| 03:59 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1028 mb (30.36 in) | SSW 20 kph (SSW 12.7 mph) | - | 10SM |
| | KHSP 120859Z AUTO 26011KT 10SM CLR M08/M17 A3036 RMK AO2 |
| 03:40 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1028 mb (30.36 in) | SSW 17 kph (SSW 10.4 mph) | - | 10SM |
| | KHSP 120840Z AUTO 26009KT 10SM CLR M08/M17 A3035 RMK AO2 |
| 03:19 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1028 mb (30.36 in) | W 19 kph (W 11.5 mph) | - | 10SM |
| | KHSP 120819Z AUTO 27010KT 10SM CLR M08/M17 A3035 RMK AO2 |
| 02:59 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1028 mb (30.36 in) | SSW 17 kph (SSW 10.4 mph) | - | 10SM |
| | KHSP 120759Z AUTO 26009KT 10SM CLR M08/M17 A3035 RMK AO2 |
| 02:39 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1027 mb (30.33 in) | W 20 kph (W 12.7 mph) | - | 10SM |
| | KHSP 120739Z AUTO 27011KT 10SM CLR M08/M17 A3034 RMK AO2 |
| 02:19 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1027 mb (30.33 in) | W 20 kph (W 12.7 mph) | - | 10SM |
| | KHSP 120719Z AUTO 27011KT 10SM CLR M08/M17 A3034 RMK AO2 |
| 01:59 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1027 mb (30.33 in) | W 20 kph (W 12.7 mph) | - | 10SM |
| | KHSP 120659Z AUTO 27011KT 10SM CLR M08/M17 A3033 RMK AO2 |
| 01:39 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1027 mb (30.33 in) | W 22 kph (W 13.8 mph) | - | 10SM |
| | KHSP 120639Z AUTO 27012KT 10SM CLR M08/M17 A3032 RMK AO2 |
| 01:19 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1027 mb (30.33 in) | W 24 kph (W 15 mph) | - | 10SM |
| | KHSP 120619Z AUTO 27013KT 10SM CLR M08/M17 A3032 RMK AO2 |
| 00:59 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1026 mb (30.3 in) | W 24 kph (W 15 mph) | - | 10SM |
| | KHSP 120559Z AUTO 27013KT 10SM CLR M08/M17 A3031 RMK AO2 |
| 00:39 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1026 mb (30.3 in) | W 24 kph (W 15 mph) | - | 10SM |
| | KHSP 120539Z AUTO 27013KT 10SM CLR M08/M17 A3030 RMK AO2 |
| 00:21 EST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1026 mb (30.3 in) | W 24 kph (W 15 mph) | - | 10SM |
| | KHSP 120521Z AUTO 27013KT 10SM CLR M08/M17 A3031 RMK AO2 |