| 12:53 MST |  Clear | 3°C / 37°F | -3°C / 27°F | 65% | 1029 mb (30.39 in) | NNE 9 kph (NNE 5.8 mph) | - | 10SM |
| | KGUP 151953Z AUTO 02005KT 10SM CLR 03/M03 A3038 RMK AO2 SLP315 T00281028 |
| 11:53 MST |  Clear | -1°C / 30°F | -3°C / 27°F | 86% | 1029 mb (30.39 in) | Calm | - | 10SM |
| | KGUP 151853Z AUTO 00000KT 10SM CLR M01/M03 A3040 RMK AO2 SLP337 T10061028 |
| 11:19 MST |  Partly Cloudy | -2°C / 28°F | -4°C / 25°F | 86% | 1030 mb (30.42 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KGUP 151819Z AUTO 28003KT 10SM SCT003 M02/M04 A3042 RMK AO2 |
| 10:53 MST |  Mostly Cloudy Fog And Mist | -3°C / 27°F | -4°C / 25°F | 93% | 1030 mb (30.42 in) | WNW 6 kph (WNW 3.5 mph) | - | 4SM |
| | KGUP 151753Z AUTO 29003KT 4SM BR BKN003 M03/M04 A3043 RMK AO2 SLP353 T10281044 11028 21067 51012 |
| 10:44 MST |  Mostly Cloudy Fog And Mist | -3°C / 27°F | -4°C / 25°F | 93% | 1030 mb (30.42 in) | NW 7 kph (NW 4.6 mph) | - | 1 3/4SM |
| | KGUP 151744Z AUTO 31004KT 1 3/4SM BR BKN001 M03/M04 A3043 RMK AO2 |
| 10:09 MST |  Overcast | -4°C / 25°F | -5°C / 23°F | 93% | 1030 mb (30.42 in) | Calm | - | 7SM |
| | KGUP 151709Z AUTO 00000KT 7SM OVC001 M04/M05 A3043 RMK AO2 |
| 10:01 MST |  Overcast Fog And Mist | -4°C / 25°F | -5°C / 23°F | 93% | 1030 mb (30.42 in) | Calm | - | 2SM |
| | KGUP 151701Z AUTO 00000KT 2SM BR OVC001 M04/M05 A3042 RMK AO2 |
| 09:53 MST |  Overcast Fog And Mist | -4°C / 25°F | -5°C / 23°F | 93% | 1030 mb (30.42 in) | Calm | - | 3/4SM |
| | KGUP 151653Z AUTO 00000KT 3/4SM BR OVC001 M04/M05 A3042 RMK AO2 SLP356 T10441050 |
| 09:32 MST |  Overcast Fog | -6°C / 21°F | -6°C / 21°F | 100% | 1030 mb (30.42 in) | Calm | - | 1/2SM |
| | KGUP 151632Z AUTO 00000KT 1/2SM FZFG OVC001 M06/M06 A3043 RMK AO2 |
| 08:53 MST |  Obscured Fog | -6°C / 21°F | -7°C / 19°F | 93% | 1030 mb (30.42 in) | Calm | - | 1/4SM |
| | KGUP 151553Z AUTO 00000KT 1/4SM FZFG VV001 M06/M07 A3042 RMK AO2 SLP353 T10561067 |
| 08:04 MST |  Overcast Fog | -7°C / 19°F | -8°C / 18°F | 93% | 1029 mb (30.39 in) | Calm | - | 1/4SM |
| | KGUP 151504Z AUTO 00000KT 1/4SM FZFG OVC001 M07/M08 A3040 RMK AO2 |
| 07:57 MST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1029 mb (30.39 in) | Calm | - | 1SM |
| | KGUP 151457Z AUTO 00000KT 1SM BR OVC001 M06/M07 A3039 RMK AO2 |
| 07:53 MST |  Overcast Fog | -6°C / 21°F | -7°C / 19°F | 93% | 1029 mb (30.39 in) | Calm | - | 1/4SM |
| | KGUP 151453Z AUTO 00000KT 1/4SM FZFG OVC001 M06/M07 A3039 RMK AO2 SLP338 T10611067 53026 |
| 07:37 MST |  Mostly Cloudy Fog | -6°C / 21°F | -7°C / 19°F | 93% | 1028 mb (30.36 in) | W 9 kph (W 5.8 mph) | - | 1/4SM |
| | KGUP 151437Z AUTO 28005KT 1/4SM FZFG BKN002 M06/M07 A3037 RMK AO2 |
| 07:32 MST |  Mostly Cloudy Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1028 mb (30.36 in) | W 11 kph (W 6.9 mph) | - | 1 1/4SM |
| | KGUP 151432Z AUTO 28006KT 1 1/4SM BR BKN002 M06/M07 A3037 RMK AO2 |
| 07:00 MST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1028 mb (30.36 in) | E 7 kph (E 4.6 mph) | - | 5SM |
| | KGUP 151400Z AUTO 10004KT 5SM BR OVC002 M06/M07 A3035 RMK AO2 |
| 06:53 MST |  Overcast Fog And Mist | -6°C / 21°F | -6°C / 21°F | 100% | 1028 mb (30.36 in) | E 6 kph (E 3.5 mph) | - | 2 1/2SM |
| | KGUP 151353Z AUTO 10003KT 2 1/2SM BR OVC002 M06/M06 A3035 RMK AO2 SLP319 T10561061 |
