| 09:15 EST |  Clear | -9°C / 16°F | -13°C / 9°F | 73% | 1019 mb (30.09 in) | SSW 11 kph (SSW 6.9 mph) | - | 10SM |
| | KCIU 061415Z AUTO 26006KT 10SM CLR M09/M13 A3008 RMK AO1 |
| 08:55 EST |  Clear | -10°C / 14°F | -13°C / 9°F | 79% | 1019 mb (30.09 in) | WNW 11 kph (WNW 6.9 mph) | - | 10SM |
| | KCIU 061355Z AUTO 29006KT 10SM CLR M10/M13 A3008 RMK AO1 |
| 08:35 EST |  Clear | -10°C / 14°F | -14°C / 7°F | 73% | 1018 mb (30.06 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KCIU 061335Z AUTO 27006KT 10SM CLR M10/M14 A3007 RMK AO1 |
| 08:15 EST |  Clear | -9°C / 16°F | -13°C / 9°F | 73% | 1018 mb (30.06 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KCIU 061315Z AUTO 27006KT 10SM CLR M09/M13 A3007 RMK AO1 |
| 07:55 EST |  Partly Cloudy | -10°C / 14°F | -14°C / 7°F | 73% | 1018 mb (30.06 in) | SSW 9 kph (SSW 5.8 mph) | - | 10SM |
| | KCIU 061255Z AUTO 25005KT 10SM SCT065 M10/M14 A3007 RMK AO1 |
| 07:35 EST |  Mostly Cloudy | -9°C / 16°F | -14°C / 7°F | 67% | 1018 mb (30.06 in) | W 9 kph (W 5.8 mph) | - | 10SM |
| | KCIU 061235Z AUTO 27005KT 10SM BKN065 M09/M14 A3006 RMK AO1 |
| 07:15 EST |  Partly Cloudy | -9°C / 16°F | -14°C / 7°F | 67% | 1018 mb (30.06 in) | SSW 11 kph (SSW 6.9 mph) | - | 10SM |
| | KCIU 061215Z AUTO 26006KT 10SM SCT065 M09/M14 A3007 RMK AO1 |
| 06:55 EST |  Partly Cloudy | -9°C / 16°F | -14°C / 7°F | 67% | 1018 mb (30.06 in) | SSW 11 kph (SSW 6.9 mph) | - | 10SM |
| | KCIU 061155Z AUTO 25006KT 10SM FEW065 M09/M14 A3006 RMK AO1 11080 21100 52003 |
| 06:35 EST |  Mostly Cloudy | -10°C / 14°F | -14°C / 7°F | 73% | 1018 mb (30.06 in) | NW 15 kph (NW 9.2 mph) | - | 10SM |
| | KCIU 061135Z AUTO 30008KT 10SM BKN065 M10/M14 A3006 RMK AO1 |
| 06:15 EST |  Partly Cloudy | -10°C / 14°F | -14°C / 7°F | 73% | 1018 mb (30.06 in) | W 7 kph (W 4.6 mph) | - | 10SM |
| | KCIU 061115Z AUTO 28004KT 10SM SCT075 M10/M14 A3005 RMK AO1 |
| 05:55 EST |  Clear | -9°C / 16°F | -14°C / 7°F | 67% | 1017 mb (30.03 in) | W 7 kph (W 4.6 mph) | - | 10SM |
| | KCIU 061055Z AUTO 28004KT 10SM CLR M09/M14 A3004 RMK AO1 |
| 05:35 EST |  Partly Cloudy | -9°C / 16°F | -13°C / 9°F | 73% | 1017 mb (30.03 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KCIU 061035Z AUTO 27006KT 10SM SCT075 M09/M13 A3004 RMK AO1 |
| 05:15 EST |  Overcast | -9°C / 16°F | -13°C / 9°F | 73% | 1017 mb (30.03 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KCIU 061015Z AUTO 26004KT 10SM OVC075 M09/M13 A3004 RMK AO1 |
| 04:55 EST |  Mostly Cloudy | -9°C / 16°F | -14°C / 7°F | 67% | 1018 mb (30.06 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KCIU 060955Z AUTO 28003KT 10SM BKN075 M09/M14 A3005 RMK AO1 |
