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History for Washington, DC
Saturday, August 1, 2009
Daily Summary |
| | Actual | Average | Record |
| Temperature |
| Mean Temperature |
80 °F
|
79 °F
|
|
| Max Temperature |
89 °F
|
88 °F
|
100 °F
(2011) |
| Min Temperature |
70 °F
|
71 °F
|
54 °F
(1895) |
| 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 |
15 |
14 |
|
| Month to date cooling degree days |
15 |
14 |
|
| Year to date cooling degree days |
795 |
919 |
|
| Since 1 June cooling degree days |
665 |
785 |
|
| Growing Degree Days | 30 (Base 50) |
|
|
| Moisture |
| Dew Point |
68 °F
|
|
|
| Average Humidity |
69 |
|
|
| Maximum Humidity |
90 |
|
|
| Minimum Humidity |
48 |
|
|
| Precipitation |
| Precipitation |
0.02 in
|
0.11 in
|
2.84 in
(1948) |
| Month to date precipitation |
0.02 |
0.11 |
|
| Year to date precipitation |
24.22 |
23.58 |
|
| 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 |
30.04 in
|
|
|
| Wind |
| Wind Speed |
6 mph
(South) |
|
|
| Max Wind Speed |
22 mph
|
|
|
| Max Gust Speed |
30 mph
|
|
|
| Visibility |
10 miles
|
|
|
| Events |
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 |
73.0 °F
|
66.9 °F
|
81% |
30.04 in
|
10.0 miles
|
SW |
4.6 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 1:52 AM |
72.0 °F
|
66.9 °F
|
84% |
30.04 in
|
10.0 miles
|
SW |
5.8 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 2:52 AM |
71.1 °F
|
68.0 °F
|
90% |
30.04 in
|
10.0 miles
|
SW |
3.5 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 3:52 AM |
71.1 °F
|
66.9 °F
|
87% |
30.04 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Clear |
| 4:52 AM |
71.1 °F
|
66.9 °F
|
87% |
30.04 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Partly Cloudy |
| 5:52 AM |
71.1 °F
|
66.9 °F
|
87% |
30.06 in
|
10.0 miles
|
SSW |
3.5 mph
|
-
|
N/A |
|
Partly Cloudy |
| 6:52 AM |
71.1 °F
|
66.9 °F
|
87% |
30.09 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Scattered Clouds |
| 7:52 AM |
73.9 °F
|
66.9 °F
|
79% |
30.10 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Scattered Clouds |
| 8:52 AM |
75.9 °F
|
69.1 °F
|
79% |
30.10 in
|
10.0 miles
|
SSE |
3.5 mph
|
-
|
N/A |
|
Partly Cloudy |
| 9:52 AM |
79.0 °F
|
68.0 °F
|
69% |
30.10 in
|
10.0 miles
|
South |
5.8 mph
|
-
|
N/A |
|
Scattered Clouds |
| 10:52 AM |
82.0 °F
|
66.9 °F
|
60% |
30.09 in
|
10.0 miles
|
South |
6.9 mph
|
-
|
N/A |
|
Scattered Clouds |
| 11:52 AM |
84.9 °F
|
66.9 °F
|
55% |
30.09 in
|
10.0 miles
|
SSE |
8.1 mph
|
-
|
N/A |
|
Scattered Clouds |
| 12:52 PM |
86.0 °F
|
64.9 °F
|
49% |
30.07 in
|
10.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Scattered Clouds |
| 1:52 PM |
88.0 °F
|
66.9 °F
|
49% |
30.06 in
|
10.0 miles
|
South |
9.2 mph
|
-
|
N/A |
|
Scattered Clouds |
| 2:52 PM |
88.0 °F
|
68.0 °F
|
51% |
30.04 in
|
10.0 miles
|
South |
10.4 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 3:52 PM |
89.1 °F
|
69.1 °F
|
52% |
30.02 in
|
10.0 miles
|
South |
10.4 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 4:52 PM |
84.9 °F
|
69.1 °F
|
59% |
30.01 in
|
10.0 miles
|
South |
11.5 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 5:52 PM |
84.0 °F
|
70.0 °F
|
63% |
30.01 in
|
10.0 miles
|
South |
10.4 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 5:57 PM |
84.2 °F
|
69.8 °F
|
62% |
30.02 in
|
10.0 miles
|
South |
10.4 mph
|
-
|
N/A |
Thunderstorm
|
Thunderstorm |
| 6:35 PM |
78.8 °F
|
66.2 °F
|
65% |
30.02 in
|
10.0 miles
|
SSE |
16.1 mph
|
29.9 mph
|
0.01 in
|
Thunderstorm
|
Thunderstorm |
| 6:37 PM |
78.8 °F
|
66.2 °F
|
65% |
30.02 in
|
10.0 miles
|
SSE |
11.5 mph
|
24.2 mph
|
0.01 in
|
Thunderstorm
|
Thunderstorm |
| 6:52 PM |
79.0 °F
|
68.0 °F
|
69% |
30.01 in
|
10.0 miles
|
South |
6.9 mph
|
-
|
0.01 in
|
|
Mostly Cloudy |
| 7:52 PM |
79.0 °F
|
70.0 °F
|
74% |
30.01 in
|
10.0 miles
|
ESE |
9.2 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 8:52 PM |
77.0 °F
|
70.0 °F
|
79% |
30.00 in
|
10.0 miles
|
SE |
6.9 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 9:52 PM |
77.0 °F
|
70.0 °F
|
79% |
30.03 in
|
10.0 miles
|
SSE |
6.9 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 10:52 PM |
75.9 °F
|
70.0 °F
|
82% |
30.01 in
|
10.0 miles
|
SSE |
6.9 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 11:52 PM |
75.9 °F
|
71.1 °F
|
85% |
30.00 in
|
10.0 miles
|
SSE |
6.9 mph
|
-
|
N/A |
|
Mostly Cloudy |
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