| 15:15 MST |  Partly Cloudy | -7°C / 19°F | -19°C / -2°F | 38% | 1012 mb (29.88 in) | NW 17 kph (NW 10.4 mph) | - | 10SM |
| | KGUC 252215Z AUTO 30009G18KT 10SM FEW060 M07/M19 A2989 RMK AO1 |
| 14:55 MST |  Clear | -8°C / 18°F | -19°C / -2°F | 41% | 1012 mb (29.88 in) | NNW 22 kph (NNW 13.8 mph) | - | 10SM |
| | KGUC 252155Z AUTO 34012KT 10SM CLR M08/M19 A2988 RMK AO1 |
| 14:35 MST |  Clear | -8°C / 18°F | -18°C / 0°F | 45% | 1012 mb (29.88 in) | NNW 20 kph (NNW 12.7 mph) | - | 10SM |
| | KGUC 252135Z AUTO 34011G18KT 10SM CLR M08/M18 A2988 RMK AO1 |
| 14:15 MST |  Clear | -8°C / 18°F | -18°C / 0°F | 45% | 1012 mb (29.88 in) | N 17 kph (N 10.4 mph) | - | 10SM |
| | KGUC 252115Z AUTO 35009G17KT 10SM CLR M08/M18 A2987 RMK AO1 |
| 13:55 MST |  Partly Cloudy | -8°C / 18°F | -18°C / 0°F | 45% | 1012 mb (29.88 in) | N 20 kph (N 12.7 mph) | - | 10SM |
| | KGUC 252055Z AUTO 35011G16KT 10SM SCT070 M08/M18 A2987 RMK AO1 57010 |
| 13:35 MST |  Partly Cloudy | -7°C / 19°F | -18°C / 0°F | 42% | 1011 mb (29.85 in) | N 22 kph (N 13.8 mph) | - | 10SM |
| | KGUC 252035Z AUTO 01012G16KT 10SM SCT070 M07/M18 A2986 RMK AO1 |
| 13:15 MST |  Partly Cloudy | -7°C / 19°F | -19°C / -2°F | 38% | 1011 mb (29.85 in) | N 22 kph (N 13.8 mph) | - | 10SM |
| | KGUC 252015Z AUTO 35012G18KT 10SM FEW070 M07/M19 A2986 RMK AO1 |
| 12:55 MST |  Partly Cloudy | -7°C / 19°F | -20°C / -4°F | 35% | 1011 mb (29.85 in) | NNW 26 kph (NNW 16.1 mph) | - | 10SM |
| | KGUC 251955Z AUTO 34014G20KT 10SM SCT070 M07/M20 A2986 RMK AO1 |
| 12:35 MST |  Partly Cloudy | -7°C / 19°F | -19°C / -2°F | 38% | 1012 mb (29.88 in) | W 13 kph (W 8.1 mph) | - | 10SM |
| | KGUC 251935Z AUTO 28007G27KT 190V300 10SM SCT070 M07/M19 A2987 RMK AO1 |
| 12:15 MST |  Mostly Cloudy | -8°C / 18°F | -19°C / -2°F | 41% | 1012 mb (29.88 in) | NW 15 kph (NW 9.2 mph) | - | 10SM |
| | KGUC 251915Z AUTO 32008KT 10SM BKN085 M08/M19 A2987 RMK AO1 |
| 11:55 MST |  Partly Cloudy | -7°C / 19°F | -19°C / -2°F | 38% | 1012 mb (29.88 in) | NNW 26 kph (NNW 16.1 mph) | - | 10SM |
| | KGUC 251855Z AUTO 33014G20KT 10SM SCT085 M07/M19 A2989 RMK AO1 |
| 11:35 MST |  Clear | -8°C / 18°F | -18°C / 0°F | 45% | 1013 mb (29.91 in) | E 11 kph (E 6.9 mph) | - | 10SM |
| | KGUC 251835Z AUTO 10006KT 10SM CLR M08/M18 A2990 RMK AO1 |
| 11:15 MST |  Clear | -8°C / 18°F | -18°C / 0°F | 45% | 1012 mb (29.88 in) | Calm | - | 10SM |
| | KGUC 251815Z AUTO 00000KT 10SM CLR M08/M18 A2989 RMK AO1 |
| 10:55 MST |  Clear | -8°C / 18°F | -17°C / 1°F | 49% | 1013 mb (29.91 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KGUC 251755Z AUTO 18003KT 10SM CLR M08/M17 A2990 RMK AO1 11080 21250 57007 |
| 10:35 MST |  Clear | -8°C / 18°F | -16°C / 3°F | 53% | 1013 mb (29.91 in) | W 7 kph (W 4.6 mph) | - | 10SM |
| | KGUC 251735Z AUTO 27004KT 10SM CLR M08/M16 A2991 RMK AO1 |
