| 09:15 PST |  Mostly Cloudy | -12°C / 10°F | -17°C / 1°F | 67% | 1023 mb (30.21 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KCOE 091715Z AUTO 19004KT 10SM BKN050 M12/M17 A3020 RMK AO1 |
| 08:55 PST |  Mostly Cloudy | -13°C / 9°F | -17°C / 1°F | 72% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KCOE 091655Z AUTO 00000KT 10SM SCT046 BKN055 M13/M17 A3020 RMK AO1 |
| 08:35 PST |  Mostly Cloudy | -12°C / 10°F | -17°C / 1°F | 67% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KCOE 091635Z AUTO 00000KT 10SM BKN050 M12/M17 A3019 RMK AO1 |
| 08:15 PST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1022 mb (30.18 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KCOE 091615Z AUTO 22004KT 10SM OVC050 M13/M17 A3019 RMK AO1 |
| 07:55 PST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KCOE 091555Z AUTO 00000KT 10SM OVC050 M13/M17 A3019 RMK AO1 |
| 07:35 PST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1022 mb (30.18 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KCOE 091535Z AUTO 21004KT 10SM OVC048 M13/M17 A3019 RMK AO1 |
| 07:15 PST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1022 mb (30.18 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KCOE 091515Z AUTO 18004KT 10SM OVC048 M13/M17 A3019 RMK AO1 |
| 06:55 PST |  Overcast | -13°C / 9°F | -16°C / 3°F | 78% | 1022 mb (30.18 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KCOE 091455Z AUTO 18004KT 10SM OVC048 M13/M16 A3018 RMK AO1 52003 |
| 06:35 PST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1022 mb (30.18 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KCOE 091435Z AUTO 19004KT 10SM OVC050 M13/M17 A3018 RMK AO1 |
| 06:15 PST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1022 mb (30.18 in) | S 9 kph (S 5.8 mph) | - | 7SM |
| | KCOE 091415Z AUTO 18005KT 7SM FEW032 OVC055 M13/M17 A3018 RMK AO1 |
| 05:55 PST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1022 mb (30.18 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KCOE 091355Z AUTO 18004KT 10SM OVC055 M13/M17 A3018 RMK AO1 |
| 05:35 PST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1022 mb (30.18 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KCOE 091335Z AUTO 19003KT 10SM OVC055 M13/M17 A3018 RMK AO1 |
| 05:15 PST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1022 mb (30.18 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KCOE 091315Z AUTO 23004KT 10SM OVC055 M13/M17 A3017 RMK AO1 |
| 04:55 PST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1022 mb (30.18 in) | SW 9 kph (SW 5.8 mph) | - | 10SM |
| | KCOE 091255Z AUTO 22005KT 10SM OVC055 M13/M17 A3017 RMK AO1 |
| 04:35 PST |  Overcast | -13°C / 9°F | -18°C / 0°F | 66% | 1022 mb (30.18 in) | SSE 7 kph (SSE 4.6 mph) | - | 10SM |
| | KCOE 091235Z AUTO 20004KT 10SM OVC065 M13/M18 A3017 RMK AO1 |
| 04:15 PST |  Overcast | -13°C / 9°F | -18°C / 0°F | 66% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KCOE 091215Z AUTO 00000KT 10SM OVC065 M13/M18 A3017 RMK AO1 |
| 03:55 PST |  Overcast | -13°C / 9°F | -18°C / 0°F | 66% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KCOE 091155Z AUTO 00000KT 10SM OVC065 M13/M18 A3017 RMK AO1 11120 21140 54000 |
| 03:35 PST |  Mostly Cloudy | -13°C / 9°F | -18°C / 0°F | 66% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KCOE 091135Z AUTO 00000KT 10SM BKN065 M13/M18 A3016 RMK AO1 |
| 03:15 PST |  Partly Cloudy | -14°C / 7°F | -18°C / 0°F | 72% | 1021 mb (30.15 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KCOE 091115Z AUTO 24003KT 10SM FEW065 M14/M18 A3016 RMK AO1 |
| 02:55 PST |  Partly Cloudy | -14°C / 7°F | -19°C / -2°F | 66% | 1021 mb (30.15 in) | SW 9 kph (SW 5.8 mph) | - | 10SM |
| | KCOE 091055Z AUTO 23005KT 10SM FEW065 M14/M19 A3016 RMK AO1 |
| 02:35 PST |  Mostly Cloudy | -13°C / 9°F | -18°C / 0°F | 66% | 1021 mb (30.15 in) | SW 9 kph (SW 5.8 mph) | - | 10SM |
| | KCOE 091035Z AUTO 23005KT 10SM FEW065 BKN090 M13/M18 A3016 RMK AO1 |
| 02:15 PST |  Overcast | -13°C / 9°F | -18°C / 0°F | 66% | 1021 mb (30.15 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KCOE 091015Z AUTO 20003KT 10SM OVC080 M13/M18 A3016 RMK AO1 |
| 01:55 PST |  Overcast | -12°C / 10°F | -18°C / 0°F | 61% | 1022 mb (30.18 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KCOE 090955Z AUTO 24003KT 10SM BKN080 OVC085 M12/M18 A3017 RMK AO1 |
| 01:35 PST |  Overcast | -13°C / 9°F | -18°C / 0°F | 66% | 1022 mb (30.18 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KCOE 090935Z AUTO 26004KT 10SM BKN060 OVC080 M13/M18 A3017 RMK AO1 |
| 01:15 PST |  Overcast | -13°C / 9°F | -18°C / 0°F | 66% | 1022 mb (30.18 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KCOE 090915Z AUTO 24003KT 10SM SCT070 OVC090 M13/M18 A3017 RMK AO1 |
| 00:55 PST |  Overcast | -13°C / 9°F | -18°C / 0°F | 66% | 1022 mb (30.18 in) | SSW 15 kph (SSW 9.2 mph) | - | 10SM |
| | KCOE 090855Z AUTO 26008KT 10SM OVC090 M13/M18 A3017 RMK AO1 57003 |
| 00:35 PST |  Overcast | -13°C / 9°F | -18°C / 0°F | 66% | 1022 mb (30.18 in) | SSW 11 kph (SSW 6.9 mph) | - | 10SM |
| | KCOE 090835Z AUTO 24006KT 10SM OVC080 M13/M18 A3017 RMK AO1 |
| 00:15 PST |  Overcast | -13°C / 9°F | -18°C / 0°F | 66% | 1022 mb (30.18 in) | SSW 11 kph (SSW 6.9 mph) | - | 10SM |
| | KCOE 090815Z AUTO 25006KT 10SM OVC080 M13/M18 A3017 RMK AO1 |