| 20:17 PST |  Partly Cloudy Fog | 2°C / 36°F | 2°C / 36°F | 100% | 1026 mb (30.3 in) | Calm | - | 1/2SM |
| | KSHN 280417Z AUTO 00000KT 1/2SM FG FEW001 SCT030 02/02 A3031 RMK AO2 FZRANO |
| 20:01 PST |  Mostly Cloudy Fog And Mist | 3°C / 37°F | 3°C / 37°F | 100% | 1026 mb (30.3 in) | Calm | - | 1 3/4SM |
| | KSHN 280401Z AUTO 00000KT 1 3/4SM BR BKN030 03/03 A3031 RMK AO2 |
| 19:53 PST |  Mostly Cloudy | 4°C / 39°F | 4°C / 39°F | 100% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KSHN 280353Z AUTO 00000KT 10SM BKN030 04/04 A3031 RMK AO2 SLP267 T00390039 |
| 18:53 PST |  Partly Cloudy | 5°C / 41°F | 4°C / 39°F | 93% | 1026 mb (30.3 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KSHN 280253Z AUTO 14004KT 10SM SCT039 05/04 A3029 RMK AO2 SLP260 T00500044 50009 |
| 17:53 PST |  Overcast | 7°C / 45°F | 5°C / 41°F | 87% | 1026 mb (30.3 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KSHN 280153Z AUTO 15003KT 10SM OVC037 07/05 A3029 RMK AO2 SLP261 T00670050 |
| 16:53 PST |  Overcast | 7°C / 45°F | 4°C / 39°F | 81% | 1025 mb (30.27 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KSHN 280053Z AUTO 13004KT 10SM OVC039 07/04 A3027 RMK AO2 SLP256 T00720044 |
| 16:40 PST |  Overcast | 7°C / 45°F | 4°C / 39°F | 81% | 1025 mb (30.27 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KSHN 280040Z AUTO 13004KT 10SM FEW020 SCT026 OVC039 07/04 A3027 RMK AO2 |
| 16:04 PST |  Overcast | 8°C / 46°F | 5°C / 41°F | 82% | 1025 mb (30.27 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KSHN 280004Z AUTO 13004KT 10SM SCT020 BKN029 OVC035 08/05 A3026 RMK AO2 |
| 15:53 PST |  Overcast | 8°C / 46°F | 5°C / 41°F | 82% | 1025 mb (30.27 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KSHN 272353Z AUTO 14004KT 10SM FEW025 OVC035 08/05 A3026 RMK AO2 SLP251 T00780050 10083 20061 53016 |
| 14:53 PST |  Mostly Cloudy | 8°C / 46°F | 5°C / 41°F | 82% | 1024 mb (30.24 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KSHN 272253Z AUTO 13003KT 10SM BKN037 08/05 A3024 RMK AO2 SLP245 T00830050 |
| 13:53 PST |  Overcast | 8°C / 46°F | 4°C / 39°F | 76% | 1024 mb (30.24 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KSHN 272153Z AUTO 13004KT 10SM OVC037 08/04 A3023 RMK AO2 SLP240 T00780044 |
| 12:53 PST |  Overcast | 8°C / 46°F | 4°C / 39°F | 76% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KSHN 272053Z AUTO 00000KT 10SM OVC035 08/04 A3021 RMK AO2 SLP234 T00780044 51015 |
| 11:53 PST |  Overcast | 7°C / 45°F | 4°C / 39°F | 81% | 1023 mb (30.21 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KSHN 271953Z AUTO 14003KT 10SM OVC033 07/04 A3020 RMK AO2 SLP231 T00670039 |
| 10:53 PST |  Overcast | 7°C / 45°F | 4°C / 39°F | 81% | 1022 mb (30.18 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KSHN 271853Z AUTO 16003KT 10SM OVC035 07/04 A3019 RMK AO2 SLP227 T00670044 |
| 09:53 PST |  Mostly Cloudy | 6°C / 43°F | 4°C / 39°F | 87% | 1022 mb (30.18 in) | SSE 7 kph (SSE 4.6 mph) | - | 10SM |
| | KSHN 271753Z AUTO 15004KT 10SM BKN035 06/04 A3017 RMK AO2 SLP219 T00610044 10061 20044 51033 |
| 09:19 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSHN 271719Z AUTO 00000KT 10SM SCT004 OVC033 06/05 A3016 RMK AO2 |
