| 07:02 MST |  Overcast Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1027 mb (30.33 in) | Calm | - | 5SM |
| | KGPI 251402Z AUTO 00000KT 5SM BR BKN026 OVC033 01/00 A3034 RMK AO2 |
| 06:55 MST |  Overcast Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1027 mb (30.33 in) | Calm | - | 5SM |
| | KGPI 251355Z AUTO 00000KT 5SM BR SCT026 OVC033 01/00 A3034 RMK AO2 SLP302 T00060000 |
| 06:13 MST |  Overcast Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1027 mb (30.33 in) | Calm | - | 6SM |
| | KGPI 251313Z AUTO 00000KT 6SM BR BKN030 OVC035 01/00 A3034 RMK AO2 $ |
| 05:55 MST |  Overcast Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1027 mb (30.33 in) | Calm | - | 5SM |
| | KGPI 251255Z AUTO 00000KT 5SM BR OVC028 01/00 A3034 RMK AO2 SLP301 T00110000 |
| 04:55 MST |  Overcast Fog And Mist | 1°C / 34°F | -1°C / 30°F | 87% | 1027 mb (30.33 in) | Calm | - | 5SM |
| | KGPI 251155Z AUTO 00000KT 5SM BR OVC028 01/M01 A3034 RMK AO2 SLP301 70001 T00061006 10011 20000 58003 |
| 04:13 MST |  Overcast Fog And Mist | 1°C / 34°F | -1°C / 30°F | 87% | 1028 mb (30.36 in) | Calm | - | 5SM |
| | KGPI 251113Z AUTO 00000KT 5SM BR OVC028 01/M01 A3036 RMK AO2 |
| 03:55 MST |  Overcast Fog And Mist | 1°C / 34°F | -1°C / 30°F | 87% | 1028 mb (30.36 in) | Calm | - | 5SM |
| | KGPI 251055Z AUTO 00000KT 5SM BR OVC030 01/M01 A3036 RMK AO2 SLP308 T00061006 |
| 02:55 MST |  Overcast Fog And Mist | 1°C / 34°F | -1°C / 30°F | 87% | 1028 mb (30.36 in) | Calm | - | 5SM |
| | KGPI 250955Z AUTO 00000KT 5SM BR OVC030 01/M01 A3035 RMK AO2 SLP304 T00111006 |
| 01:55 MST |  Overcast Fog And Mist | 1°C / 34°F | -1°C / 30°F | 87% | 1028 mb (30.36 in) | Calm | - | 6SM |
| | KGPI 250855Z AUTO 00000KT 6SM BR OVC030 01/M01 A3036 RMK AO2 SLP304 T00061006 50000 |
| 00:55 MST |  Overcast Fog And Mist | 1°C / 34°F | -1°C / 30°F | 87% | 1028 mb (30.36 in) | Calm | - | 5SM |
| | KGPI 250755Z AUTO 00000KT 5SM BR OVC030 01/M01 A3036 RMK AO2 SLP307 T00061006 |