KIAD - Washington/Dulles Intl, VA, US
| Potential Impact | None | Slight | Moderate | High |
| Time | 06/02Z | 06/03Z | 06/04Z | 06/05Z | 06/06Z | 06/07Z | 06/08Z | 06/09Z | 06/10Z | 06/11Z | 06/12Z | 06/13Z | 06/14Z |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp | 74 | 74 | 73 | 72 | 72 | 71 | 71 | 71 | 70 | 70 | 71 | 73 | 73 |
| Dewpt | 65 | 65 | 66 | 66 | 66 | 66 | 66 | 63 | 64 | 65 | 65 | 67 | 66 |
| Altim | 1025.8 | 1026.2 | 1026.5 | 1026.5 | 1026.2 | 1026.2 | 1025.8 | 1026.2 | 1026.5 | 1026.8 | 1026.8 | 1027.9 | 1028.2 |
| VIS | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 9 | 9 | 9 | 10+ |
| CIG | 11000 | 11000 | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 | 10000 |
| Cover | OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC |
| FltCat | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR |
| WX | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| WDir | 160 | 150 | 120 | 130 | 120 | 0 | 120 | 120 | 100 | 100 | 60 | 70 | 80 |
| WSpd | 5 | 4 | 3 | 3 | 3 | 0 | 4 | 3 | 4 | 3 | 5 | 5 | 7 |
| WGst | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
METAR KIAD 060152Z 16005KT 10SM OVC110 23/18 A3029 RMK AO2 SLP255 T02330183
METAR KIAD 060252Z 15004KT 10SM OVC110 23/18 A3030 RMK AO2 SLP259 T02330183 53012
METAR KIAD 060352Z 12003KT 10SM OVC100 23/19 A3031 RMK AO2 SLP260 T02280189
METAR KIAD 060452Z 13003KT 10SM OVC100 22/19 A3031 RMK AO2 SLP261 T02220189 402780172
METAR KIAD 060552Z 12003KT 10SM OVC100 22/19 A3030 RMK AO2 SLP259 T02220189 10244 20222 50000
METAR KIAD 060652Z 00000KT 10SM OVC100 22/19 A3030 RMK AO2 SLP259 T02170189
METAR KIAD 060752Z 12004KT 10SM OVC100 22/19 A3029 RMK AO2 SLP256 T02170189
METAR KIAD 060852Z 12003KT 10SM OVC100 22/17 A3030 RMK AO2 SLP257 T02170172 55002
METAR KIAD 060952Z 10004KT 10SM OVC100 21/18 A3031 RMK AO2 SLP261 T02110178
METAR KIAD 061052Z 10003KT 9SM OVC100 21/18 A3032 RMK AO2 SLP266 T02110183
METAR KIAD 061152Z 06005KT 9SM BKN100 OVC160 22/18 A3032 RMK AO2 SLP266 T02170183 10222 20206 50008
METAR KIAD 061252Z 07005KT 9SM BKN100 OVC150 23/19 A3035 RMK AO2 SLP274 T02280194
METAR KIAD 061352Z 08007KT 10SM FEW045 BKN100 OVC170 23/19 A3036 RMK AO2 SLP278 T02280189