September 2018 Weather in Washington DC — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
58
61
64
67
70
73
76
79
82
85
88
91
94
Sat, Sep 1
Lo:75
12 am
Hi:77
8
Lo:75
6 am
Hi:82
11
Lo:81
12 pm
Hi:88
9
Lo:75
6 pm
Hi:82
8
Sun, Sep 2
Lo:73
12 am
Hi:75
2
Lo:73
6 am
Hi:82
2
Lo:84
12 pm
Hi:90
6
Lo:81
6 pm
Hi:88
6
Mon, Sep 3
Lo:79
12 am
Hi:81
5
Lo:79
6 am
Hi:90
5
Lo:91
12 pm
Hi:91
10
Lo:82
6 pm
Hi:90
6
Tue, Sep 4
Lo:79
12 am
Hi:82
4
Lo:79
6 am
Hi:93
1
Lo:82
12 pm
Hi:93
7
Lo:81
6 pm
Hi:84
2
Wed, Sep 5
Lo:79
12 am
Hi:81
2
Lo:79
6 am
Hi:90
4
Lo:91
12 pm
Hi:91
9
Lo:82
6 pm
Hi:90
6
Thu, Sep 6
Lo:79
12 am
Hi:82
6
Lo:79
6 am
Hi:90
6
Lo:91
12 pm
Hi:93
11
Lo:82
6 pm
Hi:90
7
Fri, Sep 7
Lo:75
12 am
Hi:81
7
Lo:77
6 am
Hi:88
4
Lo:77
12 pm
Hi:90
6
Lo:73
6 pm
Hi:77
11
Sat, Sep 8
Lo:73
12 am
Hi:75
6
Lo:73
6 am
Hi:75
12
Lo:66
12 pm
Hi:73
17
Lo:63
6 pm
Hi:66
12
Sun, Sep 9
Lo:63
12 am
Hi:64
13
Lo:63
6 am
Hi:64
16
Lo:66
12 pm
Hi:66
15
Lo:64
6 pm
Hi:66
18
Mon, Sep 10
Lo:64
12 am
Hi:66
12
Lo:64
6 am
Hi:72
9
Lo:72
12 pm
Hi:75
7
Lo:73
6 pm
Hi:75
6
Tue, Sep 11
Lo:72
12 am
Hi:73
6
Lo:72
6 am
Hi:75
7
Lo:75
12 pm
Hi:75
6
Lo:72
6 pm
Hi:75
9
Wed, Sep 12
Lo:72
12 am
Hi:72
5
Lo:72
6 am
Hi:81
4
Lo:81
12 pm
Hi:84
2
Lo:75
6 pm
Hi:82
6
Thu, Sep 13
Lo:73
12 am
Hi:75
7
Lo:73
6 am
Hi:77
11
Lo:77
12 pm
Hi:81
11
Lo:75
6 pm
Hi:79
12
Fri, Sep 14
Lo:72
12 am
Hi:75
12
Lo:73
6 am
Hi:75
16
Lo:75
12 pm
Hi:79
14
Lo:73
6 pm
Hi:77
12
Sat, Sep 15
Lo:72
12 am
Hi:73
11
Lo:70
6 am
Hi:79
12
Lo:79
12 pm
Hi:82
12
Lo:72
6 pm
Hi:79
7
Sun, Sep 16
Lo:70
12 am
Hi:72
6
Lo:70
6 am
Hi:75
10
Lo:79
12 pm
Hi:82
11
Lo:73
6 pm
Hi:79
10
Mon, Sep 17
Lo:72
12 am
Hi:75
7
Lo:75
6 am
Hi:81
10
Lo:77
12 pm
Hi:81
12
Lo:77
6 pm
Hi:79
9
Tue, Sep 18
Lo:75
12 am
Hi:79
8
Lo:75
6 am
Hi:81
7
Lo:79
12 pm
Hi:82
10
Lo:73
6 pm
Hi:81
9
Wed, Sep 19
Lo:73
12 am
Hi:75
9
Lo:73
6 am
Hi:84
11
Lo:84
12 pm
Hi:88
11
Lo:73
6 pm
Hi:82
2
Thu, Sep 20
Lo:70
12 am
Hi:73
4
Lo:70
6 am
Hi:79
4
Lo:79
12 pm
Hi:82
7
Lo:73
6 pm
Hi:77
10
Fri, Sep 21
Lo:72
12 am
Hi:72
8
Lo:68
6 am
Hi:72
9
Lo:72
12 pm
Hi:79
9
Lo:75
6 pm
Hi:77
11
Sat, Sep 22
Lo:73
12 am
Hi:75
8
Lo:73
6 am
Hi:77
9
Lo:73
12 pm
Hi:81
12
Lo:64
6 pm
Hi:70
11
Sun, Sep 23
Lo:61
12 am
Hi:64
8
Lo:61
6 am
Hi:63
9
Lo:64
12 pm
Hi:64
10
Lo:63
6 pm
Hi:64
10
Mon, Sep 24
Lo:63
12 am
Hi:64
9
Lo:64
6 am
Hi:66
9
Lo:66
12 pm
Hi:68
12
Lo:66
6 pm
Hi:66
10
Tue, Sep 25
Lo:66
12 am
Hi:68
7
Lo:70
6 am
Hi:79
4
Lo:79
12 pm
Hi:81
8
Lo:73
6 pm
Hi:79
6
Wed, Sep 26
Lo:72
12 am
Hi:73
7
Lo:73
6 am
Hi:82
9
Lo:82
12 pm
Hi:86
12
Lo:73
6 pm
Hi:77
8
Thu, Sep 27
Lo:68
12 am
Hi:73
11
Lo:66
6 am
Hi:68
11
Lo:59
12 pm
Hi:66
10
Lo:59
6 pm
Hi:61
9
Fri, Sep 28
