| 06:09 PST |  Overcast | -3°C / 27°F | -4°C / 25°F | 93% | 1025 mb (30.27 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KDEW 281409Z AUTO 17004KT 10SM OVC003 M03/M04 A3027 RMK AO2 CIG 002V007 |
| 05:53 PST |  Overcast | -3°C / 27°F | -4°C / 25°F | 93% | 1025 mb (30.27 in) | SSE 9 kph (SSE 5.8 mph) | - | 10SM |
| | KDEW 281353Z AUTO 16005KT 10SM BKN005 OVC033 M03/M04 A3027 RMK AO2 CIG 003V007 SLP274 T10331039 |
| 05:48 PST |  Overcast | -3°C / 27°F | -4°C / 25°F | 93% | 1025 mb (30.27 in) | SSE 7 kph (SSE 4.6 mph) | - | 10SM |
| | KDEW 281348Z AUTO 16004KT 10SM SCT005 OVC033 M03/M04 A3026 RMK AO2 |
| 04:53 PST |  Mostly Cloudy | -6°C / 21°F | -6°C / 21°F | 100% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KDEW 281253Z AUTO 00000KT 10SM BKN035 M06/M06 A3025 RMK AO2 SLP268 T10561061 |
| 03:53 PST |  Clear | -7°C / 19°F | -7°C / 19°F | 100% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KDEW 281153Z AUTO 00000KT 10SM CLR M07/M07 A3025 RMK AO2 SLP268 70010 T10671072 11033 21072 53012 |
| 02:53 PST |  Clear | -7°C / 19°F | -8°C / 18°F | 93% | 1024 mb (30.24 in) | NE 7 kph (NE 4.6 mph) | - | 10SM |
| | KDEW 281053Z AUTO 05004KT 10SM CLR M07/M08 A3023 RMK AO2 SLP259 T10671078 |
| 01:53 PST |  Clear | -7°C / 19°F | -7°C / 19°F | 100% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KDEW 280953Z AUTO 00000KT 10SM CLR M07/M07 A3022 RMK AO2 SLP255 T10671072 |
| 00:53 PST |  Clear | -6°C / 21°F | -7°C / 19°F | 93% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KDEW 280853Z AUTO 00000KT 10SM CLR M06/M07 A3021 RMK AO2 SLP252 T10611067 50010 |