Weather observations for the past three days for
Washington/Dulles International Airport, DC
Metric (Imperial)
Date Time (est) 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.
01 02:52 N 26 G 37 16.09 Mostly Cloudy SCT150 BKN200 BKN250 -9.4 -16.1 59% -18 76.12 1015.2
01 01:52 N 22 G 39 16.09 Mostly Cloudy SCT150 BKN200 -9.4 -16.1 59% -17 76.15 1015.5
01 00:52 N 37 G 48 16.09 Overcast and Breezy BKN150 OVC180 -8.9 -16.1 -6.7 -8.9 56% -18 76.12 1015.2
31 23:52 NW 22 G 46 16.09 Overcast SCT140 OVC160 -8.3 -16.1 54% -16 76.25 1016.9
31 22:52 NW 26 G 48 16.09 Overcast FEW060 BKN140 OVC170 -8.3 -16.1 54% -16 76.3 1017.8
31 21:52 N 24 G 46 16.09 Overcast FEW090 OVC140 -7.8 -16.1 52% -15 76.33 1017.9
31 20:52 N 30 G 43 16.09 Overcast OVC140 -7.2 -16.1 49% -15 76.38 1018.9
31 19:52 N 24 G 35 16.09 Overcast OVC140 -7.2 -15.6 52% -14 76.38 1018.6
31 18:52 N 28 G 39 16.09 Overcast OVC140 -6.7 -15.6 -6.1 -7.2 50% -14 76.4 1019.1
31 17:52 N 22 16.09 Mostly Cloudy SCT150 BKN250 -6.7 -15.6 50% -14 76.43 1019.5
31 16:52 N 24 16.09 Fair CLR -6.7 -15.6 50% -14 76.43 1019.3
31 15:52 N 24 G 35 16.09 Partly Cloudy FEW150 SCT250 -6.7 -15.6 50% -14 76.45 1019.7
31 14:52 NW 19 G 35 16.09 Partly Cloudy SCT150 SCT250 -6.7 -16.1 48% -13 76.48 1020.2
31 13:52 N 17 16.09 Mostly Cloudy FEW033 SCT170 BKN250 -6.7 -15.6 50% -13 76.53 1020.8
31 12:52 N 19 16.09 Mostly Cloudy FEW033 FEW170 BKN250 -7.2 -16.1 -7.2 -12.8 49% -14 76.63 1022.0
31 11:52 N 13 16.09 Mostly Cloudy FEW033 FEW170 BKN250 -7.8 -16.7 49% -13 76.71 1023.1
31 10:52 N 11 16.09 Mostly Cloudy FEW033 FEW170 BKN250 -8.9 -17.8 49% -14 76.78 1024.1
31 09:52 NW 13 16.09 Mostly Cloudy FEW170 BKN250 -10 -18.3 51% -16 76.78 1024.3
31 08:52 N 13 16.09 Mostly Cloudy SCT170 BKN250 -11.7 -18.9 56% -18 76.81 1024.5
31 07:52 NW 9 16.09 Mostly Cloudy SCT160 BKN250 -12.8 -19.4 58% -18 76.78 1024.3
31 06:52 NW 15 16.09 Mostly Cloudy BKN150 BKN250 -12.2 -19.4 -10.6 -12.8 55% -19 76.81 1024.4
31 05:52 NW 13 16.09 Overcast SCT150 OVC200 -12.2 -19.4 55% -18 76.81 1024.4
31 04:52 N 11 16.09 Partly Cloudy SCT120 SCT250 -11.7 -19.4 53% -17 76.81 1024.4
31 03:52 NW 11 16.09 A Few Clouds FEW140 -12.8 -18.9 61% -18 76.84 1024.9
31 02:52 N 15 16.09 Mostly Cloudy SCT110 BKN150 -11.1 -19.4 51% -17 76.86 1025.3
31 01:52 NW 17 16.09 Mostly Cloudy SCT130 SCT160 BKN250 -11.1 -19.4 51% -18 76.89 1025.4
31 00:52 NW 9 16.09 Mostly Cloudy FEW120 SCT140 BKN250 -10.6 -18.9 -7.2 -10.6 51% -15 76.91 1025.8
30 23:52 N 19 16.09 Mostly Cloudy FEW120 BKN150 -9.4 -18.9 46% -16 76.89 1025.6
30 22:52 N 11 16.09 Mostly Cloudy FEW120 BKN150 -9.4 -19.4 44% -14 76.89 1025.7
30 21:52 N 17 16.09 Partly Cloudy SCT150 -8.9 -19.4 43% -15 76.86 1025.2
30 20:52 N 13 16.09 Partly Cloudy SCT150 -8.3 -18.9 43% -14 76.86 1025.1
30 19:52 N 11 16.09 Mostly Cloudy BKN150 -7.8 -18.9 41% -12 76.81 1024.7
30 18:52 NW 13 16.09 A Few Clouds FEW150 -7.2 -19.4 -6.1 -7.2 37% -12 76.81 1024.5
30 17:52 NW 9 16.09 Partly Cloudy FEW150 SCT250 -7.2 -19.4 37% -11 76.81 1024.4
