| 19:53 PST |  Overcast | -1°C / 30°F | -3°C / 27°F | 86% | 1021 mb (30.15 in) | SSW 9 kph (SSW 5.8 mph) | - | 10SM |
| | KPUW 230353Z AUTO 26005KT 10SM OVC022 M01/M03 A3014 RMK AO2 SLP234 T10111028 |
| 18:53 PST |  Overcast | -1°C / 30°F | -3°C / 27°F | 86% | 1021 mb (30.15 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KPUW 230253Z AUTO 27007KT 10SM OVC022 M01/M03 A3014 RMK AO2 SLP232 T10061028 51021 |
| 17:53 PST |  Overcast | -1°C / 30°F | -3°C / 27°F | 86% | 1020 mb (30.12 in) | SSW 11 kph (SSW 6.9 mph) | - | 10SM |
| | KPUW 230153Z AUTO 26006KT 10SM OVC020 M01/M03 A3011 RMK AO2 SLP222 T10061028 |
| 16:53 PST |  Overcast | -1°C / 30°F | -3°C / 27°F | 86% | 1019 mb (30.09 in) | SSW 11 kph (SSW 6.9 mph) | - | 10SM |
| | KPUW 230053Z AUTO 26006KT 10SM OVC022 M01/M03 A3010 RMK AO2 SLP219 T10061033 |
| 15:53 PST |  Overcast | -1°C / 30°F | -3°C / 27°F | 86% | 1018 mb (30.06 in) | W 9 kph (W 5.8 mph) | - | 10SM |
| | KPUW 222353Z AUTO 27005KT 10SM OVC024 M01/M03 A3007 RMK AO2 SLP208 T10061033 10000 21039 53016 |
| 14:53 PST |  Mostly Cloudy | -1°C / 30°F | -3°C / 27°F | 86% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KPUW 222253Z AUTO 00000KT 10SM SCT017 BKN022 BKN055 M01/M03 A3004 RMK AO2 SLP196 T10061028 |
| 14:51 PST |  Mostly Cloudy | -1°C / 30°F | -3°C / 27°F | 86% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KPUW 222251Z AUTO 00000KT 10SM SCT017 BKN022 BKN055 M01/M03 A3004 RMK AO2 |
| 14:41 PST |  Mostly Cloudy | -1°C / 30°F | -3°C / 27°F | 86% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KPUW 222241Z AUTO 00000KT 10SM FEW017 SCT022 BKN055 M01/M03 A3004 RMK AO2 |
| 14:11 PST |  Overcast | -1°C / 30°F | -3°C / 27°F | 86% | 1017 mb (30.03 in) | NNW 7 kph (NNW 4.6 mph) | - | 10SM |
| | KPUW 222211Z AUTO 33004KT 10SM FEW015 BKN024 OVC055 M01/M03 A3003 RMK AO2 |
| 13:53 PST |  Overcast | 0°C / 32°F | -3°C / 27°F | 80% | 1017 mb (30.03 in) | WNW 9 kph (WNW 5.8 mph) | - | 10SM |
| | KPUW 222153Z AUTO 29005KT 10SM OVC055 00/M03 A3002 RMK AO2 SLP190 T00001028 |
| 12:53 PST |  Overcast | -1°C / 30°F | -2°C / 28°F | 93% | 1016 mb (30 in) | WNW 13 kph (WNW 8.1 mph) | - | 10SM |
| | KPUW 222053Z AUTO 29007KT 10SM OVC050 M01/M02 A3000 RMK AO2 SLP184 T10061022 51021 |
| 11:53 PST |  Partly Cloudy | -1°C / 30°F | -3°C / 27°F | 86% | 1015 mb (29.97 in) | W 9 kph (W 5.8 mph) | - | 10SM |
| | KPUW 221953Z AUTO 28005KT 10SM FEW045 M01/M03 A2998 RMK AO2 SLP177 T10111033 |
| 10:53 PST |  Overcast | -1°C / 30°F | -3°C / 27°F | 86% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KPUW 221853Z AUTO 00000KT 10SM OVC090 M01/M03 A2996 RMK AO2 SLP170 T10111033 |
| 09:53 PST |  Clear | -2°C / 28°F | -4°C / 25°F | 86% | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KPUW 221753Z AUTO 00000KT 10SM CLR M02/M04 A2994 RMK AO2 SLP162 60000 T10171039 11011 21039 51020 |
