| 19:55 MST |  Partly Cloudy | -13°C / 9°F | -14°C / 7°F | 92% | 1006 mb (29.71 in) | Calm | - | 8SM |
| | KGPI 120255Z 00000KT 8SM FEW110 M13/M14 A2970 RMK AO2 SLP115 T11281144 56008 |
| 18:55 MST |  Mostly Cloudy | -11°C / 12°F | -13°C / 9°F | 85% | 1006 mb (29.71 in) | Calm | - | 9SM |
| | KGPI 120155Z 00000KT 9SM BKN110 M11/M13 A2970 RMK AO2 SLP114 T11111133 |
| 17:55 MST |  Overcast | -11°C / 12°F | -14°C / 7°F | 79% | 1006 mb (29.71 in) | Calm | - | 10SM |
| | KGPI 120055Z 00000KT 10SM OVC120 M11/M14 A2971 RMK AO2 SLP117 T11111139 |
| 16:55 MST |  Mostly Cloudy | -7°C / 19°F | -13°C / 9°F | 63% | 1006 mb (29.71 in) | Calm | - | 10SM |
| | KGPI 112355Z 00000KT 10SM SCT065 BKN120 M07/M13 A2972 RMK AO2 SLP112 T10721128 11056 21106 56010 |
| 15:55 MST |  Partly Cloudy | -6°C / 21°F | -12°C / 10°F | 63% | 1007 mb (29.74 in) | Calm | - | 10SM |
| | KGPI 112255Z 00000KT 10SM FEW120 M06/M12 A2973 RMK AO2 SLP112 T10561122 |
| 14:55 MST |  Clear | -6°C / 21°F | -12°C / 10°F | 63% | 1007 mb (29.74 in) | Calm | - | 10SM |
| | KGPI 112155Z 00000KT 10SM CLR M06/M12 A2974 RMK AO2 SLP116 T10611122 |
| 13:55 MST |  Partly Cloudy | -6°C / 21°F | -12°C / 10°F | 63% | 1008 mb (29.77 in) | Calm | - | 10SM |
| | KGPI 112055Z 00000KT 10SM FEW110 M06/M12 A2976 RMK AO2 SLP120 T10611122 56027 |
| 12:55 MST |  Clear | -7°C / 19°F | -12°C / 10°F | 68% | 1008 mb (29.77 in) | Calm | - | 10SM |
| | KGPI 111955Z 00000KT 10SM CLR M07/M12 A2978 RMK AO2 SLP129 T10721117 $ |
| 11:55 MST |  Overcast | -9°C / 16°F | -12°C / 10°F | 79% | 1009 mb (29.8 in) | Calm | - | 10SM |
| | KGPI 111855Z 00000KT 10SM OVC110 M09/M12 A2981 RMK AO2 SLP144 T10891117 |
| 10:55 MST |  Overcast | -11°C / 12°F | -13°C / 9°F | 85% | 1010 mb (29.83 in) | Calm | - | 10SM |
| | KGPI 111755Z 00000KT 10SM OVC100 M11/M13 A2984 RMK AO2 SLP156 T11061128 11106 21156 58002 $ |
| 09:55 MST |  Partly Cloudy | -12°C / 10°F | -14°C / 7°F | 85% | 1011 mb (29.85 in) | Calm | - | 10SM |
| | KGPI 111655Z 00000KT 10SM SCT110 M12/M14 A2985 RMK AO2 SLP162 T11221144 $ |
| 08:55 MST |  Partly Cloudy | -14°C / 7°F | -16°C / 3°F | 85% | 1011 mb (29.85 in) | Calm | - | 10SM |
| | KGPI 111555Z 00000KT 10SM FEW110 M14/M16 A2985 RMK AO2 SLP164 T11391161 |
| 07:55 MST |  Clear | -15°C / 5°F | -17°C / 1°F | 85% | 1011 mb (29.85 in) | Calm | - | 10SM |
| | KGPI 111455Z AUTO 00000KT 10SM CLR M15/M17 A2985 RMK AO2 SLP163 T11501172 55004 |
| 07:37 MST |  Partly Cloudy | -16°C / 3°F | -18°C / 0°F | 85% | 1011 mb (29.85 in) | Calm | - | 9SM |
| | KGPI 111437Z AUTO 00000KT 9SM FEW001 M16/M18 A2985 RMK AO2 |
| 06:55 MST |  Mostly Cloudy | -15°C / 5°F | -17°C / 1°F | 85% | 1011 mb (29.85 in) | Calm | - | 10SM |
| | KGPI 111355Z AUTO 00000KT 10SM BKN110 M15/M17 A2985 RMK AO2 SLP164 T11501167 |
| 05:55 MST |  Partly Cloudy | -14°C / 7°F | -17°C / 1°F | 78% | 1011 mb (29.85 in) | Calm | - | 9SM |
| | KGPI 111255Z AUTO 00000KT 9SM FEW120 M14/M17 A2986 RMK AO2 SLP164 T11441167 |
| 04:55 MST |  Partly Cloudy | -12°C / 10°F | -13°C / 9°F | 92% | 1011 mb (29.85 in) | Calm | - | 10SM |
| | KGPI 111155Z AUTO 00000KT 10SM SCT075 M12/M13 A2986 RMK AO2 SLP162 70001 T11171133 11100 21122 58005 |
| 03:55 MST |  Overcast | -11°C / 12°F | -13°C / 9°F | 85% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGPI 111055Z AUTO 00000KT 10SM OVC080 M11/M13 A2988 RMK AO2 SLP166 T11061128 |
| 02:55 MST |  Overcast | -11°C / 12°F | -13°C / 9°F | 85% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGPI 110955Z AUTO 00000KT 10SM OVC080 M11/M13 A2988 RMK AO2 SLP168 T11061128 |
| 01:55 MST |  Overcast | -11°C / 12°F | -13°C / 9°F | 85% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGPI 110855Z AUTO 00000KT 10SM BKN070 OVC085 M11/M13 A2988 RMK AO2 SLP167 T11061128 56011 |
| 00:55 MST |  Overcast | -10°C / 14°F | -12°C / 10°F | 85% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGPI 110755Z AUTO 00000KT 10SM OVC090 M10/M12 A2989 RMK AO2 SLP170 T11001122 |