| 15:53 MST |  Partly Cloudy | -18°C / 0°F | -21°C / -6°F | 78% | 1026 mb (30.3 in) | NW 28 kph (NW 17.3 mph) | - | 10SM |
| | KGGW 232253Z AUTO 31015KT 10SM SCT014 M18/M21 A3031 RMK AO2 SLP319 T11781211 TSNO |
| 15:49 MST |  Partly Cloudy | -17°C / 1°F | -21°C / -6°F | 71% | 1026 mb (30.3 in) | NW 30 kph (NW 18.4 mph) | - | 10SM |
| | KGGW 232249Z AUTO 31016KT 10SM SCT014 M17/M21 A3031 RMK AO2 TSNO |
| 15:28 MST |  Mostly Cloudy | -17°C / 1°F | -20°C / -4°F | 78% | 1026 mb (30.3 in) | NW 30 kph (NW 18.4 mph) | - | 10SM |
| | KGGW 232228Z AUTO 31016G25KT 10SM BKN014 BKN020 BKN100 M17/M20 A3031 RMK AO2 TSNO |
| 14:53 MST |  Overcast | -16°C / 3°F | -19°C / -2°F | 78% | 1026 mb (30.3 in) | NW 37 kph (NW 23 mph) | - | 9SM |
| | KGGW 232153Z AUTO 31020G23KT 9SM OVC095 M16/M19 A3029 RMK AO2 PK WND 31027/2141 SLP308 T11611194 TSNO |
| 13:53 MST |  Overcast | -16°C / 3°F | -19°C / -2°F | 78% | 1025 mb (30.27 in) | NW 33 kph (NW 20.7 mph) | 0.00 mm (0.00 in) | 10SM |
| | KGGW 232053Z AUTO 31018G25KT 10SM SCT014 OVC095 M16/M19 A3026 RMK AO2 PK WND 31026/1956 UPB08E13 SLP295 P0000 60000 T11561189 53009 TSNO |
| 13:26 MST |  Overcast | -16°C / 3°F | -18°C / 0°F | 85% | 1024 mb (30.24 in) | NW 30 kph (NW 18.4 mph) | 0.00 mm (0.00 in) | 10SM |
| | KGGW 232026Z AUTO 31016KT 10SM BKN014 BKN026 OVC090 M16/M18 A3025 RMK AO2 PK WND 31026/1956 UPB08E13 P0000 TSNO |
| 13:02 MST |  Overcast | -15°C / 5°F | -18°C / 0°F | 78% | 1024 mb (30.24 in) | NW 37 kph (NW 23 mph) | - | 10SM |
| | KGGW 232002Z AUTO 31020G26KT 10SM FEW016 BKN026 OVC033 M15/M18 A3024 RMK AO2 PK WND 31026/1956 TSNO |
| 12:53 MST |  Overcast | -15°C / 5°F | -18°C / 0°F | 78% | 1024 mb (30.24 in) | NW 37 kph (NW 23 mph) | 0.00 mm (0.00 in) | 9SM |
| | KGGW 231953Z AUTO 31020G27KT 9SM FEW016 SCT022 OVC033 M15/M18 A3024 RMK AO2 PK WND 31029/1912 UPB31E48SNE31 SLP290 P0000 T11501183 TSNO |
| 12:26 MST |  Overcast Light Snow | -15°C / 5°F | -17°C / 1°F | 85% | 1024 mb (30.24 in) | NW 39 kph (NW 24.2 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGGW 231926Z AUTO 31021G27KT 3SM -SN BR FEW013 BKN033 OVC050 M15/M17 A3024 RMK AO2 PK WND 31029/1912 P0000 TSNO |
| 12:24 MST |  Overcast Light Snow | -15°C / 5°F | -17°C / 1°F | 85% | 1024 mb (30.24 in) | NW 43 kph (NW 26.5 mph) | 0.00 mm (0.00 in) | 2 1/2SM |
| | KGGW 231924Z AUTO 31023G27KT 2 1/2SM -SN BR FEW013 BKN028 OVC050 M15/M17 A3024 RMK AO2 PK WND 31029/1912 P0000 TSNO |
