| 03:55 EST |  Partly Cloudy | 9°C / 48°F | 7°C / 45°F | 87% | 1003 mb (29.62 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KSFZ 300855Z 20003KT 10SM SCT110 09/07 A2961 RMK AO1 57024 |
| 03:35 EST |  Overcast | 9°C / 48°F | 7°C / 45°F | 87% | 1003 mb (29.62 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KSFZ 300835Z 21004KT 10SM OVC110 09/07 A2961 RMK AO1 |
| 03:15 EST |  Overcast | 9°C / 48°F | 7°C / 45°F | 87% | 1003 mb (29.62 in) | SW 9 kph (SW 5.8 mph) | - | 10SM |
| | KSFZ 300815Z 22005KT 10SM SCT080 OVC110 09/07 A2963 RMK AO1 |
| 02:55 EST |  Mostly Cloudy | 9°C / 48°F | 7°C / 45°F | 87% | 1004 mb (29.65 in) | SW 6 kph (SW 3.5 mph) | - | 10SM |
| | KSFZ 300755Z 21003KT 10SM BKN080 09/07 A2964 RMK AO1 |
| 02:35 EST |  Overcast | 9°C / 48°F | 7°C / 45°F | 87% | 1004 mb (29.65 in) | SW 9 kph (SW 5.8 mph) | - | 10SM |
| | KSFZ 300735Z 22005KT 10SM FEW070 OVC090 09/07 A2965 RMK AO1 |
| 02:15 EST |  Overcast | 8°C / 46°F | 6°C / 43°F | 87% | 1005 mb (29.68 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KSFZ 300715Z 21004KT 10SM BKN070 OVC090 08/06 A2967 RMK AO1 |
| 01:55 EST |  Mostly Cloudy | 8°C / 46°F | 6°C / 43°F | 87% | 1005 mb (29.68 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KSFZ 300655Z 21004KT 10SM BKN070 BKN090 08/06 A2968 RMK AO1 |
| 01:35 EST |  Partly Cloudy | 8°C / 46°F | 6°C / 43°F | 87% | 1005 mb (29.68 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KSFZ 300635Z 20003KT 10SM FEW070 08/06 A2967 RMK AO1 |
| 01:15 EST |  Clear | 8°C / 46°F | 6°C / 43°F | 87% | 1005 mb (29.68 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KSFZ 300615Z 19004KT 10SM CLR 08/06 A2968 RMK AO1 |
| 00:55 EST |  Partly Cloudy | 8°C / 46°F | 6°C / 43°F | 87% | 1005 mb (29.68 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KSFZ 300555Z 20003KT 10SM FEW070 08/06 A2968 RMK AO1 10080 20060 57020 |
| 00:35 EST |  Partly Cloudy | 8°C / 46°F | 6°C / 43°F | 87% | 1005 mb (29.68 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KSFZ 300535Z 19003KT 10SM SCT110 08/06 A2969 RMK AO1 |
| 00:15 EST |  Partly Cloudy | 7°C / 45°F | 6°C / 43°F | 93% | 1006 mb (29.71 in) | SW 6 kph (SW 3.5 mph) | - | 10SM |
| | KSFZ 300515Z 21003KT 10SM SCT110 07/06 A2970 RMK AO1 |