| 04:53 PST |  Overcast | 8°C / 46°F | 6°C / 43°F | 87% | 1014 mb (29.94 in) | NW 17 kph (NW 10.4 mph) | - | 10SM |
| | KSPB 271253Z AUTO 32009G16KT 280V350 10SM BKN050 OVC060 08/06 A2995 RMK AO2 SLP143 T00830056 |
| 03:53 PST |  Overcast | 8°C / 46°F | 6°C / 43°F | 87% | 1014 mb (29.94 in) | NNW 15 kph (NNW 9.2 mph) | 0.00 mm (0.00 in) | 10SM |
| | KSPB 271153Z AUTO 33008G16KT 10SM SCT035 BKN044 OVC065 08/06 A2993 RMK AO2 RAE00 SLP133 P0000 60009 70107 T00780061 10089 20078 53014 |
| 03:21 PST |  Overcast | 8°C / 46°F | 6°C / 43°F | 87% | 1013 mb (29.91 in) | NW 15 kph (NW 9.2 mph) | 0.00 mm (0.00 in) | 10SM |
| | KSPB 271121Z AUTO 32008G15KT 10SM OVC033 08/06 A2992 RMK AO2 RAE00 P0000 |
| 02:53 PST |  Overcast Light Rain | 8°C / 46°F | 6°C / 43°F | 87% | 1013 mb (29.91 in) | NW 15 kph (NW 9.2 mph) | 0.00 mm (0.00 in) | 10SM |
| | KSPB 271053Z AUTO 32008KT 10SM -RA OVC027 08/06 A2991 RMK AO2 RAE19B38 SLP129 P0000 T00780061 |
| 01:53 PST |  Overcast Light Rain | 8°C / 46°F | 7°C / 45°F | 93% | 1012 mb (29.88 in) | NW 11 kph (NW 6.9 mph) | 0.76 mm (0.03 in) | 5SM |
| | KSPB 270953Z AUTO 32006KT 5SM -RA BR BKN021 OVC028 08/07 A2989 RMK AO2 SLP122 P0003 T00780067 |
| 01:15 PST |  Overcast Light Rain | 8°C / 46°F | 7°C / 45°F | 93% | 1012 mb (29.88 in) | NNW 11 kph (NNW 6.9 mph) | 0.25 mm (0.01 in) | 6SM |
| | KSPB 270915Z AUTO 33006KT 6SM -RA BR SCT011 OVC017 08/07 A2989 RMK AO2 P0001 |
| 00:53 PST |  Overcast Light Rain | 8°C / 46°F | 8°C / 46°F | 100% | 1012 mb (29.88 in) | NW 7 kph (NW 4.6 mph) | 0.51 mm (0.02 in) | 5SM |
| | KSPB 270853Z AUTO 32004KT 5SM -RA BR OVC013 08/08 A2989 RMK AO2 SLP120 P0002 60006 T00780078 53007 |
| 00:33 PST |  Overcast Light Rain | 8°C / 46°F | 8°C / 46°F | 100% | 1012 mb (29.88 in) | Calm | 0.25 mm (0.01 in) | 6SM |
| | KSPB 270833Z AUTO 00000KT 6SM -RA BR FEW010 OVC015 08/08 A2988 RMK AO2 P0001 |
| 00:15 PST |  Overcast Light Rain | 8°C / 46°F | 8°C / 46°F | 100% | 1012 mb (29.88 in) | NW 9 kph (NW 5.8 mph) | 0.25 mm (0.01 in) | 6SM |
| | KSPB 270815Z AUTO 31005KT 6SM -RA BR FEW008 OVC013 08/08 A2987 RMK AO2 P0001 |