| 06:15 CST |  Overcast Light Snow | -10°C / 14°F | -11°C / 12°F | 92% | 993 mb (29.32 in) | NW 44 kph (NW 27.6 mph) | - | 1SM |
| | KPEA 091215Z AUTO 31024G35KT 1SM -SN OVC004 M10/M11 A2933 RMK AO2 |
| 05:55 CST |  Overcast Snow | -8°C / 18°F | -10°C / 14°F | 86% | 993 mb (29.32 in) | NW 46 kph (NW 28.8 mph) | - | |
| | KPEA 091155Z AUTO 31025G41KT SN OVC004 M08/M10 A2931 RMK AO2 |
| 05:35 CST |  Overcast Snow | -8°C / 18°F | -10°C / 14°F | 86% | 992 mb (29.29 in) | NW 54 kph (NW 33.4 mph) | - | |
| | KPEA 091135Z AUTO 31029G39KT SN OVC004 M08/M10 A2929 RMK AO2 |
| 05:15 CST |  Overcast Snow | -8°C / 18°F | -10°C / 14°F | 86% | 992 mb (29.29 in) | NW 54 kph (NW 33.4 mph) | - | |
| | KPEA 091115Z AUTO 30029G37KT SN OVC004 M08/M10 A2928 RMK AO2 |
| 04:55 CST |  Overcast Snow | -7°C / 19°F | -8°C / 18°F | 93% | 991 mb (29.26 in) | NW 46 kph (NW 28.8 mph) | - | |
| | KPEA 091055Z AUTO 30025G34KT SN OVC004 M07/M08 A2926 RMK AO2 |
| 04:35 CST |  Overcast Snow | -7°C / 19°F | -8°C / 18°F | 93% | 990 mb (29.23 in) | NW 44 kph (NW 27.6 mph) | - | 1SM |
| | KPEA 091035Z AUTO 30024G35KT 1SM SN OVC004 M07/M08 A2924 RMK AO2 |
| 04:15 CST |  Overcast Snow | -7°C / 19°F | -8°C / 18°F | 93% | 990 mb (29.23 in) | NW 44 kph (NW 27.6 mph) | - | |
| | KPEA 091015Z AUTO 31024G36KT SN OVC006 M07/M08 A2923 RMK AO2 |
| 03:55 CST |  Overcast Light Snow | -6°C / 21°F | -7°C / 19°F | 93% | 990 mb (29.23 in) | NW 44 kph (NW 27.6 mph) | - | 1SM |
| | KPEA 090955Z AUTO 30024G31KT 1SM -SN OVC006 M06/M07 A2922 RMK AO2 |
| 03:35 CST |  Overcast Snow | -5°C / 23°F | -6°C / 21°F | 93% | 989 mb (29.21 in) | NW 44 kph (NW 27.6 mph) | - | 1SM |
| | KPEA 090935Z AUTO 31024G29KT 1SM SN OVC006 M05/M06 A2920 RMK AO2 |
| 03:15 CST |  Overcast Light Snow | -5°C / 23°F | -5°C / 23°F | 100% | 988 mb (29.18 in) | NW 43 kph (NW 26.5 mph) | - | 1 1/4SM |
| | KPEA 090915Z AUTO 31023G29KT 1 1/4SM -SN OVC006 M05/M05 A2919 RMK AO2 |
| 02:55 CST |  Overcast Light Snow | -5°C / 23°F | -5°C / 23°F | 100% | 988 mb (29.18 in) | NW 32 kph (NW 19.6 mph) | - | 1 1/4SM |
| | KPEA 090855Z AUTO 31017G27KT 1 1/4SM -SN BKN006 OVC011 M05/M05 A2918 RMK AO2 |
| 02:35 CST |  Overcast Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 988 mb (29.18 in) | NW 35 kph (NW 21.9 mph) | - | 1 1/4SM |
| | KPEA 090835Z AUTO 32019G23KT 1 1/4SM -SN OVC006 M04/M05 A2917 RMK AO2 |
| 02:15 CST |  Overcast Snow | -3°C / 27°F | -4°C / 25°F | 93% | 987 mb (29.15 in) | NW 32 kph (NW 19.6 mph) | - | 1 1/4SM |
| | KPEA 090815Z AUTO 31017G24KT 1 1/4SM SN OVC006 M03/M04 A2916 RMK AO2 |
| 01:55 CST |  Overcast Light Snow | -3°C / 27°F | -3°C / 27°F | 100% | 987 mb (29.15 in) | NW 30 kph (NW 18.4 mph) | - | 1 1/4SM |
| | KPEA 090755Z AUTO 32016KT 1 1/4SM -SN OVC008 M03/M03 A2916 RMK AO2 |
| 01:35 CST |  Overcast Light Snow | -3°C / 27°F | -3°C / 27°F | 100% | 987 mb (29.15 in) | NW 30 kph (NW 18.4 mph) | - | |
| | KPEA 090735Z AUTO 32016G21KT -SN OVC011 M03/M03 A2916 RMK AO2 |
| 01:15 CST |  Overcast Light Snow | -3°C / 27°F | -3°C / 27°F | 100% | 987 mb (29.15 in) | NNW 26 kph (NNW 16.1 mph) | - | 2SM |
| | KPEA 090715Z AUTO 33014KT 2SM -SN OVC011 M03/M03 A2915 RMK AO2 |
| 00:55 CST |  Overcast Light Snow | -3°C / 27°F | -3°C / 27°F | 100% | 987 mb (29.15 in) | NNW 28 kph (NNW 17.3 mph) | - | 1 1/2SM |
| | KPEA 090655Z AUTO 34015G18KT 1 1/2SM -SN OVC009 M03/M03 A2915 RMK AO2 |
| 00:35 CST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 987 mb (29.15 in) | NNW 22 kph (NNW 13.8 mph) | - | |
| | KPEA 090635Z AUTO 34012G17KT -SN OVC009 M02/M03 A2915 RMK AO2 |
| 00:18 CST |  Overcast Light Snow | -2°C / 28°F | -2°C / 28°F | 100% | 988 mb (29.18 in) | N 22 kph (N 13.8 mph) | - | 2SM |
| | KPEA 090618Z AUTO 35012G17KT 2SM -SN OVC009 M02/M02 A2917 RMK AO2 |