| 10:35 PST |  Partly Cloudy | -3°C / 27°F | -6°C / 21°F | 80% | 1024 mb (30.24 in) | NE 17 kph (NE 10.4 mph) | - | 10SM |
| | KCOE 051835Z AUTO 03009KT 10SM FEW120 M03/M06 A3025 RMK AO1 |
| 10:15 PST |  Clear | -3°C / 27°F | -6°C / 21°F | 80% | 1024 mb (30.24 in) | NE 15 kph (NE 9.2 mph) | - | 10SM |
| | KCOE 051815Z AUTO 04008KT 10SM CLR M03/M06 A3025 RMK AO1 |
| 09:55 PST |  Partly Cloudy | -4°C / 25°F | -7°C / 19°F | 80% | 1025 mb (30.27 in) | NE 13 kph (NE 8.1 mph) | - | 10SM |
| | KCOE 051755Z AUTO 05007KT 10SM SCT090 M04/M07 A3026 RMK AO1 11040 21080 52014 |
| 09:35 PST |  Mostly Cloudy | -4°C / 25°F | -7°C / 19°F | 80% | 1025 mb (30.27 in) | NE 9 kph (NE 5.8 mph) | - | 10SM |
| | KCOE 051735Z AUTO 03005KT 10SM BKN100 M04/M07 A3026 RMK AO1 |
| 09:15 PST |  Mostly Cloudy | -5°C / 23°F | -7°C / 19°F | 86% | 1024 mb (30.24 in) | NE 15 kph (NE 9.2 mph) | - | 10SM |
| | KCOE 051715Z AUTO 03008KT 10SM BKN100 M05/M07 A3025 RMK AO1 |
| 08:55 PST |  Overcast | -5°C / 23°F | -8°C / 18°F | 80% | 1024 mb (30.24 in) | NE 15 kph (NE 9.2 mph) | - | 10SM |
| | KCOE 051655Z AUTO 03008KT 10SM OVC100 M05/M08 A3025 RMK AO1 |
| 08:35 PST |  Overcast | -5°C / 23°F | -8°C / 18°F | 80% | 1024 mb (30.24 in) | NE 13 kph (NE 8.1 mph) | - | 10SM |
| | KCOE 051635Z AUTO 05007KT 10SM OVC100 M05/M08 A3025 RMK AO1 |
| 08:15 PST |  Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1024 mb (30.24 in) | NE 13 kph (NE 8.1 mph) | - | 10SM |
| | KCOE 051615Z AUTO 04007KT 10SM OVC100 M06/M08 A3025 RMK AO1 |
| 07:55 PST |  Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1024 mb (30.24 in) | NE 13 kph (NE 8.1 mph) | - | 10SM |
| | KCOE 051555Z AUTO 04007KT 10SM OVC100 M06/M08 A3024 RMK AO1 |
| 07:35 PST |  Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1024 mb (30.24 in) | NE 13 kph (NE 8.1 mph) | - | 10SM |
| | KCOE 051535Z AUTO 04007KT 10SM OVC100 M06/M08 A3024 RMK AO1 |
| 07:15 PST |  Overcast | -7°C / 19°F | -9°C / 16°F | 86% | 1024 mb (30.24 in) | NE 11 kph (NE 6.9 mph) | - | 10SM |
| | KCOE 051515Z AUTO 04006KT 10SM OVC100 M07/M09 A3023 RMK AO1 |
| 06:55 PST |  Overcast | -8°C / 18°F | -10°C / 14°F | 86% | 1023 mb (30.21 in) | NNE 9 kph (NNE 5.8 mph) | - | 10SM |
| | KCOE 051455Z AUTO 02005KT 10SM OVC110 M08/M10 A3022 RMK AO1 52007 |
| 06:35 PST |  Mostly Cloudy | -7°C / 19°F | -10°C / 14°F | 79% | 1023 mb (30.21 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KCOE 051435Z AUTO 36004KT 10SM BKN110 M07/M10 A3022 RMK AO1 |
| 06:15 PST |  Partly Cloudy | -7°C / 19°F | -9°C / 16°F | 86% | 1023 mb (30.21 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KCOE 051415Z AUTO 36004KT 10SM SCT120 M07/M09 A3022 RMK AO1 |
| 05:55 PST |  Overcast | -7°C / 19°F | -9°C / 16°F | 86% | 1023 mb (30.21 in) | NE 7 kph (NE 4.6 mph) | - | 10SM |
| | KCOE 051355Z AUTO 03004KT 10SM OVC120 M07/M09 A3022 RMK AO1 |
| 05:35 PST |  Overcast | -7°C / 19°F | -8°C / 18°F | 93% | 1023 mb (30.21 in) | NNE 6 kph (NNE 3.5 mph) | - | 10SM |
| | KCOE 051335Z AUTO 02003KT 10SM FEW070 OVC120 M07/M08 A3022 RMK AO1 |