Lo:61
12 am
Hi:61
6
Lo:61
6 am
Hi:68
9
Lo:70
12 pm
Hi:75
4
Lo:64
6 pm
Hi:72
4
Sat, Sep 29
Lo:63
12 am
Hi:64
2
Lo:64
6 am
Hi:75
7
Lo:77
12 pm
Hi:81
9
Lo:66
6 pm
Hi:73
6
Sun, Sep 30
Lo:61
12 am
Hi:64
4
Lo:63
6 am
Hi:72
6
Lo:73
12 pm
Hi:75
7
Lo:66
6 pm
Hi:72
6
Saturday, September 1, 2018, 12:00 am — 6:00 am
77 / 75 °F
Low clouds.
Humidity: 88%
Barometer: 30.21 "Hg
NE
Wind: 8.078 mph
High & Low Weather Summary for September 2018
Temperature | Humidity | Pressure | |
---|---|---|---|
High | 94 °F (Sep 4, 11:52 am) | 96% (Sep 11, 5:52 am) | 30.37 "Hg (Sep 11, 5:52 am) |
Low | 59 °F (Sep 27, 4:20 pm) | 42% (Sep 29, 2:52 pm) | 29.77 "Hg (Sep 18, 1:52 pm) |
Average | 74 °F | 81% | 30.13 "Hg |
* Reported Sep 1 12:04 am — Sep 30 11:52 pm, Washington DC. Weather by CustomWeather, © 2025 |
Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records
Washington DC Weather History for September 1, 2018
Scroll right to see more
Conditions | Comfort | |||||||
---|---|---|---|---|---|---|---|---|
Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
12:04 am Sat, Sep 1 | 76 °F | Thunderstorms. Mostly cloudy. | 3 mph | ↑ | 82% | 30.21 "Hg | 10 mi | |
12:36 am | 76 °F | Partly cloudy. | 6 mph | ↑ | 85% | 30.20 "Hg | 10 mi | |
12:52 am | 76 °F | Partly cloudy. | 7 mph | ↑ | 85% | 30.20 "Hg | 10 mi | |
1:52 am | 75 °F | Overcast. | 9 mph | ↑ | 88% | 30.21 "Hg | 10 mi | |
2:10 am | 75 °F | Overcast. | 7 mph | ↑ | 88% | 30.21 "Hg | 10 mi | |
2:31 am | 75 °F | Mostly cloudy. | 7 mph | ↑ | 88% | 30.21 "Hg | 10 mi | |
2:52 am | 75 °F | Low clouds. | 9 mph | ↑ | 88% | 30.20 "Hg | 10 mi | |
3:21 am | 76 °F | Mostly cloudy. | 12 mph | ↑ | 88% | 30.20 "Hg | 10 mi | |
3:43 am | 76 °F | Mostly cloudy. | 9 mph | ↑ | 88% | 30.21 "Hg | 10 mi | |
3:52 am | 76 °F | Mostly cloudy. | 9 mph | ↑ | 88% | 30.21 "Hg | 10 mi | |
4:35 am | 76 °F | Light rain. Mostly cloudy. | 10 mph | ↑ | 91% | 30.20 "Hg | 10 mi | |
4:52 am | 77 °F | Low clouds. | 8 mph | ↑ | 88% | 30.20 "Hg | 10 mi | |
5:15 am | 76 °F | Rain. Fog. | 5 mph | ↑ | 91% | 30.21 "Hg | 3 mi | |
5:29 am | 76 °F | Light rain. Mostly cloudy. | 7 mph | ↑ | 91% | 30.21 "Hg | 9 mi | |
5:52 am | 76 °F | Low clouds. | 10 mph | ↑ | 91% | 30.21 "Hg | 10 mi | |
6:19 am | 76 °F | Low clouds. | 9 mph | ↑ | 91% | 30.22 "Hg | 10 mi | |
6:52 am | 76 °F | Light rain. Low clouds. | 9 mph | ↑ | 91% | 30.24 "Hg | 10 mi | |
7:13 am | 76 °F | Light rain. Mostly cloudy. | 12 mph | ↑ | 91% | 30.23 "Hg | 10 mi | |
7:23 am | 76 °F | Light rain. Cloudy. | 12 mph | ↑ | 91% | 30.24 "Hg | 7 mi | |
7:33 am | 76 °F | Rain. Fog. | 12 mph | ↑ | 91% | 30.24 "Hg | 5 mi | |
