| 11:15 MST |  Clear | 8°C / 46°F | -4°C / 25°F | 43% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KCGZ 091815Z AUTO 00000KT 10SM CLR 08/M04 A3008 RMK AO1 |
| 10:55 MST |  Clear | 7°C / 45°F | -4°C / 25°F | 46% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KCGZ 091755Z AUTO 00000KT 10SM CLR 07/M04 A3009 RMK AO1 10070 20030 52010 |
| 10:35 MST |  Clear | 7°C / 45°F | -4°C / 25°F | 46% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KCGZ 091735Z AUTO 00000KT 10SM CLR 07/M04 A3010 RMK AO1 |
| 10:15 MST |  Clear | 7°C / 45°F | -4°C / 25°F | 46% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KCGZ 091715Z AUTO 00000KT 10SM CLR 07/M04 A3010 RMK AO1 |
| 09:55 MST |  Clear | 6°C / 43°F | -4°C / 25°F | 49% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KCGZ 091655Z AUTO 00000KT 10SM CLR 06/M04 A3010 RMK AO1 |
| 09:35 MST |  Clear | 5°C / 41°F | -4°C / 25°F | 53% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KCGZ 091635Z AUTO 00000KT 10SM CLR 05/M04 A3008 RMK AO1 |
| 09:15 MST |  Clear | 5°C / 41°F | -4°C / 25°F | 53% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KCGZ 091615Z AUTO 00000KT 10SM CLR 05/M04 A3009 RMK AO1 |
| 08:55 MST |  Clear | 5°C / 41°F | -4°C / 25°F | 53% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KCGZ 091555Z AUTO 00000KT 10SM CLR 05/M04 A3007 RMK AO1 |
| 08:35 MST |  Clear | 4°C / 39°F | -4°C / 25°F | 56% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KCGZ 091535Z AUTO 00000KT 10SM CLR 04/M04 A3007 RMK AO1 |
| 08:15 MST |  Clear | 4°C / 39°F | -4°C / 25°F | 56% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KCGZ 091515Z AUTO 00000KT 10SM CLR 04/M04 A3006 RMK AO1 |
| 07:55 MST |  Clear | 4°C / 39°F | -4°C / 25°F | 56% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KCGZ 091455Z AUTO 00000KT 10SM CLR 04/M04 A3006 RMK AO1 52017 |
| 07:35 MST |  Clear | 3°C / 37°F | -4°C / 25°F | 60% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 091435Z AUTO 00000KT 10SM CLR 03/M04 A3004 RMK AO1 |
| 07:15 MST |  Clear | 3°C / 37°F | -4°C / 25°F | 60% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KCGZ 091415Z AUTO 00000KT 10SM CLR 03/M04 A3005 RMK AO1 |
| 06:55 MST |  Clear | 4°C / 39°F | -4°C / 25°F | 56% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 091355Z AUTO 00000KT 10SM CLR 04/M04 A3004 RMK AO1 |
| 06:35 MST |  Clear | 4°C / 39°F | -4°C / 25°F | 56% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 091335Z AUTO 00000KT 10SM CLR 04/M04 A3003 RMK AO1 |
| 06:15 MST |  Clear | 4°C / 39°F | -4°C / 25°F | 56% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 091315Z AUTO 00000KT 10SM CLR 04/M04 A3003 RMK AO1 |
| 05:55 MST |  Clear | 3°C / 37°F | -4°C / 25°F | 60% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 091255Z AUTO 00000KT 10SM CLR 03/M04 A3002 RMK AO1 |
| 05:35 MST |  Clear | 3°C / 37°F | -4°C / 25°F | 60% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 091235Z AUTO 00000KT 10SM CLR 03/M04 A3002 RMK AO1 |
| 05:15 MST |  Clear | 3°C / 37°F | -4°C / 25°F | 60% | 1016 mb (30 in) | Calm | - | 10SM |
| | KCGZ 091215Z AUTO 00000KT 10SM CLR 03/M04 A3001 RMK AO1 |
| 04:55 MST |  Partly Cloudy | 4°C / 39°F | -4°C / 25°F | 56% | 1016 mb (30 in) | Calm | - | 10SM |
| | KCGZ 091155Z AUTO 00000KT 10SM FEW060 04/M04 A3001 RMK AO1 10070 20040 57003 |
| 04:35 MST |  Mostly Cloudy | 4°C / 39°F | -4°C / 25°F | 56% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 091135Z AUTO 00000KT 10SM BKN060 04/M04 A3002 RMK AO1 |
| 04:15 MST |  Overcast | 5°C / 41°F | -5°C / 23°F | 49% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 091115Z AUTO 00000KT 10SM OVC060 05/M05 A3002 RMK AO1 |
| 03:55 MST |  Overcast | 5°C / 41°F | -4°C / 25°F | 53% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 091055Z AUTO 00000KT 10SM OVC060 05/M04 A3002 RMK AO1 |
| 03:35 MST |  Overcast | 5°C / 41°F | -5°C / 23°F | 49% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 091035Z AUTO 00000KT 10SM OVC060 05/M05 A3003 RMK AO1 |
| 03:15 MST |  Overcast | 4°C / 39°F | -5°C / 23°F | 52% | 1017 mb (30.03 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KCGZ 091015Z AUTO 28003KT 10SM OVC060 04/M05 A3003 RMK AO1 |
| 02:55 MST |  Overcast | 4°C / 39°F | -5°C / 23°F | 52% | 1017 mb (30.03 in) | W 7 kph (W 4.6 mph) | - | 10SM |
| | KCGZ 090955Z AUTO 28004KT 10SM OVC060 04/M05 A3002 RMK AO1 |
| 02:35 MST |  Mostly Cloudy | 4°C / 39°F | -5°C / 23°F | 52% | 1017 mb (30.03 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KCGZ 090935Z AUTO 28003KT 10SM BKN050 04/M05 A3002 RMK AO1 |
| 02:15 MST |  Mostly Cloudy | 4°C / 39°F | -5°C / 23°F | 52% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 090915Z AUTO 00000KT 10SM BKN050 04/M05 A3002 RMK AO1 |
| 01:55 MST |  Partly Cloudy | 4°C / 39°F | -5°C / 23°F | 52% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 090855Z AUTO 00000KT 10SM SCT050 04/M05 A3002 RMK AO1 57007 |
| 01:35 MST |  Overcast | 4°C / 39°F | -4°C / 25°F | 56% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 090835Z AUTO 00000KT 10SM OVC050 04/M04 A3002 RMK AO1 |
| 01:15 MST |  Mostly Cloudy | 4°C / 39°F | -4°C / 25°F | 56% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 090815Z AUTO 00000KT 10SM BKN050 04/M04 A3002 RMK AO1 |
| 00:55 MST |  Clear | 4°C / 39°F | -4°C / 25°F | 56% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 090755Z AUTO 00000KT 10SM CLR 04/M04 A3002 RMK AO1 |
| 00:35 MST |  Partly Cloudy | 5°C / 41°F | -4°C / 25°F | 53% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 090735Z AUTO 00000KT 10SM SCT060 05/M04 A3002 RMK AO1 |
| 00:15 MST |  Overcast | 5°C / 41°F | -4°C / 25°F | 53% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KCGZ 090715Z AUTO 00000KT 10SM OVC060 05/M04 A3002 RMK AO1 |