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History for Washington, DC
Thursday, July 23, 2009
Daily Summary |
| | Actual | Average | Record |
| Temperature |
| Mean Temperature |
79 °F
|
80 °F
|
|
| Max Temperature |
87 °F
|
89 °F
|
102 °F
(2011) |
| Min Temperature |
70 °F
|
71 °F
|
56 °F
(1890) |
| Degree Days |
| Heating Degree Days |
0 |
0 |
|
| Month to date heating degree days |
0 |
0 |
|
| Since 1 June heating degree days |
5 |
5 |
|
| Since 1 July heating degree days |
0 |
0 |
|
| Cooling Degree Days |
14 |
15 |
|
| Month to date cooling degree days |
254 |
336 |
|
| Year to date cooling degree days |
656 |
772 |
|
| Since 1 June cooling degree days |
526 |
640 |
|
| Growing Degree Days | 28 (Base 50) |
|
|
| Moisture |
| Dew Point |
68 °F
|
|
|
| Average Humidity |
74 |
|
|
| Maximum Humidity |
87 |
|
|
| Minimum Humidity |
61 |
|
|
| Precipitation |
| Precipitation |
0.56 in
|
0.12 in
|
2.60 in
(1940) |
| Month to date precipitation |
0.82 |
2.71 |
|
| Year to date precipitation |
23.95 |
21.87 |
|
| 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 |
29.90 in
|
|
|
| Wind |
| Wind Speed |
6 mph
(East) |
|
|
| Max Wind Speed |
21 mph
|
|
|
| Max Gust Speed |
25 mph
|
|
|
| Visibility |
9 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 |
73.9 °F
|
66.0 °F
|
76% |
30.04 in
|
10.0 miles
|
SSE |
8.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 1:52 AM |
73.0 °F
|
66.9 °F
|
81% |
30.03 in
|
10.0 miles
|
SSE |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 2:41 AM |
73.4 °F
|
66.2 °F
|
78% |
30.03 in
|
10.0 miles
|
SSE |
6.9 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 2:52 AM |
73.0 °F
|
66.9 °F
|
81% |
30.03 in
|
10.0 miles
|
South |
5.8 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 3:52 AM |
73.0 °F
|
68.0 °F
|
84% |
30.01 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Mostly Cloudy |
| 4:52 AM |
73.0 °F
|
69.1 °F
|
87% |
29.99 in
|
10.0 miles
|
SE |
3.5 mph
|
-
|
N/A |
|
Overcast |
| 5:09 AM |
73.4 °F
|
69.8 °F
|
88% |
29.99 in
|
10.0 miles
|
SE |
3.5 mph
|
-
|
N/A |
|
Overcast |
| 5:52 AM |
73.0 °F
|
69.1 °F
|
87% |
29.97 in
|
10.0 miles
|
NE |
5.8 mph
|
-
|
N/A |
|
Overcast |
| 6:52 AM |
73.0 °F
|
69.1 °F
|
87% |
29.97 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Overcast |
| 6:54 AM |
73.4 °F
|
69.8 °F
|
88% |
29.97 in
|
8.0 miles
|
Calm |
Calm |
-
|
0.00 in
|
Rain
|
Light Rain |
| 7:14 AM |
73.4 °F
|
69.8 °F
|
88% |
29.98 in
|
10.0 miles
|
Calm |
Calm |
