| 04:56 EST |  Obscured Fog | 9°C / 48°F | 8°C / 46°F | 94% | 1014 mb (29.94 in) | NNW 6 kph (NNW 3.5 mph) | - | 1/4SM |
| | KISP 260956Z 34003KT 1/4SM FG VV001 09/08 A2993 RMK AO2 SLP134 T00940078 |
| 04:39 EST |  Obscured Fog | 9°C / 48°F | 8°C / 46°F | 94% | 1014 mb (29.94 in) | Calm | - | 1/4SM |
| | KISP 260939Z 00000KT 1/4SM FG VV001 09/08 A2993 RMK AO2 |
| 04:10 EST |  Overcast Fog | 9°C / 48°F | 8°C / 46°F | 94% | 1013 mb (29.91 in) | NNW 9 kph (NNW 5.8 mph) | - | 1/2SM |
| | KISP 260910Z 33005KT 1/2SM FG OVC001 09/08 A2992 RMK AO2 |
| 03:56 EST |  Obscured Fog | 9°C / 48°F | 8°C / 46°F | 94% | 1014 mb (29.94 in) | N 6 kph (N 3.5 mph) | - | 1/4SM |
| | KISP 260856Z 35003KT 1/4SM FG VV001 09/08 A2993 RMK AO2 SLP135 T00940078 53001 |
| 02:56 EST |  Obscured Fog | 9°C / 48°F | 8°C / 46°F | 94% | 1013 mb (29.91 in) | Calm | - | 1/4SM |
| | KISP 260756Z 00000KT 1/4SM FG VV001 09/08 A2992 RMK AO2 SLP133 T00940078 |
| 02:34 EST |  Obscured Fog | 9°C / 48°F | 7°C / 45°F | 87% | 1013 mb (29.91 in) | Calm | - | 1/4SM |
| | KISP 260734Z 00000KT 1/4SM FG VV001 09/07 A2992 RMK AO2 |
| 02:17 EST |  Obscured Fog And Mist | 9°C / 48°F | 7°C / 45°F | 87% | 1013 mb (29.91 in) | Calm | - | 3/4SM |
| | KISP 260717Z 00000KT 3/4SM BR VV001 09/07 A2992 RMK AO2 |
| 02:10 EST |  Overcast Fog And Mist | 9°C / 48°F | 7°C / 45°F | 87% | 1013 mb (29.91 in) | ESE 6 kph (ESE 3.5 mph) | - | 1 1/2SM |
| | KISP 260710Z 11003KT 1 1/2SM BR BKN002 OVC005 09/07 A2992 RMK AO2 |
| 02:03 EST |  Overcast | 9°C / 48°F | 7°C / 45°F | 87% | 1013 mb (29.91 in) | ESE 6 kph (ESE 3.5 mph) | - | 8SM |
| | KISP 260703Z 11003KT 8SM OVC004 09/07 A2992 RMK AO2 CIG 001V007 |
| 01:56 EST |  Mostly Cloudy | 9°C / 48°F | 8°C / 46°F | 94% | 1013 mb (29.91 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KISP 260656Z 12003KT 10SM BKN006 09/08 A2992 RMK AO2 SLP133 T00940078 |
| 00:56 EST |  Overcast Fog And Mist | 9°C / 48°F | 7°C / 45°F | 87% | 1014 mb (29.94 in) | Calm | - | 3SM |
| | KISP 260556Z 00000KT 3SM BR OVC007 09/07 A2993 RMK AO2 SLP134 60001 T00890072 10100 20089 55006 |
| 00:27 EST |  Overcast Fog And Mist | 9°C / 48°F | 7°C / 45°F | 87% | 1013 mb (29.91 in) | Calm | - | 2SM |
| | KISP 260527Z 00000KT 2SM BR OVC008 09/07 A2992 RMK AO2 |
| 00:16 EST |  Overcast Fog And Mist | 9°C / 48°F | 7°C / 45°F | 87% | 1013 mb (29.91 in) | Calm | - | 5SM |
| | KISP 260516Z 00000KT 5SM BR OVC009 09/07 A2992 RMK AO2 |