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History for Washington, DC
Saturday, July 11, 2009
Daily Summary |
| | Actual | Average | Record |
| Temperature |
| Mean Temperature |
76 °F
|
79 °F
|
|
| Max Temperature |
84 °F
|
88 °F
|
99 °F
(1987) |
| Min Temperature |
67 °F
|
70 °F
|
54 °F
(1898) |
| 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 |
11 |
15 |
|
| Month to date cooling degree days |
96 |
156 |
|
| Year to date cooling degree days |
498 |
592 |
|
| Since 1 June cooling degree days |
368 |
460 |
|
| Growing Degree Days | 24 (Base 50) |
|
|
| Moisture |
| Dew Point |
64 °F
|
|
|
| Average Humidity |
67 |
|
|
| Maximum Humidity |
82 |
|
|
| Minimum Humidity |
51 |
|
|
| Precipitation |
| Precipitation |
0.01 in
|
0.12 in
|
1.79 in
(1906) |
| Month to date precipitation |
0.13 |
1.27 |
|
| Year to date precipitation |
23.26 |
20.43 |
|
| 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 |
30.13 in
|
|
|
| Wind |
| Wind Speed |
11 mph
(South) |
|
|
| 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(EDT) | Temperature | Dew Point | Humidity | Sea Level Pressure | Visibility | Wind Direction | Wind Speed | Gust Speed | Precipitation | Events | Conditions |
|---|
| 12:52 AM |
70.0 °F
|
60.1 °F
|
71% |
30.26 in
|
10.0 miles
|
South |
10.4 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 1:52 AM |
69.1 °F
|
61.0 °F
|
75% |
30.25 in
|
10.0 miles
|
SSW |
9.2 mph
|
-
|
N/A |
|
Overcast |
| 2:52 AM |
68.0 °F
|
61.0 °F
|
78% |
30.25 in
|
10.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Overcast |
| 3:52 AM |
68.0 °F
|
61.0 °F
|
78% |
30.24 in
|
10.0 miles
|
South |
8.1 mph
|
-
|
N/A |
|
Overcast |
| 4:52 AM |
68.0 °F
|
62.1 °F
|
81% |
30.23 in
|
10.0 miles
|
South |
10.4 mph
|
-
|
N/A |
|
Overcast |
| 5:52 AM |
66.9 °F
|
61.0 °F
|
81% |
30.23 in
|
10.0 miles
|
South |
8.1 mph
|
-
|
N/A |
|
Overcast |
| 6:52 AM |
68.0 °F
|
61.0 °F
|
78% |
30.22 in
|
10.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Overcast |
| 7:52 AM |
69.1 °F
|
61.0 °F
|
75% |
30.23 in
|
10.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Overcast |
| 8:52 AM |
71.1 °F
|
61.0 °F
|
70% |
30.22 in
|
10.0 miles
|
South |
13.8 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 9:52 AM |
73.9 °F
|
61.0 °F
|
64% |
30.19 in
|
10.0 miles
|
South |
15.0 mph
|
-
|
N/A |
|
Scattered Clouds |
| 10:52 AM |
77.0 °F
|
61.0 °F
|
58% |
30.18 in
|
10.0 miles
|
South |
13.8 mph
|
-
|
N/A |
|
Scattered Clouds |
| 11:52 AM |
80.1 °F
|
62.1 °F
|
54% |
30.14 in
|
10.0 miles
|
South |
13.8 mph
|
-
|
N/A |
|
Scattered Clouds |
| 12:52 PM |
82.0 °F
|
63.0 °F
|
52% |
30.13 in
|
6.0 miles
|
SSW |
15.0 mph
|
23.0 mph
|
N/A |
|
Haze |
| 1:52 PM |
82.0 °F
|
64.0 °F
|
54% |
30.13 in
|
10.0 miles
|
South |
11.5 mph
|
-
|
N/A |
|
Overcast |
| 2:52 PM |
82.9 °F
|
66.0 °F
|
56% |
30.10 in
|
10.0 miles
|
South |
12.7 mph
|
19.6 mph
|
N/A |
|
Overcast |
| 3:52 PM |
81.0 °F
|
66.0 °F
|
60% |
30.09 in
|
10.0 miles
|
South |
15.0 mph
|
-
|
N/A |
|
Overcast |
| 4:52 PM |
81.0 °F
|
66.9 °F
|
62% |
30.06 in
|
10.0 miles
|
South |
10.4 mph
|
-
|
N/A |
|
Overcast |
| 5:52 PM |
79.0 °F
|
69.1 °F
|
72% |
30.04 in
|
9.0 miles
|
South |
10.4 mph
|
-
|
0.00 in
|
Rain
|
Light Rain |
| 6:52 PM |
79.0 °F
|
70.0 °F
|
74% |
30.04 in
|
10.0 miles
|
South |
6.9 mph
|
-
|
0.01 in
|
|
Mostly Cloudy |
| 7:52 PM |
78.1 °F
|
70.0 °F
|
76% |
30.01 in
|
10.0 miles
|
South |
10.4 mph
|
-
|
N/A |
|
Overcast |
| 8:52 PM |
77.0 °F
|
69.1 °F
|
76% |
29.99 in
|
9.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 9:52 PM |
75.2 °F
|
69.8 °F
|
83% |
29.99 in
|
9.0 miles
|
SSW |
9.2 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 10:52 PM |
75.9 °F
|
69.1 °F
|
79% |
29.99 in
|
8.0 miles
|
South |
8.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 11:52 PM |
75.9 °F
|
70.0 °F
|
82% |
29.99 in
|
8.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Mostly Cloudy |
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