| 13:56 PST |  Overcast | 3°C / 37°F | -1°C / 30°F | 75% | 1018 mb (30.06 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KLWS 222156Z 15003KT 10SM OVC055 03/M01 A3005 RMK AO2 SLP185 T00281006 |
| 13:03 PST |  Overcast | 2°C / 36°F | -1°C / 30°F | 81% | 1017 mb (30.03 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KLWS 222103Z 19004KT 10SM OVC049 02/M01 A3003 RMK AO2 |
| 12:56 PST |  Mostly Cloudy | 2°C / 36°F | 0°C / 32°F | 87% | 1017 mb (30.03 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KLWS 222056Z 19005KT 10SM BKN010 02/00 A3003 RMK AO2 SLP180 T00220000 53019 |
| 12:17 PST |  Mostly Cloudy | 2°C / 36°F | -1°C / 30°F | 81% | 1016 mb (30 in) | Calm | - | 10SM |
| | KLWS 222017Z 00000KT 10SM BKN010 02/M01 A3001 RMK AO2 |
| 12:03 PST |  Overcast | 2°C / 36°F | -1°C / 30°F | 81% | 1016 mb (30 in) | Calm | - | 10SM |
| | KLWS 222003Z 00000KT 10SM OVC001 02/M01 A3001 RMK AO2 |
| 11:56 PST |  Overcast | 2°C / 36°F | -1°C / 30°F | 81% | 1016 mb (30 in) | Calm | - | 10SM |
| | KLWS 221956Z 00000KT 10SM OVC010 02/M01 A3001 RMK AO2 SLP172 T00221006 |
| 10:56 PST |  Mostly Cloudy | 2°C / 36°F | 0°C / 32°F | 87% | 1016 mb (30 in) | NW 6 kph (NW 3.5 mph) | - | 10SM |
| | KLWS 221856Z 31003KT 10SM BKN011 02/00 A2999 RMK AO2 SLP167 T00170000 |
| 10:38 PST |  Mostly Cloudy | 1°C / 34°F | 0°C / 32°F | 93% | 1015 mb (29.97 in) | WNW 6 kph (WNW 3.5 mph) | - | 10SM |
| | KLWS 221838Z 29003KT 10SM BKN011 01/00 A2998 RMK AO2 |
| 10:03 PST |  Overcast | 1°C / 34°F | 0°C / 32°F | 93% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KLWS 221803Z 00000KT 10SM OVC001 01/00 A2998 RMK AO2 |
| 09:56 PST |  Mostly Cloudy | 1°C / 34°F | 0°C / 32°F | 93% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KLWS 221756Z 00000KT 10SM SCT001 BKN035 01/00 A2997 RMK AO2 SLP160 60000 T00110000 10017 20006 53022 |
| 09:40 PST |  Mostly Cloudy | 2°C / 36°F | 0°C / 32°F | 87% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KLWS 221740Z 00000KT 10SM SCT001 BKN035 02/00 A2997 RMK AO2 |
| 09:28 PST |  Mostly Cloudy | 1°C / 34°F | 0°C / 32°F | 93% | 1015 mb (29.97 in) | Calm | - | 7SM |
| | KLWS 221728Z 00000KT 7SM BKN001 BKN035 01/00 A2996 RMK AO2 |
| 08:56 PST |  Partly Cloudy | 1°C / 34°F | -1°C / 30°F | 87% | 1014 mb (29.94 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KLWS 221656Z 35004KT 10SM SCT005 01/M01 A2995 RMK AO2 SLP150 T00061006 |
| 08:48 PST |  Partly Cloudy | 1°C / 34°F | -1°C / 30°F | 87% | 1014 mb (29.94 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KLWS 221648Z 36003KT 10SM SCT005 01/M01 A2994 RMK AO2 |
| 08:40 PST |  Mostly Cloudy | 1°C / 34°F | -1°C / 30°F | 87% | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KLWS 221640Z 00000KT 10SM FEW001 BKN005 BKN048 01/M01 A2994 RMK AO2 |
| 08:32 PST |  Mostly Cloudy | 1°C / 34°F | -1°C / 30°F | 87% | 1014 mb (29.94 in) | Calm | - | 9SM |
| | KLWS 221632Z 00000KT 9SM FEW001 SCT005 BKN050 01/M01 A2994 RMK AO2 |