| 04:35 EST |  Partly Cloudy | -9°C / 16°F | -14°C / 7°F | 67% | 1017 mb (30.03 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KCIU 060935Z AUTO 28003KT 10SM SCT090 M09/M14 A3004 RMK AO1 |
| 04:15 EST |  Mostly Cloudy | -9°C / 16°F | -13°C / 9°F | 73% | 1018 mb (30.06 in) | W 7 kph (W 4.6 mph) | - | 10SM |
| | KCIU 060915Z AUTO 28004KT 10SM BKN080 M09/M13 A3005 RMK AO1 |
| 03:55 EST |  Clear | -9°C / 16°F | -14°C / 7°F | 67% | 1018 mb (30.06 in) | WNW 11 kph (WNW 6.9 mph) | - | 10SM |
| | KCIU 060855Z AUTO 29006KT 10SM CLR M09/M14 A3005 RMK AO1 52003 |
| 03:35 EST |  Clear | -8°C / 18°F | -14°C / 7°F | 62% | 1018 mb (30.06 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KCIU 060835Z AUTO 28006KT 10SM CLR M08/M14 A3005 RMK AO1 |
| 03:15 EST |  Clear | -8°C / 18°F | -13°C / 9°F | 68% | 1018 mb (30.06 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KCIU 060815Z AUTO 28007KT 10SM CLR M08/M13 A3005 RMK AO1 |
| 02:55 EST |  Clear | -8°C / 18°F | -13°C / 9°F | 68% | 1018 mb (30.06 in) | W 15 kph (W 9.2 mph) | - | 10SM |
| | KCIU 060755Z AUTO 28008KT 10SM CLR M08/M13 A3005 RMK AO1 |
| 02:35 EST |  Clear | -8°C / 18°F | -13°C / 9°F | 68% | 1017 mb (30.03 in) | WNW 17 kph (WNW 10.4 mph) | - | 10SM |
| | KCIU 060735Z AUTO 29009KT 10SM CLR M08/M13 A3004 RMK AO1 |
| 02:15 EST |  Clear | -8°C / 18°F | -13°C / 9°F | 68% | 1017 mb (30.03 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KCIU 060715Z AUTO 28007KT 10SM CLR M08/M13 A3004 RMK AO1 |
| 01:55 EST |  Clear | -8°C / 18°F | -13°C / 9°F | 68% | 1017 mb (30.03 in) | W 15 kph (W 9.2 mph) | - | 10SM |
| | KCIU 060655Z AUTO 27008KT 10SM CLR M08/M13 A3004 RMK AO1 |
| 01:35 EST |  Partly Cloudy | -8°C / 18°F | -13°C / 9°F | 68% | 1017 mb (30.03 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KCIU 060635Z AUTO 27007KT 10SM FEW048 M08/M13 A3004 RMK AO1 |
| 01:15 EST |  Mostly Cloudy | -8°C / 18°F | -13°C / 9°F | 68% | 1017 mb (30.03 in) | W 9 kph (W 5.8 mph) | - | 10SM |
| | KCIU 060615Z AUTO 27005KT 10SM BKN048 M08/M13 A3004 RMK AO1 |
| 00:55 EST |  Overcast | -8°C / 18°F | -13°C / 9°F | 68% | 1017 mb (30.03 in) | W 11 kph (W 6.9 mph) | - | 10SM |
| | KCIU 060555Z AUTO 27006KT 10SM OVC046 M08/M13 A3004 RMK AO1 11070 21080 410501100 52014 |
| 00:35 EST |  Overcast | -7°C / 19°F | -13°C / 9°F | 63% | 1017 mb (30.03 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KCIU 060535Z AUTO 27007KT 10SM OVC046 M07/M13 A3004 RMK AO1 |
| 00:15 EST |  Overcast | -7°C / 19°F | -12°C / 10°F | 68% | 1017 mb (30.03 in) | W 15 kph (W 9.2 mph) | - | 10SM |
| | KCIU 060515Z AUTO 28008KT 10SM SCT046 OVC050 M07/M12 A3004 RMK AO1 |