:52 AM |
84.9 °F
|
69.1 °F
|
59% |
30.03 in
|
10.0 miles
|
South |
4.6 mph
|
-
|
0.00 in
|
Rain
|
Light Rain |
| 12:52 PM |
80.1 °F
|
73.0 °F
|
79% |
30.01 in
|
10.0 miles
|
South |
6.9 mph
|
-
|
0.12 in
|
|
Mostly Cloudy |
| 1:52 PM |
86.0 °F
|
71.1 °F
|
61% |
30.00 in
|
10.0 miles
|
SE |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 2:39 PM |
87.8 °F
|
69.8 °F
|
55% |
29.99 in
|
10.0 miles
|
SE |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 2:52 PM |
87.1 °F
|
68.0 °F
|
53% |
29.99 in
|
10.0 miles
|
SE |
3.5 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 3:17 PM |
87.8 °F
|
69.8 °F
|
55% |
29.98 in
|
10.0 miles
|
South |
6.9 mph
|
-
|
0.00 in
|
Thunderstorm
|
Thunderstorm |
| 3:38 PM |
82.4 °F
|
69.8 °F
|
66% |
29.99 in
|
10.0 miles
|
WSW |
20.7 mph
|
29.9 mph
|
0.00 in
|
Rain
,
Thunderstorm
|
Light Thunderstorms and Rain |
| 3:52 PM |
78.1 °F
|
71.1 °F
|
79% |
29.98 in
|
10.0 miles
|
SW |
8.1 mph
|
-
|
0.00 in
|
Rain
,
Thunderstorm
|
Light Thunderstorms and Rain |
| 4:09 PM |
77.0 °F
|
73.4 °F
|
89% |
29.99 in
|
8.0 miles
|
SW |
9.2 mph
|
-
|
0.01 in
|
Rain
|
Light Rain |
| 4:52 PM |
78.1 °F
|
73.0 °F
|
84% |
29.97 in
|
10.0 miles
|
South |
10.4 mph
|
-
|
0.01 in
|
|
Overcast |
| 5:52 PM |
82.0 °F
|
72.0 °F
|
71% |
29.98 in
|
10.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 6:52 PM |
80.1 °F
|
72.0 °F
|
76% |
29.96 in
|
10.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 7:52 PM |
78.1 °F
|
73.0 °F
|
84% |
29.96 in
|
10.0 miles
|
SSW |
10.4 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 8:52 PM |
78.1 °F
|
73.0 °F
|
84% |
29.96 in
|
10.0 miles
|
SSW |
6.9 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 9:52 PM |
77.0 °F
|
72.0 °F
|
84% |
29.98 in
|
10.0 miles
|
SSW |
4.6 mph
|
-
|
N/A |
|
Partly Cloudy |
| 10:52 PM |
75.9 °F
|
72.0 °F
|
87% |
29.99 in
|
10.0 miles
|
SSW |
8.1 mph
|
-
|
N/A |
|
Partly Cloudy |
| 11:52 PM |
75.9 °F
|
72.0 °F
|
87% |
30.00 in
|
10.0 miles
|
South |
8.1 mph
|
-
|
N/A |
|
Scattered Clouds |
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