| 08:53 PST |  Overcast | -2°C / 28°F | -4°C / 25°F | 86% | 1013 mb (29.91 in) | SSW 7 kph (SSW 4.6 mph) | 0.00 mm (0.00 in) | 10SM |
| | KPUW 221653Z AUTO 26004KT 10SM FEW034 BKN085 OVC110 M02/M04 A2992 RMK AO2 SNE20 SLP155 P0000 T10221039 |
| 08:25 PST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1013 mb (29.91 in) | W 7 kph (W 4.6 mph) | 0.00 mm (0.00 in) | 8SM |
| | KPUW 221625Z AUTO 27004KT 8SM BKN032 BKN040 OVC095 M02/M03 A2991 RMK AO2 SNE20 P0000 |
| 08:13 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1013 mb (29.91 in) | W 6 kph (W 3.5 mph) | 0.00 mm (0.00 in) | 4SM |
| | KPUW 221613Z AUTO 27003KT 4SM -SN BR BKN028 OVC040 M02/M03 A2990 RMK AO2 P0000 |
| 08:04 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1013 mb (29.91 in) | SSW 7 kph (SSW 4.6 mph) | 0.00 mm (0.00 in) | 2 1/2SM |
| | KPUW 221604Z AUTO 26004KT 2 1/2SM -SN BR BKN024 OVC029 M02/M03 A2990 RMK AO2 P0000 |
| 07:53 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1013 mb (29.91 in) | SSW 7 kph (SSW 4.6 mph) | 0.00 mm (0.00 in) | 1 1/2SM |
| | KPUW 221553Z AUTO 25004KT 1 1/2SM -SN BR BKN020 OVC029 M02/M03 A2990 RMK AO2 SLP147 P0000 T10171028 |
| 07:45 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1012 mb (29.88 in) | SSW 9 kph (SSW 5.8 mph) | 0.00 mm (0.00 in) | 1 1/2SM |
| | KPUW 221545Z AUTO 26005KT 1 1/2SM -SN BR BKN020 OVC029 M02/M03 A2989 RMK AO2 P0000 |
| 07:32 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1012 mb (29.88 in) | SSW 9 kph (SSW 5.8 mph) | 0.00 mm (0.00 in) | 2 1/2SM |
| | KPUW 221532Z AUTO 26005KT 2 1/2SM -SN BR OVC022 M02/M03 A2989 RMK AO2 P0000 |
| 06:53 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1012 mb (29.88 in) | W 9 kph (W 5.8 mph) | 0.00 mm (0.00 in) | 4SM |
| | KPUW 221453Z AUTO 27005KT 4SM -SN BR FEW009 BKN026 OVC040 M02/M03 A2988 RMK AO2 SLP136 P0000 60000 T10171028 53017 |
| 06:46 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1012 mb (29.88 in) | W 7 kph (W 4.6 mph) | 0.00 mm (0.00 in) | 4SM |
| | KPUW 221446Z AUTO 27004KT 4SM -SN BR FEW009 BKN028 OVC040 M02/M03 A2987 RMK AO2 P0000 |
| 06:38 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1012 mb (29.88 in) | W 7 kph (W 4.6 mph) | 0.00 mm (0.00 in) | 3SM |
| | KPUW 221438Z AUTO 27004KT 3SM -SN BR SCT028 BKN040 OVC048 M02/M03 A2987 RMK AO2 P0000 |
| 06:03 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1011 mb (29.85 in) | SSW 7 kph (SSW 4.6 mph) | 0.00 mm (0.00 in) | 2 1/2SM |
| | KPUW 221403Z AUTO 25004KT 2 1/2SM -SN BR FEW037 SCT046 OVC060 M02/M03 A2986 RMK AO2 P0000 |
| 05:53 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1011 mb (29.85 in) | SSW 11 kph (SSW 6.9 mph) | 0.00 mm (0.00 in) | 3SM |
| | KPUW 221353Z AUTO 25006KT 3SM -SN BR SCT035 BKN046 OVC055 M02/M03 A2985 RMK AO2 SLP129 P0000 T10171028 |
| 05:44 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1011 mb (29.85 in) | SSW 15 kph (SSW 9.2 mph) | 0.00 mm (0.00 in) | 3SM |
