| 12:53 PST |  Overcast Light Snow | -3°C / 27°F | -4°C / 25°F | 93% | 1014 mb (29.94 in) | Calm | 0.76 mm (0.03 in) | 1/2SM |
| | KYKM 152053Z 00000KT 1/2SM -SN BR OVC026 M03/M04 A2995 RMK AO2 SFC VIS 1 1/4 SLP156 P0003 60006 T10281039 58016 |
| 12:07 PST |  Overcast Light Snow | -3°C / 27°F | -4°C / 25°F | 93% | 1015 mb (29.97 in) | SSW 6 kph (SSW 3.5 mph) | 0.00 mm (0.00 in) | 1/2SM |
| | KYKM 152007Z 26003KT 1/2SM -SN BR FEW006 OVC024 M03/M04 A2997 RMK AO2 SFC VIS 3/4 P0000 |
| 11:53 PST |  Overcast Light Snow | -3°C / 27°F | -4°C / 25°F | 93% | 1015 mb (29.97 in) | SSW 6 kph (SSW 3.5 mph) | 0.76 mm (0.03 in) | 1/2SM |
| | KYKM 151953Z 26003KT 1/2SM -SN BR BKN006 OVC024 M03/M04 A2998 RMK AO2 SFC VIS 3/4 SNB1858 SLP165 P0003 T10331044 |
| 11:35 PST |  Overcast Snow | -3°C / 27°F | -4°C / 25°F | 93% | 1015 mb (29.97 in) | Calm | 0.25 mm (0.01 in) | 1/2SM |
| | KYKM 151935Z 00000KT 1/2SM SN FZFG BKN006 OVC027 M03/M04 A2998 RMK AO2 SNB1858 P0001 |
| 11:26 PST |  Overcast Light Snow | -3°C / 27°F | -4°C / 25°F | 93% | 1015 mb (29.97 in) | Calm | 0.00 mm (0.00 in) | 3/4SM |
| | KYKM 151926Z 00000KT 3/4SM -SN BR SCT008 OVC027 M03/M04 A2998 RMK AO2 SNB1858 P0000 |
| 11:09 PST |  Overcast Light Snow | -3°C / 27°F | -5°C / 23°F | 86% | 1016 mb (30 in) | Calm | 0.00 mm (0.00 in) | 1 3/4SM |
| | KYKM 151909Z 00000KT 1 3/4SM -SN BR FEW022 OVC029 M03/M05 A2999 RMK AO2 SNB1858 P0000 |
| 10:53 PST |  Overcast | -3°C / 27°F | -5°C / 23°F | 86% | 1016 mb (30 in) | Calm | - | 8SM |
| | KYKM 151853Z 00000KT 8SM FEW022 BKN029 OVC042 M03/M05 A2999 RMK AO2 SLP171 T10281050 |
| 10:48 PST |  Overcast | -3°C / 27°F | -5°C / 23°F | 86% | 1016 mb (30 in) | Calm | - | 9SM |
| | KYKM 151848Z 00000KT 9SM FEW022 BKN029 OVC042 M03/M05 A3000 RMK AO2 |
| 10:17 PST |  Overcast | -2°C / 28°F | -5°C / 23°F | 80% | 1016 mb (30 in) | Calm | - | 10SM |
| | KYKM 151817Z 00000KT 10SM SCT025 BKN031 OVC044 M02/M05 A3001 RMK AO2 |
| 09:53 PST |  Overcast | -3°C / 27°F | -5°C / 23°F | 86% | 1016 mb (30 in) | Calm | - | 8SM |
| | KYKM 151753Z 00000KT 8SM OVC025 M03/M05 A3000 RMK AO2 SLP175 T10331050 11028 21050 53009 |
| 08:53 PST |  Overcast Fog And Mist | -3°C / 27°F | -5°C / 23°F | 86% | 1016 mb (30 in) | Calm | - | 6SM |
| | KYKM 151653Z 00000KT 6SM BR OVC025 M03/M05 A3000 RMK AO2 SLP173 T10331050 |
| 07:53 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KYKM 151553Z 00000KT 10SM OVC027 M04/M06 A2998 RMK AO2 SLP167 T10391056 |
| 06:53 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1015 mb (29.97 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KYKM 151453Z 28003KT 10SM OVC027 M04/M06 A2997 RMK AO2 SLP165 T10391056 53009 |
| 05:53 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1015 mb (29.97 in) | W 7 kph (W 4.6 mph) | - | 10SM |
| | KYKM 151353Z 27004KT 10SM OVC029 M04/M06 A2996 RMK AO2 SLP158 T10441056 |
| 05:04 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KYKM 151304Z AUTO 28003KT 10SM OVC029 M04/M06 A2995 RMK AO2 |
| 04:53 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | WNW 7 kph (WNW 4.6 mph) | - | 10SM |
| | KYKM 151253Z AUTO 29004KT 10SM SCT019 OVC031 M04/M06 A2995 RMK AO2 SLP155 T10441056 |
| 04:49 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | W 7 kph (W 4.6 mph) | - | 10SM |
| | KYKM 151249Z AUTO 27004KT 10SM SCT019 OVC031 M04/M06 A2995 RMK AO2 |
