KIAD - Washington/Dulles Intl, VA, US
| Potential Impact | None | Slight | Moderate | High |
| Time | 13/11Z | 13/12Z | 13/13Z | 13/14Z | 13/15Z | 13/16Z | 13/17Z | 13/18Z | 13/19Z | 13/20Z | 13/21Z | 13/22Z | 13/23Z |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp | 52 | 53 | 60 | 68 | 73 | 77 | 80 | 82 | 83 | 83 | 82 | 79 | 76 |
| Dewpt | 52 | 53 | 58 | 60 | 58 | 58 | 59 | 59 | 60 | 59 | 59 | 61 | 61 |
| Altim | 1016 | 1016.7 | 1016.7 | 1016.7 | 1016.3 | 1016 | 1015.7 | 1014.6 | 1014 | 1013.3 | 1013.3 | 1013.6 | 1013.3 |
| VIS | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ |
| CIG | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cover | FEW | FEW | FEW | FEW | FEW | FEW | CLR | FEW | FEW | FEW | CLR | FEW | FEW |
| FltCat | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR |
| WX | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| WDir | 0 | 0 | 210 | VRB | 180 | 210 | 200 | 190 | 200 | 200 | 200 | 200 | 180 |
| WSpd | 0 | 0 | 3 | 5 | 8 | 8 | 10 | 11 | 10 | 11 | 10 | 8 | 7 |
| WGst | -- | -- | -- | -- | -- | -- | -- | 16 | -- | -- | 17 | -- | -- |
METAR KIAD 131052Z 00000KT 10SM FEW250 11/11 A3000 RMK AO2 SLP159 T01110111
METAR KIAD 131152Z 00000KT 10SM FEW250 12/12 A3002 RMK AO2 SLP163 T01170117 10133 20111 51013
METAR KIAD 131252Z 21003KT 10SM FEW250 16/14 A3002 RMK AO2 SLP166 T01560144
METAR KIAD 131352Z VRB05KT 10SM FEW250 20/16 A3002 RMK AO2 SLP165 T02000156
METAR KIAD 131452Z 18008KT 10SM FEW250 23/14 A3001 RMK AO2 SLP161 T02280144 58001
METAR KIAD 131552Z 21008KT 10SM FEW250 25/14 A3000 RMK AO2 SLP159 T02500144
METAR KIAD 131652Z 20010KT 10SM CLR 27/15 A2999 RMK AO2 SLP153 T02670150
METAR KIAD 131752Z 19011G16KT 10SM FEW250 28/15 A2996 RMK AO2 SLP144 T02780150 10283 20117 58017
METAR KIAD 131852Z 20010KT 10SM FEW250 28/16 A2994 RMK AO2 SLP137 T02830156
METAR KIAD 131952Z 20011KT 10SM FEW250 28/15 A2992 RMK AO2 SLP131 T02830150
METAR KIAD 132052Z 20010G17KT 10SM CLR 28/15 A2992 RMK AO2 SLP131 T02780150 56013
METAR KIAD 132152Z 20008KT 10SM FEW100 26/16 A2993 RMK AO2 SLP132 T02610161
METAR KIAD 132252Z 18007KT 10SM FEW110 24/16 A2992 RMK AO2 SLP130 T02440161