| 11:15 CST |  Overcast Light Snow | 0°C / 32°F | -2°C / 28°F | 87% | 1012 mb (29.88 in) | E 20 kph (E 12.7 mph) | - | 3/4SM |
| | KTNU 081715Z AUTO 10011KT 3/4SM -SN OVC010 00/M02 A2988 RMK AO2 |
| 10:55 CST |  Overcast Light Snow | 0°C / 32°F | -2°C / 28°F | 87% | 1013 mb (29.91 in) | E 20 kph (E 12.7 mph) | - | 1SM |
| | KTNU 081655Z AUTO 10011KT 1SM -SN OVC010 00/M02 A2991 RMK AO2 |
| 10:35 CST |  Overcast Light Snow | -1°C / 30°F | -2°C / 28°F | 93% | 1014 mb (29.94 in) | E 22 kph (E 13.8 mph) | - | 1SM |
| | KTNU 081635Z AUTO 09012KT 1SM -SN BKN007 OVC011 M01/M02 A2993 RMK AO2 |
| 10:15 CST |  Overcast Light Snow | -1°C / 30°F | -2°C / 28°F | 93% | 1014 mb (29.94 in) | E 20 kph (E 12.7 mph) | - | 3/4SM |
| | KTNU 081615Z AUTO 09011KT 3/4SM -SN OVC007 M01/M02 A2994 RMK AO2 |
| 09:55 CST |  Overcast Light Snow | -1°C / 30°F | -3°C / 27°F | 86% | 1014 mb (29.94 in) | E 20 kph (E 12.7 mph) | - | 3/4SM |
| | KTNU 081555Z AUTO 09011KT 3/4SM -SN OVC009 M01/M03 A2995 RMK AO2 |
| 09:35 CST |  Overcast Light Snow | -1°C / 30°F | -3°C / 27°F | 86% | 1015 mb (29.97 in) | E 19 kph (E 11.5 mph) | - | 1SM |
| | KTNU 081535Z AUTO 09010KT 1SM -SN OVC009 M01/M03 A2996 RMK AO2 |
| 09:15 CST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1015 mb (29.97 in) | E 22 kph (E 13.8 mph) | - | 1SM |
| | KTNU 081515Z AUTO 09012G16KT 1SM -SN OVC007 M02/M03 A2997 RMK AO2 |
| 08:55 CST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1016 mb (30 in) | E 20 kph (E 12.7 mph) | - | 2SM |
| | KTNU 081455Z AUTO 09011KT 2SM -SN OVC007 M02/M03 A3000 RMK AO2 |
| 08:35 CST |  Mostly Cloudy | -2°C / 28°F | -3°C / 27°F | 93% | 1016 mb (30 in) | E 20 kph (E 12.7 mph) | - | 2 1/2SM |
| | KTNU 081435Z AUTO 09011KT 2 1/2SM SCT007 BKN016 M02/M03 A3000 RMK AO2 |
| 08:15 CST |  Overcast | -2°C / 28°F | -4°C / 25°F | 86% | 1016 mb (30 in) | E 20 kph (E 12.7 mph) | - | 2SM |
| | KTNU 081415Z AUTO 09011KT 2SM OVC016 M02/M04 A3001 RMK AO2 |
| 07:55 CST |  Overcast Light Snow | -3°C / 27°F | -5°C / 23°F | 86% | 1017 mb (30.03 in) | E 17 kph (E 10.4 mph) | - | 1 3/4SM |
| | KTNU 081355Z AUTO 09009KT 1 3/4SM -SN BKN013 OVC018 M03/M05 A3002 RMK AO2 |
| 07:35 CST |  Overcast Light Snow | -3°C / 27°F | -5°C / 23°F | 86% | 1017 mb (30.03 in) | E 17 kph (E 10.4 mph) | - | 2 1/2SM |
| | KTNU 081335Z AUTO 09009KT 2 1/2SM -SN SCT018 BKN027 OVC035 M03/M05 A3004 RMK AO2 |
| 07:15 CST |  Overcast | -3°C / 27°F | -5°C / 23°F | 86% | 1018 mb (30.06 in) | E 17 kph (E 10.4 mph) | - | 3 1/2SM |
| | KTNU 081315Z AUTO 09009KT 3 1/2SM SCT031 BKN050 OVC100 M03/M05 A3005 RMK AO2 |
| 06:55 CST |  Overcast | -3°C / 27°F | -5°C / 23°F | 86% | 1018 mb (30.06 in) | E 15 kph (E 9.2 mph) | - | 4SM |
| | KTNU 081255Z AUTO 09008KT 4SM SCT028 BKN042 OVC065 M03/M05 A3007 RMK AO2 |
| 06:35 CST |  Overcast Light Snow | -3°C / 27°F | -5°C / 23°F | 86% | 1019 mb (30.09 in) | E 17 kph (E 10.4 mph) | - | 3SM |
| | KTNU 081235Z AUTO 09009KT 3SM -SN BKN030 OVC042 M03/M05 A3008 RMK AO2 |
| 06:15 CST |  Overcast Light Snow | -3°C / 27°F | -5°C / 23°F | 86% | 1019 mb (30.09 in) | E 13 kph (E 8.1 mph) | - | 2 1/2SM |
| | KTNU 081215Z AUTO 08007KT 2 1/2SM -SN BKN024 BKN033 OVC041 M03/M05 A3010 RMK AO2 |
| 05:55 CST |  Overcast Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 1020 mb (30.12 in) | E 11 kph (E 6.9 mph) | - | 1 3/4SM |
| | KTNU 081155Z AUTO 08006KT 1 3/4SM -SN BKN018 OVC024 M04/M05 A3011 RMK AO2 |
