| 12:55 MST |  Overcast | -8°C / 18°F | -13°C / 9°F | 68% | 1029 mb (30.39 in) | NE 7 kph (NE 4.6 mph) | - | 10SM |
| | KGPI 261955Z 05004KT 10SM OVC018 M08/M13 A3039 RMK AO2 SLP343 T10831128 $ |
| 11:55 MST |  Overcast | -9°C / 16°F | -13°C / 9°F | 73% | 1029 mb (30.39 in) | N 7 kph (N 4.6 mph) | 0.00 mm (0.00 in) | 8SM |
| | KGPI 261855Z 36004KT 8SM OVC020 M09/M13 A3040 RMK AO2 SNB1759E33 SLP351 P0000 T10891133 $ |
| 10:55 MST |  Overcast | -9°C / 16°F | -13°C / 9°F | 73% | 1030 mb (30.42 in) | NNE 9 kph (NNE 5.8 mph) | 0.00 mm (0.00 in) | 7SM |
| | KGPI 261755Z 02005KT 7SM OVC020 M09/M13 A3041 RMK AO2 SNE26 SLP352 P0000 60000 T10891128 11089 21094 53001 $ |
| 09:55 MST |  Overcast Light Snow | -9°C / 16°F | -13°C / 9°F | 73% | 1029 mb (30.39 in) | N 13 kph (N 8.1 mph) | 0.00 mm (0.00 in) | 5SM |
| | KGPI 261655Z 01007KT 5SM -SN OVC020 M09/M13 A3040 RMK AO2 SNB46 SLP350 P0000 T10941133 $ |
| 08:55 MST |  Overcast | -9°C / 16°F | -13°C / 9°F | 73% | 1029 mb (30.39 in) | NNE 11 kph (NNE 6.9 mph) | - | 9SM |
| | KGPI 261555Z 02006KT 9SM OVC020 M09/M13 A3040 RMK AO2 SLP351 T10941133 $ |
| 07:55 MST |  Overcast | -9°C / 16°F | -13°C / 9°F | 73% | 1030 mb (30.42 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KGPI 261455Z 36004KT 10SM OVC020 M09/M13 A3041 RMK AO2 SLP351 T10941133 56005 $ |
| 06:55 MST |  Overcast | -9°C / 16°F | -13°C / 9°F | 73% | 1030 mb (30.42 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KGPI 261355Z AUTO 36004KT 10SM OVC020 M09/M13 A3041 RMK AO2 SLP351 T10891133 $ |
| 04:55 MST |  Overcast | -9°C / 16°F | -13°C / 9°F | 73% | 1030 mb (30.42 in) | N 9 kph (N 5.8 mph) | - | 10SM |
| | KGPI 261155Z AUTO 01005KT 10SM OVC022 M09/M13 A3043 RMK AO2 SLP350 T10891128 11089 21122 50001 |
| 03:55 MST |  Overcast | -9°C / 16°F | -12°C / 10°F | 79% | 1030 mb (30.42 in) | NNE 6 kph (NNE 3.5 mph) | - | 10SM |
| | KGPI 261055Z AUTO 02003KT 10SM OVC024 M09/M12 A3043 RMK AO2 SLP350 T10891122 |
| 02:55 MST |  Overcast | -9°C / 16°F | -12°C / 10°F | 79% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KGPI 260955Z AUTO 00000KT 10SM OVC024 M09/M12 A3043 RMK AO2 SLP350 T10941122 |
| 01:55 MST |  Overcast | -11°C / 12°F | -14°C / 7°F | 79% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KGPI 260855Z AUTO 00000KT 10SM OVC026 M11/M14 A3042 RMK AO2 SLP351 T11111139 58002 |
| 00:55 MST |  Overcast | -12°C / 10°F | -14°C / 7°F | 85% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KGPI 260755Z AUTO 00000KT 10SM OVC028 M12/M14 A3043 RMK AO2 SLP357 T11221144 |
| 00:08 MST |  Overcast | -12°C / 10°F | -14°C / 7°F | 85% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KGPI 260708Z AUTO 00000KT 10SM OVC028 M12/M14 A3043 RMK AO2 |