| 10:15 MST |  Clear | -9°C / 16°F | -16°C / 3°F | 57% | 1013 mb (29.91 in) | SSW 17 kph (SSW 10.4 mph) | - | 10SM |
| | KGUC 251715Z AUTO 24009G15KT 10SM CLR M09/M16 A2990 RMK AO1 |
| 09:55 MST |  Clear | -11°C / 12°F | -14°C / 7°F | 79% | 1013 mb (29.91 in) | W 7 kph (W 4.6 mph) | - | 10SM |
| | KGUC 251655Z AUTO 27004KT 10SM CLR M11/M14 A2991 RMK AO1 |
| 09:35 MST |  Clear | -13°C / 9°F | -13°C / 9°F | 100% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGUC 251635Z AUTO 00000KT 10SM CLR M13/M13 A2991 RMK AO1 |
| 09:15 MST |  Clear | -17°C / 1°F | -26°C / -15°F | 46% | 1013 mb (29.91 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KGUC 251615Z AUTO 35003KT 10SM CLR M17/M26 A2992 RMK AO1 |
| 08:55 MST |  Clear | -18°C / 0°F | N/A | N/A | 1013 mb (29.91 in) | Calm | - | 9SM |
| | KGUC 251555Z AUTO 00000KT 9SM CLR M18/ A2992 RMK AO1 |
| 08:35 MST |  Clear | -22°C / -8°F | -31°C / -24°F | 44% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGUC 251535Z AUTO 00000KT 10SM CLR M22/M31 A2992 RMK AO1 |
| 08:15 MST |  Partly Cloudy | -24°C / -11°F | N/A | N/A | 1013 mb (29.91 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KGUC 251515Z AUTO 15003KT 10SM FEW060 M24/ A2991 RMK AO1 |
| 07:55 MST |  Mostly Cloudy | -23°C / -9°F | N/A | N/A | 1013 mb (29.91 in) | NNE 6 kph (NNE 3.5 mph) | - | 10SM |
| | KGUC 251455Z AUTO 02003KT 10SM BKN060 M23/ A2992 RMK AO1 52007 |
| 07:35 MST |  Partly Cloudy | -23°C / -9°F | N/A | N/A | 1013 mb (29.91 in) | N 9 kph (N 5.8 mph) | - | 10SM |
| | KGUC 251435Z AUTO 36005KT 10SM SCT060 M23/ A2991 RMK AO1 |
| 07:15 MST |  Partly Cloudy | -24°C / -11°F | N/A | N/A | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGUC 251415Z AUTO 00000KT 10SM FEW060 M24/ A2991 RMK AO1 |
| 06:55 MST |  Clear | -23°C / -9°F | -34°C / -29°F | 36% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGUC 251355Z AUTO 00000KT 10SM CLR M23/M34 A2991 RMK AO1 |
| 06:35 MST |  Mostly Cloudy | -23°C / -9°F | -28°C / -18°F | 64% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGUC 251335Z AUTO 00000KT 10SM BKN050 M23/M28 A2991 RMK AO1 |
| 06:15 MST |  Overcast | -24°C / -11°F | -28°C / -18°F | 70% | 1013 mb (29.91 in) | ENE 7 kph (ENE 4.6 mph) | - | 10SM |
| | KGUC 251315Z AUTO 06004KT 10SM OVC050 M24/M28 A2991 RMK AO1 |
| 05:55 MST |  Overcast | -24°C / -11°F | -31°C / -24°F | 52% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGUC 251255Z AUTO 00000KT 10SM OVC050 M24/M31 A2991 RMK AO1 |
| 05:35 MST |  Overcast | -22°C / -8°F | -22°C / -8°F | 100% | 1013 mb (29.91 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KGUC 251235Z AUTO 01004KT 10SM BKN050 OVC060 M22/M22 A2991 RMK AO1 |