30 16:52 NW 13 16.09 Mostly Cloudy FEW150 BKN250 -6.7 -20 34% -12 76.81 1024.4
30 15:52 N 13 16.09 Mostly Cloudy FEW150 BKN250 -6.7 -20.6 32% -12 76.81 1024.6
30 14:52 N 11 16.09 Mostly Cloudy FEW150 BKN250 -6.7 -20.6 32% -11 76.84 1024.8
30 13:52 N 13 16.09 Mostly Cloudy BKN250 -6.7 -20.6 32% -12 76.86 1025.2
30 12:52 NW 17 16.09 Mostly Cloudy BKN250 -7.2 -20.6 -7.2 -12.8 34% -13 76.94 1026.1
30 11:52 NW 15 16.09 Mostly Cloudy BKN250 -8.3 -21.1 35% -14 76.99 1026.8
30 10:52 NW 13 16.09 Mostly Cloudy BKN250 -8.9 -20.6 38% -14 77.04 1027.6
30 09:52 NW 17 16.09 Mostly Cloudy BKN180 BKN250 -10 -19.4 47% -17 77.04 1027.6
30 08:52 NW 9 16.09 Mostly Cloudy BKN150 BKN250 -10.6 -18.3 54% -15 77.04 1027.4
30 07:52 NW 9 16.09 Mostly Cloudy SCT120 BKN220 -11.7 -17.8 61% -16 76.96 1026.6
30 06:52 NW 9 16.09 A Few Clouds FEW100 -11.7 -17.8 -9.4 -14.4 61% -16 76.94 1026.2
30 05:52 NW 20 16.09 Fair CLR -10.6 -17.2 59% -18 76.89 1025.7
30 04:52 Calm 16.09 A Few Clouds FEW100 -13.3 -18.3 66% 76.91 1025.8
30 03:52 Calm 16.09 A Few Clouds FEW100 -12.2 -18.3 61% 76.89 1025.6
30 02:52 W 6 16.09 A Few Clouds FEW100 -10 -17.8 53% 76.89 1025.5
30 01:52 NW 11 16.09 Fair CLR -10 -17.2 56% -15 76.86 1025.1
30 00:52 NW 15 16.09 Fair CLR -10 -17.2 -6.7 -10.6 56% -16 76.84 1024.9
29 23:52 NW 11 16.09 Fair CLR -9.4 -17.2 53% -14 76.89 1025.4
29 22:52 NW 17 16.09 A Few Clouds FEW200 -8.9 -17.2 51% -15 76.86 1025.3
29 21:52 NW 15 16.09 A Few Clouds FEW200 -8.3 -17.2 49% -14 76.89 1025.4
29 20:52 NW 11 G 35 16.09 Partly Cloudy SCT200 -7.2 -17.2 45% -12 76.89 1025.4
29 19:52 NW 28 G 44 16.09 Partly Cloudy SCT200 -7.2 -17.2 45% -15 76.81 1024.5
29 18:52 NW 20 16.09 Partly Cloudy FEW060 SCT250 -6.7 -17.2 -4.4 -6.7 43% -13 76.81 1024.4
29 17:52 NW 22 G 37 16.09 A Few Clouds FEW060 FEW200 -6.7 -16.7 45% -14 76.76 1023.9
29 16:52 NW 20 16.09 Partly Cloudy FEW060 SCT200 -5.6 -16.7 42% -12 76.76 1023.7
29 15:52 NW 22 16.09 Partly Cloudy FEW060 SCT200 -5 -16.1 42% -11 76.73 1023.4
29 14:52 NW 20 16.09 Partly Cloudy SCT060 SCT200 -4.4 -16.1 40% -10 76.73 1023.3
29 13:52 NW 15 G 33 16.09 Partly Cloudy SCT060 -5.6 -17.2 40% -11 76.73 1023.3
29 12:52 W 19 G 39 16.09 A Few Clouds FEW060 -6.1 -17.2 -5.6 -10.6 41% -12 76.76 1023.9
29 11:52 W 19 G 33 16.09 A Few Clouds FEW060 -6.7 -18.3 40% -13 76.81 1024.7
29 10:52 W 20 G 30 16.09 A Few Clouds FEW060 -7.2 -18.9 39% -14 76.86 1025.2
29 09:52 NW 11 16.09 A Few Clouds FEW060 -8.3 -19.4 41% -13 76.86 1025.2
29 08:52 NW 6 16.09 Mostly Cloudy FEW050 BKN120 -9.4 -20 42% 76.86 1025.1
29 07:52 NW 17 16.09 A Few Clouds FEW050 -10.6 -20.6 44% -17 76.78 1024.2
29 06:52 NW 28 G 37 16.09 Fair CLR -10.6 -20.6 -8.3 -10.6 44% -19 76.73 1023.6
29 05:52 N 19 16.09 Fair CLR -10 -20 44% -17 76.71 1023.0
29 04:52 NW 19 G 35 16.09 Fair CLR -10 -19.4 47% -17 76.66 1022.4
29 03:52 NW 19 16.09 Fair CLR -9.4 -18.9 46% -16 76.63 1021.9
Date Time (est) 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)