| 05:15 PST |  Overcast | -7°C / 19°F | -8°C / 18°F | 93% | 1023 mb (30.21 in) | NE 11 kph (NE 6.9 mph) | - | 10SM |
| | KCOE 051315Z AUTO 03006KT 10SM BKN070 OVC110 M07/M08 A3021 RMK AO1 |
| 04:55 PST |  Overcast | -7°C / 19°F | -9°C / 16°F | 86% | 1023 mb (30.21 in) | NNE 11 kph (NNE 6.9 mph) | - | 10SM |
| | KCOE 051255Z AUTO 02006KT 10SM BKN070 OVC090 M07/M09 A3021 RMK AO1 |
| 04:35 PST |  Mostly Cloudy | -7°C / 19°F | -8°C / 18°F | 93% | 1023 mb (30.21 in) | NE 11 kph (NE 6.9 mph) | - | 10SM |
| | KCOE 051235Z AUTO 03006KT 10SM BKN070 BKN120 M07/M08 A3020 RMK AO1 |
| 04:15 PST |  Mostly Cloudy | -7°C / 19°F | -8°C / 18°F | 93% | 1023 mb (30.21 in) | E 6 kph (E 3.5 mph) | - | 10SM |
| | KCOE 051215Z AUTO 08003KT 10SM BKN120 M07/M08 A3020 RMK AO1 |
| 03:55 PST |  Overcast | -7°C / 19°F | -8°C / 18°F | 93% | 1023 mb (30.21 in) | NE 6 kph (NE 3.5 mph) | - | 10SM |
| | KCOE 051155Z AUTO 03003KT 10SM FEW065 SCT100 OVC120 M07/M08 A3020 RMK AO1 11040 21070 52014 |
| 03:35 PST |  Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1023 mb (30.21 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KCOE 051135Z AUTO 33003KT 10SM BKN100 OVC120 M06/M08 A3020 RMK AO1 |
| 03:15 PST |  Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1022 mb (30.18 in) | NNE 7 kph (NNE 4.6 mph) | - | 10SM |
| | KCOE 051115Z AUTO 02004KT 10SM OVC100 M06/M08 A3019 RMK AO1 |
| 02:55 PST |  Mostly Cloudy | -7°C / 19°F | -9°C / 16°F | 86% | 1022 mb (30.18 in) | NNE 6 kph (NNE 3.5 mph) | - | 10SM |
| | KCOE 051055Z AUTO 02003KT 10SM BKN110 M07/M09 A3019 RMK AO1 |
| 02:35 PST |  Partly Cloudy | -7°C / 19°F | -9°C / 16°F | 86% | 1022 mb (30.18 in) | NNE 6 kph (NNE 3.5 mph) | - | 10SM |
| | KCOE 051035Z AUTO 02003KT 10SM FEW060 M07/M09 A3019 RMK AO1 |
| 02:15 PST |  Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1022 mb (30.18 in) | NE 11 kph (NE 6.9 mph) | - | 10SM |
| | KCOE 051015Z AUTO 05006KT 10SM BKN060 BKN075 OVC110 M06/M08 A3018 RMK AO1 |
| 01:55 PST |  Overcast | -6°C / 21°F | -7°C / 19°F | 93% | 1022 mb (30.18 in) | NE 7 kph (NE 4.6 mph) | - | 10SM |
| | KCOE 050955Z AUTO 05004KT 10SM SCT060 OVC085 M06/M07 A3018 RMK AO1 |
| 01:35 PST |  Overcast | -6°C / 21°F | -7°C / 19°F | 93% | 1022 mb (30.18 in) | NE 7 kph (NE 4.6 mph) | - | 10SM |
| | KCOE 050935Z AUTO 05004KT 10SM FEW060 BKN090 OVC110 M06/M07 A3017 RMK AO1 |
| 01:15 PST |  Mostly Cloudy | -6°C / 21°F | -8°C / 18°F | 86% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KCOE 050915Z AUTO 10SM BKN060 M06/M08 A3017 RMK AO1 |
| 00:55 PST |  Overcast | -5°C / 23°F | -7°C / 19°F | 86% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KCOE 050855Z AUTO 00000KT 10SM BKN060 OVC070 M05/M07 A3016 RMK AO1 52017 |
| 00:35 PST |  Overcast | -6°C / 21°F | -7°C / 19°F | 93% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KCOE 050835Z AUTO 00000KT 10SM OVC070 M06/M07 A3016 RMK AO1 |
| 00:15 PST |  Overcast | -6°C / 21°F | -7°C / 19°F | 93% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KCOE 050815Z AUTO 00000KT 10SM FEW027 SCT070 OVC090 M06/M07 A3015 RMK AO1 |