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History for Washington, DC
Wednesday, July 29, 2009
Daily Summary |
| | Actual | Average | Record |
| Temperature |
| Mean Temperature |
81 °F
|
79 °F
|
|
| Max Temperature |
87 °F
|
88 °F
|
104 °F
(2011) |
| Min Temperature |
74 °F
|
70 °F
|
58 °F
(1920) |
| 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 |
16 |
15 |
|
| Month to date cooling degree days |
346 |
426 |
|
| Year to date cooling degree days |
748 |
862 |
|
| Since 1 June cooling degree days |
618 |
730 |
|
| Growing Degree Days | 30 (Base 50) |
|
|
| Moisture |
| Dew Point |
70 °F
|
|
|
| Average Humidity |
74 |
|
|
| Maximum Humidity |
87 |
|
|
| Minimum Humidity |
61 |
|
|
| Precipitation |
| Precipitation |
0.05 in
|
0.12 in
|
2.34 in
(1877) |
| Month to date precipitation |
0.94 |
3.43 |
|
| Year to date precipitation |
24.07 |
22.59 |
|
| 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 |
29.83 in
|
|
|
| Wind |
| Wind Speed |
11 mph
(SSW) |
|
|
| Max Wind Speed |
24 mph
|
|
|
| Max Gust Speed |
31 mph
|
|
|
| Visibility |
10 miles
|
|
|
| Events |
Rain
|
|
|
|
| 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 |
79.0 °F
|
71.1 °F
|
77% |
29.90 in
|
10.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Overcast |
| 1:52 AM |
78.1 °F
|
71.1 °F
|
79% |
29.88 in
|
10.0 miles
|
South |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 2:52 AM |
78.1 °F
|
70.0 °F
|
76% |
29.88 in
|
10.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Overcast |
| 3:52 AM |
78.1 °F
|
69.1 °F
|
74% |
29.89 in
|
10.0 miles
|
South |
10.4 mph
|
-
|
N/A |
|
Overcast |
| 4:52 AM |
77.0 °F
|
70.0 °F
|
79% |
29.89 in
|
10.0 miles
|
South |
8.1 mph
|
-
|
N/A |
|
Overcast |
| 5:52 AM |
75.9 °F
|
71.1 °F
|
85% |
29.89 in
|
7.0 miles
|
South |
10.4 mph
|
-
|
0.00 in
|
Rain
|
Light Rain |
| 6:52 AM |
75.9 °F
|
70.0 °F
|
82% |
29.86 in
|
9.0 miles
|
SSW |
5.8 mph
|
-
|
0.00 in
|
|
Overcast |
| 7:52 AM |
77.0 °F
|
71.1 °F
|
82% |
29.86 in
|
9.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Overcast |
| 8:52 AM |
78.1 °F
|
71.1 °F
|
79% |
29.88 in
|
9.0 miles
|
SSW |
13.8 mph
|
-
|
N/A |
|
Overcast |
| 9:52 AM |
78.1 °F
|
70.0 °F
|
76% |
29.88 in
|
7.0 miles
|
South |
13.8 mph
|
-
|
N/A |
|
Overcast |
| 10:52 AM |
79.0 °F
|
70.0 °F
|
74% |
29.87 in
|
8.0 miles
|
South |
10.4 mph
|
-
|
N/A |
|
Overcast |
| 11:52 AM |
81.0 °F
|
69.1 °F
|
67% |
29.87 in
|
10.0 miles
|
South |
16.1 mph
|
-
|
N/A |
|
Overcast |
| 12:52 PM |
84.0 °F
|
69.1 °F
|
61% |
29.86 in
|
10.0 miles
|
SSW |
15.0 mph
|
23.0 mph
|
N/A |
|
Overcast |
| 1:52 PM |
84.0 °F
|
69.1 °F
|
61% |
29.84 in
|
10.0 miles
|
SW |
16.1 mph
|
-
|
N/A |
|
Overcast |
| 2:52 PM |
84.0 °F
|
69.1 °F
|
61% |
29.81 in
|
10.0 miles
|
SSW |
16.1 mph
|
-
|
N/A |
|
Overcast |
| 3:18 PM |
84.2 °F
|
69.8 °F
|
62% |
29.80 in
|
10.0 miles
|
SW |
20.7 mph
|
25.3 mph
|
N/A |
|
Overcast |
| 3:52 PM |
84.0 °F
|
69.1 °F
|
61% |
29.79 in
|
10.0 miles
|
SW |
21.9 mph
|
26.5 mph
|
N/A |
|
Overcast |
| 4:27 PM |
86.0 °F
|
68.0 °F
|
55% |
29.78 in
|
10.0 miles
|
SSW |
19.6 mph
|
31.1 mph
|
N/A |
|
Overcast |
| 4:52 PM |
84.9 °F
|
69.1 °F
|
59% |
29.78 in
|
10.0 miles
|
SW |
16.1 mph
|
25.3 mph
|
N/A |
|
Overcast |
| 5:52 PM |
82.0 °F
|
70.0 °F
|
67% |
29.77 in
|
10.0 miles
|
SSW |
15.0 mph
|
-
|
N/A |
|
Overcast |
| 6:30 PM |
78.8 °F
|
71.6 °F
|
78% |
29.77 in
|
9.0 miles
|
SSW |
11.5 mph
|
-
|
0.00 in
|
Rain
|
Light Rain |
| 6:52 PM |
78.1 °F
|
73.0 °F
|
84% |
29.78 in
|
7.0 miles
|
SSW |
13.8 mph
|
-
|
0.01 in
|
Rain
|
Light Rain |
| 7:12 PM |
77.0 °F
|
71.6 °F
|
83% |
29.78 in
|
10.0 miles
|
South |
9.2 mph
|
-
|
0.04 in
|
|
Overcast |
| 7:52 PM |
75.9 °F
|
72.0 °F
|
87% |
29.77 in
|
10.0 miles
|
SSW |
5.8 mph
|
-
|
0.04 in
|
|
Mostly Cloudy |
| 8:52 PM |
75.9 °F
|
71.1 °F
|
85% |
29.78 in
|
10.0 miles
|
SSW |
10.4 mph
|
-
|
N/A |
|
Scattered Clouds |
| 9:52 PM |
75.9 °F
|
71.1 °F
|
85% |
29.81 in
|
10.0 miles
|
SW |
10.4 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 10:52 PM |
75.9 °F
|
71.1 °F
|
85% |
29.81 in
|
10.0 miles
|
SSW |
8.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 11:52 PM |
75.0 °F
|
71.1 °F
|
87% |
29.82 in
|
10.0 miles
|
SSW |
8.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
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