| 08:11 EST |  Overcast Snow | -3°C / 27°F | -5°C / 23°F | 86% | 1020 mb (30.12 in) | NE 22 kph (NE 13.8 mph) | 0.51 mm (0.02 in) | 1/4SM |
| | KPWM 091311Z 04012KT 1/4SM SN FZFG OVC008 M03/M05 A3012 RMK AO2 CIG 007V011 PRESFR P0002 |
| 07:51 EST |  Overcast Snow | -3°C / 27°F | -6°C / 21°F | 80% | 1021 mb (30.15 in) | NE 13 kph (NE 8.1 mph) | 0.25 mm (0.01 in) | 1/2SM |
| | KPWM 091251Z 04007KT 1/2SM SN FZFG BKN012 OVC020 M03/M06 A3015 RMK AO2 SNB1153 SLP209 P0001 T10331056 |
| 07:48 EST |  Overcast Snow | -3°C / 27°F | -6°C / 21°F | 80% | 1021 mb (30.15 in) | NE 15 kph (NE 9.2 mph) | 0.25 mm (0.01 in) | 1/2SM |
| | KPWM 091248Z 04008KT 1/2SM SN FZFG BKN014 OVC020 M03/M06 A3015 RMK AO2 SNB1153 P0001 |
| 07:20 EST |  Overcast Light Snow | -3°C / 27°F | -7°C / 19°F | 74% | 1022 mb (30.18 in) | NNE 15 kph (NNE 9.2 mph) | 0.00 mm (0.00 in) | 1SM |
| | KPWM 091220Z 02008KT 1SM -SN FEW009 OVC025 M03/M07 A3018 RMK AO2 SNB1153 P0000 |
| 06:51 EST |  Overcast | -2°C / 28°F | -6°C / 21°F | 74% | 1022 mb (30.18 in) | NE 26 kph (NE 16.1 mph) | - | 10SM |
| | KPWM 091151Z 05014KT 10SM OVC025 M02/M06 A3019 RMK AO2 SLP224 T10171061 11017 21044 56033 |
| 05:51 EST |  Overcast | -2°C / 28°F | -8°C / 18°F | 64% | 1024 mb (30.24 in) | NE 19 kph (NE 11.5 mph) | - | 10SM |
| | KPWM 091051Z 05010KT 10SM BKN027 BKN032 OVC100 M02/M08 A3023 RMK AO2 SLP237 T10171078 |
| 04:51 EST |  Mostly Cloudy | -2°C / 28°F | -7°C / 19°F | 69% | 1024 mb (30.24 in) | ENE 20 kph (ENE 12.7 mph) | - | 10SM |
| | KPWM 090951Z 06011KT 10SM FEW040 BKN110 M02/M07 A3023 RMK AO2 SLP237 T10221072 |
| 03:51 EST |  Clear | -2°C / 28°F | -8°C / 18°F | 64% | 1025 mb (30.27 in) | ENE 17 kph (ENE 10.4 mph) | - | 10SM |
| | KPWM 090851Z AUTO 06009KT 10SM CLR M02/M08 A3028 RMK AO2 SLP256 T10221083 58021 |
| 02:51 EST |  Clear | -4°C / 25°F | -9°C / 16°F | 69% | 1026 mb (30.3 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KPWM 090751Z AUTO 01004KT 10SM CLR M04/M09 A3030 RMK AO2 SLP263 T10391094 |
| 01:51 EST |  Partly Cloudy | -4°C / 25°F | -10°C / 14°F | 63% | 1027 mb (30.33 in) | NNE 11 kph (NNE 6.9 mph) | - | 10SM |
| | KPWM 090651Z AUTO 02006KT 10SM FEW110 M04/M10 A3033 RMK AO2 SLP272 T10391100 |
| 00:51 EST |  Clear | -4°C / 25°F | -10°C / 14°F | 63% | 1028 mb (30.36 in) | NNE 9 kph (NNE 5.8 mph) | - | 10SM |
| | KPWM 090551Z AUTO 02005KT 10SM CLR M04/M10 A3035 RMK AO2 SLP277 T10391100 11011 21044 58003 |