| 22:55 PST |  Clear | -4°C / 25°F | -8°C / 18°F | 74% | 1032 mb (30.48 in) | Calm | - | 10SM |
| | KEAT 240655Z AUTO 00000KT 10SM CLR M04/M08 A3047 RMK AO2 SLP336 T10391078 |
| 21:55 PST |  Clear | -4°C / 25°F | -7°C / 19°F | 80% | 1031 mb (30.45 in) | Calm | - | 10SM |
| | KEAT 240555Z AUTO 00000KT 10SM CLR M04/M07 A3046 RMK AO2 SLP331 T10391072 11006 21044 50001 |
| 20:55 PST |  Clear | -3°C / 27°F | -7°C / 19°F | 74% | 1031 mb (30.45 in) | E 6 kph (E 3.5 mph) | - | 10SM |
| | KEAT 240455Z AUTO 09003KT 10SM CLR M03/M07 A3046 RMK AO2 SLP333 T10331067 |
| 19:55 PST |  Clear | -2°C / 28°F | -8°C / 18°F | 64% | 1031 mb (30.45 in) | Calm | - | 10SM |
| | KEAT 240355Z AUTO 00000KT 10SM CLR M02/M08 A3046 RMK AO2 SLP331 T10221078 |
| 18:55 PST |  Clear | -2°C / 28°F | -8°C / 18°F | 64% | 1031 mb (30.45 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KEAT 240255Z AUTO 12003KT 10SM CLR M02/M08 A3046 RMK AO2 SLP330 T10171078 53009 |
| 17:55 PST |  Clear | -2°C / 28°F | -5°C / 23°F | 80% | 1031 mb (30.45 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KEAT 240155Z AUTO 06003KT 10SM CLR M02/M05 A3044 RMK AO2 SLP325 T10221050 |
| 16:55 PST |  Clear | -1°C / 30°F | -5°C / 23°F | 75% | 1031 mb (30.45 in) | Calm | - | 10SM |
| | KEAT 240055Z AUTO 00000KT 10SM CLR M01/M05 A3044 RMK AO2 SLP323 T10111050 |
| 15:55 PST |  Partly Cloudy | -1°C / 30°F | -5°C / 23°F | 75% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KEAT 232355Z AUTO 00000KT 10SM FEW120 M01/M05 A3043 RMK AO2 SLP321 T10111050 10000 21033 50004 |
| 14:55 PST |  Mostly Cloudy | -1°C / 30°F | -4°C / 25°F | 80% | 1031 mb (30.45 in) | Calm | - | 10SM |
| | KEAT 232255Z AUTO 00000KT 10SM BKN110 M01/M04 A3044 RMK AO2 SLP323 T10061044 |
| 13:55 PST |  Mostly Cloudy | -1°C / 30°F | -4°C / 25°F | 80% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KEAT 232155Z AUTO 00000KT 10SM BKN100 M01/M04 A3041 RMK AO2 SLP313 T10111044 |
| 12:55 PST |  Clear | -1°C / 30°F | -5°C / 23°F | 75% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KEAT 232055Z AUTO 00000KT 10SM CLR M01/M05 A3042 RMK AO2 SLP315 T10111050 56006 |
| 11:55 PST |  Clear | -2°C / 28°F | -5°C / 23°F | 80% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KEAT 231955Z AUTO 00000KT 10SM CLR M02/M05 A3042 RMK AO2 SLP317 T10221050 |
| 10:55 PST |  Clear | -3°C / 27°F | -5°C / 23°F | 86% | 1030 mb (30.42 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KEAT 231855Z AUTO 25004KT 10SM CLR M03/M05 A3043 RMK AO2 SLP320 T10281050 |
| 09:55 PST |  Clear | -3°C / 27°F | -6°C / 21°F | 80% | 1031 mb (30.45 in) | Calm | - | 10SM |
| | KEAT 231755Z AUTO 00000KT 10SM CLR M03/M06 A3044 RMK AO2 SLP322 T10331056 11033 21061 53015 |
| 08:55 PST |  Clear | -3°C / 27°F | -6°C / 21°F | 80% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KEAT 231655Z AUTO 00000KT 10SM CLR M03/M06 A3042 RMK AO2 SLP315 T10331056 |
| 07:55 PST |  Clear | -5°C / 23°F | -7°C / 19°F | 86% | 1029 mb (30.39 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KEAT 231555Z AUTO 33003KT 10SM CLR M05/M07 A3040 RMK AO2 SLP311 T10501067 |
| 06:55 PST |  Clear | -5°C / 23°F | -7°C / 19°F | 86% | 1029 mb (30.39 in) | E 6 kph (E 3.5 mph) | - | 10SM |
| | KEAT 231455Z AUTO 08003KT 10SM CLR M05/M07 A3039 RMK AO2 SLP306 T10501072 51020 |
| 05:55 PST |  Clear | -5°C / 23°F | -7°C / 19°F | 86% | 1028 mb (30.36 in) | NE 6 kph (NE 3.5 mph) | - | 10SM |
| | KEAT 231355Z AUTO 03003KT 10SM CLR M05/M07 A3037 RMK AO2 SLP297 T10501067 |
| 04:55 PST |  Clear | -4°C / 25°F | -6°C / 21°F | 86% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KEAT 231255Z AUTO 00000KT 10SM CLR M04/M06 A3035 RMK AO2 SLP293 T10391056 |
| 03:55 PST |  Clear | -4°C / 25°F | -6°C / 21°F | 86% | 1027 mb (30.33 in) | ENE 9 kph (ENE 5.8 mph) | - | 10SM |
| | KEAT 231155Z AUTO 07005KT 10SM CLR M04/M06 A3033 RMK AO2 SLP283 T10441061 11011 21050 53019 |
| 02:55 PST |  Clear | -4°C / 25°F | -6°C / 21°F | 86% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KEAT 231055Z AUTO 00000KT 10SM CLR M04/M06 A3031 RMK AO2 SLP274 T10391061 |
| 01:55 PST |  Clear | -3°C / 27°F | -6°C / 21°F | 80% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KEAT 230955Z AUTO 00000KT 10SM CLR M03/M06 A3029 RMK AO2 SLP269 T10331056 |
| 00:55 PST |  Clear | -3°C / 27°F | -6°C / 21°F | 80% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KEAT 230855Z AUTO 00000KT 10SM CLR M03/M06 A3027 RMK AO2 SLP262 T10331056 51017 |