| 12:01 MST |  Overcast Light Snow | -14°C / 7°F | -16°C / 3°F | 85% | 1024 mb (30.24 in) | NW 30 kph (NW 18.4 mph) | 0.00 mm (0.00 in) | 1 3/4SM |
| | KGGW 231901Z AUTO 30016G22KT 1 3/4SM -SN BR SCT013 OVC036 M14/M16 A3024 RMK AO2 P0000 TSNO |
| 11:51 MST |  Overcast Light Snow | -14°C / 7°F | -16°C / 3°F | 85% | 1024 mb (30.24 in) | NW 32 kph (NW 19.6 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGGW 231851Z AUTO 31017KT 3SM -SN BR BKN033 OVC041 M14/M16 A3024 RMK AO2 SLP287 P0000 T11391161 TSNO |
| 11:50 MST |  Overcast Light Snow | -14°C / 7°F | -16°C / 3°F | 85% | 1024 mb (30.24 in) | NW 30 kph (NW 18.4 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGGW 231850Z AUTO 31016KT 3SM -SN BR FEW010 BKN033 OVC041 M14/M16 A3024 RMK AO2 P0000 TSNO |
| 11:34 MST |  Overcast Light Snow | -14°C / 7°F | -16°C / 3°F | 85% | 1024 mb (30.24 in) | NW 30 kph (NW 18.4 mph) | 0.00 mm (0.00 in) | 1 1/2SM |
| | KGGW 231834Z AUTO 30016G25KT 1 1/2SM -SN BR SCT012 SCT021 OVC038 M14/M16 A3023 RMK AO2 P0000 TSNO |
| 11:16 MST |  Overcast Light Snow | -14°C / 7°F | -16°C / 3°F | 85% | 1024 mb (30.24 in) | NW 26 kph (NW 16.1 mph) | 0.00 mm (0.00 in) | 1 1/4SM |
| | KGGW 231816Z AUTO 31014KT 1 1/4SM -SN BR BKN014 OVC030 M14/M16 A3023 RMK AO2 P0000 TSNO |
| 11:08 MST |  Overcast Light Snow | -14°C / 7°F | -16°C / 3°F | 85% | 1024 mb (30.24 in) | NW 35 kph (NW 21.9 mph) | 0.00 mm (0.00 in) | 1 1/2SM |
| | KGGW 231808Z AUTO 31019G25KT 1 1/2SM -SN BR BKN016 OVC024 M14/M16 A3023 RMK AO2 P0000 TSNO |
| 10:53 MST |  Overcast Light Snow | -14°C / 7°F | -16°C / 3°F | 85% | 1024 mb (30.24 in) | NW 37 kph (NW 23 mph) | 0.00 mm (0.00 in) | 1 1/4SM |
| | KGGW 231753Z AUTO 31020G25KT 1 1/4SM -SN BR BKN016 OVC026 M14/M16 A3023 RMK AO2 PK WND 32026/1726 SLP283 P0000 60004 T11391161 11106 21139 53024 TSNO |
| 10:17 MST |  Overcast Light Snow | -13°C / 9°F | -15°C / 5°F | 85% | 1023 mb (30.21 in) | NW 28 kph (NW 17.3 mph) | 0.00 mm (0.00 in) | 1 1/2SM |
| | KGGW 231717Z AUTO 30015G24KT 1 1/2SM -SN BR FEW009 BKN028 OVC070 M13/M15 A3022 RMK AO2 P0000 TSNO |
| 10:14 MST |  Overcast Light Snow | -13°C / 9°F | -16°C / 3°F | 78% | 1023 mb (30.21 in) | NW 28 kph (NW 17.3 mph) | 0.00 mm (0.00 in) | 1 1/4SM |
| | KGGW 231714Z AUTO 31015G24KT 1 1/4SM -SN BR BKN028 BKN040 OVC070 M13/M16 A3022 RMK AO2 P0000 TSNO |
