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.
09 02:52 NW 9 16.09 Fair CLR -8.9 -17.8 49% -13 77.14 1028.8
09 01:52 NW 13 16.09 Fair CLR -8.9 -17.8 49% -14 77.14 1028.7
09 00:52 NW 19 16.09 Fair CLR -8.3 -17.8 -6.1 -8.3 47% -15 77.14 1028.7
08 23:52 N 17 16.09 Fair CLR -7.8 -17.8 45% -14 77.17 1029.1
08 22:52 NW 15 16.09 Fair CLR -7.8 -17.8 45% -13 77.19 1029.5
08 21:52 NW 15 16.09 Fair CLR -7.2 -17.8 43% -13 77.19 1029.4
08 20:52 NW 11 16.09 Fair CLR -7.2 -17.8 43% -12 77.17 1029.4
08 19:52 N 13 16.09 Fair CLR -6.7 -17.8 41% -12 77.14 1028.8
08 18:52 N 13 16.09 Fair CLR -6.1 -17.8 -3.9 -6.1 39% -11 77.11 1028.6
08 17:52 N 22 G 37 16.09 A Few Clouds FEW050 -5.6 -17.8 38% -12 77.04 1027.7
08 16:52 N 26 G 46 16.09 Fair CLR -4.4 -17.8 35% -11 76.99 1027.0
08 15:52 N 30 G 43 16.09 A Few Clouds FEW045 -4.4 -16.7 38% -12 76.99 1026.8
08 14:52 NW 28 G 48 16.09 A Few Clouds FEW045 -3.9 -17.2 35% -11 76.96 1026.4
08 13:52 NW 26 G 46 16.09 A Few Clouds FEW045 FEW250 -4.4 -17.2 36% -11 76.94 1026.2
08 12:52 NW 30 G 46 16.09 A Few Clouds FEW040 FEW250 -5.6 -17.2 -5 -11.7 40% -13 76.96 1026.6
08 11:52 NW 24 G 48 16.09 A Few Clouds FEW040 FEW250 -6.1 -17.2 41% -13 77.04 1027.4
08 10:52 NW 33 G 43 16.09 A Few Clouds and Breezy FEW040 FEW250 -7.2 -18.3 41% -16 77.06 1027.7
08 09:52 NW 26 G 39 16.09 A Few Clouds FEW040 FEW250 -8.3 -18.3 45% -16 77.09 1028.1
08 08:52 NW 19 16.09 A Few Clouds FEW040 FEW250 -9.4 -18.9 46% -16 77.09 1028.4
08 06:52 W 13 16.09 A Few Clouds FEW040 -11.7 -19.4 -9.4 -11.7 53% -18 77.04 1027.5
08 05:52 NW 17 16.09 Fair CLR -11.1 -19.4 51% -18 76.99 1026.9
08 04:52 NW 20 16.09 Fair CLR -11.1 -19.4 51% -19 76.91 1026.0
08 03:52 NW 19 G 31 16.09 Fair CLR -10.6 -19.4 49% -18 76.86 1025.2
08 02:52 NW 22 G 41 16.09 Fair CLR -10.6 -19.4 49% -18 76.84 1024.9
08 01:52 NW 22 G 52 16.09 Fair CLR -10 -18.9 49% -18 76.84 1024.8
08 00:52 NW 35 G 57 16.09 Fair and Breezy CLR -9.4 -18.9 -7.8 -9.4 46% -19 76.78 1024.2
07 23:52 NW 31 G 56 16.09 Fair CLR -9.4 -18.3 49% -18 76.78 1024.0
07 22:52 NW 39 G 56 16.09 A Few Clouds and Breezy FEW050 -8.9 -18.9 45% -19 76.71 1023.3
07 21:52 NW 31 G 48 16.09 A Few Clouds FEW050 -8.3 -19.4 41% -17 76.73 1023.5
07 20:52 NW 26 G 43 16.09 Fair CLR -8.3 -19.4 41% -16 76.68 1022.9
07 19:52 NW 30 G 54 16.09 Fair CLR -8.3 -18.9 43% -17 76.63 1022.2
07 18:52 NW 33 G 61 16.09 A Few Clouds and Breezy FEW055 -7.8 -18.9 -6.1 -7.8 41% -16 76.56 1021.1
07 17:52 NW 44 G 67 16.09 A Few Clouds and Windy FEW060 -7.8 -19.4 39% -18 76.48 1020.1
07 16:52 NW 43 G 65 16.09 A Few Clouds and Windy FEW050 -6.7 -18.9 38% -16 76.43 1019.3
07 15:52 NW 31 G 63 16.09 A Few Clouds FEW050 -6.7 -19.4 36% -15 76.35 1018.4
07 14:52 NW 35 G 67 16.09 Fair and Breezy CLR -6.7 -18.3 40% -15 76.28 1017.4
