| 06:53 PST |  Overcast Light Rain | 8°C / 46°F | 6°C / 43°F | 87% | 1017 mb (30.03 in) | NNW 11 kph (NNW 6.9 mph) | 0.25 mm (0.01 in) | 10SM |
| | KUAO 271453Z AUTO 33006G15KT 10SM -RA OVC050 08/06 A3003 RMK AO2 RAE1355B30 SLP169 P0001 60007 T00780061 53036 |
| 05:53 PST |  Overcast Light Rain | 8°C / 46°F | 6°C / 43°F | 87% | 1015 mb (29.97 in) | N 15 kph (N 9.2 mph) | 1.52 mm (0.06 in) | 10SM |
| | KUAO 271353Z AUTO 35008KT 10SM -RA SCT023 OVC036 08/06 A2998 RMK AO2 SLP154 P0006 T00780061 |
| 05:40 PST |  Overcast Rain | 8°C / 46°F | 6°C / 43°F | 87% | 1015 mb (29.97 in) | N 13 kph (N 8.1 mph) | 1.27 mm (0.05 in) | 8SM |
| | KUAO 271340Z AUTO 36007KT 8SM RA SCT023 BKN030 OVC037 08/06 A2998 RMK AO2 P0005 |
| 04:53 PST |  Overcast Light Rain | 8°C / 46°F | 7°C / 45°F | 93% | 1014 mb (29.94 in) | N 13 kph (N 8.1 mph) | 0.00 mm (0.00 in) | 10SM |
| | KUAO 271253Z AUTO 36007KT 10SM -RA OVC023 08/07 A2995 RMK AO2 RAB50 SLP142 P0000 T00780067 |
| 04:36 PST |  Overcast | 8°C / 46°F | 7°C / 45°F | 93% | 1014 mb (29.94 in) | N 22 kph (N 13.8 mph) | - | 10SM |
| | KUAO 271236Z AUTO 35012KT 10SM SCT011 OVC018 08/07 A2994 RMK AO2 |
| 04:09 PST |  Overcast | 9°C / 48°F | 7°C / 45°F | 87% | 1014 mb (29.94 in) | N 19 kph (N 11.5 mph) | - | 10SM |
| | KUAO 271209Z AUTO 35010G14KT 10SM BKN011 BKN022 OVC031 09/07 A2993 RMK AO2 |
| 03:55 PST |  Overcast | 10°C / 50°F | 9°C / 48°F | 94% | 1013 mb (29.91 in) | NW 13 kph (NW 8.1 mph) | - | 10SM |
| | KUAO 271155Z AUTO 32007KT 10SM FEW008 BKN028 OVC033 10/09 A2992 RMK AO2 |
| 03:53 PST |  Overcast | 10°C / 50°F | 9°C / 48°F | 94% | 1013 mb (29.91 in) | NW 7 kph (NW 4.6 mph) | 0.25 mm (0.01 in) | 10SM |
| | KUAO 271153Z AUTO 31004KT 10SM FEW015 SCT024 OVC030 10/09 A2992 RMK AO2 RAE38 SLP133 P0001 60003 70069 T01000089 10111 20094 53015 |
| 03:44 PST |  Overcast | 10°C / 50°F | 9°C / 48°F | 94% | 1013 mb (29.91 in) | W 6 kph (W 3.5 mph) | 0.25 mm (0.01 in) | 10SM |
| | KUAO 271144Z AUTO 28003KT 10SM FEW007 SCT019 OVC030 10/09 A2992 RMK AO2 RAE38 P0001 |
| 03:21 PST |  Overcast Light Rain | 10°C / 50°F | 9°C / 48°F | 94% | 1013 mb (29.91 in) | SW 7 kph (SW 4.6 mph) | 0.00 mm (0.00 in) | 9SM |
| | KUAO 271121Z AUTO 22004KT 9SM -RA FEW007 OVC015 10/09 A2991 RMK AO2 P0000 |
| 03:08 PST |  Overcast Light Rain | 10°C / 50°F | 9°C / 48°F | 94% | 1013 mb (29.91 in) | SSE 7 kph (SSE 4.6 mph) | 0.00 mm (0.00 in) | 10SM |
| | KUAO 271108Z AUTO 20004KT 10SM -RA OVC015 10/09 A2990 RMK AO2 P0000 |
| 02:53 PST |  Overcast Light Rain | 11°C / 52°F | 9°C / 48°F | 88% | 1013 mb (29.91 in) | S 9 kph (S 5.8 mph) | 0.25 mm (0.01 in) | 10SM |
| | KUAO 271053Z AUTO 19005KT 10SM -RA BKN013 BKN019 OVC035 11/09 A2990 RMK AO2 RAE22B44 SLP125 P0001 T01060094 |
| 02:41 PST |  Overcast | 11°C / 52°F | 9°C / 48°F | 88% | 1013 mb (29.91 in) | SSE 11 kph (SSE 6.9 mph) | 0.25 mm (0.01 in) | 10SM |
| | KUAO 271041Z AUTO 20006KT 10SM FEW009 BKN017 OVC046 11/09 A2990 RMK AO2 RAE22 P0001 |
| 02:32 PST |  Overcast | 11°C / 52°F | 9°C / 48°F | 88% | 1013 mb (29.91 in) | SW 9 kph (SW 5.8 mph) | 0.25 mm (0.01 in) | 10SM |
| | KUAO 271032Z AUTO 21005KT 10SM SCT016 BKN031 OVC041 11/09 A2990 RMK AO2 RAE22 P0001 |
| 02:15 PST |  Overcast Light Rain | 11°C / 52°F | 9°C / 48°F | 88% | 1012 mb (29.88 in) | SW 6 kph (SW 3.5 mph) | 0.25 mm (0.01 in) | 10SM |
| | KUAO 271015Z AUTO 21003KT 10SM -RA SCT009 BKN019 OVC027 11/09 A2989 RMK AO2 P0001 |
| 01:53 PST |  Overcast Light Rain | 10°C / 50°F | 9°C / 48°F | 94% | 1012 mb (29.88 in) | SSW 6 kph (SSW 3.5 mph) | 0.00 mm (0.00 in) | 10SM |
| | KUAO 270953Z AUTO 24003KT 10SM -RA BKN009 BKN015 OVC100 10/09 A2988 RMK AO2 RAB49 SLP119 P0000 T01000094 |
| 01:42 PST |  Overcast | 10°C / 50°F | 9°C / 48°F | 94% | 1011 mb (29.85 in) | Calm | - | 10SM |
| | KUAO 270942Z AUTO 00000KT 10SM SCT009 SCT015 OVC100 10/09 A2986 RMK AO2 |
| 00:53 PST |  Overcast | 11°C / 52°F | 9°C / 48°F | 88% | 1012 mb (29.88 in) | SW 11 kph (SW 6.9 mph) | - | 10SM |
| | KUAO 270853Z AUTO 21006G17KT 10SM SCT090 OVC110 11/09 A2988 RMK AO2 SLP118 60001 T01060094 53006 |