| 09:53 MST |  Overcast Light Snow | -13°C / 9°F | -15°C / 5°F | 85% | 1023 mb (30.21 in) | NW 30 kph (NW 18.4 mph) | 0.00 mm (0.00 in) | 1SM |
| | KGGW 231653Z AUTO 31016G25KT 1SM -SN BR SCT031 BKN040 OVC065 M13/M15 A3020 RMK AO2 SLP274 P0000 T11331150 TSNO |
| 09:40 MST |  Overcast Light Snow | -13°C / 9°F | -15°C / 5°F | 85% | 1023 mb (30.21 in) | NW 39 kph (NW 24.2 mph) | 0.00 mm (0.00 in) | 1SM |
| | KGGW 231640Z AUTO 32021KT 1SM -SN BR FEW014 BKN031 OVC065 M13/M15 A3020 RMK AO2 P0000 TSNO |
| 09:20 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1022 mb (30.18 in) | NW 32 kph (NW 19.6 mph) | 0.00 mm (0.00 in) | 1SM |
| | KGGW 231620Z AUTO 31017KT 1SM -SN BR BKN015 OVC024 M13/M14 A3019 RMK AO2 P0000 TSNO |
| 09:12 MST |  Obscured Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1022 mb (30.18 in) | NW 26 kph (NW 16.1 mph) | 0.00 mm (0.00 in) | 1/2SM |
| | KGGW 231612Z AUTO 31014KT 1/2SM -SN FZFG VV013 M13/M14 A3018 RMK AO2 P0000 TSNO |
| 09:05 MST |  Overcast Light Snow | -13°C / 9°F | -15°C / 5°F | 85% | 1022 mb (30.18 in) | NW 32 kph (NW 19.6 mph) | 0.00 mm (0.00 in) | 3/4SM |
| | KGGW 231605Z AUTO 31017G22KT 3/4SM -SN BR FEW006 OVC015 M13/M15 A3018 RMK AO2 P0000 TSNO |
| 08:53 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1022 mb (30.18 in) | NW 30 kph (NW 18.4 mph) | 0.25 mm (0.01 in) | 1 1/2SM |
| | KGGW 231553Z AUTO 31016G23KT 1 1/2SM -SN BR FEW006 OVC015 M13/M14 A3017 RMK AO2 SLP263 P0001 T11281144 TSNO |
| 08:51 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1022 mb (30.18 in) | NW 32 kph (NW 19.6 mph) | 0.25 mm (0.01 in) | 1 1/4SM |
| | KGGW 231551Z AUTO 31017G23KT 1 1/4SM -SN BR FEW006 OVC015 M13/M14 A3017 RMK AO2 P0001 TSNO |
| 08:46 MST |  Obscured Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1022 mb (30.18 in) | NW 28 kph (NW 17.3 mph) | 0.25 mm (0.01 in) | 1SM |
| | KGGW 231546Z AUTO 31015KT 1SM -SN BR VV009 M13/M14 A3017 RMK AO2 P0001 TSNO |
| 08:39 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1022 mb (30.18 in) | NW 28 kph (NW 17.3 mph) | 0.25 mm (0.01 in) | 1SM |
| | KGGW 231539Z AUTO 31015KT 1SM -SN BR FEW007 OVC010 M13/M14 A3017 RMK AO2 P0001 TSNO |
| 08:12 MST |  Overcast Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1021 mb (30.15 in) | NW 32 kph (NW 19.6 mph) | 0.25 mm (0.01 in) | 1/2SM |
| | KGGW 231512Z AUTO 31017KT 1/2SM SN FZFG BKN007 OVC017 M13/M14 A3016 RMK AO2 P0001 TSNO |
