| 18:53 PST |  Overcast | 2°C / 36°F | -1°C / 30°F | 81% | 1026 mb (30.3 in) | SE 11 kph (SE 6.9 mph) | - | 10SM |
| | KPUW 290253Z AUTO 12006KT 10SM OVC100 02/M01 A3031 RMK AO2 SLP285 T00221011 50004 |
| 17:53 PST |  Mostly Cloudy | 2°C / 36°F | -1°C / 30°F | 81% | 1026 mb (30.3 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KPUW 290153Z AUTO 17004KT 10SM SCT060 SCT080 BKN100 02/M01 A3031 RMK AO2 SLP287 T00171006 |
| 16:53 PST |  Overcast | 3°C / 37°F | 0°C / 32°F | 81% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KPUW 290053Z AUTO 00000KT 10SM FEW060 SCT075 OVC110 03/00 A3031 RMK AO2 SLP285 T00280000 |
| 15:53 PST |  Overcast | 4°C / 39°F | -1°C / 30°F | 70% | 1026 mb (30.3 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KPUW 282353Z AUTO 17004KT 10SM FEW060 OVC085 04/M01 A3029 RMK AO2 SLP279 T00391006 10044 20022 58001 |
| 14:53 PST |  Overcast | 4°C / 39°F | -1°C / 30°F | 70% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KPUW 282253Z AUTO 00000KT 10SM FEW060 BKN080 OVC100 04/M01 A3031 RMK AO2 SLP285 T00441006 |
| 13:53 PST |  Partly Cloudy | 4°C / 39°F | -1°C / 30°F | 70% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KPUW 282153Z AUTO 00000KT 10SM FEW100 04/M01 A3030 RMK AO2 SLP280 T00391006 |
| 12:53 PST |  Partly Cloudy | 4°C / 39°F | 0°C / 32°F | 75% | 1026 mb (30.3 in) | Variable 9 kph (Variable 5.8 mph) | - | 10SM |
| | KPUW 282053Z AUTO VRB05KT 10SM SCT018 04/00 A3030 RMK AO2 SLP279 T00390000 58008 |
| 12:37 PST |  Partly Cloudy | 4°C / 39°F | -1°C / 30°F | 70% | 1026 mb (30.3 in) | SW 11 kph (SW 6.9 mph) | - | 10SM |
| | KPUW 282037Z AUTO 21006KT 10SM SCT018 04/M01 A3030 RMK AO2 |
| 12:28 PST |  Mostly Cloudy | 4°C / 39°F | 0°C / 32°F | 75% | 1026 mb (30.3 in) | SSW 11 kph (SSW 6.9 mph) | - | 10SM |
| | KPUW 282028Z AUTO 24006KT 10SM BKN018 04/00 A3030 RMK AO2 |
| 11:53 PST |  Partly Cloudy | 4°C / 39°F | 0°C / 32°F | 75% | 1026 mb (30.3 in) | Variable 6 kph (Variable 3.5 mph) | - | 10SM |
| | KPUW 281953Z AUTO VRB03KT 10SM SCT016 04/00 A3031 RMK AO2 SLP285 T00390000 |
| 10:53 PST |  Clear | 3°C / 37°F | -1°C / 30°F | 75% | 1027 mb (30.33 in) | SSE 9 kph (SSE 5.8 mph) | - | 10SM |
| | KPUW 281853Z AUTO 16005KT 10SM CLR 03/M01 A3033 RMK AO2 SLP292 T00281006 |
| 09:53 PST |  Partly Cloudy | 3°C / 37°F | 1°C / 34°F | 87% | 1027 mb (30.33 in) | SE 11 kph (SE 6.9 mph) | - | 10SM |
| | KPUW 281753Z AUTO 13006KT 10SM FEW012 03/01 A3032 RMK AO2 SLP289 T00280006 10028 20000 53006 |
| 08:53 PST |  Clear | 1°C / 34°F | -1°C / 30°F | 87% | 1027 mb (30.33 in) | ESE 11 kph (ESE 6.9 mph) | - | 9SM |
| | KPUW 281653Z AUTO 11006KT 9SM CLR 01/M01 A3032 RMK AO2 SLP289 T00111006 |
| 07:53 PST |  Mostly Cloudy | 0°C / 32°F | -1°C / 30°F | 93% | 1026 mb (30.3 in) | ESE 11 kph (ESE 6.9 mph) | - | 8SM |
| | KPUW 281553Z AUTO 11006KT 8SM BKN037 00/M01 A3030 RMK AO2 SLP286 T00001011 |
| 07:30 PST |  Overcast | 0°C / 32°F | -1°C / 30°F | 93% | 1026 mb (30.3 in) | SE 11 kph (SE 6.9 mph) | - | 7SM |
| | KPUW 281530Z AUTO 12006KT 7SM SCT006 SCT027 OVC039 00/M01 A3030 RMK AO2 |
| 06:53 PST |  Overcast | 0°C / 32°F | -1°C / 30°F | 93% | 1026 mb (30.3 in) | ESE 7 kph (ESE 4.6 mph) | - | 7SM |
| | KPUW 281453Z AUTO 11004KT 7SM BKN006 BKN031 OVC041 00/M01 A3030 RMK AO2 SLP284 T00001006 53009 |
