| 15:35 MST |  Clear | -13°C / 9°F | -28°C / -18°F | 27% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KGUC 112235Z AUTO 00000KT 10SM CLR M13/M28 A3007 RMK AO1 |
| 15:15 MST |  Clear | -13°C / 9°F | -29°C / -20°F | 25% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KGUC 112215Z AUTO 00000KT 10SM CLR M13/M29 A3007 RMK AO1 |
| 14:55 MST |  Clear | -13°C / 9°F | -28°C / -18°F | 27% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KGUC 112155Z AUTO 00000KT 10SM CLR M13/M28 A3007 RMK AO1 |
| 14:35 MST |  Clear | -13°C / 9°F | -16°C / 3°F | 78% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KGUC 112135Z AUTO 00000KT 10SM CLR M13/M16 A3007 RMK AO1 |
| 14:15 MST |  Clear | -14°C / 7°F | -24°C / -11°F | 43% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KGUC 112115Z AUTO 00000KT 10SM CLR M14/M24 A3007 RMK AO1 |
| 13:55 MST |  Clear | -14°C / 7°F | -23°C / -9°F | 47% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KGUC 112055Z AUTO 00000KT 10SM CLR M14/M23 A3008 RMK AO1 57034 |
| 13:35 MST |  Clear | -14°C / 7°F | -24°C / -11°F | 43% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KGUC 112035Z AUTO 00000KT 10SM CLR M14/M24 A3008 RMK AO1 |
| 13:15 MST |  Clear | -14°C / 7°F | -24°C / -11°F | 43% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KGUC 112015Z AUTO 00000KT 10SM CLR M14/M24 A3009 RMK AO1 |
| 12:55 MST |  Clear | -15°C / 5°F | -24°C / -11°F | 46% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KGUC 111955Z AUTO 00000KT 10SM CLR M15/M24 A3010 RMK AO1 |
| 12:35 MST |  Clear | -16°C / 3°F | -25°C / -13°F | 46% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KGUC 111935Z AUTO 00000KT 10SM CLR M16/M25 A3011 RMK AO1 |
| 12:15 MST |  Clear | -17°C / 1°F | -26°C / -15°F | 46% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KGUC 111915Z AUTO 00000KT 10SM CLR M17/M26 A3012 RMK AO1 |
| 11:55 MST |  Clear | -17°C / 1°F | -26°C / -15°F | 46% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KGUC 111855Z AUTO 00000KT 10SM CLR M17/M26 A3013 RMK AO1 |
| 11:35 MST |  Clear | -18°C / 0°F | -28°C / -18°F | 41% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KGUC 111835Z AUTO 00000KT 10SM CLR M18/M28 A3015 RMK AO1 |
| 11:15 MST |  Clear | -21°C / -6°F | -32°C / -26°F | 37% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KGUC 111815Z AUTO 00000KT 10SM CLR M21/M32 A3016 RMK AO1 |
| 10:55 MST |  Clear | -21°C / -6°F | -32°C / -26°F | 37% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KGUC 111755Z AUTO 00000KT 10SM CLR M21/M32 A3018 RMK AO1 11190 21310 57003 |
| 10:35 MST |  Clear | -22°C / -8°F | -34°C / -29°F | 33% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KGUC 111735Z AUTO 00000KT 10SM CLR M22/M34 A3020 RMK AO1 |
| 10:15 MST |  Clear | -23°C / -9°F | N/A | N/A | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KGUC 111715Z AUTO 00000KT 10SM CLR M23/ A3020 RMK AO1 |
| 09:55 MST |  Clear | -24°C / -11°F | N/A | N/A | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KGUC 111655Z AUTO 00000KT 10SM CLR M24/ A3021 RMK AO1 |
| 09:35 MST |  Clear | -26°C / -15°F | N/A | N/A | 1023 mb (30.21 in) | Calm | - | 9SM |
| | KGUC 111635Z AUTO 00000KT 9SM CLR M26/ A3021 RMK AO1 |
| 09:15 MST |  Clear | -27°C / -17°F | -28°C / -18°F | 91% | 1023 mb (30.21 in) | Calm | - | 9SM |
| | KGUC 111615Z AUTO 00000KT 9SM CLR M27/M28 A3022 RMK AO1 |
| 08:55 MST |  Clear | -28°C / -18°F | -31°C / -24°F | 75% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KGUC 111555Z AUTO 00000KT 10SM CLR M28/M31 A3022 RMK AO1 |
| 08:35 MST |  Clear | -28°C / -18°F | N/A | N/A | 1023 mb (30.21 in) | Calm | - | 3SM |
| | KGUC 111535Z AUTO 00000KT 3SM CLR M28/ A3021 RMK AO1 |
| 08:15 MST |  Clear | -29°C / -20°F | -33°C / -27°F | 68% | 1023 mb (30.21 in) | Calm | - | 2SM |
| | KGUC 111515Z AUTO 00000KT 2SM CLR M29/M33 A3021 RMK AO1 |