| 07:53 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1021 mb (30.15 in) | NW 37 kph (NW 23 mph) | 0.25 mm (0.01 in) | 1SM |
| | KGGW 231453Z AUTO 31020KT 1SM -SN BR OVC007 M13/M14 A3015 RMK AO2 SLP255 P0001 60003 T11281144 51021 TSNO |
| 07:07 MST |  Overcast Snow | -12°C / 10°F | -13°C / 9°F | 92% | 1021 mb (30.15 in) | NW 30 kph (NW 18.4 mph) | 0.00 mm (0.00 in) | 1/2SM |
| | KGGW 231407Z AUTO 32016KT 1/2SM SN FZFG BKN005 OVC010 M12/M13 A3014 RMK AO2 P0000 TSNO |
| 06:53 MST |  Overcast Light Snow | -12°C / 10°F | -13°C / 9°F | 92% | 1021 mb (30.15 in) | NW 30 kph (NW 18.4 mph) | 0.25 mm (0.01 in) | 3/4SM |
| | KGGW 231353Z AUTO 32016G23KT 3/4SM -SN BR SCT009 OVC012 M12/M13 A3014 RMK AO2 SLP249 P0001 T11171133 TSNO |
| 06:43 MST |  Overcast Light Snow | -12°C / 10°F | -13°C / 9°F | 92% | 1020 mb (30.12 in) | NW 28 kph (NW 17.3 mph) | 0.25 mm (0.01 in) | 3/4SM |
| | KGGW 231343Z AUTO 32015KT 3/4SM -SN BR BKN009 OVC016 M12/M13 A3013 RMK AO2 P0001 TSNO |
| 06:27 MST |  Overcast Light Snow | -11°C / 12°F | -13°C / 9°F | 85% | 1020 mb (30.12 in) | NW 24 kph (NW 15 mph) | 0.25 mm (0.01 in) | 1SM |
| | KGGW 231327Z AUTO 31013KT 1SM -SN BR FEW008 BKN017 OVC026 M11/M13 A3012 RMK AO2 P0001 TSNO |
| 05:59 MST |  Overcast Light Snow | -11°C / 12°F | -13°C / 9°F | 85% | 1020 mb (30.12 in) | NW 24 kph (NW 15 mph) | 0.00 mm (0.00 in) | 1 1/4SM |
| | KGGW 231259Z AUTO 32013KT 1 1/4SM -SN BR BKN013 BKN020 OVC036 M11/M13 A3011 RMK AO2 P0000 TSNO |
| 05:53 MST |  Overcast Light Snow | -11°C / 12°F | -13°C / 9°F | 85% | 1020 mb (30.12 in) | NW 22 kph (NW 13.8 mph) | 0.25 mm (0.01 in) | 1 1/2SM |
| | KGGW 231253Z AUTO 32012KT 1 1/2SM -SN BR SCT015 BKN020 OVC036 M11/M13 A3011 RMK AO2 SLP241 P0001 T11111128 TSNO |
| 05:46 MST |  Overcast Light Snow | -11°C / 12°F | -13°C / 9°F | 85% | 1020 mb (30.12 in) | NW 24 kph (NW 15 mph) | 0.25 mm (0.01 in) | 2SM |
| | KGGW 231246Z AUTO 32013KT 2SM -SN BR SCT015 OVC036 M11/M13 A3011 RMK AO2 P0001 TSNO |
| 05:38 MST |  Overcast Light Snow | -11°C / 12°F | -13°C / 9°F | 85% | 1019 mb (30.09 in) | NNW 24 kph (NNW 15 mph) | 0.25 mm (0.01 in) | 1 3/4SM |
| | KGGW 231238Z AUTO 33013KT 1 3/4SM -SN BR BKN015 OVC034 M11/M13 A3010 RMK AO2 P0001 TSNO |
| 05:31 MST |  Overcast Light Snow | -11°C / 12°F | -13°C / 9°F | 85% | 1019 mb (30.09 in) | NW 26 kph (NW 16.1 mph) | 0.25 mm (0.01 in) | 1 1/4SM |
| | KGGW 231231Z AUTO 32014KT 1 1/4SM -SN BR BKN015 OVC034 M11/M13 A3010 RMK AO2 P0001 TSNO |
