| 18:55 EST |  Clear | 7°C / 45°F | -4°C / 25°F | 46% | 999 mb (29.5 in) | W 30 kph (W 18.4 mph) | - | 10SM |
| | KPSM 282355Z 28016G21KT 10SM CLR 07/M04 A2951 RMK AO2A SLP996 T00711036 10099 20069 51037 |
| 17:55 EST |  Partly Cloudy | 7°C / 45°F | -4°C / 25°F | 46% | 999 mb (29.5 in) | NW 22 kph (NW 13.8 mph) | - | 10SM |
| | KPSM 282255Z 30012G23KT 10SM FEW250 07/M04 A2949 RMK AO2A SLP989 T00741035 |
| 16:55 EST |  Partly Cloudy | 8°C / 46°F | -3°C / 27°F | 46% | 998 mb (29.47 in) | WNW 20 kph (WNW 12.7 mph) | - | 10SM |
| | KPSM 282155Z 29011G22KT 10SM FEW250 08/M03 A2946 RMK AO2A PK WND 30028/2120 SLP977 T00791034 |
| 15:55 EST |  Partly Cloudy | 9°C / 48°F | -4°C / 25°F | 40% | 996 mb (29.41 in) | WNW 30 kph (WNW 18.4 mph) | - | 10SM |
| | KPSM 282055Z 29016G31KT 10SM FEW250 09/M04 A2940 RMK AO2A PK WND 31035/1959 SLP960 T00871037 53037 |
| 14:55 EST |  Partly Cloudy | 10°C / 50°F | -4°C / 25°F | 37% | 994 mb (29.35 in) | WNW 39 kph (WNW 24.2 mph) | - | 10SM |
| | KPSM 281955Z 29021G37KT 10SM SCT250 10/M04 A2936 RMK AO2A PK WND 30039/1942 SLP945 T00971037 |
| 13:55 EST |  Mostly Cloudy | 10°C / 50°F | -3°C / 27°F | 40% | 993 mb (29.32 in) | W 43 kph (W 26.5 mph) | - | 10SM |
| | KPSM 281855Z 28023G32KT 10SM SCT140 BKN250 10/M03 A2932 RMK AO2A PK WND 29037/1834 SLP929 T00961026 |
| 12:55 EST |  Mostly Cloudy | 9°C / 48°F | -1°C / 30°F | 50% | 992 mb (29.29 in) | NW 39 kph (NW 24.2 mph) | - | 10SM |
| | KPSM 281755Z 30021G32KT 10SM FEW040 SCT140 BKN250 09/M01 A2929 RMK AO2A PK WND 29037/1728 SLP922 T00901015 10090 20064 53036 |
| 11:55 EST |  Mostly Cloudy | 9°C / 48°F | -1°C / 30°F | 50% | 990 mb (29.23 in) | WNW 56 kph (WNW 34.5 mph) | - | 10SM |
| | KPSM 281655Z 29030G37KT 10SM FEW040 BKN140 BKN250 09/M01 A2923 RMK AO2A PK WND 30041/1613 SLP900 T00891009 |
| 10:55 EST |  Mostly Cloudy | 8°C / 46°F | 0°C / 32°F | 57% | 989 mb (29.21 in) | WNW 46 kph (WNW 28.8 mph) | 0.25 mm (0.01 in) | 10SM |
| | KPSM 281555Z 29025G37KT 10SM FEW040 BKN120 BKN250 08/00 A2921 RMK AO2A PK WND 31039/1509 SLP893 P0001 T00810004 |
| 09:55 EST |  Overcast | 8°C / 46°F | 0°C / 32°F | 57% | 988 mb (29.18 in) | NW 44 kph (NW 27.6 mph) | - | 10SM |
| | KPSM 281455Z 30024G36KT 10SM FEW040 BKN150 OVC250 08/00 A2919 RMK AO2A PK WND 31041/1423 SLP886 T00810002 53033 |
| 08:55 EST |  Overcast | 8°C / 46°F | 1°C / 34°F | 62% | 987 mb (29.15 in) | NW 41 kph (NW 25.3 mph) | - | 10SM |
| | KPSM 281355Z 30022G32KT 10SM SCT035 BKN120 OVC250 08/01 A2915 RMK AO2A PK WND 30037/1342 SLP874 T00770007 |
