| 13:53 PST |  Clear | 1°C / 34°F | -7°C / 19°F | 56% | 1024 mb (30.24 in) | N 11 kph (N 6.9 mph) | - | 10SM |
| | KEPH 262153Z AUTO 01006KT 10SM CLR 01/M07 A3025 RMK AO2 SLP259 T00061067 |
| 12:53 PST |  Clear | 0°C / 32°F | -7°C / 19°F | 60% | 1025 mb (30.27 in) | NNE 13 kph (NNE 8.1 mph) | - | 10SM |
| | KEPH 262053Z AUTO 02007KT 10SM CLR 00/M07 A3027 RMK AO2 SLP268 T00001072 58020 |
| 11:53 PST |  Clear | -1°C / 30°F | -7°C / 19°F | 64% | 1026 mb (30.3 in) | N 15 kph (N 9.2 mph) | - | 10SM |
| | KEPH 261953Z AUTO 01008KT 10SM CLR M01/M07 A3030 RMK AO2 SLP278 T10111072 |
| 10:53 PST |  Clear | -2°C / 28°F | -8°C / 18°F | 64% | 1027 mb (30.33 in) | N 13 kph (N 8.1 mph) | - | 10SM |
| | KEPH 261853Z AUTO 36007KT 10SM CLR M02/M08 A3032 RMK AO2 SLP286 T10221078 |
| 09:53 PST |  Clear | -3°C / 27°F | -8°C / 18°F | 69% | 1027 mb (30.33 in) | NNE 13 kph (NNE 8.1 mph) | - | 10SM |
| | KEPH 261753Z AUTO 02007KT 10SM CLR M03/M08 A3033 RMK AO2 SLP290 T10331078 11033 21094 55001 |
| 08:53 PST |  Clear | -6°C / 21°F | -9°C / 16°F | 80% | 1027 mb (30.33 in) | NNW 7 kph (NNW 4.6 mph) | - | 10SM |
| | KEPH 261653Z AUTO 34004KT 10SM CLR M06/M09 A3033 RMK AO2 SLP292 T10611089 |
| 07:53 PST |  Clear | -9°C / 16°F | -11°C / 12°F | 86% | 1027 mb (30.33 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KEPH 261553Z AUTO 35004KT 10SM CLR M09/M11 A3034 RMK AO2 SLP293 T10891111 |
| 06:53 PST |  Clear | -8°C / 18°F | -10°C / 14°F | 86% | 1027 mb (30.33 in) | NNW 9 kph (NNW 5.8 mph) | - | 10SM |
| | KEPH 261453Z AUTO 34005KT 10SM CLR M08/M10 A3034 RMK AO2 SLP293 T10781100 56007 |
| 05:53 PST |  Clear | -7°C / 19°F | -10°C / 14°F | 79% | 1027 mb (30.33 in) | NW 11 kph (NW 6.9 mph) | - | 10SM |
| | KEPH 261353Z AUTO 32006KT 10SM CLR M07/M10 A3034 RMK AO2 SLP293 T10721100 |
| 04:53 PST |  Clear | -7°C / 19°F | -10°C / 14°F | 79% | 1027 mb (30.33 in) | NNW 11 kph (NNW 6.9 mph) | - | 10SM |
| | KEPH 261253Z AUTO 33006KT 10SM CLR M07/M10 A3034 RMK AO2 SLP294 T10721100 |
| 03:53 PST |  Clear | -6°C / 21°F | -9°C / 16°F | 80% | 1028 mb (30.36 in) | NNW 11 kph (NNW 6.9 mph) | - | 10SM |
| | KEPH 261153Z AUTO 33006KT 10SM CLR M06/M09 A3036 RMK AO2 SLP298 T10611094 11044 21061 58001 |
| 02:53 PST |  Clear | -6°C / 21°F | -9°C / 16°F | 80% | 1028 mb (30.36 in) | NNW 13 kph (NNW 8.1 mph) | - | 10SM |
| | KEPH 261053Z AUTO 33007KT 10SM CLR M06/M09 A3037 RMK AO2 SLP301 T10611094 |
| 01:53 PST |  Clear | -6°C / 21°F | -9°C / 16°F | 80% | 1028 mb (30.36 in) | NW 17 kph (NW 10.4 mph) | - | 10SM |
| | KEPH 260953Z AUTO 32009KT 10SM CLR M06/M09 A3036 RMK AO2 SLP299 T10561094 |
| 00:53 PST |  Clear | -6°C / 21°F | -9°C / 16°F | 80% | 1028 mb (30.36 in) | N 11 kph (N 6.9 mph) | - | 10SM |
| | KEPH 260853Z AUTO 35006KT 10SM CLR M06/M09 A3036 RMK AO2 SLP299 T10611094 58009 |