| 08:53 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1021 mb (30.15 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KSHN 271653Z AUTO 18003KT 10SM BKN004 OVC033 06/05 A3014 RMK AO2 SLP210 T00560050 |
| 08:18 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KSHN 271618Z AUTO 00000KT 10SM FEW002 OVC031 06/05 A3012 RMK AO2 |
| 07:53 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KSHN 271553Z AUTO 00000KT 10SM OVC031 06/05 A3010 RMK AO2 SLP196 T00560050 |
| 07:13 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KSHN 271513Z AUTO 00000KT 10SM FEW026 OVC031 06/05 A3008 RMK AO2 |
| 06:53 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KSHN 271453Z AUTO 00000KT 10SM BKN026 OVC033 06/05 A3007 RMK AO2 SLP186 T00560050 53031 |
| 06:11 PST |  Overcast Fog And Mist | 5°C / 41°F | 5°C / 41°F | 100% | 1017 mb (30.03 in) | Calm | - | 3SM |
| | KSHN 271411Z AUTO 00000KT 3SM BR FEW001 OVC025 05/05 A3004 RMK AO2 |
| 06:00 PST |  Overcast Fog And Mist | 5°C / 41°F | 4°C / 39°F | 93% | 1017 mb (30.03 in) | Calm | - | 1 1/2SM |
| | KSHN 271400Z AUTO 00000KT 1 1/2SM BR FEW001 BKN025 OVC032 05/04 A3004 RMK AO2 |
| 05:53 PST |  Overcast Fog And Mist | 5°C / 41°F | 4°C / 39°F | 93% | 1017 mb (30.03 in) | Calm | - | 1 1/2SM |
| | KSHN 271353Z AUTO 00000KT 1 1/2SM BR FEW001 SCT025 OVC032 05/04 A3004 RMK AO2 SLP175 T00500044 |
| 05:43 PST |  Overcast Fog And Mist | 4°C / 39°F | 4°C / 39°F | 100% | 1017 mb (30.03 in) | Calm | - | 3/4SM |
| | KSHN 271343Z AUTO 00000KT 3/4SM BR FEW001 OVC032 04/04 A3002 RMK AO2 |
| 05:29 PST |  Mostly Cloudy Fog And Mist | 5°C / 41°F | 4°C / 39°F | 93% | 1017 mb (30.03 in) | Calm | - | 1 3/4SM |
| | KSHN 271329Z AUTO 00000KT 1 3/4SM BR BKN032 05/04 A3002 RMK AO2 VIS 3/4V5 |
| 05:16 PST |  Mostly Cloudy | 6°C / 43°F | 5°C / 41°F | 93% | 1016 mb (30 in) | Calm | - | 10SM |
| | KSHN 271316Z AUTO 00000KT 10SM BKN032 06/05 A3001 RMK AO2 |
| 04:53 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1016 mb (30 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KSHN 271253Z AUTO 34003KT 10SM OVC029 06/05 A3001 RMK AO2 SLP166 T00560050 |
| 03:53 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1015 mb (29.97 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KSHN 271153Z AUTO 07003KT 10SM OVC025 06/05 A2998 RMK AO2 SLP155 60000 70062 T00560050 10067 20044 52007 |
| 02:53 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KSHN 271053Z AUTO 00000KT 10SM OVC023 06/05 A2998 RMK AO2 SLP154 T00560050 |
| 01:53 PST |  Overcast | 5°C / 41°F | 5°C / 41°F | 100% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KSHN 270953Z AUTO 00000KT 10SM BKN027 OVC100 05/05 A2996 RMK AO2 SLP149 T00500050 |
| 01:51 PST |  Overcast | 5°C / 41°F | 5°C / 41°F | 100% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KSHN 270951Z AUTO 00000KT 10SM BKN027 OVC100 05/05 A2996 RMK AO2 |
| 00:53 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1014 mb (29.94 in) | SSW 9 kph (SSW 5.8 mph) | - | 10SM |
| | KSHN 270853Z AUTO 25005KT 10SM FEW025 OVC080 06/05 A2994 RMK AO2 SLP144 60000 T00560050 53011 |