| 09:15 PST |  Overcast | -8°C / 18°F | -16°C / 3°F | 53% | 1020 mb (30.12 in) | SSE 9 kph (SSE 5.8 mph) | - | 10SM |
| | KCOE 101715Z AUTO 15005KT 10SM OVC100 M08/M16 A3013 RMK AO1 TSNO |
| 08:55 PST |  Overcast | -9°C / 16°F | -16°C / 3°F | 57% | 1020 mb (30.12 in) | SSE 7 kph (SSE 4.6 mph) | - | 10SM |
| | KCOE 101655Z AUTO 15004KT 10SM OVC100 M09/M16 A3013 RMK AO1 |
| 08:35 PST |  Overcast | -9°C / 16°F | -16°C / 3°F | 57% | 1020 mb (30.12 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KCOE 101635Z AUTO 14004KT 10SM BKN100 OVC120 M09/M16 A3013 RMK AO1 |
| 08:15 PST |  Mostly Cloudy | -9°C / 16°F | -16°C / 3°F | 57% | 1020 mb (30.12 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KCOE 101615Z AUTO 12003KT 10SM BKN100 BKN120 M09/M16 A3013 RMK AO1 |
| 07:55 PST |  Mostly Cloudy | -9°C / 16°F | -16°C / 3°F | 57% | 1020 mb (30.12 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KCOE 101555Z AUTO 13004KT 10SM BKN100 M09/M16 A3012 RMK AO1 |
| 07:35 PST |  Overcast | -9°C / 16°F | -16°C / 3°F | 57% | 1020 mb (30.12 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KCOE 101535Z AUTO 14003KT 10SM OVC100 M09/M16 A3012 RMK AO1 |
| 07:15 PST |  Mostly Cloudy | -10°C / 14°F | -16°C / 3°F | 62% | 1020 mb (30.12 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KCOE 101515Z AUTO 14004KT 10SM BKN100 M10/M16 A3011 RMK AO1 |
| 06:55 PST |  Partly Cloudy | -11°C / 12°F | -16°C / 3°F | 67% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KCOE 101455Z AUTO 00000KT 10SM SCT090 M11/M16 A3012 RMK AO1 57010 |
| 06:35 PST |  Partly Cloudy | -12°C / 10°F | -16°C / 3°F | 72% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KCOE 101435Z AUTO 00000KT 10SM SCT100 M12/M16 A3012 RMK AO1 |
| 06:15 PST |  Mostly Cloudy | -11°C / 12°F | -16°C / 3°F | 67% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KCOE 101415Z AUTO 00000KT 10SM BKN100 M11/M16 A3012 RMK AO1 |
| 05:55 PST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KCOE 101355Z AUTO 00000KT 10SM OVC100 M13/M17 A3012 RMK AO1 |
| 05:35 PST |  Mostly Cloudy | -13°C / 9°F | -17°C / 1°F | 72% | 1020 mb (30.12 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KCOE 101335Z AUTO 07003KT 10SM BKN100 M13/M17 A3013 RMK AO1 |
| 05:15 PST |  Partly Cloudy | -12°C / 10°F | -18°C / 0°F | 61% | 1020 mb (30.12 in) | NNE 6 kph (NNE 3.5 mph) | - | 10SM |
| | KCOE 101315Z AUTO 02003KT 10SM SCT100 M12/M18 A3013 RMK AO1 |
| 04:55 PST |  Clear | -11°C / 12°F | -18°C / 0°F | 57% | 1020 mb (30.12 in) | SSE 7 kph (SSE 4.6 mph) | - | 10SM |
| | KCOE 101255Z AUTO 20004KT 10SM CLR M11/M18 A3013 RMK AO1 |
| 04:35 PST |  Partly Cloudy | -11°C / 12°F | -17°C / 1°F | 62% | 1020 mb (30.12 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KCOE 101235Z AUTO 17004KT 10SM FEW090 M11/M17 A3013 RMK AO1 |
| 04:15 PST |  Clear | -11°C / 12°F | -17°C / 1°F | 62% | 1021 mb (30.15 in) | S 11 kph (S 6.9 mph) | - | 10SM |
| | KCOE 101215Z AUTO 17006KT 10SM CLR M11/M17 A3014 RMK AO1 |
| 03:55 PST |  Clear | -11°C / 12°F | -17°C / 1°F | 62% | 1021 mb (30.15 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KCOE 101155Z AUTO 18003KT 10SM CLR M11/M17 A3015 RMK AO1 11090 21120 57014 |
| 03:35 PST |  Clear | -12°C / 10°F | -18°C / 0°F | 61% | 1021 mb (30.15 in) | S 11 kph (S 6.9 mph) | - | 10SM |
| | KCOE 101135Z AUTO 19006KT 10SM CLR M12/M18 A3015 RMK AO1 |
| 03:15 PST |  Mostly Cloudy | -11°C / 12°F | -18°C / 0°F | 57% | 1021 mb (30.15 in) | S 11 kph (S 6.9 mph) | - | 10SM |
| | KCOE 101115Z AUTO 19006KT 10SM BKN050 M11/M18 A3016 RMK AO1 |
| 02:55 PST |  Overcast | -11°C / 12°F | -17°C / 1°F | 62% | 1021 mb (30.15 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KCOE 101055Z AUTO 18004KT 10SM OVC050 M11/M17 A3016 RMK AO1 |
| 02:35 PST |  Overcast | -11°C / 12°F | -17°C / 1°F | 62% | 1022 mb (30.18 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KCOE 101035Z AUTO 19004KT 10SM OVC050 M11/M17 A3017 RMK AO1 |
| 02:15 PST |  Overcast | -10°C / 14°F | -17°C / 1°F | 57% | 1022 mb (30.18 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KCOE 101015Z AUTO 19005KT 10SM OVC050 M10/M17 A3017 RMK AO1 |
| 01:55 PST |  Overcast | -9°C / 16°F | -17°C / 1°F | 53% | 1022 mb (30.18 in) | SSE 11 kph (SSE 6.9 mph) | - | 10SM |
| | KCOE 100955Z AUTO 20006KT 10SM OVC050 M09/M17 A3017 RMK AO1 |
| 01:35 PST |  Overcast | -9°C / 16°F | -17°C / 1°F | 53% | 1022 mb (30.18 in) | SW 9 kph (SW 5.8 mph) | - | 10SM |
| | KCOE 100935Z AUTO 21005KT 10SM OVC050 M09/M17 A3017 RMK AO1 |
| 01:15 PST |  Overcast | -9°C / 16°F | -17°C / 1°F | 53% | 1022 mb (30.18 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KCOE 100915Z AUTO 23004KT 10SM OVC050 M09/M17 A3018 RMK AO1 |
| 00:55 PST |  Overcast | -9°C / 16°F | -17°C / 1°F | 53% | 1022 mb (30.18 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KCOE 100855Z AUTO 24003KT 10SM OVC050 M09/M17 A3019 RMK AO1 57007 |
| 00:35 PST |  Overcast | -9°C / 16°F | -18°C / 0°F | 48% | 1022 mb (30.18 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KCOE 100835Z AUTO 25003KT 10SM OVC050 M09/M18 A3019 RMK AO1 |
| 00:15 PST |  Overcast | -9°C / 16°F | -18°C / 0°F | 48% | 1022 mb (30.18 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KCOE 100815Z AUTO 26003KT 10SM OVC050 M09/M18 A3019 RMK AO1 |