KDCA - Washington/Reagan-National Arpt, VA, US
| Potential Impact | None | Slight | Moderate | High |
| Time | 10/09Z | 10/10Z | 10/11Z | 10/12Z | 10/13Z | 10/14Z | 10/15Z | 10/16Z | 10/17Z | 10/18Z | 10/19Z | 10/20Z | 10/21Z |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp | 72 | 72 | 74 | 71 | 72 | 74 | 78 | 83 | 85 | 89 | 88 | 76 | |
| Dewpt | 63 | 64 | 65 | 67 | 69 | 70 | 71 | 72 | 72 | 72 | 73 | 71 | |
| Altim | 1015 | 1015 | 1015.3 | 1015.3 | 1015 | 1014.6 | 1014 | 1013 | 1012.3 | 1011.3 | 1010.9 | 1010.6 | |
| VIS | 10+ | 10+ | 10+ | 4 | 9 | 9 | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | |
| CIG | 14000 | 14000 | 8000 | 9500 | 9000 | 900 | 1100 | 25000 | 25000 | 25000 | 8000 | 9000 | |
| Cover | OVC | OVC | OVC | BKN | OVC | OVC | OVC | BKN | BKN | BKN | BKN | OVC | |
| FltCat | VFR | VFR | VFR | MVFR | VFR | IFR | MVFR | VFR | VFR | VFR | VFR | VFR | |
| WX | -- | -- | -- | RA BR | -RA | -- | -- | -- | -- | -- | -- | -RA | |
| WDir | 200 | 200 | 210 | 210 | 190 | 200 | 210 | 230 | 180 | 220 | 180 | 320 | |
| WSpd | 9 | 9 | 7 | 9 | 9 | 9 | 10 | 9 | 11 | 8 | 12 | 7 | |
| WGst | -- | -- | -- | -- | -- | -- | -- | -- | 20 | 21 | -- | -- |
METAR KDCA 100852Z 20009KT 10SM FEW090 BKN140 OVC250 22/17 A2997 RMK AO2 SLP147 T02220172 58019
METAR KDCA 100952Z 20009KT 10SM FEW090 BKN140 OVC250 22/18 A2997 RMK AO2 SLP149 T02220178
METAR KDCA 101052Z 21007KT 10SM BKN080 BKN140 OVC250 23/18 A2998 RMK AO2 SLP150 T02330183
METAR KDCA 101152Z 21009KT 4SM RA BR SCT017 BKN095 BKN110 22/19 A2998 RMK AO2 RAB08 SLP150 P0004 60004 70004 T02170194 10233 20217 51004
METAR KDCA 101252Z 19009KT 9SM -RA FEW009 SCT055 OVC090 22/21 A2997 RMK AO2 SLP148 P0003 T02220206
METAR KDCA 101352Z 20009KT 9SM BKN009 OVC060 23/21 A2996 RMK AO2 RAE13 SLP144 P0000 T02330211
METAR KDCA 101452Z 21010KT 10SM BKN011 BKN120 OVC250 26/22 A2994 RMK AO2 SLP137 60003 T02560217 58014
METAR KDCA 101552Z 23009KT 10SM FEW020 FEW150 BKN250 28/22 A2991 RMK AO2 SLP128 T02830222
METAR KDCA 101652Z 18011G20KT 10SM FEW024 BKN250 29/22 A2989 RMK AO2 SLP122 T02940222
METAR KDCA 101752Z 22008G21KT 10SM SCT035 BKN250 32/22 A2986 RMK AO2 SLP112 60003 T03170222 10317 20217 58024
METAR KDCA 101852Z 18012KT 10SM SCT040 BKN080 BKN250 31/23 A2985 RMK AO2 SLP107 CB DSNT W-N MOV E T03110228
METAR KDCA 102052Z 32007KT 10SM -RA SCT036CB BKN090 OVC100 24/22 A2984 RMK AO2 PK WND 30030/2020 WSHFT 2011 RAB1959 SLP105 CB SE MOV E P0002 60002 T02440217 55007