| 06:44 MST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1027 mb (30.33 in) | E 6 kph (E 3.5 mph) | - | 1 3/4SM |
| | KGUP 151344Z AUTO 10003KT 1 3/4SM BR OVC002 M06/M07 A3034 RMK AO2 |
| 06:32 MST |  Overcast Fog And Mist | -6°C / 21°F | -7°C / 19°F | 93% | 1027 mb (30.33 in) | ENE 9 kph (ENE 5.8 mph) | - | 4SM |
| | KGUP 151332Z AUTO 06005KT 4SM BR OVC002 M06/M07 A3033 RMK AO2 |
| 06:12 MST |  Overcast Fog And Mist | -6°C / 21°F | -6°C / 21°F | 100% | 1027 mb (30.33 in) | ENE 13 kph (ENE 8.1 mph) | - | 2 1/2SM |
| | KGUP 151312Z AUTO 06007KT 2 1/2SM BR OVC002 M06/M06 A3032 RMK AO2 |
| 05:48 MST |  Overcast Fog And Mist | -5°C / 23°F | -6°C / 21°F | 93% | 1027 mb (30.33 in) | ENE 13 kph (ENE 8.1 mph) | - | 1 3/4SM |
| | KGUP 151248Z AUTO 07007KT 1 3/4SM BR OVC002 M05/M06 A3032 RMK AO2 SLP299 T10501056 |
| 05:47 MST |  Overcast Fog And Mist | -5°C / 23°F | -6°C / 21°F | 93% | 1027 mb (30.33 in) | ENE 13 kph (ENE 8.1 mph) | - | 1 3/4SM |
| | KGUP 151247Z AUTO 07007KT 1 3/4SM BR OVC002 M05/M06 A3032 RMK AO2 |
| 05:24 MST |  Mostly Cloudy | -5°C / 23°F | -6°C / 21°F | 93% | 1026 mb (30.3 in) | ENE 11 kph (ENE 6.9 mph) | - | 9SM |
| | KGUP 151224Z AUTO 07006KT 9SM BKN004 M05/M06 A3031 RMK AO2 |
| 05:13 MST |  Mostly Cloudy | -5°C / 23°F | -6°C / 21°F | 93% | 1026 mb (30.3 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KGUP 151213Z AUTO 07003KT 10SM BKN006 M05/M06 A3030 RMK AO2 |
| 05:03 MST |  Partly Cloudy | -4°C / 25°F | -6°C / 21°F | 86% | 1026 mb (30.3 in) | ENE 9 kph (ENE 5.8 mph) | - | 10SM |
| | KGUP 151203Z AUTO 06005KT 10SM SCT006 M04/M06 A3030 RMK AO2 |
| 04:53 MST |  Mostly Cloudy | -4°C / 25°F | -6°C / 21°F | 86% | 1026 mb (30.3 in) | E 9 kph (E 5.8 mph) | - | 10SM |
| | KGUP 151153Z AUTO 08005KT 10SM BKN006 M04/M06 A3029 RMK AO2 SLP284 T10441056 11033 21056 50001 |
| 04:24 MST |  Partly Cloudy | -4°C / 25°F | -6°C / 21°F | 86% | 1026 mb (30.3 in) | ENE 13 kph (ENE 8.1 mph) | - | 10SM |
| | KGUP 151124Z AUTO 06007KT 10SM SCT006 M04/M06 A3029 RMK AO2 |
| 03:53 MST |  Overcast | -3°C / 27°F | -5°C / 23°F | 86% | 1026 mb (30.3 in) | ENE 9 kph (ENE 5.8 mph) | - | 10SM |
| | KGUP 151053Z AUTO 07005KT 10SM OVC006 M03/M05 A3030 RMK AO2 SLP270 T10331050 |
| 03:37 MST |  Overcast | -3°C / 27°F | -5°C / 23°F | 86% | 1026 mb (30.3 in) | E 13 kph (E 8.1 mph) | - | 10SM |
| | KGUP 151037Z AUTO 08007KT 10SM OVC006 M03/M05 A3030 RMK AO2 |
| 02:53 MST |  Overcast | -4°C / 25°F | -5°C / 23°F | 93% | 1026 mb (30.3 in) | E 9 kph (E 5.8 mph) | - | 10SM |
| | KGUP 150953Z AUTO 08005KT 10SM BKN004 OVC010 M04/M05 A3031 RMK AO2 CIG 004V007 SLP275 T10391050 |
| 02:39 MST |  Overcast | -4°C / 25°F | -5°C / 23°F | 93% | 1026 mb (30.3 in) | E 11 kph (E 6.9 mph) | - | 10SM |
| | KGUP 150939Z AUTO 08006KT 10SM BKN004 OVC010 M04/M05 A3031 RMK AO2 |
| 02:07 MST |  Mostly Cloudy | -4°C / 25°F | -7°C / 19°F | 80% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KGUP 150907Z AUTO 00000KT 10SM BKN006 M04/M07 A3030 RMK AO2 |
| 01:53 MST |  Partly Cloudy | -4°C / 25°F | -7°C / 19°F | 80% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KGUP 150853Z AUTO 00000KT 10SM FEW006 M04/M07 A3029 RMK AO2 SLP278 T10441067 53009 |
| 00:53 MST |  Clear | -5°C / 23°F | -7°C / 19°F | 86% | 1025 mb (30.27 in) | E 6 kph (E 3.5 mph) | - | 10SM |
| | KGUP 150753Z AUTO 08003KT 10SM CLR M05/M07 A3027 RMK AO2 SLP285 T10501067 |