| | KPUW 221344Z AUTO 25008KT 3SM -SN BR SCT028 OVC046 M02/M03 A2985 RMK AO2 P0000 |
| 05:25 PST |  Overcast Light Snow | -1°C / 30°F | -3°C / 27°F | 86% | 1011 mb (29.85 in) | SSW 13 kph (SSW 8.1 mph) | 0.00 mm (0.00 in) | 3SM |
| | KPUW 221325Z AUTO 25007KT 3SM -SN BR BKN022 OVC043 M01/M03 A2985 RMK AO2 P0000 |
| 05:02 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1010 mb (29.83 in) | SSW 11 kph (SSW 6.9 mph) | 0.00 mm (0.00 in) | 2 1/2SM |
| | KPUW 221302Z AUTO 24006KT 2 1/2SM -SN BR SCT009 OVC016 M02/M03 A2984 RMK AO2 P0000 |
| 04:53 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1010 mb (29.83 in) | SSW 15 kph (SSW 9.2 mph) | 0.00 mm (0.00 in) | 2SM |
| | KPUW 221253Z AUTO 24008KT 2SM -SN BR BKN009 OVC012 M02/M03 A2983 RMK AO2 SLP121 P0000 T10171028 |
| 04:38 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1010 mb (29.83 in) | SSW 13 kph (SSW 8.1 mph) | 0.00 mm (0.00 in) | 1 1/2SM |
| | KPUW 221238Z AUTO 24007KT 1 1/2SM -SN BR OVC009 M02/M03 A2983 RMK AO2 P0000 |
| 04:20 PST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1010 mb (29.83 in) | SSW 19 kph (SSW 11.5 mph) | 0.00 mm (0.00 in) | 2SM |
| | KPUW 221220Z AUTO 25010KT 2SM -SN BR OVC009 M02/M03 A2983 RMK AO2 P0000 |
| 03:53 PST |  Overcast Light Snow | -1°C / 30°F | -3°C / 27°F | 86% | 1010 mb (29.83 in) | SSW 20 kph (SSW 12.7 mph) | 0.00 mm (0.00 in) | 1 1/2SM |
| | KPUW 221153Z AUTO 25011KT 1 1/2SM -SN BR OVC009 M01/M03 A2982 RMK AO2 SNB01 SLP116 P0000 60000 70008 T10111028 10000 21011 52016 |
| 03:45 PST |  Overcast Light Snow | -1°C / 30°F | -3°C / 27°F | 86% | 1010 mb (29.83 in) | SSW 20 kph (SSW 12.7 mph) | 0.00 mm (0.00 in) | 1 3/4SM |
| | KPUW 221145Z AUTO 25011KT 1 3/4SM -SN BR BKN009 OVC016 M01/M03 A2982 RMK AO2 SNB01 P0000 |
| 03:35 PST |  Overcast Light Snow | -1°C / 30°F | -3°C / 27°F | 86% | 1010 mb (29.83 in) | SSW 17 kph (SSW 10.4 mph) | 0.00 mm (0.00 in) | 2SM |
| | KPUW 221135Z AUTO 25009G15KT 2SM -SN BR BKN011 OVC018 M01/M03 A2982 RMK AO2 SNB01 P0000 |
| 03:22 PST |  Overcast Light Snow | -1°C / 30°F | -3°C / 27°F | 86% | 1010 mb (29.83 in) | SSW 20 kph (SSW 12.7 mph) | 0.00 mm (0.00 in) | 6SM |
| | KPUW 221122Z AUTO 24011KT 6SM -SN BR BKN018 OVC035 M01/M03 A2982 RMK AO2 SNB01 P0000 |
| 02:53 PST |  Overcast | -1°C / 30°F | -3°C / 27°F | 86% | 1009 mb (29.8 in) | SSW 15 kph (SSW 9.2 mph) | - | 9SM |
| | KPUW 221053Z AUTO 26008G15KT 9SM FEW026 BKN055 OVC075 M01/M03 A2981 RMK AO2 SLP111 T10061033 |
| 01:53 PST |  Overcast | 0°C / 32°F | -4°C / 25°F | 75% | 1009 mb (29.8 in) | SSW 22 kph (SSW 13.8 mph) | - | 10SM |
| | KPUW 220953Z AUTO 26012G19KT 10SM OVC075 00/M04 A2979 RMK AO2 SLP102 T00001039 |
| 00:53 PST |  Overcast | 0°C / 32°F | -4°C / 25°F | 75% | 1008 mb (29.77 in) | SSW 19 kph (SSW 11.5 mph) | 0.00 mm (0.00 in) | 10SM |
| | KPUW 220853Z AUTO 25010KT 10SM OVC065 00/M04 A2977 RMK AO2 SNE0757 SLP098 P0000 60000 T00001044 51012 |