| 13:53 PST |  Clear | 19°C / 66°F | -8°C / 18°F | 15% | 1015 mb (29.97 in) | SW 24 kph (SW 15 mph) | - | 10SM |
| | KPSP 232153Z 21013KT 10SM CLR 19/M08 A2997 RMK AO2 SLP148 T01941078 |
| 12:53 PST |  Clear | 20°C / 68°F | -8°C / 18°F | 14% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KPSP 232053Z 00000KT 10SM CLR 20/M08 A2998 RMK AO2 SLP152 T02001083 58015 |
| 11:53 PST |  Clear | 19°C / 66°F | -8°C / 18°F | 15% | 1016 mb (30 in) | NNE 22 kph (NNE 13.8 mph) | - | 10SM |
| | KPSP 231953Z 02012G19KT 10SM CLR 19/M08 A2999 RMK AO2 SLP157 T01941083 |
| 10:53 PST |  Clear | 18°C / 64°F | -9°C / 16°F | 15% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KPSP 231853Z 00000KT 10SM CLR 18/M09 A3002 RMK AO2 SLP164 T01831094 |
| 09:53 PST |  Clear | 17°C / 63°F | -9°C / 16°F | 16% | 1017 mb (30.03 in) | NE 32 kph (NE 19.6 mph) | - | 10SM |
| | KPSP 231753Z 03017G22KT 10SM CLR 17/M09 A3002 RMK AO2 SLP167 T01721094 10172 20050 51015 |
| 08:53 PST |  Clear | 12°C / 54°F | -5°C / 23°F | 30% | 1017 mb (30.03 in) | SW 20 kph (SW 12.7 mph) | - | 10SM |
| | KPSP 231653Z 23011KT 10SM CLR 12/M05 A3002 RMK AO2 SLP166 T01171050 |
| 07:53 PST |  Clear | 9°C / 48°F | -7°C / 19°F | 32% | 1016 mb (30 in) | SW 11 kph (SW 6.9 mph) | - | 10SM |
| | KPSP 231553Z 22006KT 10SM CLR 09/M07 A2999 RMK AO2 SLP158 T00941067 |
| 06:53 PST |  Clear | 7°C / 45°F | -6°C / 21°F | 39% | 1015 mb (29.97 in) | NW 9 kph (NW 5.8 mph) | - | 10SM |
| | KPSP 231453Z 30005G15KT 10SM CLR 07/M06 A2998 RMK AO2 SLP153 T00721061 51030 |
| 05:53 PST |  Clear | 6°C / 43°F | -4°C / 25°F | 49% | 1015 mb (29.97 in) | N 11 kph (N 6.9 mph) | - | 10SM |
| | KPSP 231353Z 35006KT 10SM CLR 06/M04 A2996 RMK AO2 SLP147 T00611044 |
| 04:53 PST |  Clear | 5°C / 41°F | -4°C / 25°F | 53% | 1014 mb (29.94 in) | ENE 7 kph (ENE 4.6 mph) | - | 10SM |
| | KPSP 231253Z AUTO 06004KT 10SM CLR 05/M04 A2993 RMK AO2 PRESRR SLP135 T00501039 TSNO |
| 03:53 PST |  Clear | 6°C / 43°F | -5°C / 23°F | 46% | 1012 mb (29.88 in) | N 11 kph (N 6.9 mph) | - | 10SM |
| | KPSP 231153Z AUTO 35006KT 10SM CLR 06/M05 A2989 RMK AO2 SLP122 70002 T00611050 10111 20050 51010 TSNO |
| 02:53 PST |  Partly Cloudy | 7°C / 45°F | -4°C / 25°F | 46% | 1012 mb (29.88 in) | NNW 7 kph (NNW 4.6 mph) | - | 10SM |
| | KPSP 231053Z AUTO 34004KT 10SM FEW095 07/M04 A2988 RMK AO2 SLP121 T00721044 TSNO |
| 01:53 PST |  Partly Cloudy | 7°C / 45°F | -4°C / 25°F | 46% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KPSP 230953Z AUTO 00000KT 10SM FEW090 07/M04 A2987 RMK AO2 SLP117 T00721039 TSNO |
| 00:53 PST |  Partly Cloudy | 8°C / 46°F | -6°C / 21°F | 37% | 1011 mb (29.85 in) | NE 7 kph (NE 4.6 mph) | - | 10SM |
| | KPSP 230853Z AUTO 04004KT 10SM FEW095 08/M06 A2986 RMK AO2 SLP111 T00831056 51017 TSNO |