| 03:30 MST |  Overcast | -2°C / 28°F | -2°C / 28°F | 100% | 1023 mb (30.21 in) | Calm | - | 7SM |
| | KLAM 301030Z AUTO 00000KT 7SM OVC003 M02/M02 A3021 RMK AO2 |
| 03:10 MST |  Overcast | -2°C / 28°F | -2°C / 28°F | 100% | 1023 mb (30.21 in) | Calm | - | 7SM |
| | KLAM 301010Z AUTO 00000KT 7SM OVC003 M02/M02 A3021 RMK AO2 |
| 02:50 MST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1023 mb (30.21 in) | Calm | - | 5SM |
| | KLAM 300950Z AUTO 00000KT 5SM BR OVC003 M02/M02 A3021 RMK AO2 |
| 02:30 MST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1023 mb (30.21 in) | Calm | - | 4SM |
| | KLAM 300930Z AUTO 00000KT 4SM BR OVC001 M02/M02 A3021 RMK AO2 |
| 02:10 MST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1023 mb (30.21 in) | Calm | - | 5SM |
| | KLAM 300910Z AUTO 00000KT 5SM BR OVC001 M02/M02 A3021 RMK AO2 |
| 01:50 MST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1023 mb (30.21 in) | NNW 7 kph (NNW 4.6 mph) | - | 1SM |
| | KLAM 300850Z AUTO 33004KT 1SM BR OVC001 M02/M02 A3020 RMK AO2 |
| 01:30 MST |  Overcast Fog And Mist | -2°C / 28°F | -2°C / 28°F | 100% | 1023 mb (30.21 in) | NNW 6 kph (NNW 3.5 mph) | - | 3SM |
| | KLAM 300830Z AUTO 34003KT 3SM BR OVC003 M02/M02 A3020 RMK AO2 |
| 01:10 MST |  Overcast | -2°C / 28°F | -2°C / 28°F | 100% | 1023 mb (30.21 in) | Calm | - | 7SM |
| | KLAM 300810Z AUTO 00000KT 7SM OVC003 M02/M02 A3020 RMK AO2 |
| 00:50 MST |  Overcast | -2°C / 28°F | -2°C / 28°F | 100% | 1023 mb (30.21 in) | NNE 11 kph (NNE 6.9 mph) | - | 10SM |
| | KLAM 300750Z AUTO 02006KT 10SM OVC005 M02/M02 A3020 RMK AO2 |
| 00:30 MST |  Mostly Cloudy | -1°C / 30°F | -2°C / 28°F | 93% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KLAM 300730Z AUTO 00000KT 10SM BKN007 M01/M02 A3021 RMK AO2 |
| 00:10 MST |  Clear | -2°C / 28°F | -2°C / 28°F | 100% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KLAM 300710Z AUTO 00000KT 10SM CLR M02/M02 A3021 RMK AO2 |