| 05:15 MST |  Overcast Light Snow | -11°C / 12°F | -12°C / 10°F | 92% | 1019 mb (30.09 in) | NNW 28 kph (NNW 17.3 mph) | 0.25 mm (0.01 in) | 1 3/4SM |
| | KGGW 231215Z AUTO 33015KT 1 3/4SM -SN BR BKN021 BKN031 OVC050 M11/M12 A3009 RMK AO2 P0001 TSNO |
| 05:02 MST |  Overcast Light Snow | -11°C / 12°F | -12°C / 10°F | 92% | 1019 mb (30.09 in) | NNW 26 kph (NNW 16.1 mph) | 0.00 mm (0.00 in) | 2 1/2SM |
| | KGGW 231202Z AUTO 33014KT 2 1/2SM -SN BR FEW030 SCT042 OVC050 M11/M12 A3009 RMK AO2 P0000 TSNO |
| 04:53 MST |  Overcast Light Snow | -11°C / 12°F | -12°C / 10°F | 92% | 1019 mb (30.09 in) | NNW 30 kph (NNW 18.4 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGGW 231153Z AUTO 33016KT 3SM -SN BR FEW022 SCT044 OVC050 M11/M12 A3008 RMK AO2 SLP230 P0000 60000 T11061122 11056 21106 53019 TSNO |
| 04:39 MST |  Overcast Light Snow | -10°C / 14°F | -12°C / 10°F | 85% | 1018 mb (30.06 in) | NNW 30 kph (NNW 18.4 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGGW 231139Z AUTO 33016KT 3SM -SN BR FEW018 BKN045 OVC050 M10/M12 A3007 RMK AO2 P0000 TSNO |
| 04:34 MST |  Overcast Light Snow | -10°C / 14°F | -12°C / 10°F | 85% | 1018 mb (30.06 in) | NNW 35 kph (NNW 21.9 mph) | 0.00 mm (0.00 in) | 1 3/4SM |
| | KGGW 231134Z AUTO 33019KT 1 3/4SM -SN BR FEW018 SCT032 OVC045 M10/M12 A3007 RMK AO2 P0000 TSNO |
| 04:14 MST |  Overcast Light Snow | -9°C / 16°F | -11°C / 12°F | 86% | 1018 mb (30.06 in) | NW 28 kph (NW 17.3 mph) | 0.00 mm (0.00 in) | 2SM |
| | KGGW 231114Z AUTO 32015KT 2SM -SN BR FEW033 BKN065 OVC090 M09/M11 A3006 RMK AO2 P0000 TSNO |
| 03:53 MST |  Overcast Light Snow | -9°C / 16°F | -11°C / 12°F | 86% | 1018 mb (30.06 in) | NNW 22 kph (NNW 13.8 mph) | 0.00 mm (0.00 in) | 4SM |
| | KGGW 231053Z AUTO 33012KT 4SM -SN BR SCT029 SCT070 OVC090 M09/M11 A3005 RMK AO2 SNB45 SLP217 P0000 T10891106 TSNO |
| 02:53 MST |  Overcast Fog And Mist | -7°C / 19°F | -8°C / 18°F | 93% | 1017 mb (30.03 in) | WNW 13 kph (WNW 8.1 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGGW 230953Z AUTO 29007KT 3SM BR OVC035 M07/M08 A3004 RMK AO2 SNE39 SLP213 P0000 T10671078 TSNO |
| 02:45 MST |  Overcast Fog And Mist | -7°C / 19°F | -8°C / 18°F | 93% | 1017 mb (30.03 in) | WNW 9 kph (WNW 5.8 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGGW 230945Z AUTO 29005KT 3SM BR OVC035 M07/M08 A3004 RMK AO2 SNE39 P0000 TSNO |
