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.
30 21:52 NW 11 16.09 Fair CLR 11.1 1.7 53% 76.05 1013.9
30 20:52 NW 15 G 30 16.09 A Few Clouds FEW050 12.2 1.1 47% 76.02 1013.2
30 19:52 NW 24 G 46 16.09 A Few Clouds FEW050 FEW250 13.3 2.2 20.6 13.3 47% 75.92 1012.2
30 18:52 NW 31 G 50 16.09 A Few Clouds FEW060 FEW075 FEW250 15.6 3.9 46% 75.84 1010.9
30 17:52 NW 28 G 52 16.09 A Few Clouds FEW080 17.2 3.3 40% 75.74 1009.8
30 16:52 NW 31 G 50 16.09 Partly Cloudy SCT080 SCT250 17.8 1.7 34% 75.69 1009.2
30 15:52 NW 24 G 48 16.09 Partly Cloudy SCT075 20 1.7 30% 75.67 1008.5
30 14:52 NW 26 G 50 16.09 Partly Cloudy SCT070 19.4 2.2 32% 75.64 1008.3
30 13:52 W 30 G 43 16.09 Partly Cloudy SCT060 19.4 3.9 20 13.3 36% 75.64 1008.4
30 12:52 NW 28 G 43 16.09 Mostly Cloudy BKN065 18.9 4.4 39% 75.69 1008.8
30 11:52 W 26 G 44 16.09 Mostly Cloudy BKN060 17.8 3.9 40% 75.74 1009.5
30 10:52 W 35 G 48 16.09 Mostly Cloudy and Breezy SCT050 BKN230 17.2 5 45% 75.74 1009.8
30 09:52 NW 19 G 33 16.09 Partly Cloudy FEW030 SCT130 SCT240 16.7 7.2 54% 75.77 1010.1
30 08:52 NW 15 16.09 Partly Cloudy FEW030 SCT100 SCT220 15 8.3 64% 75.74 1009.5
30 07:52 NW 13 16.09 Mostly Cloudy FEW030 SCT130 BKN250 13.3 8.9 15 10 75% 75.69 1009.2
30 06:52 W 13 16.09 Mostly Cloudy BKN200 11.7 8.9 83% 75.69 1008.8
30 05:52 N 7 16.09 Mostly Cloudy BKN240 11.1 8.9 86% 75.62 1008.0
30 04:52 Vrbl 6 16.09 Mostly Cloudy FEW120 BKN250 12.2 10 87% 75.62 1008.1
30 03:52 NW 11 16.09 Partly Cloudy SCT230 13.9 11.1 83% 75.57 1007.4
30 02:52 Calm 16.09 Mostly Cloudy FEW004 SCT021 BKN230 14.4 12.2 87% 75.54 1007.1
30 01:52 Calm 11.27 Mostly Cloudy SCT004 BKN021 BKN230 12.8 12.2 15 11.7 96% 75.57 1007.2 0.25
30 00:52 Calm 14.48 Overcast OVC005 12.8 12.2 96% 75.59 1007.6
29 23:52 Calm 16.09 Overcast BKN009 BKN016 OVC030 13.3 12.8 97% 75.57 1007.3
29 22:52 Calm 11.27 Overcast OVC007 13.9 13.3 96% 75.59 1007.6 0.15 0.25
29 21:52 W 9 11.27 Light Rain BKN009 OVC015 13.9 13.3 96% 75.62 1008.1 0.1
29 20:52 SE 19 16.09 Overcast FEW009 OVC018 14.4 13.9 97% 75.54 1007.1
29 19:52 SE 11 11.27 Overcast BKN018 OVC022 15 13.9 15 14.4 93% 75.54 1006.9 1.07
29 18:52 SE 9 3.22 Light Rain Fog/Mist SCT014 BKN024 OVC030 15 13.9 93% 75.57 1007.3 0.25
29 17:52 SW 6 3.22 Rain Fog/Mist BKN019 OVC027 14.4 13.9 97% 75.64 1008.3 0.64
29 16:52 S 7 8.05 Light Rain Fog/Mist BKN022 OVC044 14.4 13.3 93% 75.64 1008.2 0.08 0.18
29 15:52 S 15 11.27 Light Rain SCT016 BKN032 OVC095 15 12.8 87% 75.67 1008.7 0.03
29 14:52 S 15 9.66 Rain Fog/Mist OVC015 14.4 12.8 90% 75.77 1010.0 0.08
29 13:52 S 11 9.66 Fog/Mist OVC013 14.4 12.2 15.6 12.8 87% 75.9 1011.7