| 07:55 EST |  Overcast | 7°C / 45°F | 2°C / 36°F | 71% | 986 mb (29.12 in) | WNW 26 kph (WNW 16.1 mph) | - | 10SM |
| | KPSM 281255Z 29014G28KT 10SM FEW030 BKN045 OVC110 07/02 A2913 RMK AO2A PK WND 29035/1213 SLP865 T00670016 |
| 06:55 EST |  Overcast | 6°C / 43°F | 1°C / 34°F | 71% | 985 mb (29.09 in) | NW 33 kph (NW 20.7 mph) | 0.25 mm (0.01 in) | 10SM |
| | KPSM 281155Z 30018G27KT 10SM BKN055 OVC070 06/01 A2909 RMK AO2A PK WND 29036/1114 RAE1057 SLP853 P0001 60002 70140 T00630011 10063 20048 53028 |
| 06:06 EST |  Overcast | 6°C / 43°F | 1°C / 34°F | 71% | 984 mb (29.06 in) | WNW 28 kph (WNW 17.3 mph) | - | 10SM |
| | KPSM 281106Z 29015G29KT 10SM FEW030 BKN055 OVC070 06/01 A2906 RMK AO2A |
| 05:55 EST |  Overcast Light Rain | 6°C / 43°F | 1°C / 34°F | 71% | 984 mb (29.06 in) | WNW 28 kph (WNW 17.3 mph) | 0.00 mm (0.00 in) | 10SM |
| | KPSM 281055Z 29015G26KT 10SM -RA FEW030 BKN055 OVC070 06/01 A2906 RMK AO2A PK WND 31026/1044 SLP842 P0000 T00550012 |
| 05:30 EST |  Overcast Light Rain | 5°C / 41°F | 1°C / 34°F | 76% | 984 mb (29.06 in) | NW 24 kph (NW 15 mph) | - | 10SM |
| | KPSM 281030Z 30013G20KT 10SM -RA FEW025 BKN035 OVC070 05/01 A2905 RMK AO2A |
| 04:55 EST |  Overcast Light Rain | 5°C / 41°F | 2°C / 36°F | 81% | 983 mb (29.03 in) | WNW 24 kph (WNW 15 mph) | 0.00 mm (0.00 in) | 8SM |
| | KPSM 280955Z 29013G21KT 8SM -RA BKN025 OVC032 05/02 A2903 RMK AO2A SLP834 P0000 T00480017 |
| 04:36 EST |  Overcast Light Rain | 5°C / 41°F | 2°C / 36°F | 81% | 983 mb (29.03 in) | NW 32 kph (NW 19.6 mph) | - | 8SM |
| | KPSM 280936Z 30017G22KT 8SM -RA BKN025 OVC032 05/02 A2903 RMK AO2A |
| 03:55 EST |  Overcast Light Rain | 5°C / 41°F | 2°C / 36°F | 81% | 982 mb (29 in) | WNW 32 kph (WNW 19.6 mph) | 0.00 mm (0.00 in) | 8SM |
| | KPSM 280855Z 29017G23KT 8SM -RA SCT025 OVC040 05/02 A2901 RMK AO2A SLP825 P0000 60001 T00520017 53010 |
| 02:55 EST |  Overcast Light Rain | 5°C / 41°F | 2°C / 36°F | 81% | 982 mb (29 in) | W 24 kph (W 15 mph) | 0.00 mm (0.00 in) | 8SM |
| | KPSM 280755Z 28013G17KT 8SM -RA SCT025 BKN050 OVC070 05/02 A2899 RMK AO2A SLP818 P0000 T00510022 |
| 01:55 EST |  Overcast Light Rain | 5°C / 41°F | 3°C / 37°F | 87% | 981 mb (28.97 in) | W 26 kph (W 16.1 mph) | 0.25 mm (0.01 in) | 8SM |
| | KPSM 280655Z 28014G18KT 8SM -RA BKN022 BKN035 OVC050 05/03 A2898 RMK AO2A SLP816 P0001 T00500025 |
| 00:55 EST |  Overcast Light Rain | 5°C / 41°F | 2°C / 36°F | 81% | 981 mb (28.97 in) | W 26 kph (W 16.1 mph) | 0.00 mm (0.00 in) | 7SM |
| | KPSM 280555Z 28014G21KT 7SM -RA BKN022 BKN035 OVC050 05/02 A2898 RMK AO2A SLP815 P0000 60010 T00490024 10049 20043 56014 |