| 09:35 CST |  Mostly Cloudy | 6°C / 43°F | -1°C / 30°F | 61% | 1024 mb (30.24 in) | NNE 7 kph (NNE 4.6 mph) | - | 10SM |
| | KPIB 041535Z AUTO 02004KT 10SM BKN090 06/M01 A3023 RMK AO1 |
| 09:15 CST |  Clear | 6°C / 43°F | -1°C / 30°F | 61% | 1024 mb (30.24 in) | N 13 kph (N 8.1 mph) | - | 10SM |
| | KPIB 041515Z AUTO 36007KT 10SM CLR 06/M01 A3024 RMK AO1 |
| 08:55 CST |  Clear | 6°C / 43°F | -1°C / 30°F | 61% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KPIB 041455Z AUTO 00000KT 10SM CLR 06/M01 A3023 RMK AO1 52010 |
| 08:35 CST |  Clear | 4°C / 39°F | -1°C / 30°F | 70% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KPIB 041435Z AUTO 00000KT 10SM CLR 04/M01 A3023 RMK AO1 |
| 08:15 CST |  Partly Cloudy | 4°C / 39°F | -1°C / 30°F | 70% | 1023 mb (30.21 in) | NE 7 kph (NE 4.6 mph) | - | 10SM |
| | KPIB 041415Z AUTO 04004KT 10SM SCT030 04/M01 A3021 RMK AO1 |
| 07:55 CST |  Mostly Cloudy | 4°C / 39°F | -1°C / 30°F | 70% | 1023 mb (30.21 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KPIB 041355Z AUTO 36004KT 10SM BKN030 04/M01 A3021 RMK AO1 |
| 07:35 CST |  Overcast | 4°C / 39°F | -1°C / 30°F | 70% | 1023 mb (30.21 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KPIB 041335Z AUTO 01004KT 10SM OVC030 04/M01 A3020 RMK AO1 |
| 07:15 CST |  Overcast | 4°C / 39°F | -1°C / 30°F | 70% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KPIB 041315Z AUTO 00000KT 10SM OVC030 04/M01 A3021 RMK AO1 |
| 06:55 CST |  Overcast | 4°C / 39°F | -1°C / 30°F | 70% | 1023 mb (30.21 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KPIB 041255Z AUTO 01003KT 10SM OVC030 04/M01 A3020 RMK AO1 |
| 06:35 CST |  Overcast | 4°C / 39°F | -1°C / 30°F | 70% | 1023 mb (30.21 in) | N 11 kph (N 6.9 mph) | - | 10SM |
| | KPIB 041235Z AUTO 01006KT 10SM OVC028 04/M01 A3020 RMK AO1 |
| 06:15 CST |  Overcast | 4°C / 39°F | -1°C / 30°F | 70% | 1023 mb (30.21 in) | NNE 11 kph (NNE 6.9 mph) | - | 10SM |
| | KPIB 041215Z AUTO 02006KT 10SM OVC026 04/M01 A3020 RMK AO1 |
| 05:55 CST |  Overcast | 4°C / 39°F | 0°C / 32°F | 75% | 1023 mb (30.21 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KPIB 041155Z AUTO 01004KT 10SM OVC024 04/00 A3020 RMK AO1 10060 20040 52007 |
| 05:35 CST |  Overcast | 4°C / 39°F | 0°C / 32°F | 75% | 1023 mb (30.21 in) | N 9 kph (N 5.8 mph) | - | 10SM |
| | KPIB 041135Z AUTO 36005KT 10SM OVC022 04/00 A3020 RMK AO1 |
| 05:15 CST |  Overcast | 5°C / 41°F | 0°C / 32°F | 70% | 1023 mb (30.21 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KPIB 041115Z AUTO 01004KT 10SM OVC022 05/00 A3020 RMK AO1 |
| 04:55 CST |  Overcast | 5°C / 41°F | 0°C / 32°F | 70% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KPIB 041055Z AUTO 00000KT 10SM OVC022 05/00 A3020 RMK AO1 |
| 04:35 CST |  Overcast | 5°C / 41°F | 1°C / 34°F | 76% | 1022 mb (30.18 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KPIB 041035Z AUTO 36004KT 10SM OVC020 05/01 A3019 RMK AO1 |
| 04:15 CST |  Overcast | 5°C / 41°F | 1°C / 34°F | 76% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KPIB 041015Z AUTO 00000KT 10SM OVC020 05/01 A3019 RMK AO1 |
| 03:55 CST |  Overcast | 5°C / 41°F | 1°C / 34°F | 76% | 1022 mb (30.18 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KPIB 040955Z AUTO 35004KT 10SM OVC020 05/01 A3018 RMK AO1 |
| 03:35 CST |  Overcast | 5°C / 41°F | 1°C / 34°F | 76% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KPIB 040935Z AUTO 00000KT 10SM OVC018 05/01 A3018 RMK AO1 |
| 03:15 CST |  Overcast | 5°C / 41°F | 1°C / 34°F | 76% | 1022 mb (30.18 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KPIB 040915Z AUTO 35003KT 10SM OVC018 05/01 A3019 RMK AO1 |
| 02:55 CST |  Overcast | 5°C / 41°F | 1°C / 34°F | 76% | 1022 mb (30.18 in) | N 9 kph (N 5.8 mph) | - | 10SM |
| | KPIB 040855Z AUTO 35005KT 10SM OVC018 05/01 A3018 RMK AO1 54000 |
| 02:35 CST |  Overcast | 6°C / 43°F | 2°C / 36°F | 76% | 1022 mb (30.18 in) | NNW 7 kph (NNW 4.6 mph) | - | 10SM |
| | KPIB 040835Z AUTO 34004KT 10SM OVC018 06/02 A3018 RMK AO1 |
| 02:15 CST |  Overcast | 6°C / 43°F | 2°C / 36°F | 76% | 1022 mb (30.18 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KPIB 040815Z AUTO 36003KT 10SM OVC016 06/02 A3018 RMK AO1 |
| 01:55 CST |  Overcast | 6°C / 43°F | 2°C / 36°F | 76% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KPIB 040755Z AUTO 00000KT 10SM OVC016 06/02 A3019 RMK AO1 |
| 01:35 CST |  Overcast | 6°C / 43°F | 2°C / 36°F | 76% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KPIB 040735Z AUTO 00000KT 10SM OVC016 06/02 A3019 RMK AO1 |
| 01:15 CST |  Overcast | 6°C / 43°F | 2°C / 36°F | 76% | 1022 mb (30.18 in) | NNW 7 kph (NNW 4.6 mph) | - | 10SM |
| | KPIB 040715Z AUTO 34004KT 10SM OVC016 06/02 A3019 RMK AO1 |
| 00:55 CST |  Overcast | 6°C / 43°F | 2°C / 36°F | 76% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KPIB 040655Z AUTO 00000KT 10SM OVC016 06/02 A3020 RMK AO1 |
| 00:35 CST |  Overcast | 6°C / 43°F | 2°C / 36°F | 76% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KPIB 040635Z AUTO 00000KT 10SM OVC016 06/02 A3020 RMK AO1 |
| 00:15 CST |  Overcast | 6°C / 43°F | 2°C / 36°F | 76% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KPIB 040615Z AUTO 00000KT 10SM OVC016 06/02 A3019 RMK AO1 |