| 09:56 EST |  Overcast | 12°C / 54°F | 9°C / 48°F | 82% | 1003 mb (29.62 in) | SW 19 kph (SW 11.5 mph) | - | 10SM |
| | KGON 301456Z 22010KT 10SM FEW070 OVC090 12/09 A2961 RMK AO2 PRESFR SLP027 T01220089 58003 |
| 08:56 EST |  Mostly Cloudy | 12°C / 54°F | 9°C / 48°F | 82% | 1003 mb (29.62 in) | SW 13 kph (SW 8.1 mph) | - | 10SM |
| | KGON 301356Z 22007KT 10SM BKN090 12/09 A2963 RMK AO2 SLP033 T01220094 |
| 07:56 EST |  Mostly Cloudy | 12°C / 54°F | 9°C / 48°F | 82% | 1003 mb (29.62 in) | SW 13 kph (SW 8.1 mph) | - | 10SM |
| | KGON 301256Z 23007KT 10SM BKN100 12/09 A2963 RMK AO2 SLP033 T01170094 |
| 06:56 EST |  Overcast | 12°C / 54°F | 9°C / 48°F | 82% | 1003 mb (29.62 in) | SW 11 kph (SW 6.9 mph) | - | 10SM |
| | KGON 301156Z 23006KT 10SM OVC100 12/09 A2962 RMK AO2 SLP031 T01170094 10122 20111 56008 |
| 05:56 EST |  Clear | 12°C / 54°F | 9°C / 48°F | 82% | 1004 mb (29.65 in) | SW 15 kph (SW 9.2 mph) | - | 10SM |
| | KGON 301056Z AUTO 22008KT 10SM CLR 12/09 A2964 RMK AO2 SLP035 T01170094 |
| 04:56 EST |  Clear | 12°C / 54°F | 9°C / 48°F | 82% | 1003 mb (29.62 in) | SW 19 kph (SW 11.5 mph) | - | 10SM |
| | KGON 300956Z AUTO 22010KT 10SM CLR 12/09 A2963 RMK AO2 SLP035 T01170094 |
| 03:56 EST |  Mostly Cloudy | 12°C / 54°F | 9°C / 48°F | 82% | 1004 mb (29.65 in) | SW 20 kph (SW 12.7 mph) | - | 10SM |
| | KGON 300856Z AUTO 22011KT 10SM BKN110 12/09 A2965 RMK AO2 SLP039 T01170094 58025 |
| 02:56 EST |  Mostly Cloudy | 12°C / 54°F | 9°C / 48°F | 82% | 1005 mb (29.68 in) | SW 15 kph (SW 9.2 mph) | - | 10SM |
| | KGON 300756Z AUTO 21008KT 10SM BKN110 12/09 A2967 RMK AO2 SLP048 T01170094 |
| 01:56 EST |  Partly Cloudy | 11°C / 52°F | 9°C / 48°F | 88% | 1006 mb (29.71 in) | SW 11 kph (SW 6.9 mph) | - | 10SM |
| | KGON 300656Z AUTO 21006KT 10SM FEW100 11/09 A2971 RMK AO2 SLP060 T01110094 |
| 00:56 EST |  Partly Cloudy | 11°C / 52°F | 9°C / 48°F | 88% | 1006 mb (29.71 in) | SSE 11 kph (SSE 6.9 mph) | - | 10SM |
| | KGON 300556Z AUTO 20006KT 10SM SCT080 11/09 A2972 RMK AO2 SLP064 T01110094 10117 20100 58017 |