| 05:55 MST |  Partly Cloudy | -2°C / 28°F | -9°C / 16°F | 59% | 1020 mb (30.12 in) | N 17 kph (N 10.4 mph) | - | 10SM |
| | KGPI 011255Z AUTO 01009KT 10SM FEW080 M02/M09 A3013 RMK AO2 SLP225 T10221089 $ |
| 04:55 MST |  Overcast | -2°C / 28°F | -8°C / 18°F | 64% | 1020 mb (30.12 in) | N 15 kph (N 9.2 mph) | - | 10SM |
| | KGPI 011155Z AUTO 36008KT 10SM BKN090 OVC110 M02/M08 A3012 RMK AO2 SLP220 60000 T10171083 10050 21017 51029 $ |
| 03:55 MST |  Overcast | -1°C / 30°F | -8°C / 18°F | 59% | 1019 mb (30.09 in) | N 17 kph (N 10.4 mph) | - | 10SM |
| | KGPI 011055Z AUTO 36009KT 10SM BKN080 OVC110 M01/M08 A3009 RMK AO2 SLP209 T10111078 $ |
| 02:55 MST |  Overcast | -1°C / 30°F | -8°C / 18°F | 59% | 1018 mb (30.06 in) | NNE 26 kph (NNE 16.1 mph) | 0.00 mm (0.00 in) | 10SM |
| | KGPI 010955Z AUTO 02014G21KT 10SM OVC032 M01/M08 A3006 RMK AO2 PK WND 03026/0911 UPB19E23SNE19 SLP197 P0000 T10111078 $ |
| 01:55 MST |  Overcast Light Snow | -1°C / 30°F | -6°C / 21°F | 69% | 1017 mb (30.03 in) | NE 32 kph (NE 19.6 mph) | 0.00 mm (0.00 in) | 4SM |
| | KGPI 010855Z AUTO 03017G22KT 4SM -SN BKN032 OVC046 M01/M06 A3002 RMK AO2 PK WND 04028/0829 UPE0756SNB0756 SLP184 P0000 60000 T10111061 53029 $ |
| 01:35 MST |  Overcast Light Snow | -1°C / 30°F | -6°C / 21°F | 69% | 1016 mb (30 in) | NE 33 kph (NE 20.7 mph) | 0.00 mm (0.00 in) | 4SM |
| | KGPI 010835Z AUTO 03018G28KT 4SM -SN SCT028 BKN046 OVC050 M01/M06 A3000 RMK AO2 PK WND 04028/0829 UPE0756SNB0756 P0000 $ |
| 01:06 MST |  Overcast Light Snow | -1°C / 30°F | -5°C / 23°F | 75% | 1016 mb (30 in) | NNE 26 kph (NNE 16.1 mph) | 0.00 mm (0.00 in) | 6SM |
| | KGPI 010806Z AUTO 02014G19KT 6SM -SN BKN021 BKN026 OVC032 M01/M05 A2999 RMK AO2 UPE0756SNB0756 P0000 $ |
| 00:55 MST |  Overcast Unknown Precip | 0°C / 32°F | -5°C / 23°F | 69% | 1015 mb (29.97 in) | N 32 kph (N 19.6 mph) | 0.00 mm (0.00 in) | 10SM |
| | KGPI 010755Z AUTO 01017G27KT 10SM UP FEW023 BKN032 OVC060 00/M05 A2998 RMK AO2 PK WND 03027/0746 UPB54 SLP171 P0000 T00001050 $ |