7:52 am | 76 °F | Light rain. Mostly cloudy. | 9 mph | ↑ | 91% | 30.24 "Hg | 8 mi | |
8:52 am | 77 °F | Low clouds. | 9 mph | ↑ | 88% | 30.24 "Hg | 9 mi | |
9:36 am | 78 °F | Overcast. | 13 mph | ↑ | 87% | 30.24 "Hg | 10 mi | |
9:52 am | 78 °F | Overcast. | 12 mph | ↑ | 84% | 30.24 "Hg | 10 mi | |
10:43 am | 80 °F | Cloudy. | 10 mph | ↑ | 79% | 30.25 "Hg | 10 mi | |
10:52 am | 80 °F | More clouds than sun. | 9 mph | ↑ | 79% | 30.25 "Hg | 10 mi | |
11:34 am | 82 °F | Mostly cloudy. | 9 mph | ↑ | 74% | 30.25 "Hg | 10 mi | |
11:54 am | 83 °F | Broken clouds. | 9 mph | ↑ | 74% | 30.25 "Hg | 10 mi | |
12:24 pm | 83 °F | Broken clouds. | 6 mph | ↑ | 72% | 30.25 "Hg | 10 mi | |
12:56 pm | 83 °F | Partly sunny. | 8 mph | ↑ | 72% | 30.25 "Hg | 10 mi | |
1:10 pm | 84 °F | Broken clouds. | 8 mph | ↑ | 70% | 30.25 "Hg | 10 mi | |
1:52 pm | 87 °F | Scattered clouds. | 7 mph | ↑ | 63% | 30.23 "Hg | 10 mi | |
2:52 pm | 83 °F | Partly sunny. | 15 mph | ↑ | 70% | 30.22 "Hg | 10 mi | |
3:10 pm | 80 °F | Broken clouds. | 8 mph | ↑ | 74% | 30.22 "Hg | 10 mi | |
3:32 pm | 81 °F | Light rain. Partly sunny. | 12 mph | ↑ | 74% | 30.21 "Hg | 10 mi | |
4:06 pm | 82 °F | Thundershowers. Broken clouds. | 9 mph | ↑ | 70% | 30.20 "Hg | 10 mi | |
4:38 pm | 84 °F | Thunderstorms. Partly sunny. | 7 mph | ↑ | 65% | 30.20 "Hg | 10 mi | |
5:06 pm | 84 °F | Thunderstorms. Scattered clouds. | 7 mph | ↑ | 72% | 30.19 "Hg | 10 mi | |
5:20 pm | 84 °F | Scattered clouds. | 7 mph | ↑ | 72% | 30.19 "Hg | 10 mi | |
5:52 pm | 83 °F | Broken clouds. | 9 mph | ↑ | 74% | 30.19 "Hg | 10 mi | |
6:14 pm | 83 °F | Thundershowers. Broken clouds. | 10 mph | ↑ | 74% | 30.19 "Hg | 10 mi | |
6:33 pm | 83 °F | Broken clouds. | 7 mph | ↑ | 72% | 30.20 "Hg | 10 mi | |
6:52 pm | 82 °F | Broken clouds. | 7 mph | ↑ | 74% | 30.20 "Hg | 10 mi | |
7:52 pm | 82 °F | Partly cloudy. | 5 mph | ↑ | 77% | 30.22 "Hg | 10 mi | |
8:52 pm | 81 °F | Thunderstorms. Mostly cloudy. | 9 mph | ↑ | 79% | 30.22 "Hg | 10 mi | |
9:17 pm | 80 °F | Thunderstorms. Passing clouds. | 13 mph | ↑ | 81% | 30.22 "Hg | 10 mi | |
9:30 pm | 75 °F | Strong thunderstorms. Fog. | 20 mph | ↑ | 89% | 30.24 "Hg | 2 mi | |
10:13 pm | 75 °F | Thunderstorms. Overcast. | 9 mph | ↑ | 90% | 30.24 "Hg | 7 mi | |
10:25 pm | 75 °F | Light rain. Mostly cloudy. | 6 mph | ↑ | 90% | 30.23 "Hg | 10 mi | |
10:52 pm | 76 °F | Light rain. Partly cloudy. | 5 mph | ↑ | 88% | 30.23 "Hg | 10 mi | |
11:08 pm | 76 °F | Mostly cloudy. | 5 mph | ↑ | 88% | 30.22 "Hg | 10 mi | |
11:52 pm | 75 °F | Mostly cloudy. | 3 mph | ↑ | 85% | 30.22 "Hg | 10 mi | |
Weather by CustomWeather, © 2025 |