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History for Washington, DC
Monday, June 29, 2009
Daily Summary |
| | Actual | Average | Record |
| Temperature |
| Mean Temperature |
76 °F
|
78 °F
|
|
| Max Temperature |
86 °F
|
87 °F
|
101 °F
(1934) |
| Min Temperature |
66 °F
|
68 °F
|
54 °F
(1888) |
| Degree Days |
| Heating Degree Days |
0 |
0 |
|
| Month to date heating degree days |
5 |
5 |
|
| Since 1 June heating degree days |
5 |
5 |
|
| Since 1 July heating degree days |
4210 |
4055 |
|
| Cooling Degree Days |
11 |
13 |
|
| Month to date cooling degree days |
261 |
291 |
|
| Year to date cooling degree days |
391 |
423 |
|
| Since 1 June cooling degree days |
261 |
291 |
|
| Growing Degree Days | 25 (Base 50) |
|
|
| Moisture |
| Dew Point |
58 °F
|
|
|
| Average Humidity |
59 |
|
|
| Maximum Humidity |
87 |
|
|
| Minimum Humidity |
31 |
|
|
| Precipitation |
| Precipitation |
0.00 in
|
0.11 in
|
2.05 in
(1963) |
| Month to date precipitation |
5.84 |
3.02 |
|
| Year to date precipitation |
23.11 |
19.05 |
|
| Snow |
| Snow |
0.00 in
|
0.00 in
|
-
() |
| Month to date snowfall |
0.0 |
0.0 |
|
| Since 1 July snowfall |
7.5 |
15.2 |
|
| Snow Depth |
0.00 in
|
|
|
| Sea Level Pressure |
| Sea Level Pressure |
29.57 in
|
|
|
| Wind |
| Wind Speed |
8 mph
(WSW) |
|
|
| Max Wind Speed |
18 mph
|
|
|
| Max Gust Speed |
24 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 |
70.0 °F
|
64.9 °F
|
84% |
29.60 in
|
9.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Scattered Clouds |
| 1:52 AM |
70.0 °F
|
64.9 °F
|
84% |
29.59 in
|
10.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Mostly Cloudy |
| 2:52 AM |
70.0 °F
|
64.9 °F
|
84% |
29.57 in
|
9.0 miles
|
Calm |
Calm |
-
|
N/A |
|
Mostly Cloudy |
| 3:52 AM |
69.1 °F
|
64.9 °F
|
87% |
29.59 in
|
7.0 miles
|
NNW |
10.4 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 4:52 AM |
66.9 °F
|
63.0 °F
|
87% |
29.60 in
|
7.0 miles
|
NNW |
6.9 mph
|
-
|
N/A |
|
Scattered Clouds |
| 5:52 AM |
66.0 °F
|
61.0 °F
|
84% |
29.60 in
|
8.0 miles
|
North |
5.8 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 6:52 AM |
69.1 °F
|
61.0 °F
|
75% |
29.61 in
|
10.0 miles
|
WNW |
3.5 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 7:52 AM |
72.0 °F
|
59.0 °F
|
64% |
29.61 in
|
10.0 miles
|
West |
4.6 mph
|
-
|
N/A |
|
Scattered Clouds |
| 8:52 AM |
75.9 °F
|
55.9 °F
|
50% |
29.62 in
|
10.0 miles
|
Variable |
4.6 mph
|
-
|
N/A |
|
Partly Cloudy |
| 9:52 AM |
77.0 °F
|
52.0 °F
|
42% |
29.60 in
|
10.0 miles
|
NNW |
8.1 mph
|
-
|
N/A |
|
Partly Cloudy |
| 10:52 AM |
79.0 °F
|
54.0 °F
|
42% |
29.60 in
|
10.0 miles
|
West |
12.7 mph
|
18.4 mph
|
N/A |
|
Partly Cloudy |
| 11:52 AM |
81.0 °F
|
55.0 °F
|
41% |
29.59 in
|
10.0 miles
|
West |
12.7 mph
|
16.1 mph
|
N/A |
|
Partly Cloudy |
| 12:52 PM |
82.0 °F
|
55.0 °F
|
39% |
29.58 in
|
10.0 miles
|
WSW |
10.4 mph
|
16.1 mph
|
N/A |
|
Scattered Clouds |
| 1:52 PM |
82.9 °F
|
54.0 °F
|
37% |
29.56 in
|
10.0 miles
|
WSW |
16.1 mph
|
21.9 mph
|
N/A |
|
Scattered Clouds |
| 2:52 PM |
84.9 °F
|
54.0 °F
|
34% |
29.55 in
|
10.0 miles
|
WSW |
15.0 mph
|
20.7 mph
|
N/A |
|
Scattered Clouds |
| 3:52 PM |
82.9 °F
|
54.0 °F
|
37% |
29.54 in
|
10.0 miles
|
WSW |
9.2 mph
|
19.6 mph
|
N/A |
|
Scattered Clouds |
| 4:52 PM |
84.9 °F
|
54.0 °F
|
34% |
29.53 in
|
10.0 miles
|
SW |
13.8 mph
|
17.3 mph
|
N/A |
|
Mostly Cloudy |
| 5:52 PM |
84.9 °F
|
51.1 °F
|
31% |
29.52 in
|
10.0 miles
|
WSW |
8.1 mph
|
-
|
N/A |
|
Scattered Clouds |
| 6:52 PM |
84.0 °F
|
50.0 °F
|
31% |
29.52 in
|
10.0 miles
|
West |
9.2 mph
|
17.3 mph
|
N/A |
|
Partly Cloudy |
| 7:52 PM |
81.0 °F
|
57.9 °F
|
45% |
29.54 in
|
10.0 miles
|
SSW |
10.4 mph
|
-
|
N/A |
|
Scattered Clouds |
| 8:52 PM |
78.1 °F
|
59.0 °F
|
52% |
29.55 in
|
10.0 miles
|
SW |
5.8 mph
|
-
|
N/A |
|
Partly Cloudy |
| 9:52 PM |
75.9 °F
|
62.1 °F
|
62% |
29.57 in
|
10.0 miles
|
SSW |
5.8 mph
|
-
|
N/A |
|
Mostly Cloudy |
| 10:52 PM |
75.9 °F
|
63.0 °F
|
64% |
29.58 in
|
10.0 miles
|
SSW |
3.5 mph
|
-
|
N/A |
|
Partly Cloudy |
| 11:52 PM |
73.9 °F
|
63.0 °F
|
68% |
29.57 in
|
10.0 miles
|
SW |
3.5 mph
|
-
|
N/A |
|
Partly Cloudy |
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