| 08:55 MST |  Mostly Cloudy | -14°C / 7°F | -17°C / 1°F | 78% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KJAC 251555Z 00000KT 10SM FEW045 BKN060 M14/M17 A3006 RMK AO1 |
| 08:35 MST |  Mostly Cloudy | -16°C / 3°F | -18°C / 0°F | 85% | 1018 mb (30.06 in) | E 9 kph (E 5.8 mph) | - | 10SM |
| | KJAC 251535Z 09005KT 10SM FEW041 SCT046 BKN060 M16/M18 A3006 RMK AO1 |
| 08:15 MST |  Overcast | -17°C / 1°F | -17°C / 1°F | 100% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KJAC 251515Z 00000KT 10SM SCT041 BKN050 OVC085 M17/M17 A3006 RMK AO1 |
| 07:55 MST |  Overcast | -17°C / 1°F | -17°C / 1°F | 100% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KJAC 251455Z 00000KT 10SM BKN050 BKN070 OVC085 M17/M17 A3006 RMK AO1 57003 |
| 07:51 MST |  Mostly Cloudy | -17°C / 1°F | -19°C / -2°F | 85% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KJAC 251451Z 00000KT 10SM BKN055 BKN070 M17/M19 A3006 |
| 07:35 MST |  Overcast | -17°C / 1°F | -18°C / 0°F | 92% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KJAC 251435Z 00000KT 10SM BKN050 OVC070 M17/M18 A3006 RMK AO1 |
| 07:15 MST |  Overcast | -17°C / 1°F | -18°C / 0°F | 92% | 1018 mb (30.06 in) | NE 6 kph (NE 3.5 mph) | - | 10SM |
| | KJAC 251415Z 03003KT 10SM BKN050 OVC070 M17/M18 A3006 RMK AO1 |
| 06:51 MST |  Overcast | -18°C / 0°F | -18°C / 0°F | 100% | 1018 mb (30.06 in) | N 11 kph (N 6.9 mph) | - | 10SM |
| | KJAC 251351Z 01006KT 10SM OVC055 M18/M18 A3006 |
| 06:35 MST |  Overcast | -18°C / 0°F | -19°C / -2°F | 92% | 1018 mb (30.06 in) | N 11 kph (N 6.9 mph) | - | 10SM |
| | KJAC 251335Z AUTO 01006KT 10SM BKN048 OVC050 M18/M19 A3005 RMK AO1 |
| 06:15 MST |  Overcast | -18°C / 0°F | -19°C / -2°F | 92% | 1018 mb (30.06 in) | ENE 9 kph (ENE 5.8 mph) | - | 10SM |
| | KJAC 251315Z AUTO 06005KT 10SM BKN050 OVC060 M18/M19 A3005 RMK AO1 |
| 05:55 MST |  Overcast | -18°C / 0°F | -23°C / -9°F | 65% | 1018 mb (30.06 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KJAC 251255Z AUTO 13003KT 10SM OVC050 M18/M23 A3005 RMK AO1 |
| 05:35 MST |  Overcast | -17°C / 1°F | -21°C / -6°F | 71% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KJAC 251235Z AUTO 00000KT 10SM FEW047 OVC060 M17/M21 A3006 RMK AO1 |
| 05:15 MST |  Overcast | -16°C / 3°F | -17°C / 1°F | 92% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KJAC 251215Z AUTO 00000KT 10SM FEW024 FEW037 OVC047 M16/M17 A3007 RMK AO1 |
| 04:55 MST |  Overcast | -16°C / 3°F | -17°C / 1°F | 92% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KJAC 251155Z AUTO 00000KT 10SM BKN039 OVC047 M16/M17 A3007 RMK AO1 11130 21170 54000 |
| 04:35 MST |  Overcast | -16°C / 3°F | -17°C / 1°F | 92% | 1019 mb (30.09 in) | SE 9 kph (SE 5.8 mph) | - | 9SM |
| | KJAC 251135Z AUTO 12005KT 9SM BKN039 OVC047 M16/M17 A3008 RMK AO1 |
| 04:15 MST |  Overcast | -15°C / 5°F | -18°C / 0°F | 78% | 1019 mb (30.09 in) | ESE 9 kph (ESE 5.8 mph) | - | 9SM |
| | KJAC 251115Z AUTO 11005KT 9SM BKN041 OVC050 M15/M18 A3008 RMK AO1 |
| 03:55 MST |  Overcast | -14°C / 7°F | -18°C / 0°F | 72% | 1019 mb (30.09 in) | NW 6 kph (NW 3.5 mph) | - | 10SM |
| | KJAC 251055Z AUTO 30003KT 10SM FEW029 FEW042 OVC050 M14/M18 A3008 RMK AO1 |
| 03:35 MST |  Mostly Cloudy | -14°C / 7°F | -17°C / 1°F | 78% | 1019 mb (30.09 in) | Calm | - | 9SM |
| | KJAC 251035Z AUTO 00000KT 9SM BKN035 BKN055 M14/M17 A3008 RMK AO1 |
| 03:15 MST |  Overcast | -15°C / 5°F | -18°C / 0°F | 78% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KJAC 251015Z AUTO 00000KT 10SM BKN035 OVC046 M15/M18 A3008 RMK AO1 |
| 02:55 MST |  Overcast | -14°C / 7°F | -17°C / 1°F | 78% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KJAC 250955Z AUTO 00000KT 10SM BKN048 OVC050 M14/M17 A3008 RMK AO1 |
| 02:35 MST |  Overcast | -14°C / 7°F | -18°C / 0°F | 72% | 1019 mb (30.09 in) | E 6 kph (E 3.5 mph) | - | 9SM |
| | KJAC 250935Z AUTO 10003KT 9SM BKN039 OVC048 M14/M18 A3008 RMK AO1 |
| 02:15 MST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1019 mb (30.09 in) | NE 9 kph (NE 5.8 mph) | - | 5SM |
| | KJAC 250915Z AUTO 03005KT 5SM OVC039 M13/M17 A3008 RMK AO1 |
| 01:55 MST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1018 mb (30.06 in) | NE 13 kph (NE 8.1 mph) | - | 5SM |
| | KJAC 250855Z AUTO 03007KT 5SM BKN026 OVC037 M13/M17 A3007 RMK AO1 57003 |
| 01:35 MST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1018 mb (30.06 in) | NE 11 kph (NE 6.9 mph) | - | 3SM |
| | KJAC 250835Z AUTO 03006KT 3SM BKN028 OVC035 M13/M17 A3007 RMK AO1 |
| 01:15 MST |  Overcast | -13°C / 9°F | -17°C / 1°F | 72% | 1018 mb (30.06 in) | NE 11 kph (NE 6.9 mph) | - | 8SM |
| | KJAC 250815Z AUTO 03006KT 8SM OVC041 M13/M17 A3007 RMK AO1 |
| 00:55 MST |  Overcast | -14°C / 7°F | -18°C / 0°F | 72% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KJAC 250755Z AUTO 00000KT 10SM BKN043 OVC050 M14/M18 A3007 RMK AO1 |
| 00:35 MST |  Overcast | -14°C / 7°F | -18°C / 0°F | 72% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KJAC 250735Z AUTO 00000KT 10SM FEW042 OVC050 M14/M18 A3008 RMK AO1 |
| 00:15 MST |  Overcast | -14°C / 7°F | -19°C / -2°F | 66% | 1019 mb (30.09 in) | E 7 kph (E 4.6 mph) | - | 10SM |
| | KJAC 250715Z AUTO 09004KT 10SM BKN060 OVC080 M14/M19 A3008 RMK AO1 |