07 13:52 NW 48 G 72 16.09 A Few Clouds and Windy FEW055 -7.2 -18.3 41% -17 76.23 1016.5
07 12:52 NW 52 G 80 16.09 A Few Clouds and Windy FEW055 -7.2 -19.4 -7.2 -8.3 37% -17 76.2 1016.4
07 11:52 NW 48 G 67 16.09 A Few Clouds and Windy FEW055 -7.8 -18.3 43% -18 76.25 1017.1
07 10:52 NW 39 G 63 16.09 A Few Clouds and Breezy FEW055 -7.8 -19.4 39% -17 76.25 1016.9
07 09:52 NW 41 G 67 16.09 A Few Clouds and Breezy FEW050 -7.8 -18.3 43% -17 76.2 1016.3
07 08:52 NW 44 G 74 16.09 A Few Clouds and Windy FEW050 -7.8 -18.9 41% -18 76.07 1014.7
07 07:52 NW 39 G 65 16.09 A Few Clouds and Breezy FEW055 -8.3 -17.8 47% -18 76 1013.4
07 06:52 NW 46 G 67 16.09 A Few Clouds and Windy FEW055 -7.2 -16.7 0.6 -7.2 47% -17 75.87 1011.8
07 05:52 NW 31 G 54 16.09 A Few Clouds FEW049 -6.1 -16.7 43% -14 75.77 1010.5
07 04:52 NW 43 G 63 16.09 Partly Cloudy and Windy SCT049 -4.4 -14.4 46% -13 75.67 1009.2
07 03:52 NW 44 G 69 16.09 Mostly Cloudy and Windy FEW038 BKN049 -2.2 -11.1 51% -10 75.57 1007.6
07 02:52 NW 31 G 52 14.48 Light Snow SCT028 BKN043 OVC055 -0.6 -4.4 76% -7 75.41 1005.7
07 01:52 W 11 16.09 Overcast BKN060 OVC080 0 -6.1 64% -3 75.36 1005.0
07 00:52 NW 13 G 28 16.09 Mostly Cloudy SCT044 BKN070 BKN120 0.6 -6.1 0.6 -2.8 61% -3 75.39 1005.4
06 23:52 W 20 16.09 Mostly Cloudy FEW043 BKN065 BKN120 0 -5.6 66% -5 75.41 1005.6
06 22:52 W 24 16.09 Overcast FEW040 OVC065 0 -5 69% -5 75.39 1005.2
06 21:52 W 6 16.09 Overcast OVC041 -1.7 -4.4 82% 75.39 1005.3
06 20:52 Calm 16.09 Overcast FEW026 BKN043 OVC065 -2.2 -4.4 85% 75.36 1005.2
06 19:52 SW 6 16.09 Overcast BKN026 OVC047 -2.2 -4.4 85% 75.41 1005.6
06 18:52 S 6 16.09 Overcast FEW012 BKN026 OVC041 -2.2 -3.9 0 -2.8 88% 75.36 1005.1 0.03
06 17:52 S 6 9.66 Fog/Mist FEW008 OVC012 -2.2 -4.4 85% 75.34 1005.0
06 16:52 Calm 4.02 Light Snow Fog/Mist FEW008 SCT012 OVC021 -2.2 -3.9 88% 75.29 1004.3 0.03
06 15:52 S 7 2.41 Light Snow Fog/Mist BKN012 OVC022 -2.8 -4.4 89% -5 75.26 1003.9
06 14:52 SW 15 8.05 Light Snow BKN035 OVC045 -1.7 -7.8 63% -6 75.31 1004.3
06 13:52 SW 15 16.09 Light Snow BKN044 BKN060 OVC110 0 -11.7 41% -4 75.34 1004.6
06 12:52 S 9 16.09 Overcast SCT060 OVC080 -0.6 -11.7 -0.6 -10.6 43% -3 75.39 1005.4
06 11:52 SW 9 16.09 Overcast BKN060 OVC110 -1.7 -11.7 47% -5 75.49 1006.9
06 10:52 S 7 16.09 Overcast FEW030 BKN070 OVC110 -2.2 -11.7 49% -5 75.57 1007.9
06 09:52 Calm 16.09 Overcast FEW030 BKN085 OVC110 -3.9 -11.1 58% 75.59 1008.1
06 08:52 W 6 16.09 Mostly Cloudy BKN110 BKN250 -6.7 -11.1 71% 75.64 1008.9
06 07:52 S 6 16.09 Mostly Cloudy BKN110 -8.9 -11.7 80% 75.69 1009.3
06 06:52 Calm 16.09 Mostly Cloudy BKN110 -10 -12.8 -8.9 -12.8 80% 75.72 1009.9
06 05:52 Calm 16.09 Mostly Cloudy BKN110 -12.2 -13.9 87% 75.79 1010.7
06 04:52 Calm 16.09 Fair CLR -12.8 -13.9 92% 75.82 1011.3
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)