Weather observations for the past three days for
Washington/Dulles International Airport, DC
Metric (Imperial)
Date Time (edt) Wind (kph) Vis. (km) Weather Sky Cond. Temperature (ºC) Relative Humidity Wind Chill (°C) Heat Index (°C) Pressure Precipitation (cm)
Air Dwpt 6 hour altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
Max. Min.
27 14:52 N 26 16.09 Overcast SCT026 OVC047 9.4 4.4 71% 6 76.33 1017.6
27 13:52 N 22 G 39 16.09 Overcast BKN022 BKN029 OVC080 10.6 6.1 16.1 10.6 74% 76.35 1017.8 0.28
27 12:52 NE 22 16.09 Overcast BKN016 OVC020 11.7 8.9 83% 76.3 1017.0
27 11:52 N 20 G 35 16.09 Overcast FEW022 BKN029 BKN060 OVC140 13.3 9.4 77% 76.23 1016.1
27 10:52 N 26 G 37 14.48 Light Rain FEW010 SCT026 BKN050 BKN130 13.9 10.6 81% 76.17 1015.3 0.28
27 09:52 N 17 11.27 Light Rain FEW010 BKN030 BKN045 OVC130 13.3 11.7 90% 76.1 1014.3 0.1
27 08:52 N 26 G 39 12.87 Light Rain SCT012 BKN030 OVC080 14.4 12.8 90% 75.97 1012.7 0.18
27 07:52 NW 13 12.87 Light Rain FEW018 SCT045 BKN060 OVC140 16.1 15 22.2 16.1 93% 75.92 1012.1 0.1 0.1
27 06:52 N 15 16.09 Light Rain FEW018 SCT043 BKN060 OVC140 16.7 14.4 86% 75.79 1010.2
27 05:52 N 20 16.09 Mostly Cloudy BKN032 BKN065 19.4 14.4 73% 75.64 1008.0
27 04:52 N 17 16.09 A Few Clouds FEW120 20.6 13.9 66% 75.57 1007.0
27 03:52 NW 6 16.09 Overcast BKN150 OVC180 20 11.7 59% 75.54 1006.8
27 02:52 NW 17 16.09 Overcast OVC150 22.2 11.7 52% 75.51 1006.4
27 01:52 SW 19 16.09 Overcast OVC170 22.2 11.7 24.4 22.2 52% 75.51 1006.4
27 00:52 SW 22 G 37 16.09 Overcast OVC240 22.8 11.7 50% 75.51 1006.4
26 23:52 SW 22 G 41 16.09 Mostly Cloudy BKN250 22.8 11.7 50% 75.49 1006.1
26 22:52 S 26 G 43 16.09 Partly Cloudy SCT250 22.8 11.1 48% 75.46 1005.8
26 21:52 S 33 G 46 16.09 A Few Clouds and Breezy FEW200 23.3 11.1 46% 75.41 1005.1
26 20:52 S 24 G 52 16.09 A Few Clouds FEW200 23.3 11.1 46% 75.51 1006.5
26 19:52 S 26 G 39 16.09 Mostly Cloudy FEW120 BKN200 23.9 11.1 26.7 23.9 45% 25 75.51 1006.6
26 18:52 S 26 G 35 16.09 Mostly Cloudy FEW110 BKN200 25 11.1 42% 26 75.59 1007.7
26 17:52 SW 31 G 52 16.09 Mostly Cloudy SCT110 BKN200 26.1 11.7 41% 26 75.67 1008.5
26 16:52 SW 24 G 41 16.09 Mostly Cloudy BKN100 26.1 11.1 39% 26 75.74 1009.5
26 15:52 SW 28 G 48 16.09 Mostly Cloudy FEW110 SCT150 BKN250 26.7 10.6 37% 26 75.79 1010.1
26 14:52 S 30 G 43 16.09 Partly Cloudy FEW180 SCT250 26.1 9.4 35% 26 75.87 1011.3
26 13:52 S 15 G 33 16.09 Partly Cloudy FEW180 SCT250 25 8.3 25 11.7 35% 26 76.02 1013.2
26 12:52 S 22 G 37 16.09 Mostly Cloudy BKN180 BKN250 23.3 7.8 37% 76.07 1014.0
26 11:52 SW 20 16.09 Mostly Cloudy BKN180 BKN250 22.2 6.1 35% 76.12 1014.8
26 10:52 S 19 16.09 Mostly Cloudy BKN180 BKN250 18.9 4.4 39% 76.2 1015.6
26 09:52 S 19 G 35 16.09 Mostly Cloudy SCT160 BKN240 15.6 3.3 44% 76.23 1016.3
26 08:52 S 19 16.09 Mostly Cloudy SCT170 BKN250 13.3 2.2 47% 76.28 1016.7
26 07:52 S 20 16.09 Mostly Cloudy SCT100 BKN250 11.7 1.7 12.2 10.6 51% 76.28 1016.8
26 06:52 S 17 16.09 Partly Cloudy FEW100 SCT250 10.6 1.1 52% 76.28 1016.7