| 07:56 PST |  Overcast | 1°C / 34°F | -1°C / 30°F | 87% | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KLWS 221556Z 00000KT 10SM BKN070 OVC080 01/M01 A2993 RMK AO2 SLP144 T00061011 |
| 07:12 PST |  Overcast | 1°C / 34°F | -1°C / 30°F | 87% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KLWS 221512Z 00000KT 10SM FEW001 OVC070 01/M01 A2991 RMK AO2 |
| 06:56 PST |  Overcast | 1°C / 34°F | -1°C / 30°F | 87% | 1013 mb (29.91 in) | Calm | 0.00 mm (0.00 in) | 9SM |
| | KLWS 221456Z 00000KT 9SM OVC043 01/M01 A2990 RMK AO2 SNB34E53 SLP136 P0000 60000 T00061011 53017 |
| 05:56 PST |  Overcast | 1°C / 34°F | -1°C / 30°F | 87% | 1012 mb (29.88 in) | Calm | 0.00 mm (0.00 in) | 9SM |
| | KLWS 221356Z AUTO 00000KT 9SM OVC055 01/M01 A2988 RMK AO2 SNB43E54 SLP129 P0000 T00061011 |
| 04:56 PST |  Overcast | 1°C / 34°F | -1°C / 30°F | 87% | 1012 mb (29.88 in) | Calm | 0.00 mm (0.00 in) | 10SM |
| | KLWS 221256Z AUTO 00000KT 10SM FEW002 OVC060 01/M01 A2987 RMK AO2 SNE38 SLP124 P0000 T00111011 |
| 04:31 PST |  Overcast Light Snow | 1°C / 34°F | -1°C / 30°F | 87% | 1011 mb (29.85 in) | NNW 9 kph (NNW 5.8 mph) | 0.00 mm (0.00 in) | 8SM |
| | KLWS 221231Z AUTO 33005KT 8SM -SN FEW004 BKN030 OVC050 01/M01 A2986 RMK AO2 P0000 |
| 04:21 PST |  Overcast Light Snow | 1°C / 34°F | -1°C / 30°F | 87% | 1011 mb (29.85 in) | NW 11 kph (NW 6.9 mph) | 0.00 mm (0.00 in) | 5SM |
| | KLWS 221221Z AUTO 32006KT 5SM -SN BR FEW002 BKN009 OVC018 01/M01 A2986 RMK AO2 P0000 |
| 03:56 PST |  Overcast Light Snow | 2°C / 36°F | -1°C / 30°F | 81% | 1011 mb (29.85 in) | NW 7 kph (NW 4.6 mph) | 0.00 mm (0.00 in) | 4SM |
| | KLWS 221156Z AUTO 30004KT 4SM -SN FEW005 OVC014 02/M01 A2985 RMK AO2 RAE1057B15E24UPB24E36SNB36 SLP118 P0000 60002 70013 T00171011 10044 20017 51015 |
| 03:54 PST |  Overcast Light Snow | 2°C / 36°F | -1°C / 30°F | 81% | 1011 mb (29.85 in) | NW 6 kph (NW 3.5 mph) | 0.00 mm (0.00 in) | 4SM |
| | KLWS 221154Z AUTO 30003KT 4SM -SN SCT010 OVC014 02/M01 A2985 RMK AO2 RAE1057B15E24UPB24E36SNB36 P0000 |
| 03:32 PST |  Overcast Unknown Precip | 2°C / 36°F | -1°C / 30°F | 81% | 1011 mb (29.85 in) | E 6 kph (E 3.5 mph) | 0.00 mm (0.00 in) | 10SM |
| | KLWS 221132Z AUTO 09003KT 10SM UP FEW018 BKN022 OVC029 02/M01 A2985 RMK AO2 RAE1057B15E24UPB24 P0000 |
| 02:56 PST |  Overcast Light Rain | 2°C / 36°F | -1°C / 30°F | 81% | 1010 mb (29.83 in) | SSE 11 kph (SSE 6.9 mph) | 0.00 mm (0.00 in) | 10SM |
| | KLWS 221056Z AUTO 16006KT 10SM -RA FEW029 OVC038 02/M01 A2984 RMK AO2 RAB43 SLP112 P0000 T00221006 |
| 01:56 PST |  Overcast | 3°C / 37°F | -2°C / 28°F | 70% | 1009 mb (29.8 in) | WNW 6 kph (WNW 3.5 mph) | - | 10SM |
| | KLWS 220956Z AUTO 29003KT 10SM OVC044 03/M02 A2980 RMK AO2 SLP100 T00331022 |
| 00:56 PST |  Overcast | 4°C / 39°F | -2°C / 28°F | 65% | 1008 mb (29.77 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KLWS 220856Z AUTO 28006KT 10SM BKN044 OVC050 04/M02 A2978 RMK AO2 SLP090 60002 T00391017 50012 |