| 02:36 MST |  Overcast Light Snow | -7°C / 19°F | -8°C / 18°F | 93% | 1017 mb (30.03 in) | NW 9 kph (NW 5.8 mph) | 0.00 mm (0.00 in) | 2 1/2SM |
| | KGGW 230936Z AUTO 30005KT 2 1/2SM -SN BR OVC035 M07/M08 A3004 RMK AO2 P0000 TSNO |
| 02:20 MST |  Overcast Light Snow | -7°C / 19°F | -8°C / 18°F | 93% | 1017 mb (30.03 in) | NW 9 kph (NW 5.8 mph) | 0.00 mm (0.00 in) | 1 3/4SM |
| | KGGW 230920Z AUTO 31005KT 1 3/4SM -SN BR OVC035 M07/M08 A3003 RMK AO2 P0000 TSNO |
| 02:03 MST |  Overcast Light Snow | -7°C / 19°F | -8°C / 18°F | 93% | 1017 mb (30.03 in) | NW 13 kph (NW 8.1 mph) | 0.00 mm (0.00 in) | 2SM |
| | KGGW 230903Z AUTO 32007KT 2SM -SN BR FEW008 OVC035 M07/M08 A3003 RMK AO2 P0000 TSNO |
| 01:53 MST |  Overcast Light Snow | -7°C / 19°F | -7°C / 19°F | 100% | 1017 mb (30.03 in) | NW 11 kph (NW 6.9 mph) | 0.00 mm (0.00 in) | 1 3/4SM |
| | KGGW 230853Z AUTO 32006KT 1 3/4SM -SN BR FEW008 OVC033 M07/M07 A3002 RMK AO2 SNE01B29 SLP205 P0000 60000 T10671072 51004 TSNO |
| 01:51 MST |  Overcast Light Snow | -7°C / 19°F | -7°C / 19°F | 100% | 1017 mb (30.03 in) | NW 9 kph (NW 5.8 mph) | 0.00 mm (0.00 in) | 1 3/4SM |
| | KGGW 230851Z AUTO 32005KT 1 3/4SM -SN BR FEW008 OVC033 M07/M07 A3002 RMK AO2 SNE01B29 P0000 TSNO |
| 01:30 MST |  Overcast Light Snow | -6°C / 21°F | -7°C / 19°F | 93% | 1017 mb (30.03 in) | NW 7 kph (NW 4.6 mph) | 0.00 mm (0.00 in) | 2SM |
| | KGGW 230830Z AUTO 32004KT 2SM -SN BR FEW004 SCT008 OVC029 M06/M07 A3002 RMK AO2 SNE01B29 P0000 TSNO |
| 01:15 MST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1017 mb (30.03 in) | NW 7 kph (NW 4.6 mph) | 0.00 mm (0.00 in) | 2SM |
| | KGGW 230815Z AUTO 31004KT 2SM BR BKN002 OVC008 M06/M07 A3002 RMK AO2 SNE01 P0000 TSNO |
| 01:12 MST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1017 mb (30.03 in) | NW 7 kph (NW 4.6 mph) | 0.00 mm (0.00 in) | 1SM |
| | KGGW 230812Z AUTO 32004KT 1SM BR OVC002 M06/M07 A3002 RMK AO2 SNE01 P0000 TSNO |
| 00:53 MST |  Obscured Light Snow | -6°C / 21°F | -7°C / 19°F | 93% | 1017 mb (30.03 in) | NNW 6 kph (NNW 3.5 mph) | 0.00 mm (0.00 in) | 1/4SM |
| | KGGW 230753Z AUTO 34003KT 1/4SM -SN FZFG VV001 M06/M07 A3002 RMK AO2 SNB44 SLP203 P0000 T10611067 TSNO |
| 00:44 MST |  Overcast Light Snow | -6°C / 21°F | -7°C / 19°F | 93% | 1017 mb (30.03 in) | NNW 6 kph (NNW 3.5 mph) | 0.00 mm (0.00 in) | 1/4SM |
| | KGGW 230744Z AUTO 34003KT 1/4SM -SN FZFG OVC001 M06/M07 A3002 RMK AO2 SNB44 P0000 TSNO |