| 20:53 PST |  Overcast | -3°C / 27°F | -11°C / 12°F | 54% | 1020 mb (30.12 in) | NE 28 kph (NE 17.3 mph) | - | 10SM |
| | KPUW 060453Z AUTO 05015KT 10SM BKN070 OVC090 M03/M11 A3013 RMK AO2 SLP237 T10331106 |
| 19:53 PST |  Clear | -5°C / 23°F | -7°C / 19°F | 86% | 1020 mb (30.12 in) | ENE 7 kph (ENE 4.6 mph) | - | 8SM |
| | KPUW 060353Z AUTO 07004KT 8SM CLR M05/M07 A3013 RMK AO2 SLP236 T10501072 |
| 18:53 PST |  Clear Fog And Mist | -6°C / 21°F | -8°C / 18°F | 86% | 1021 mb (30.15 in) | ENE 6 kph (ENE 3.5 mph) | - | 6SM |
| | KPUW 060253Z AUTO 07003KT 6SM BR CLR M06/M08 A3014 RMK AO2 SLP240 T10611078 56009 |
| 17:53 PST |  Clear Fog And Mist | -6°C / 21°F | -8°C / 18°F | 86% | 1021 mb (30.15 in) | Calm | - | 6SM |
| | KPUW 060153Z AUTO 00000KT 6SM BR CLR M06/M08 A3014 RMK AO2 SLP241 T10611078 |
| 16:53 PST |  Partly Cloudy Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1021 mb (30.15 in) | Calm | - | 6SM |
| | KPUW 060053Z AUTO 00000KT 6SM BR FEW008 M06/M07 A3015 RMK AO2 SLP246 T10561067 |
| 16:41 PST |  Partly Cloudy | -6°C / 21°F | -7°C / 19°F | 93% | 1021 mb (30.15 in) | SW 6 kph (SW 3.5 mph) | - | 7SM |
| | KPUW 060041Z AUTO 22003KT 7SM SCT008 M06/M07 A3016 RMK AO2 |
| 15:53 PST |  Mostly Cloudy | -4°C / 25°F | -6°C / 21°F | 86% | 1022 mb (30.18 in) | W 11 kph (W 6.9 mph) | - | 7SM |
| | KPUW 052353Z AUTO 28006KT 7SM BKN055 M04/M06 A3017 RMK AO2 SLP250 T10441061 11028 21056 58006 |
| 15:11 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1022 mb (30.18 in) | W 13 kph (W 8.1 mph) | - | 8SM |
| | KPUW 052311Z AUTO 28007KT 8SM SCT011 OVC065 M04/M06 A3017 RMK AO2 |
| 14:53 PST |  Overcast | -3°C / 27°F | -6°C / 21°F | 80% | 1022 mb (30.18 in) | W 6 kph (W 3.5 mph) | - | 8SM |
| | KPUW 052253Z AUTO 27003KT 8SM BKN011 BKN046 OVC060 M03/M06 A3018 RMK AO2 SLP253 T10331061 |
| 14:50 PST |  Mostly Cloudy | -3°C / 27°F | -6°C / 21°F | 80% | 1022 mb (30.18 in) | SSW 11 kph (SSW 6.9 mph) | - | 9SM |
| | KPUW 052250Z AUTO 25006KT 9SM BKN011 BKN046 BKN060 M03/M06 A3018 RMK AO2 |
| 14:15 PST |  Partly Cloudy | -3°C / 27°F | -6°C / 21°F | 80% | 1022 mb (30.18 in) | Calm | - | 9SM |
| | KPUW 052215Z AUTO 00000KT 9SM SCT011 M03/M06 A3018 RMK AO2 |
| 14:04 PST |  Mostly Cloudy | -3°C / 27°F | -6°C / 21°F | 80% | 1022 mb (30.18 in) | NNW 6 kph (NNW 3.5 mph) | - | 9SM |
| | KPUW 052204Z AUTO 34003KT 9SM BKN011 M03/M06 A3018 RMK AO2 |
| 13:53 PST |  Partly Cloudy | -4°C / 25°F | -6°C / 21°F | 86% | 1022 mb (30.18 in) | Calm | - | 9SM |
| | KPUW 052153Z AUTO 00000KT 9SM SCT011 M04/M06 A3018 RMK AO2 SLP255 T10391061 |
| 13:20 PST |  Mostly Cloudy | -3°C / 27°F | -6°C / 21°F | 80% | 1022 mb (30.18 in) | NNE 15 kph (NNE 9.2 mph) | - | 9SM |
| | KPUW 052120Z AUTO 02008KT 9SM SCT010 BKN050 M03/M06 A3019 RMK AO2 |
| 12:53 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1023 mb (30.21 in) | NW 13 kph (NW 8.1 mph) | - | 7SM |
| | KPUW 052053Z AUTO 32007KT 7SM OVC010 M04/M06 A3020 RMK AO2 CIG 008V015 SLP262 T10391061 56013 |
| 12:45 PST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1023 mb (30.21 in) | NW 13 kph (NW 8.1 mph) | - | 7SM |
| | KPUW 052045Z AUTO 31007KT 7SM OVC010 M04/M06 A3021 RMK AO2 CIG 008V014 |
| 11:53 PST |  Overcast Fog And Mist | -4°C / 25°F | -6°C / 21°F | 86% | 1023 mb (30.21 in) | NW 7 kph (NW 4.6 mph) | - | 6SM |
| | KPUW 051953Z AUTO 32004KT 6SM BR OVC008 M04/M06 A3021 RMK AO2 SLP267 T10441061 |