| 05:15 MST |  Mostly Cloudy | -22°C / -8°F | -31°C / -24°F | 44% | 1013 mb (29.91 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KGUC 251215Z AUTO 06003KT 10SM BKN060 M22/M31 A2990 RMK AO1 |
| 04:55 MST |  Clear | -22°C / -8°F | N/A | N/A | 1013 mb (29.91 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KGUC 251155Z AUTO 01003KT 10SM CLR M22/ A2990 RMK AO1 11200 21230 57014 |
| 04:35 MST |  Clear | -23°C / -9°F | -31°C / -24°F | 48% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGUC 251135Z AUTO 00000KT 10SM CLR M23/M31 A2990 RMK AO1 |
| 04:15 MST |  Partly Cloudy | -22°C / -8°F | N/A | N/A | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGUC 251115Z AUTO 00000KT 10SM FEW060 M22/ A2991 RMK AO1 |
| 03:55 MST |  Partly Cloudy | -22°C / -8°F | -29°C / -20°F | 53% | 1013 mb (29.91 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KGUC 251055Z AUTO 34003KT 10SM FEW060 M22/M29 A2991 RMK AO1 |
| 03:35 MST |  Clear | -22°C / -8°F | N/A | N/A | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KGUC 251035Z AUTO 00000KT 10SM CLR M22/ A2991 RMK AO1 |
| 03:15 MST |  Clear | -23°C / -9°F | -31°C / -24°F | 48% | 1013 mb (29.91 in) | S 11 kph (S 6.9 mph) | - | 10SM |
| | KGUC 251015Z AUTO 17006KT 10SM CLR M23/M31 A2992 RMK AO1 |
| 02:55 MST |  Clear | -21°C / -6°F | -21°C / -6°F | 100% | 1014 mb (29.94 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KGUC 250955Z AUTO 01003KT 10SM CLR M21/M21 A2993 RMK AO1 |
| 02:35 MST |  Partly Cloudy | -21°C / -6°F | -27°C / -17°F | 59% | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KGUC 250935Z AUTO 00000KT 10SM SCT085 M21/M27 A2993 RMK AO1 |
| 02:15 MST |  Overcast | -22°C / -8°F | N/A | N/A | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KGUC 250915Z AUTO 00000KT 10SM OVC085 M22/ A2993 RMK AO1 |
| 01:55 MST |  Overcast | -22°C / -8°F | -28°C / -18°F | 58% | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KGUC 250855Z AUTO 00000KT 10SM OVC085 M22/M28 A2994 RMK AO1 57010 |
| 01:35 MST |  Overcast | -22°C / -8°F | N/A | N/A | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KGUC 250835Z AUTO 00000KT 10SM OVC085 M22/ A2995 RMK AO1 |
| 01:15 MST |  Overcast | -23°C / -9°F | -28°C / -18°F | 64% | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KGUC 250815Z AUTO 00000KT 10SM OVC085 M23/M28 A2994 RMK AO1 |
| 00:55 MST |  Overcast | -21°C / -6°F | -26°C / -15°F | 64% | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KGUC 250755Z AUTO 00000KT 10SM OVC085 M21/M26 A2995 RMK AO1 |
| 00:35 MST |  Mostly Cloudy | -21°C / -6°F | -22°C / -8°F | 92% | 1015 mb (29.97 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KGUC 250735Z AUTO 36003KT 10SM BKN085 M21/M22 A2996 RMK AO1 |
| 00:15 MST |  Clear | -21°C / -6°F | -29°C / -20°F | 49% | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KGUC 250715Z AUTO 00000KT 10SM CLR M21/M29 A2995 RMK AO1 |