| 07:55 MST |  Clear | -29°C / -20°F | N/A | N/A | 1022 mb (30.18 in) | Calm | - | 5SM |
| | KGUC 111455Z AUTO 00000KT 5SM CLR M29/ A3019 RMK AO1 52010 |
| 07:35 MST |  Clear | -29°C / -20°F | N/A | N/A | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KGUC 111435Z AUTO 00000KT 10SM CLR M29/ A3018 RMK AO1 |
| 07:15 MST |  Partly Cloudy | -31°C / -24°F | N/A | N/A | 1022 mb (30.18 in) | Calm | - | 2 1/2SM |
| | KGUC 111415Z AUTO 00000KT 2 1/2SM FEW003 M31/ A3018 RMK AO1 |
| 06:55 MST |  Clear | -29°C / -20°F | N/A | N/A | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KGUC 111355Z AUTO 00000KT 10SM CLR M29/ A3017 RMK AO1 |
| 06:35 MST |  Clear | -29°C / -20°F | N/A | N/A | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KGUC 111335Z AUTO 00000KT 10SM CLR M29/ A3018 RMK AO1 |
| 06:15 MST |  Clear | -30°C / -22°F | N/A | N/A | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KGUC 111315Z AUTO 00000KT 10SM CLR M30/ A3017 RMK AO1 |
| 05:55 MST |  Clear | -30°C / -22°F | N/A | N/A | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KGUC 111255Z AUTO 00000KT 10SM CLR M30/ A3016 RMK AO1 |
| 05:35 MST |  Clear | -29°C / -20°F | N/A | N/A | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KGUC 111235Z AUTO 00000KT 10SM CLR M29/ A3016 RMK AO1 |
| 05:15 MST |  Clear | -29°C / -20°F | N/A | N/A | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KGUC 111215Z AUTO 00000KT 10SM CLR M29/ A3016 RMK AO1 |
| 04:55 MST |  Clear | -30°C / -22°F | N/A | N/A | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KGUC 111155Z AUTO 00000KT 10SM CLR M30/ A3016 RMK AO1 11240 21300 52014 |
| 04:35 MST |  Clear | -29°C / -20°F | N/A | N/A | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KGUC 111135Z AUTO 00000KT 10SM CLR M29/ A3015 RMK AO1 |
| 04:15 MST |  Clear | -29°C / -20°F | N/A | N/A | 1021 mb (30.15 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KGUC 111115Z AUTO 06003KT 10SM CLR M29/ A3015 RMK AO1 |
| 03:55 MST |  Clear | -28°C / -18°F | N/A | N/A | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KGUC 111055Z AUTO 00000KT 10SM CLR M28/ A3015 RMK AO1 |
| 03:35 MST |  Clear | -28°C / -18°F | N/A | N/A | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KGUC 111035Z AUTO 00000KT 10SM CLR M28/ A3015 RMK AO1 |
| 03:15 MST |  Clear | -28°C / -18°F | N/A | N/A | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KGUC 111015Z AUTO 00000KT 10SM CLR M28/ A3015 RMK AO1 |
| 02:55 MST |  Clear | -28°C / -18°F | N/A | N/A | 1021 mb (30.15 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KGUC 110955Z AUTO 06003KT 10SM CLR M28/ A3014 RMK AO1 |
| 02:35 MST |  Clear | -28°C / -18°F | N/A | N/A | 1020 mb (30.12 in) | E 6 kph (E 3.5 mph) | - | 10SM |
| | KGUC 110935Z AUTO 08003KT 10SM CLR M28/ A3013 RMK AO1 |
| 02:15 MST |  Clear | -28°C / -18°F | N/A | N/A | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KGUC 110915Z AUTO 00000KT 10SM CLR M28/ A3013 RMK AO1 |
| 01:55 MST |  Clear | -27°C / -17°F | N/A | N/A | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KGUC 110855Z AUTO 00000KT 10SM CLR M27/ A3012 RMK AO1 52010 |
| 01:35 MST |  Clear | -27°C / -17°F | N/A | N/A | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KGUC 110835Z AUTO 00000KT 10SM CLR M27/ A3011 RMK AO1 |
| 01:15 MST |  Clear | -27°C / -17°F | N/A | N/A | 1020 mb (30.12 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KGUC 110815Z AUTO 07003KT 10SM CLR M27/ A3011 RMK AO1 |
| 00:55 MST |  Clear | -27°C / -17°F | N/A | N/A | 1019 mb (30.09 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KGUC 110755Z AUTO 07003KT 10SM CLR M27/ A3010 RMK AO1 |
| 00:35 MST |  Clear | -27°C / -17°F | N/A | N/A | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KGUC 110735Z AUTO 00000KT 10SM CLR M27/ A3010 RMK AO1 |
| 00:15 MST |  Clear | -26°C / -15°F | N/A | N/A | 1019 mb (30.09 in) | Calm | - | 9SM |
| | KGUC 110715Z AUTO 00000KT 9SM CLR M26/ A3010 RMK AO1 |