| 05:54 MST |  Overcast | -3°C / 27°F | -4°C / 25°F | 93% | 1006 mb (29.71 in) | Variable 7 kph (Variable 4.6 mph) | - | 10SM |
| | KGCN 231254Z AUTO VRB04KT 10SM FEW004 OVC033 M03/M04 A2970 RMK AO2 SLP057 T10281039 |
| 05:42 MST |  Overcast | -3°C / 27°F | -4°C / 25°F | 93% | 1005 mb (29.68 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KGCN 231242Z AUTO 33003KT 10SM FEW003 SCT008 OVC036 M03/M04 A2969 RMK AO2 |
| 04:54 MST |  Overcast | -3°C / 27°F | -4°C / 25°F | 93% | 1005 mb (29.68 in) | Variable 9 kph (Variable 5.8 mph) | - | 10SM |
| | KGCN 231154Z AUTO VRB05KT 10SM BKN008 OVC038 M03/M04 A2967 RMK AO2 CIG 006V012 SLP044 60002 70061 T10281039 11022 21028 52016 |
| 04:46 MST |  Overcast | -2°C / 28°F | -4°C / 25°F | 86% | 1004 mb (29.65 in) | NW 7 kph (NW 4.6 mph) | - | 10SM |
| | KGCN 231146Z AUTO 30004KT 10SM BKN008 OVC019 M02/M04 A2966 RMK AO2 CIG 006V014 |
| 04:11 MST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1004 mb (29.65 in) | NW 6 kph (NW 3.5 mph) | - | 10SM |
| | KGCN 231111Z AUTO 31003KT 10SM SCT008 BKN013 OVC042 M02/M03 A2965 RMK AO2 |
| 03:54 MST |  Overcast | -2°C / 28°F | -4°C / 25°F | 86% | 1004 mb (29.65 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KGCN 231054Z AUTO 35004KT 10SM SCT008 OVC039 M02/M04 A2964 RMK AO2 SLP036 T10221039 |
| 03:40 MST |  Overcast | -2°C / 28°F | -4°C / 25°F | 86% | 1004 mb (29.65 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KGCN 231040Z AUTO 33003KT 10SM FEW008 SCT018 OVC039 M02/M04 A2964 RMK AO2 |
| 03:32 MST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1004 mb (29.65 in) | Calm | - | 10SM |
| | KGCN 231032Z AUTO 00000KT 10SM FEW008 BKN021 OVC038 M02/M03 A2964 RMK AO2 |
| 03:09 MST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1004 mb (29.65 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KGCN 231009Z AUTO 34003KT 10SM BKN008 BKN017 OVC039 M02/M03 A2964 RMK AO2 CIG 006V012 |
| 02:54 MST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1003 mb (29.62 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KGCN 230954Z AUTO 35004KT 10SM SCT008 BKN025 OVC041 M02/M03 A2963 RMK AO2 SLP029 T10221033 |
| 02:48 MST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1003 mb (29.62 in) | NNW 7 kph (NNW 4.6 mph) | - | 9SM |
| | KGCN 230948Z AUTO 34004KT 9SM FEW008 BKN027 OVC039 M02/M03 A2963 RMK AO2 |
| 02:41 MST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1003 mb (29.62 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KGCN 230941Z AUTO 35004KT 10SM FEW010 SCT029 OVC039 M02/M03 A2963 RMK AO2 |
| 02:33 MST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1003 mb (29.62 in) | NNW 9 kph (NNW 5.8 mph) | - | 10SM |
| | KGCN 230933Z AUTO 34005KT 10SM SCT010 BKN029 OVC039 M02/M03 A2962 RMK AO2 |
| 02:19 MST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1003 mb (29.62 in) | Calm | - | 10SM |
| | KGCN 230919Z AUTO 00000KT 10SM BKN008 BKN014 OVC041 M02/M03 A2962 RMK AO2 CIG 005V011 |
| 01:54 MST |  Overcast | -2°C / 28°F | -4°C / 25°F | 86% | 1003 mb (29.62 in) | NNW 6 kph (NNW 3.5 mph) | 0.00 mm (0.00 in) | 10SM |
| | KGCN 230854Z AUTO 33003KT 10SM SCT007 BKN013 OVC017 M02/M04 A2961 RMK AO2 SNE05 SLP021 P0000 60002 T10221039 51010 |
| 01:33 MST |  Overcast | -2°C / 28°F | -3°C / 27°F | 93% | 1002 mb (29.59 in) | NNW 6 kph (NNW 3.5 mph) | 0.00 mm (0.00 in) | 10SM |
| | KGCN 230833Z AUTO 33003KT 10SM SCT005 OVC012 M02/M03 A2960 RMK AO2 SNE05 P0000 |
| 01:02 MST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1002 mb (29.59 in) | NW 9 kph (NW 5.8 mph) | 0.00 mm (0.00 in) | 5SM |
| | KGCN 230802Z AUTO 31005KT 5SM -SN BR BKN005 OVC010 M02/M03 A2959 RMK AO2 P0000 |
| 00:54 MST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1002 mb (29.59 in) | Variable 7 kph (Variable 4.6 mph) | 0.25 mm (0.01 in) | 2 1/2SM |
| | KGCN 230754Z AUTO VRB04KT 2 1/2SM -SN BR BKN005 BKN008 OVC012 M02/M03 A2959 RMK AO2 SLP016 P0001 T10221033 |
| 00:43 MST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1002 mb (29.59 in) | NW 7 kph (NW 4.6 mph) | 0.25 mm (0.01 in) | 4SM |
| | KGCN 230743Z AUTO 30004KT 4SM -SN BR BKN007 BKN010 OVC014 M02/M03 A2959 RMK AO2 P0001 |
| 00:36 MST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1002 mb (29.59 in) | Variable 6 kph (Variable 3.5 mph) | 0.25 mm (0.01 in) | 2 1/2SM |
| | KGCN 230736Z AUTO VRB03KT 2 1/2SM -SN BR BKN005 OVC014 M02/M03 A2959 RMK AO2 P0001 |
| 00:21 MST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1002 mb (29.59 in) | NW 7 kph (NW 4.6 mph) | 0.25 mm (0.01 in) | 1 1/2SM |
| | KGCN 230721Z AUTO 31004KT 1 1/2SM -SN BR BKN005 OVC013 M02/M03 A2959 RMK AO2 P0001 |
| 00:14 MST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1002 mb (29.59 in) | Variable 7 kph (Variable 4.6 mph) | 0.00 mm (0.00 in) | 2SM |
| | KGCN 230714Z AUTO VRB04KT 2SM -SN BR BKN005 OVC011 M02/M03 A2959 RMK AO2 P0000 |