-
|
0.00 in
|
|
Overcast |
| 7:42 AM |
75.2 °F
|
69.8 °F
|
83% |
29.97 in
|
10.0 miles
|
Calm |
Calm |
-
|
0.00 in
|
|
Overcast |
| 7:52 AM |
75.0 °F
|
70.0 °F
|
84% |
29.97 in
|
10.0 miles
|
East |
5.8 mph
|
-
|
0.00 in
|
|
Overcast |
| 8:06 AM |
75.2 °F
|
69.8 °F
|
83% |
29.97 in
|
10.0 miles
|
East |
5.8 mph
|
-
|
N/A |
|
Overcast |
| 8:34 AM |
75.2 °F
|
69.8 °F
|
83% |
29.97 in
|
6.0 miles
|
East |
3.5 mph
|
-
|
0.00 in
|
Rain
|
Light Rain |
| 8:52 AM |
75.9 °F
|
70.0 °F
|
82% |
29.96 in
|
10.0 miles
|
East |
3.5 mph
|
-
|
0.00 in
|
Rain
|
Light Rain |
| 9:52 AM |
78.1 °F
|
70.0 °F
|
76% |
29.94 in
|
10.0 miles
|
Calm |
Calm |
-
|
0.00 in
|
|
Overcast |
| 10:10 AM |
78.8 °F
|
69.8 °F
|
74% |
29.94 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Mostly Cloudy |
| 10:52 AM |
81.0 °F
|
70.0 °F
|
69% |
29.93 in
|
10.0 miles
|
Variable |
4.6 mph
|
-
|
N/A |
|
Overcast |
| 11:52 AM |
82.9 °F
|
69.1 °F
|
63% |
29.92 in
|
10.0 miles
|
SE |
3.5 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 12:52 PM |
84.0 °F
|
69.1 °F
|
61% |
29.90 in
|
10.0 miles
|
NE |
11.5 mph
|
-
|
N/A |
|
Overcast |
| 1:29 PM |
86.0 °F
|
68.0 °F
|
55% |
29.89 in
|
10.0 miles
|
SSE |
9.2 mph
|
-
|
N/A |
|
Overcast |
| 1:44 PM |
84.2 °F
|
68.0 °F
|
58% |
29.88 in
|
10.0 miles
|
SE |
9.2 mph
|
-
|
N/A |
|
Overcast |
| 1:52 PM |
82.9 °F
|
66.9 °F
|
58% |
29.88 in
|
10.0 miles
|
SSE |
9.2 mph
|
16.1 mph
|
N/A |
Thunderstorm
|
Thunderstorm |
| 2:24 PM |
78.8 °F
|
66.2 °F
|
65% |
29.87 in
|
10.0 miles
|
NNW |
9.2 mph
|
-
|
N/A |
Thunderstorm
|
Thunderstorm |
| 2:34 PM |
78.8 °F
|
66.2 °F
|
65% |
29.87 in
|
10.0 miles
|
NE |
10.4 mph
|
-
|
0.00 in
|
|
Overcast |
| 2:52 PM |
80.1 °F
|
68.0 °F
|
67% |
29.87 in
|
10.0 miles
|
NNW |
10.4 mph
|
-
|
0.00 in
|
|
Mostly Cloudy |
| 3:52 PM |
82.0 °F
|
69.1 °F
|
65% |
29.85 in
|
10.0 miles
|
NE |
11.5 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 4:52 PM |
82.0 °F
|
70.0 °F
|
67% |
29.83 in
|
10.0 miles
|
ENE |
8.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 5:52 PM |
79.0 °F
|
66.0 °F
|
64% |
29.83 in
|
10.0 miles
|
East |
10.4 mph
|
-
|
0.00 in
|
|
Mostly Cloudy |
| 6:00 PM |
78.8 °F
|
66.2 °F
|
65% |
29.83 in
|
10.0 miles
|
East |
9.2 mph
|
-
|
N/A |
Thunderstorm
|
Thunderstorm |
| 6:37 PM |
80.6 °F
|
68.0 °F
|
65% |
29.83 in
|
10.0 miles
|
ENE |
9.2 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 6:52 PM |
78.1 °F
|
68.0 °F
|
71% |
29.83 in
|
10.0 miles
|
East |
