| 18:03 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KLWS 050203Z 24003KT 10SM OVC006 M03/M06 A3012 RMK AO2 CIG 004V009 |
| 17:56 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KLWS 050156Z 26004KT 10SM SCT003 OVC010 M03/M06 A3012 RMK AO2 SLP220 T10281061 |
| 17:15 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | SW 6 kph (SW 3.5 mph) | - | 10SM |
| | KLWS 050115Z 21003KT 10SM SCT003 OVC010 M03/M06 A3012 RMK AO2 |
| 16:56 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | SW 6 kph (SW 3.5 mph) | - | 10SM |
| | KLWS 050056Z 23003KT 10SM OVC003 M03/M06 A3012 RMK AO2 SLP219 T10281056 |
| 16:03 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | Calm | - | 8SM |
| | KLWS 050003Z 00000KT 8SM OVC003 M03/M06 A3012 RMK AO2 |
| 15:56 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | Calm | - | 8SM |
| | KLWS 042356Z 00000KT 8SM SCT008 OVC010 M03/M06 A3012 RMK AO2 SLP219 T10281056 11028 21039 55002 |
| 15:11 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KLWS 042311Z 00000KT 10SM SCT008 OVC010 M03/M06 A3011 RMK AO2 |
| 15:03 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KLWS 042303Z 00000KT 10SM OVC002 M03/M06 A3011 RMK AO2 |
| 14:56 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | SSE 6 kph (SSE 3.5 mph) | - | 9SM |
| | KLWS 042256Z 16003KT 9SM SCT008 OVC010 M03/M06 A3011 RMK AO2 SLP214 T10281056 |
| 14:14 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KLWS 042214Z 00000KT 10SM SCT008 OVC010 M03/M06 A3011 RMK AO2 |
| 13:56 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KLWS 042156Z 00000KT 10SM OVC002 M03/M06 A3011 RMK AO2 SLP217 T10281056 |
| 13:03 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | Calm | - | 9SM |
| | KLWS 042103Z 00000KT 9SM OVC002 M03/M06 A3012 RMK AO2 |
| 12:56 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | Calm | - | 9SM |
| | KLWS 042056Z 00000KT 9SM SCT002 SCT004 OVC010 M03/M06 A3013 RMK AO2 SLP221 T10281056 58002 |
| 12:03 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | NW 6 kph (NW 3.5 mph) | - | 9SM |
| | KLWS 042003Z 31003KT 9SM SCT002 SCT004 OVC010 M03/M06 A3013 RMK AO2 |
| 11:56 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | NW 9 kph (NW 5.8 mph) | - | 10SM |
| | KLWS 041956Z 32005KT 10SM SCT002 SCT004 OVC017 M03/M06 A3013 RMK AO2 SLP222 T10331056 |
| 11:25 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1020 mb (30.12 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KLWS 041925Z 26004KT 10SM SCT002 SCT004 OVC017 M03/M06 A3013 RMK AO2 |
| 10:56 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KLWS 041856Z 00000KT 10SM SCT002 SCT004 OVC010 M03/M06 A3014 RMK AO2 SLP223 T10331056 |
| 10:29 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KLWS 041829Z 00000KT 10SM SCT002 SCT004 OVC010 M03/M06 A3014 RMK AO2 |
| 09:56 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1020 mb (30.12 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KLWS 041756Z 16003KT 10SM SCT002 BKN004 OVC010 M04/M06 A3013 RMK AO2 SLP222 T10391061 11039 21078 58002 |
| 09:19 PST |  Overcast | -4°C / 25°F | -7°C / 19°F | 80% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KLWS 041719Z 00000KT 10SM OVC004 M04/M07 A3014 RMK AO2 |
| 09:03 PST |  Overcast | -4°C / 25°F | -7°C / 19°F | 80% | 1021 mb (30.15 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KLWS 041703Z 26003KT 10SM BKN006 BKN012 OVC080 M04/M07 A3015 RMK AO2 |
| 08:56 PST |  Overcast | -4°C / 25°F | -7°C / 19°F | 80% | 1021 mb (30.15 in) | SW 11 kph (SW 6.9 mph) | - | 10SM |
| | KLWS 041656Z 22006KT 10SM SCT008 BKN012 OVC080 M04/M07 A3014 RMK AO2 SLP225 T10441072 |
| 07:56 PST |  Clear | -6°C / 21°F | -8°C / 18°F | 86% | 1021 mb (30.15 in) | SSW 11 kph (SSW 6.9 mph) | - | 10SM |
| | KLWS 041556Z 24006KT 10SM CLR M06/M08 A3014 RMK AO2 SLP225 T10611078 |
| 06:56 PST |  Clear | -7°C / 19°F | -9°C / 16°F | 86% | 1020 mb (30.12 in) | W 9 kph (W 5.8 mph) | - | 10SM |
| | KLWS 041456Z 27005KT 10SM CLR M07/M09 A3011 RMK AO2 SLP215 T10721094 56014 |
| 05:56 PST |  Partly Cloudy | -7°C / 19°F | -9°C / 16°F | 86% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KLWS 041356Z AUTO 00000KT 10SM SCT080 M07/M09 A3011 RMK AO2 SLP215 T10671089 |
| 04:56 PST |  Clear | -6°C / 21°F | -8°C / 18°F | 86% | 1021 mb (30.15 in) | WNW 6 kph (WNW 3.5 mph) | - | 10SM |
| | KLWS 041256Z AUTO 29003KT 10SM CLR M06/M08 A3014 RMK AO2 SLP225 T10611078 |
| 03:56 PST |  Clear | -6°C / 21°F | -8°C / 18°F | 86% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KLWS 041156Z AUTO 00000KT 10SM CLR M06/M08 A3015 RMK AO2 SLP229 T10611083 11028 21067 58017 |
| 02:56 PST |  Clear | -6°C / 21°F | -8°C / 18°F | 86% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KLWS 041056Z AUTO 00000KT 10SM CLR M06/M08 A3017 RMK AO2 SLP235 T10561078 |
| 01:56 PST |  Clear | -5°C / 23°F | -7°C / 19°F | 86% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KLWS 040956Z AUTO 00000KT 10SM CLR M05/M07 A3019 RMK AO2 SLP241 T10501072 |
| 00:56 PST |  Clear | -6°C / 21°F | -8°C / 18°F | 86% | 1023 mb (30.21 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KLWS 040856Z AUTO 28003KT 10SM CLR M06/M08 A3021 RMK AO2 SLP246 T10561078 56020 |