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History for Washington, DC
Saturday, July 4, 2009
Daily Summary |
| | Actual | Average | Record |
| Temperature |
| Mean Temperature |
74 °F
|
78 °F
|
|
| Max Temperature |
84 °F
|
88 °F
|
100 °F
(1919) |
| Min Temperature |
63 °F
|
69 °F
|
52 °F
(1933) |
| 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 |
9 |
14 |
|
| Month to date cooling degree days |
34 |
55 |
|
| Year to date cooling degree days |
436 |
491 |
|
| Since 1 June cooling degree days |
306 |
359 |
|
| Growing Degree Days | 22 (Base 50) |
|
|
| Moisture |
| Dew Point |
56 °F
|
|
|
| Average Humidity |
64 |
|
|
| Maximum Humidity |
84 |
|
|
| Minimum Humidity |
43 |
|
|
| Precipitation |
| Precipitation |
0.00 in
|
0.11 in
|
2.18 in
(2004) |
| Month to date precipitation |
0.12 |
0.44 |
|
| Year to date precipitation |
23.25 |
19.60 |
|
| 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 |
29.98 in
|
|
|
| Wind |
| Wind Speed |
9 mph
(WNW) |
|
|
| Max Wind Speed |
17 mph
|
|
|
| Max Gust Speed |
26 mph
|
|
|
| Visibility |
10 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 |
69.1 °F
|
55.9 °F
|
63% |
29.99 in
|
10.0 miles
|
Variable |
3.5 mph
|
-
|
N/A |
|
Partly Cloudy |
| 1:52 AM |
68.0 °F
|
55.9 °F
|
65% |
29.98 in
|
10.0 miles
|
WNW |
8.1 mph
|
-
|
N/A |
|
Clear |
| 2:52 AM |
68.0 °F
|
55.9 °F
|
65% |
29.98 in
|
10.0 miles
|
West |
5.8 mph
|
-
|
N/A |
|
Clear |
| 3:52 AM |
66.9 °F
|
55.9 °F
|
68% |
29.97 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Clear |
| 4:52 AM |
64.9 °F
|
57.0 °F
|
75% |
29.97 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Scattered Clouds |
| 5:52 AM |
63.0 °F
|
57.0 °F
|
81% |
29.99 in
|
10.0 miles
|
South |
4.6 mph
|
-
|
N/A |
|
Scattered Clouds |
| 6:52 AM |
66.0 °F
|
57.0 °F
|
73% |
29.99 in
|
10.0 miles
|
SW |
4.6 mph
|
-
|
N/A |
|
Partly Cloudy |
| 7:52 AM |
70.0 °F
|
57.9 °F
|
65% |
29.99 in
|
10.0 miles
|
WSW |
5.8 mph
|
-
|
N/A |
|
Partly Cloudy |
| 8:52 AM |
73.0 °F
|
57.9 °F
|
59% |
29.99 in
|
10.0 miles
|
West |
9.2 mph
|
-
|
N/A |
|
Partly Cloudy |
| 9:52 AM |
75.0 °F
|
57.9 °F
|
55% |
30.00 in
|
10.0 miles
|
West |
9.2 mph
|
21.9 mph
|
N/A |
|
Scattered Clouds |
| 10:52 AM |
73.9 °F
|
57.0 °F
|
55% |
29.99 in
|
10.0 miles
|
WSW |
8.1 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 11:52 AM |
79.0 °F
|
59.0 °F
|
50% |
29.99 in
|
10.0 miles
|
WNW |
10.4 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 12:52 PM |
80.1 °F
|
57.9 °F
|
47% |
29.98 in
|
10.0 miles
|
West |
15.0 mph
|
21.9 mph
|
N/A |
|
Mostly Cloudy |
| 1:52 PM |
81.0 °F
|
57.0 °F
|
44% |
29.96 in
|
10.0 miles
|
WSW |
13.8 mph
|
20.7 mph
|
N/A |
|
Mostly Cloudy |
| 2:52 PM |
82.9 °F
|
57.9 °F
|
42% |
29.94 in
|
10.0 miles
|
West |
11.5 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 3:36 PM |
82.4 °F
|
59.0 °F
|
45% |
29.92 in
|
10.0 miles
|
WNW |
10.4 mph
|
-
|
N/A |
|
Overcast |
| 3:52 PM |
82.0 °F
|
57.9 °F
|
44% |
29.92 in
|
10.0 miles
|
West |
12.7 mph
|
-
|
N/A |
|
Overcast |
| 4:52 PM |
82.9 °F
|
57.9 °F
|
42% |
29.91 in
|
10.0 miles
|
WNW |
10.4 mph
|
-
|
N/A |
|
Overcast |
| 5:52 PM |
82.0 °F
|
57.9 °F
|
44% |
29.89 in
|
10.0 miles
|
NNW |
12.7 mph
|
-
|
N/A |
|
Overcast |
| 6:52 PM |
80.1 °F
|
57.0 °F
|
45% |
29.90 in
|
10.0 miles
|
NW |
10.4 mph
|
-
|
N/A |
|
Overcast |
| 7:52 PM |
79.0 °F
|
55.9 °F
|
45% |
29.91 in
|
10.0 miles
|
NNW |
8.1 mph
|
-
|
N/A |
|
Overcast |
| 8:52 PM |
79.0 °F
|
55.0 °F
|
44% |
29.91 in
|
10.0 miles
|
NW |
10.4 mph
|
-
|
N/A |
|
Overcast |
| 9:30 PM |
77.0 °F
|
55.4 °F
|
47% |
29.92 in
|
10.0 miles
|
NNW |
10.4 mph
|
-
|
N/A |
|
Overcast |
| 9:52 PM |
75.9 °F
|
55.0 °F
|
48% |
29.93 in
|
10.0 miles
|
NNW |
11.5 mph
|
-
|
N/A |
|
Overcast |
| 10:52 PM |
75.0 °F
|
52.0 °F
|
44% |
29.94 in
|
10.0 miles
|
NNW |
11.5 mph
|
-
|
N/A |
|
Overcast |
| 11:52 PM |
73.9 °F
|
51.1 °F
|
45% |
29.94 in
|
10.0 miles
|
NW |
6.9 mph
|
-
|
N/A |
|
Overcast |
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