| 05:53 PST |  Overcast | 0°C / 32°F | -1°C / 30°F | 93% | 1026 mb (30.3 in) | SE 9 kph (SE 5.8 mph) | - | 7SM |
| | KPUW 281353Z AUTO 13005KT 7SM FEW008 OVC034 00/M01 A3029 RMK AO2 SLP278 T00001006 |
| 05:29 PST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1025 mb (30.27 in) | SSE 9 kph (SSE 5.8 mph) | - | 5SM |
| | KPUW 281329Z AUTO 15005KT 5SM BR FEW003 OVC033 00/M01 A3027 RMK AO2 |
| 05:04 PST |  Overcast Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1025 mb (30.27 in) | Calm | - | 3SM |
| | KPUW 281304Z AUTO 00000KT 3SM BR SCT003 OVC029 00/00 A3027 RMK AO2 |
| 04:53 PST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1025 mb (30.27 in) | SSE 6 kph (SSE 3.5 mph) | - | 4SM |
| | KPUW 281253Z AUTO 15003KT 4SM BR BKN001 OVC029 00/M01 A3027 RMK AO2 SLP271 T00001006 |
| 04:45 PST |  Overcast Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1025 mb (30.27 in) | SSE 6 kph (SSE 3.5 mph) | - | 2SM |
| | KPUW 281245Z AUTO 15003KT 2SM BR OVC001 00/00 A3027 RMK AO2 |
| 03:53 PST |  Overcast Fog | 0°C / 32°F | 0°C / 32°F | 100% | 1025 mb (30.27 in) | Calm | - | 1/2SM |
| | KPUW 281153Z AUTO 00000KT 1/2SM FG OVC001 00/00 A3027 RMK AO2 SLP273 70017 T00000000 10011 20000 53012 |
| 03:36 PST |  Overcast Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1025 mb (30.27 in) | Calm | - | 1SM |
| | KPUW 281136Z AUTO 00000KT 1SM BR OVC001 00/00 A3027 RMK AO2 |
| 03:28 PST |  Overcast Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1025 mb (30.27 in) | Calm | - | 3/4SM |
| | KPUW 281128Z AUTO 00000KT 3/4SM BR OVC001 00/00 A3027 RMK AO2 |
| 03:14 PST |  Overcast Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1025 mb (30.27 in) | Calm | - | 1SM |
| | KPUW 281114Z AUTO 00000KT 1SM BR OVC001 00/00 A3026 RMK AO2 |
| 02:53 PST |  Overcast Fog | 0°C / 32°F | 0°C / 32°F | 100% | 1024 mb (30.24 in) | Calm | - | 1/2SM |
| | KPUW 281053Z AUTO 00000KT 1/2SM FG OVC001 00/00 A3025 RMK AO2 SLP264 T00000000 |
| 01:53 PST |  Overcast Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1024 mb (30.24 in) | SSE 6 kph (SSE 3.5 mph) | - | 3/4SM |
| | KPUW 280953Z AUTO 20003KT 3/4SM BR OVC001 01/01 A3024 RMK AO2 SLP263 T00060006 |
| 01:42 PST |  Overcast Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1024 mb (30.24 in) | Calm | - | 1SM |
| | KPUW 280942Z AUTO 00000KT 1SM BR OVC001 01/01 A3025 RMK AO2 |
| 01:32 PST |  Overcast Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1024 mb (30.24 in) | Calm | - | 3/4SM |
| | KPUW 280932Z AUTO 00000KT 3/4SM BR OVC001 01/01 A3024 RMK AO2 |
| 01:18 PST |  Overcast Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1024 mb (30.24 in) | Calm | - | 1SM |
| | KPUW 280918Z AUTO 00000KT 1SM BR OVC001 01/01 A3025 RMK AO2 |
| 00:53 PST |  Overcast Fog | 1°C / 34°F | 1°C / 34°F | 100% | 1024 mb (30.24 in) | Calm | - | 1/2SM |
| | KPUW 280853Z AUTO 00000KT 1/2SM FG OVC001 01/01 A3024 RMK AO2 SLP261 T00110006 51009 |
| 00:37 PST |  Overcast Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1024 mb (30.24 in) | NW 6 kph (NW 3.5 mph) | - | 3/4SM |
| | KPUW 280837Z AUTO 30003KT 3/4SM BR OVC001 01/01 A3024 RMK AO2 |
| 00:19 PST |  Overcast Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1024 mb (30.24 in) | W 6 kph (W 3.5 mph) | - | 1SM |
| | KPUW 280819Z AUTO 28003KT 1SM BR OVC001 01/01 A3024 RMK AO2 |