| 05:35 CST |  Overcast Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 1020 mb (30.12 in) | ENE 9 kph (ENE 5.8 mph) | - | 2 1/2SM |
| | KTNU 081135Z AUTO 07005KT 2 1/2SM -SN BKN016 OVC021 M04/M05 A3012 RMK AO2 |
| 05:15 CST |  Overcast Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 1021 mb (30.15 in) | ENE 9 kph (ENE 5.8 mph) | - | 1 3/4SM |
| | KTNU 081115Z AUTO 06005KT 1 3/4SM -SN OVC012 M04/M05 A3014 RMK AO2 |
| 04:55 CST |  Overcast Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 1021 mb (30.15 in) | ENE 7 kph (ENE 4.6 mph) | - | 1 1/2SM |
| | KTNU 081055Z AUTO 07004KT 1 1/2SM -SN OVC014 M04/M05 A3015 RMK AO2 |
| 04:35 CST |  Overcast Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 1021 mb (30.15 in) | ENE 9 kph (ENE 5.8 mph) | - | 2SM |
| | KTNU 081035Z AUTO 07005KT 2SM -SN OVC014 M04/M05 A3015 RMK AO2 |
| 04:15 CST |  Overcast Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1021 mb (30.15 in) | ENE 7 kph (ENE 4.6 mph) | - | 2SM |
| | KTNU 081015Z AUTO 07004KT 2SM -SN OVC016 M04/M06 A3015 RMK AO2 |
| 03:55 CST |  Overcast Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1021 mb (30.15 in) | ENE 9 kph (ENE 5.8 mph) | - | 2SM |
| | KTNU 080955Z AUTO 07005KT 2SM -SN OVC016 M04/M06 A3016 RMK AO2 |
| 03:35 CST |  Overcast Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1022 mb (30.18 in) | ENE 7 kph (ENE 4.6 mph) | - | 2SM |
| | KTNU 080935Z AUTO 06004KT 2SM -SN OVC014 M04/M06 A3017 RMK AO2 |
| 03:15 CST |  Overcast Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1022 mb (30.18 in) | NE 6 kph (NE 3.5 mph) | - | 2 1/2SM |
| | KTNU 080915Z AUTO 05003KT 2 1/2SM -SN OVC014 M04/M06 A3018 RMK AO2 |
| 02:55 CST |  Overcast Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1022 mb (30.18 in) | ENE 11 kph (ENE 6.9 mph) | - | 2SM |
| | KTNU 080855Z AUTO 06006KT 2SM -SN OVC012 M04/M06 A3019 RMK AO2 |
| 02:35 CST |  Overcast Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1023 mb (30.21 in) | ENE 7 kph (ENE 4.6 mph) | - | 1 1/2SM |
| | KTNU 080835Z AUTO 06004KT 1 1/2SM -SN OVC009 M04/M06 A3020 RMK AO2 |
| 02:15 CST |  Overcast Light Snow | -4°C / 25°F | -6°C / 21°F | 86% | 1022 mb (30.18 in) | ENE 7 kph (ENE 4.6 mph) | - | 1 1/2SM |
| | KTNU 080815Z AUTO 07004KT 1 1/2SM -SN OVC009 M04/M06 A3019 RMK AO2 |
| 01:55 CST |  Overcast Light Snow | -5°C / 23°F | -6°C / 21°F | 93% | 1023 mb (30.21 in) | ENE 6 kph (ENE 3.5 mph) | - | 1 1/2SM |
| | KTNU 080755Z AUTO 06003KT 1 1/2SM -SN BKN008 OVC013 M05/M06 A3020 RMK AO2 |
| 01:35 CST |  Overcast Light Snow | -5°C / 23°F | -6°C / 21°F | 93% | 1022 mb (30.18 in) | ENE 7 kph (ENE 4.6 mph) | - | 1 1/2SM |
| | KTNU 080735Z AUTO 06004KT 1 1/2SM -SN OVC008 M05/M06 A3019 RMK AO2 |
| 01:15 CST |  Overcast Light Snow | -5°C / 23°F | -6°C / 21°F | 93% | 1023 mb (30.21 in) | NE 6 kph (NE 3.5 mph) | - | 1 3/4SM |
| | KTNU 080715Z AUTO 05003KT 1 3/4SM -SN OVC012 M05/M06 A3020 RMK AO2 |
| 00:55 CST |  Overcast Light Snow | -5°C / 23°F | -6°C / 21°F | 93% | 1023 mb (30.21 in) | NE 9 kph (NE 5.8 mph) | - | 2SM |
| | KTNU 080655Z AUTO 04005KT 2SM -SN BKN008 OVC012 M05/M06 A3020 RMK AO2 |
| 00:35 CST |  Overcast Light Snow | -5°C / 23°F | -6°C / 21°F | 93% | 1023 mb (30.21 in) | Calm | - | 1 1/2SM |
| | KTNU 080635Z AUTO 00000KT 1 1/2SM -SN OVC008 M05/M06 A3022 RMK AO2 |
| 00:15 CST |  Overcast Light Snow | -5°C / 23°F | -6°C / 21°F | 93% | 1023 mb (30.21 in) | NE 7 kph (NE 4.6 mph) | - | 2 1/2SM |
| | KTNU 080615Z AUTO 05004KT 2 1/2SM -SN OVC012 M05/M06 A3022 RMK AO2 |