26 05:52 S 20 16.09 Partly Cloudy FEW100 SCT250 11.1 1.1 50% 76.25 1016.3
26 04:52 S 15 16.09 Partly Cloudy SCT100 10.6 1.7 54% 76.25 1016.4
26 03:52 S 22 16.09 Mostly Cloudy BKN100 11.7 1.7 51% 76.23 1016.2
26 02:52 S 19 16.09 Overcast OVC100 11.7 1.7 51% 76.3 1017.0
26 01:52 S 15 16.09 Overcast OVC100 11.1 1.7 12.8 10.6 53% 76.38 1018.0
26 00:52 S 11 16.09 Partly Cloudy FEW100 SCT160 11.1 1.7 53% 76.4 1018.7
25 23:52 S 13 16.09 Overcast OVC160 12.2 1.7 49% 76.45 1019.3
25 22:52 S 15 16.09 Overcast OVC160 12.2 2.2 51% 76.45 1019.3
25 21:52 SE 15 16.09 Overcast OVC150 12.2 2.2 51% 76.5 1019.9
25 20:52 SE 15 16.09 Overcast OVC150 12.8 1.1 45% 76.56 1020.8
25 19:52 SE 11 16.09 Mostly Cloudy BKN140 BKN160 BKN250 12.8 -1.7 15.6 12.8 37% 76.56 1020.8
25 18:52 S 17 G 31 16.09 Mostly Cloudy SCT130 BKN160 BKN250 15 -7.2 21% 76.58 1021.0
25 17:52 S 11 G 30 16.09 Mostly Cloudy SCT120 BKN250 15.6 -3.9 26% 76.61 1021.2
25 16:52 S 19 G 30 16.09 Mostly Cloudy BKN120 BKN250 14.4 -3.3 29% 76.66 1022.0
25 15:52 SE 19 G 30 16.09 Mostly Cloudy BKN120 BKN250 14.4 -2.8 31% 76.71 1022.7
25 14:52 S 19 G 37 16.09 Mostly Cloudy SCT120 BKN250 14.4 -1.1 35% 76.78 1023.7
25 13:52 S 13 G 31 16.09 Mostly Cloudy SCT120 BKN250 13.9 -1.1 13.9 4.4 36% 76.91 1025.5
25 12:52 S 17 16.09 Mostly Cloudy BKN110 BKN250 12.2 -1.1 40% 77.04 1026.9
25 11:52 S 17 16.09 Mostly Cloudy BKN110 10.6 -1.1 45% 77.09 1028.0
25 10:52 S 13 16.09 Mostly Cloudy SCT120 BKN250 9.4 -1.1 48% 8 77.14 1028.5
25 09:52 S 11 16.09 Mostly Cloudy BKN110 BKN250 7.8 -1.1 54% 6 77.11 1028.2
25 08:52 S 11 16.09 Mostly Cloudy SCT120 BKN160 BKN220 5.6 -1.7 60% 3 77.14 1028.5
25 07:52 S 9 16.09 Mostly Cloudy FEW120 BKN160 3.9 -1.7 5.6 3.9 67% 2 77.14 1028.4
25 06:52 S 6 16.09 Mostly Cloudy SCT120 BKN160 3.9 -1.7 67% 77.11 1028.3
25 05:52 S 7 16.09 A Few Clouds FEW120 4.4 -1.7 65% 3 77.09 1027.8
25 04:52 S 11 16.09 Overcast OVC180 3.9 -1.7 67% 1 77.06 1027.5
25 03:52 S 9 16.09 Mostly Cloudy BKN150 4.4 -1.7 65% 2 77.06 1027.5
25 02:52 S 9 16.09 Overcast OVC150 5 -1.7 62% 3 77.11 1028.1
25 01:52 S 15 16.09 Overcast FEW120 OVC150 5.6 -1.7 7.8 3.9 60% 3 77.09 1028.0
25 00:52 S 11 16.09 Overcast OVC150 6.1 -1.7 58% 4 77.11 1028.2
24 23:52 S 7 16.09 Overcast OVC180 6.1 -1.7 58% 5 77.14 1028.6
24 22:52 S 9 16.09 Overcast OVC180 6.7 -2.8 51% 5 77.11 1028.2
24 21:52 SE 9 16.09 Partly Cloudy SCT250 6.7 -5 43% 5 77.11 1028.3
24 20:52 SE 9 16.09 Mostly Cloudy BKN250 6.7 -5 43% 5 77.09 1028.1
24 19:52 SW 7 16.09 Mostly Cloudy BKN250 6.7 -5.6 11.1 6.7 41% 6 77.06 1027.7
24 18:52 SE 11 16.09 Mostly Cloudy BKN250 9.4 -7.8 29% 8 77.06 1027.7
24 17:52 S 15 G 35 16.09 Mostly Cloudy BKN250 10.6 -7.2 28% 77.06 1027.4
24 16:52 Vrbl 9 16.09 A Few Clouds FEW250 10.6 -8.3 26% 77.06 1027.5
24 15:52 Vrbl 7 16.09 A Few Clouds FEW250 10 -7.2 29% 9 77.11 1028.2
Date Time (edt) Wind (kph) Vis. (km) Weather Sky Cond. Air Dwpt Max. Min. Relative Humidity Wind Chill (°C) Heat Index (°C) altimeter (cm) sea level (mb) 1 hr 3 hr 6 hr
6 hour
Temperature (ºC) Pressure Precipitation (cm)