29 12:52 S 11 16.09 Overcast OVC015 15 11.7 81% 75.95 1012.5
29 11:52 S 17 16.09 Overcast OVC017 15 10 72% 76 1013.0
29 10:52 S 9 16.09 Overcast OVC018 14.4 8.9 70% 76.05 1013.9
29 09:52 S 11 16.09 Overcast OVC017 13.3 8.9 75% 76.1 1014.4
29 08:52 SE 9 16.09 Overcast OVC016 13.3 8.9 75% 76.07 1013.9
29 07:52 SE 7 16.09 Overcast OVC017 12.8 8.3 14.4 12.8 74% 76.07 1014.0
29 06:52 S 7 16.09 Overcast OVC018 12.8 7.8 72% 76.1 1014.4
29 05:52 SE 11 16.09 Overcast OVC018 12.8 7.8 72% 76.1 1014.3
29 04:52 SE 11 16.09 Overcast OVC019 12.8 8.9 77% 76.1 1014.3
29 03:52 SE 13 16.09 Overcast OVC019 13.3 9.4 77% 76.07 1014.2
29 02:52 E 7 16.09 Overcast OVC021 13.3 10 81% 76.1 1014.6
29 01:52 SE 11 16.09 Overcast OVC023 14.4 10.6 16.1 14.4 78% 76.17 1015.5
29 00:52 SE 6 16.09 Overcast OVC024 15 11.7 81% 76.25 1016.5
28 23:52 S 6 16.09 Overcast OVC026 15.6 11.7 78% 76.28 1016.7
28 22:52 Calm 16.09 Overcast OVC027 15.6 11.7 78% 76.3 1017.1
28 21:52 Calm 16.09 Overcast OVC026 15 11.7 81% 76.33 1017.3
28 20:52 S 7 16.09 Overcast OVC025 15.6 11.1 75% 76.2 1015.9
28 19:52 S 9 16.09 Overcast OVC025 16.1 11.1 17.2 15 72% 76.23 1016.2
28 18:52 SW 15 16.09 Overcast OVC026 16.7 11.1 70% 76.28 1016.7
28 17:52 S 17 16.09 Overcast OVC030 16.7 10.6 67% 76.28 1016.7
28 16:52 SW 17 16.09 Overcast OVC032 16.7 10.6 67% 76.28 1016.8
28 15:52 S 13 G 28 16.09 Overcast OVC034 17.2 9.4 60% 76.3 1017.1
28 14:52 S 17 16.09 Overcast BKN035 OVC070 16.7 8.3 58% 76.35 1017.7
28 13:52 SE 17 16.09 Overcast BKN038 OVC070 15 8.3 15 10.6 64% 76.38 1018.3
28 12:52 SE 20 G 28 16.09 Overcast OVC060 13.3 7.8 70% 76.43 1018.9
28 11:52 SE 13 16.09 Overcast OVC070 11.7 7.2 74% 76.53 1020.3
28 10:52 S 17 16.09 Overcast BKN041 OVC070 11.1 7.2 77% 76.61 1021.1
28 09:52 S 11 16.09 Light Rain BKN065 OVC120 10.6 6.7 77% 76.61 1021.2
28 08:52 S 20 G 35 16.09 Overcast BKN095 OVC200 11.7 4.4 61% 76.58 1020.9
28 07:52 S 13 16.09 Overcast OVC120 11.1 5 11.1 9.4 66% 76.66 1021.7
28 06:52 S 13 16.09 Mostly Cloudy BKN170 10 5 71% 8 76.58 1021.0
28 05:52 S 13 16.09 Mostly Cloudy BKN210 9.4 5.6 77% 8 76.63 1021.4
28 04:52 S 9 16.09 Overcast OVC240 10 5.6 74% 9 76.66 1021.9
28 03:52 S 13 16.09 Mostly Cloudy FEW120 BKN200 10.6 5.6 71% 76.68 1022.2
28 02:52 S 13 16.09 A Few Clouds FEW120 10 6.1 77% 8 76.71 1022.5
28 01:52 S 13 16.09 A Few Clouds FEW250 11.1 6.1 17.2 11.1 72% 76.71 1022.7
28 00:52 S 13 16.09 A Few Clouds FEW250 11.7 6.7 72% 76.73 1022.8
27 23:52 S 9 16.09 Partly Cloudy SCT250 12.8 5.6 62% 76.76 1023.1
27 22:52 S 11 16.09 Partly Cloudy SCT250 13.9 5.6 58% 76.73 1023.0
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)