10.4 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 7:39 PM |
77.0 °F
|
69.8 °F
|
78% |
29.83 in
|
10.0 miles
|
NE |
9.2 mph
|
-
|
N/A |
Thunderstorm
|
Thunderstorm |
| 7:52 PM |
77.0 °F
|
69.1 °F
|
76% |
29.84 in
|
10.0 miles
|
NNE |
8.1 mph
|
-
|
N/A |
Thunderstorm
|
Thunderstorm |
| 8:02 PM |
75.2 °F
|
69.8 °F
|
83% |
29.84 in
|
6.0 miles
|
North |
17.3 mph
|
24.2 mph
|
0.01 in
|
Rain
,
Thunderstorm
|
Heavy Thunderstorms and Rain |
| 8:17 PM |
75.2 °F
|
69.8 °F
|
83% |
29.83 in
|
2.5 miles
|
ENE |
19.6 mph
|
25.3 mph
|
0.08 in
|
Rain
,
Thunderstorm
|
Thunderstorms and Rain |
| 8:22 PM |
73.4 °F
|
69.8 °F
|
88% |
29.83 in
|
1.0 miles
|
ENE |
11.5 mph
|
25.3 mph
|
0.18 in
|
Rain
,
Thunderstorm
|
Heavy Thunderstorms and Rain |
| 8:24 PM |
73.4 °F
|
69.8 °F
|
88% |
29.83 in
|
0.8 miles
|
ESE |
9.2 mph
|
-
|
0.27 in
|
Rain
,
Thunderstorm
|
Heavy Thunderstorms and Rain |
| 8:27 PM |
73.4 °F
|
69.8 °F
|
88% |
29.84 in
|
0.8 miles
|
SSE |
9.2 mph
|
-
|
0.44 in
|
Rain
,
Thunderstorm
|
Heavy Thunderstorms and Rain |
| 8:34 PM |
73.4 °F
|
68.0 °F
|
83% |
29.84 in
|
4.0 miles
|
South |
6.9 mph
|
-
|
0.50 in
|
Rain
,
Thunderstorm
|
Light Thunderstorms and Rain |
| 8:38 PM |
71.6 °F
|
68.0 °F
|
88% |
29.83 in
|
4.0 miles
|
Variable |
4.6 mph
|
-
|
0.51 in
|
Rain
,
Thunderstorm
|
Light Thunderstorms and Rain |
| 8:41 PM |
71.6 °F
|
68.0 °F
|
88% |
29.83 in
|
4.0 miles
|
NNE |
4.6 mph
|
-
|
0.51 in
|
Rain
,
Thunderstorm
|
Light Thunderstorms and Rain |
| 8:48 PM |
73.4 °F
|
66.2 °F
|
78% |
29.84 in
|
10.0 miles
|
Variable |
4.6 mph
|
-
|
0.51 in
|
Thunderstorm
|
Thunderstorm |
| 8:52 PM |
73.0 °F
|
68.0 °F
|
84% |
29.84 in
|
10.0 miles
|
Calm |
Calm |
-
|
0.51 in
|
Thunderstorm
|
Thunderstorm |
| 9:22 PM |
73.4 °F
|
66.2 °F
|
78% |
29.86 in
|
10.0 miles
|
ESE |
4.6 mph
|
-
|
0.00 in
|
|
Mostly Cloudy |
| 9:52 PM |
71.1 °F
|
66.0 °F
|
84% |
29.86 in
|
10.0 miles
|
SSE |
9.2 mph
|
-
|
0.00 in
|
|
Mostly Cloudy |
| 10:09 PM |
69.8 °F
|
66.2 °F
|
88% |
29.87 in
|
10.0 miles
|
Calm |
Calm |
-
|
0.00 in
|
Rain
,
Thunderstorm
|
Light Thunderstorms and Rain |
| 10:52 PM |
71.1 °F
|
66.9 °F
|
87% |
29.88 in
|
7.0 miles
|
WNW |
5.8 mph
|
-
|
0.05 in
|
Rain
,
Thunderstorm
|
Light Thunderstorms and Rain |
| 10:58 PM |
71.6 °F
|
66.2 °F
|
83% |
29.89 in
|
10.0 miles
|
WNW |
9.2 mph
|
-
|
0.00 in
|
Rain
|
Light Rain |
| 11:52 PM |
72.0 °F
|
68.0 °F
|
87% |
29.87 in
|
10.0 miles
|
Calm |
Calm |
-
|
0.00 in
|
|
Mostly Cloudy |
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