| 10:53 PST |  Partly Cloudy | -3°C / 27°F | -22°C / -8°F | 22% | 1020 mb (30.12 in) | SE 13 kph (SE 8.1 mph) | - | 10SM |
| | KSEA 071853Z 12007KT 10SM FEW050 M03/M22 A3012 RMK AO2 SLP210 T10281217 |
| 09:53 PST |  Partly Cloudy | -3°C / 27°F | -21°C / -6°F | 24% | 1020 mb (30.12 in) | E 19 kph (E 11.5 mph) | - | 10SM |
| | KSEA 071753Z 09010KT 10SM FEW050 M03/M21 A3013 RMK AO2 SLP213 T10331211 11033 21050 51004 |
| 08:53 PST |  Partly Cloudy | -4°C / 25°F | -21°C / -6°F | 26% | 1020 mb (30.12 in) | E 19 kph (E 11.5 mph) | - | 10SM |
| | KSEA 071653Z 09010KT 10SM FEW050 M04/M21 A3012 RMK AO2 SLP211 T10441206 |
| 07:53 PST |  Partly Cloudy | -5°C / 23°F | -20°C / -4°F | 30% | 1020 mb (30.12 in) | ESE 13 kph (ESE 8.1 mph) | - | 10SM |
| | KSEA 071553Z 11007KT 10SM FEW050 M05/M20 A3012 RMK AO2 SLP212 T10501200 |
| 06:53 PST |  Clear | -4°C / 25°F | -20°C / -4°F | 28% | 1020 mb (30.12 in) | E 13 kph (E 8.1 mph) | - | 10SM |
| | KSEA 071453Z 10007KT 10SM CLR M04/M20 A3012 RMK AO2 SLP209 T10441200 50000 |
| 05:53 PST |  Clear | -4°C / 25°F | -20°C / -4°F | 28% | 1020 mb (30.12 in) | E 15 kph (E 9.2 mph) | - | 10SM |
| | KSEA 071353Z 09008KT 10SM CLR M04/M20 A3012 RMK AO2 SLP211 T10441200 |
| 04:53 PST |  Clear | -4°C / 25°F | -20°C / -4°F | 28% | 1020 mb (30.12 in) | ESE 20 kph (ESE 12.7 mph) | - | 10SM |
| | KSEA 071253Z 11011KT 10SM CLR M04/M20 A3012 RMK AO2 SLP210 T10441200 |
| 03:53 PST |  Clear | -4°C / 25°F | -19°C / -2°F | 30% | 1020 mb (30.12 in) | ESE 15 kph (ESE 9.2 mph) | - | 10SM |
| | KSEA 071153Z 11008KT 10SM CLR M04/M19 A3012 RMK AO2 SLP209 T10441194 11017 21044 50000 |
| 02:53 PST |  Clear | -4°C / 25°F | -19°C / -2°F | 30% | 1020 mb (30.12 in) | ESE 15 kph (ESE 9.2 mph) | - | 10SM |
| | KSEA 071053Z 11008KT 10SM CLR M04/M19 A3012 RMK AO2 SLP211 T10391194 |
| 01:53 PST |  Clear | -3°C / 27°F | -19°C / -2°F | 28% | 1020 mb (30.12 in) | E 19 kph (E 11.5 mph) | - | 10SM |
| | KSEA 070953Z 10010KT 10SM CLR M03/M19 A3012 RMK AO2 SLP210 T10331194 |
| 00:53 PST |  Clear | -3°C / 27°F | -19°C / -2°F | 28% | 1020 mb (30.12 in) | SE 22 kph (SE 13.8 mph) | - | 10SM |
| | KSEA 070853Z 12012KT 10SM CLR M03/M19 A3012 RMK AO2 SLP209 T10331194 58002 |