| 10:53 PST |  Overcast Fog And Mist | -5°C / 23°F | -6°C / 21°F | 93% | 1024 mb (30.24 in) | NNW 9 kph (NNW 5.8 mph) | - | 5SM |
| | KPUW 051853Z AUTO 33005KT 5SM BR OVC006 M05/M06 A3023 RMK AO2 SLP272 T10501061 |
| 10:10 PST |  Overcast Fog And Mist | -5°C / 23°F | -6°C / 21°F | 93% | 1024 mb (30.24 in) | NNW 6 kph (NNW 3.5 mph) | - | 5SM |
| | KPUW 051810Z AUTO 33003KT 5SM BR OVC006 M05/M06 A3024 RMK AO2 CIG 004V007 |
| 09:53 PST |  Overcast Fog And Mist | -5°C / 23°F | -6°C / 21°F | 93% | 1024 mb (30.24 in) | NW 9 kph (NW 5.8 mph) | - | 4SM |
| | KPUW 051753Z AUTO 30005KT 4SM BR OVC004 M05/M06 A3024 RMK AO2 SLP277 T10501061 11050 21056 51013 |
| 08:53 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1024 mb (30.24 in) | W 13 kph (W 8.1 mph) | - | 4SM |
| | KPUW 051653Z AUTO 28007KT 4SM BR OVC004 M06/M07 A3024 RMK AO2 SLP275 T10561067 |
| 08:44 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1024 mb (30.24 in) | WNW 7 kph (WNW 4.6 mph) | - | 4SM |
| | KPUW 051644Z AUTO 29004KT 4SM BR OVC004 M06/M07 A3023 RMK AO2 |
| 07:53 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1023 mb (30.21 in) | W 6 kph (W 3.5 mph) | - | 4SM |
| | KPUW 051553Z AUTO 27003KT 4SM BR OVC006 M06/M07 A3022 RMK AO2 SLP269 T10561067 |
| 07:10 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1023 mb (30.21 in) | Calm | - | 6SM |
| | KPUW 051510Z AUTO 00000KT 6SM BR BKN006 OVC018 M06/M07 A3021 RMK AO2 |
| 06:53 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1023 mb (30.21 in) | NW 7 kph (NW 4.6 mph) | - | 6SM |
| | KPUW 051453Z AUTO 30004KT 6SM BR FEW004 OVC018 M06/M07 A3020 RMK AO2 SLP264 T10561067 53005 |
| 06:42 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1023 mb (30.21 in) | W 7 kph (W 4.6 mph) | - | 6SM |
| | KPUW 051442Z AUTO 28004KT 6SM BR SCT004 OVC018 M06/M07 A3020 RMK AO2 |
| 06:12 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1023 mb (30.21 in) | W 9 kph (W 5.8 mph) | - | 5SM |
| | KPUW 051412Z AUTO 27005KT 5SM BR BKN004 OVC013 M06/M07 A3020 RMK AO2 |
| 06:02 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1023 mb (30.21 in) | W 11 kph (W 6.9 mph) | - | 5SM |
| | KPUW 051402Z AUTO 28006KT 5SM BR SCT004 OVC013 M06/M07 A3020 RMK AO2 |
| 05:53 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1023 mb (30.21 in) | WNW 11 kph (WNW 6.9 mph) | - | 5SM |
| | KPUW 051353Z AUTO 29006KT 5SM BR BKN004 OVC014 M06/M07 A3020 RMK AO2 SLP262 T10561067 |
| 04:53 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1022 mb (30.18 in) | WNW 9 kph (WNW 5.8 mph) | - | 5SM |
| | KPUW 051253Z AUTO 29005KT 5SM BR OVC004 M06/M07 A3019 RMK AO2 SLP259 T10561067 |
| 03:53 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1022 mb (30.18 in) | WNW 6 kph (WNW 3.5 mph) | - | 4SM |
| | KPUW 051153Z AUTO 29003KT 4SM BR OVC004 M06/M07 A3019 RMK AO2 SLP259 60000 T10561067 11056 21056 51012 |
| 02:53 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1022 mb (30.18 in) | Variable 6 kph (Variable 3.5 mph) | - | 4SM |
| | KPUW 051053Z AUTO VRB03KT 4SM BR OVC004 M06/M07 A3018 RMK AO2 SLP257 T10561067 |
| 01:53 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1022 mb (30.18 in) | NW 11 kph (NW 6.9 mph) | - | 4SM |
| | KPUW 050953Z AUTO 30006KT 4SM BR OVC004 M06/M07 A3017 RMK AO2 CIG 002V007 SLP251 T10561067 |
| 00:53 PST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1021 mb (30.15 in) | NW 15 kph (NW 9.2 mph) | - | 4SM |
| | KPUW 050853Z AUTO 31008KT 4SM BR OVC004 M06/M07 A3015 RMK AO2 SLP246 60000 T10561067 53008 |