| 04:15 EST |  Overcast | 1°C / 34°F | -1°C / 30°F | 87% | 1029 mb (30.39 in) | E 9 kph (E 5.8 mph) | - | 5SM |
| | KSFZ 260915Z 08005KT 5SM OVC003 01/M01 A3039 RMK AO1 |
| 03:55 EST |  Overcast | 0°C / 32°F | -1°C / 30°F | 93% | 1029 mb (30.39 in) | NE 7 kph (NE 4.6 mph) | - | 4SM |
| | KSFZ 260855Z 05004KT 4SM OVC003 00/M01 A3040 RMK AO1 52003 |
| 03:35 EST |  Overcast | 0°C / 32°F | -1°C / 30°F | 93% | 1029 mb (30.39 in) | ENE 7 kph (ENE 4.6 mph) | - | 3SM |
| | KSFZ 260835Z 06004KT 3SM OVC002 00/M01 A3040 RMK AO1 |
| 03:15 EST |  Overcast | 0°C / 32°F | -1°C / 30°F | 93% | 1029 mb (30.39 in) | ENE 6 kph (ENE 3.5 mph) | - | 2SM |
| | KSFZ 260815Z 06003KT 2SM OVC002 00/M01 A3040 RMK AO1 |
| 02:55 EST |  Overcast | 0°C / 32°F | -1°C / 30°F | 93% | 1029 mb (30.39 in) | NE 9 kph (NE 5.8 mph) | - | 2SM |
| | KSFZ 260755Z 05005KT 2SM OVC002 00/M01 A3040 RMK AO1 |
| 02:35 EST |  Overcast | 0°C / 32°F | -1°C / 30°F | 93% | 1030 mb (30.42 in) | NE 9 kph (NE 5.8 mph) | - | 2 1/2SM |
| | KSFZ 260735Z 05005KT 2 1/2SM OVC002 00/M01 A3041 RMK AO1 |
| 02:15 EST |  Overcast | 1°C / 34°F | -1°C / 30°F | 87% | 1030 mb (30.42 in) | ENE 9 kph (ENE 5.8 mph) | - | 2 1/2SM |
| | KSFZ 260715Z 06005KT 2 1/2SM OVC002 01/M01 A3041 RMK AO1 |
| 01:55 EST |  Overcast | 1°C / 34°F | -1°C / 30°F | 87% | 1029 mb (30.39 in) | ENE 7 kph (ENE 4.6 mph) | - | 5SM |
| | KSFZ 260655Z 06004KT 5SM OVC003 01/M01 A3040 RMK AO1 |
| 01:35 EST |  Overcast | 1°C / 34°F | 0°C / 32°F | 93% | 1029 mb (30.39 in) | E 7 kph (E 4.6 mph) | - | 9SM |
| | KSFZ 260635Z 08004KT 9SM OVC003 01/00 A3040 RMK AO1 |
| 01:15 EST |  Overcast | 1°C / 34°F | 0°C / 32°F | 93% | 1029 mb (30.39 in) | E 6 kph (E 3.5 mph) | - | 6SM |
| | KSFZ 260615Z 08003KT 6SM OVC003 01/00 A3039 RMK AO1 |
| 00:55 EST |  Overcast | 1°C / 34°F | 0°C / 32°F | 93% | 1029 mb (30.39 in) | E 7 kph (E 4.6 mph) | - | 10SM |
| | KSFZ 260555Z 08004KT 10SM OVC003 01/00 A3039 RMK AO1 10010 20010 57007 |
| 00:35 EST |  Overcast | 1°C / 34°F | -1°C / 30°F | 87% | 1029 mb (30.39 in) | E 7 kph (E 4.6 mph) | - | 5SM |
| | KSFZ 260535Z 08004KT 5SM OVC003 01/M01 A3039 RMK AO1 |
| 00:15 EST |  Overcast | 1°C / 34°F | 0°C / 32°F | 93% | 1029 mb (30.39 in) | E 9 kph (E 5.8 mph) | - | 10SM |
| | KSFZ 260515Z 10005KT 10SM OVC003 01/00 A3038 RMK AO1 |