| 03:53 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KYKM 151153Z AUTO 00000KT 10SM BKN017 BKN034 OVC080 M04/M06 A2995 RMK AO2 SLP154 60020 70033 T10441056 11039 21044 55003 |
| 03:10 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KYKM 151110Z AUTO 25003KT 10SM BKN017 OVC037 M04/M06 A2994 RMK AO2 |
| 02:53 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | W 6 kph (W 3.5 mph) | 0.25 mm (0.01 in) | 10SM |
| | KYKM 151053Z AUTO 27003KT 10SM OVC037 M04/M06 A2994 RMK AO2 SNE21 SLP151 P0001 T10441056 |
| 02:07 PST |  Overcast Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 1014 mb (29.94 in) | SSW 7 kph (SSW 4.6 mph) | 0.25 mm (0.01 in) | 3SM |
| | KYKM 151007Z AUTO 25004KT 3SM -SN BR FEW016 OVC039 M04/M05 A2994 RMK AO2 P0001 |
| 01:53 PST |  Overcast Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | SSW 7 kph (SSW 4.6 mph) | 0.25 mm (0.01 in) | 1 1/2SM |
| | KYKM 150953Z AUTO 25004KT 1 1/2SM -SN BR SCT016 OVC041 M04/M06 A2994 RMK AO2 SLP152 P0001 T10441056 |
| 01:48 PST |  Overcast Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 1014 mb (29.94 in) | SSW 9 kph (SSW 5.8 mph) | 0.25 mm (0.01 in) | 1 3/4SM |
| | KYKM 150948Z AUTO 25005KT 1 3/4SM -SN BR BKN016 OVC041 M04/M05 A2994 RMK AO2 P0001 |
| 01:41 PST |  Overcast Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 1014 mb (29.94 in) | SSW 7 kph (SSW 4.6 mph) | 0.25 mm (0.01 in) | 2SM |
| | KYKM 150941Z AUTO 25004KT 2SM -SN BR SCT020 OVC041 M04/M05 A2994 RMK AO2 P0001 |
| 01:34 PST |  Overcast Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 1014 mb (29.94 in) | Calm | 0.25 mm (0.01 in) | 3SM |
| | KYKM 150934Z AUTO 00000KT 3SM -SN BR FEW020 BKN036 OVC044 M04/M05 A2994 RMK AO2 P0001 |
| 01:19 PST |  Overcast Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | SSW 7 kph (SSW 4.6 mph) | 0.25 mm (0.01 in) | 2SM |
| | KYKM 150919Z AUTO 25004KT 2SM -SN BR SCT010 OVC037 M04/M06 A2995 RMK AO2 P0001 |
| 01:07 PST |  Overcast Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | SSW 9 kph (SSW 5.8 mph) | 0.25 mm (0.01 in) | 1 1/4SM |
| | KYKM 150907Z AUTO 26005KT 1 1/4SM -SN BR BKN010 OVC037 M04/M06 A2995 RMK AO2 P0001 |
| 00:53 PST |  Obscured Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | SSW 9 kph (SSW 5.8 mph) | 1.27 mm (0.05 in) | 1SM |
| | KYKM 150853Z AUTO 26005KT 1SM -SN BR VV008 M04/M06 A2995 RMK AO2 SLP157 P0005 60018 T10441056 58015 |
| 00:43 PST |  Obscured Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | SSW 7 kph (SSW 4.6 mph) | 1.02 mm (0.04 in) | 1SM |
| | KYKM 150843Z AUTO 25004KT 1SM -SN BR VV008 M04/M06 A2995 RMK AO2 P0004 |
| 00:34 PST |  Obscured Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1014 mb (29.94 in) | SSW 7 kph (SSW 4.6 mph) | 0.76 mm (0.03 in) | 3/4SM |
| | KYKM 150834Z AUTO 26004KT 3/4SM -SN BR VV005 M04/M06 A2995 RMK AO2 P0003 |
| 00:24 PST |  Obscured Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 1014 mb (29.94 in) | SSW 7 kph (SSW 4.6 mph) | 0.76 mm (0.03 in) | 3/4SM |
| | KYKM 150824Z AUTO 26004KT 3/4SM -SN BR VV004 M04/M05 A2995 RMK AO2 P0003 |
| 00:00 PST |  Obscured Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1015 mb (29.97 in) | SSW 9 kph (SSW 5.8 mph) | 0.00 mm (0.00 in) | 3/4SM |
| | KYKM 150800Z AUTO 24005KT 3/4SM -SN BR VV007 M04/M06 A2996 RMK AO2 P0000 |