| 03:21 EST |  Mostly Cloudy Fog And Mist | -2°C / 28°F | -3°C / 27°F | 93% | 1019 mb (30.09 in) | SE 6 kph (SE 3.5 mph) | - | 5SM |
| | KCSV 010821Z AUTO 13003KT 5SM BR BKN002 M02/M03 A3010 RMK AO2 |
| 03:00 EST |  Partly Cloudy Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1019 mb (30.09 in) | Calm | - | 6SM |
| | KCSV 010800Z AUTO 00000KT 6SM BR FEW004 M02/M02 A3009 RMK AO2 |
| 02:53 EST |  Clear Fog And Mist | -2°C / 28°F | -3°C / 27°F | 93% | 1019 mb (30.09 in) | Calm | - | 6SM |
| | KCSV 010753Z AUTO 00000KT 6SM BR CLR M02/M03 A3009 RMK AO2 SLP199 T10171028 |
| 01:53 EST |  Clear Fog And Mist | -2°C / 28°F | -3°C / 27°F | 93% | 1019 mb (30.09 in) | ENE 6 kph (ENE 3.5 mph) | - | 5SM |
| | KCSV 010653Z AUTO 06003KT 5SM BR CLR M02/M03 A3008 RMK AO2 SLP194 T10171028 |
| 00:53 EST |  Clear | -1°C / 30°F | -2°C / 28°F | 93% | 1020 mb (30.12 in) | Calm | - | 7SM |
| | KCSV 010553Z AUTO 00000KT 7SM CLR M01/M02 A3012 RMK AO2 SLP206 T10061022 10033 21011 401221011 50008 |