| 06:53 PST |  Clear | -4°C / 25°F | -6°C / 21°F | 86% | 1019 mb (30.09 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KSPB 261453Z AUTO 25004KT 10SM CLR M04/M06 A3008 RMK AO2 SLP186 T10441056 55002 |
| 05:53 PST |  Clear | -4°C / 25°F | -6°C / 21°F | 86% | 1019 mb (30.09 in) | W 7 kph (W 4.6 mph) | - | 10SM |
| | KSPB 261353Z AUTO 27004KT 10SM CLR M04/M06 A3008 RMK AO2 SLP186 T10441056 |
| 04:53 PST |  Clear | -4°C / 25°F | -6°C / 21°F | 86% | 1018 mb (30.06 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KSPB 261253Z AUTO 27003KT 10SM CLR M04/M06 A3007 RMK AO2 SLP185 T10441056 |
| 03:53 PST |  Clear | -4°C / 25°F | -5°C / 23°F | 93% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KSPB 261153Z AUTO 00000KT 10SM CLR M04/M05 A3009 RMK AO2 SLP188 T10391050 11022 21044 58004 |
| 02:53 PST |  Clear | -4°C / 25°F | -4°C / 25°F | 100% | 1019 mb (30.09 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KSPB 261053Z AUTO 26004KT 10SM CLR M04/M04 A3009 RMK AO2 SLP190 T10391044 |
| 01:53 PST |  Clear | -4°C / 25°F | -5°C / 23°F | 93% | 1019 mb (30.09 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KSPB 260953Z AUTO 28003KT 10SM CLR M04/M05 A3009 RMK AO2 SLP189 T10391050 |
| 00:53 PST |  Clear | -3°C / 27°F | -4°C / 25°F | 93% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KSPB 260853Z AUTO 00000KT 10SM CLR M03/M04 A3010 RMK AO2 SLP191 T10331039 58007 |