| 09:10 MST |  Clear | -12°C / 10°F | -14°C / 7°F | 85% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KLAM 041610Z AUTO 00000KT 10SM CLR M12/M14 A3012 RMK AO2 |
| 08:50 MST |  Clear | -13°C / 9°F | -15°C / 5°F | 85% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KLAM 041550Z AUTO 00000KT 10SM CLR M13/M15 A3012 RMK AO2 |
| 08:30 MST |  Clear | -13°C / 9°F | -15°C / 5°F | 85% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KLAM 041530Z AUTO 00000KT 10SM CLR M13/M15 A3012 RMK AO2 |
| 08:10 MST |  Clear | -13°C / 9°F | -15°C / 5°F | 85% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KLAM 041510Z AUTO 00000KT 10SM CLR M13/M15 A3012 RMK AO2 |
| 07:50 MST |  Clear | -14°C / 7°F | -16°C / 3°F | 85% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KLAM 041450Z AUTO 00000KT 10SM CLR M14/M16 A3011 RMK AO2 |
| 07:30 MST |  Clear | -14°C / 7°F | -16°C / 3°F | 85% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KLAM 041430Z AUTO 00000KT 10SM CLR M14/M16 A3010 RMK AO2 |
| 07:10 MST |  Clear | -14°C / 7°F | -16°C / 3°F | 85% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KLAM 041410Z AUTO 00000KT 10SM CLR M14/M16 A3010 RMK AO2 |
| 06:50 MST |  Clear Light Snow | -14°C / 7°F | -16°C / 3°F | 85% | 1019 mb (30.09 in) | Calm | - | 7SM |
| | KLAM 041350Z AUTO 00000KT 7SM -SN CLR M14/M16 A3010 RMK AO2 |
| 06:30 MST |  Partly Cloudy Light Snow | -13°C / 9°F | -16°C / 3°F | 78% | 1019 mb (30.09 in) | Calm | - | 3SM |
| | KLAM 041330Z AUTO 00000KT 3SM -SN SCT010 M13/M16 A3010 RMK AO2 |
| 06:10 MST |  Partly Cloudy | -13°C / 9°F | -15°C / 5°F | 85% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KLAM 041310Z AUTO 00000KT 10SM SCT010 M13/M15 A3010 RMK AO2 |
| 05:50 MST |  Clear | -14°C / 7°F | -16°C / 3°F | 85% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KLAM 041250Z AUTO 00000KT 10SM CLR M14/M16 A3009 RMK AO2 |
| 05:30 MST |  Clear | -14°C / 7°F | -16°C / 3°F | 85% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KLAM 041230Z AUTO 00000KT 10SM CLR M14/M16 A3009 RMK AO2 |
| 05:10 MST |  Partly Cloudy Light Snow | -14°C / 7°F | -16°C / 3°F | 85% | 1019 mb (30.09 in) | Calm | - | 7SM |
| | KLAM 041210Z AUTO 00000KT 7SM -SN SCT012 M14/M16 A3010 RMK AO2 |
| 04:50 MST |  Overcast Light Snow | -14°C / 7°F | -16°C / 3°F | 85% | 1019 mb (30.09 in) | Calm | - | 2SM |
| | KLAM 041150Z AUTO 00000KT 2SM -SN OVC016 M14/M16 A3010 RMK AO2 |
| 04:30 MST |  Overcast Light Snow | -13°C / 9°F | -15°C / 5°F | 85% | 1019 mb (30.09 in) | Calm | - | 1 1/2SM |
| | KLAM 041130Z AUTO 00000KT 1 1/2SM -SN OVC016 M13/M15 A3010 RMK AO2 |
| 04:10 MST |  Overcast Light Snow | -13°C / 9°F | -15°C / 5°F | 85% | 1019 mb (30.09 in) | Calm | - | 2SM |
| | KLAM 041110Z AUTO 00000KT 2SM -SN OVC016 M13/M15 A3010 RMK AO2 VIS 1 1/2V5 |
| 03:50 MST |  Overcast Light Snow | -13°C / 9°F | -15°C / 5°F | 85% | 1019 mb (30.09 in) | Calm | - | 1 1/4SM |
| | KLAM 041050Z AUTO 00000KT 1 1/4SM -SN OVC016 M13/M15 A3010 RMK AO2 |
| 03:30 MST |  Overcast Snow | -13°C / 9°F | -15°C / 5°F | 85% | 1019 mb (30.09 in) | Calm | - | 1SM |
| | KLAM 041030Z AUTO 00000KT 1SM SN OVC016 M13/M15 A3009 RMK AO2 |
| 03:10 MST |  Overcast Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1019 mb (30.09 in) | Calm | - | 3/4SM |
| | KLAM 041010Z AUTO 00000KT 3/4SM SN OVC016 M13/M14 A3009 RMK AO2 |
| 02:50 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1019 mb (30.09 in) | Calm | - | 1 1/2SM |
| | KLAM 040950Z AUTO 00000KT 1 1/2SM -SN OVC016 M13/M14 A3010 RMK AO2 |
| 02:30 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1019 mb (30.09 in) | Calm | - | 2SM |
| | KLAM 040930Z AUTO 00000KT 2SM -SN OVC016 M13/M14 A3009 RMK AO2 VIS 1 1/2V3 |
| 02:10 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1019 mb (30.09 in) | Calm | - | 2 1/2SM |
| | KLAM 040910Z AUTO 00000KT 2 1/2SM -SN OVC016 M13/M14 A3008 RMK AO2 |
| 01:50 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1019 mb (30.09 in) | S 9 kph (S 5.8 mph) | - | 3SM |
| | KLAM 040850Z AUTO 18005KT 3SM -SN OVC016 M13/M14 A3009 RMK AO2 |
| 01:30 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1019 mb (30.09 in) | Calm | - | 3SM |
| | KLAM 040830Z AUTO 00000KT 3SM -SN OVC016 M13/M14 A3008 RMK AO2 |
| 01:10 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1018 mb (30.06 in) | S 9 kph (S 5.8 mph) | - | 4SM |
| | KLAM 040810Z AUTO 19005KT 4SM -SN OVC016 M13/M14 A3007 RMK AO2 |
| 00:50 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1018 mb (30.06 in) | S 13 kph (S 8.1 mph) | - | 4SM |
| | KLAM 040750Z AUTO 19007KT 4SM -SN OVC016 M13/M14 A3007 RMK AO2 |
| 00:30 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1018 mb (30.06 in) | Calm | - | 4SM |
| | KLAM 040730Z AUTO 00000KT 4SM -SN OVC014 M13/M14 A3007 RMK AO2 |
| 00:10 MST |  Overcast Light Snow | -13°C / 9°F | -14°C / 7°F | 92% | 1019 mb (30.09 in) | S 17 kph (S 10.4 mph) | - | 5SM |
| | KLAM 040710Z AUTO 19009KT 5SM -SN OVC014 M13/M14 A3008 RMK AO2 |