| 17:15 MST |  Clear | 8°C / 46°F | -9°C / 16°F | 29% | 1018 mb (30.06 in) | SSE 11 kph (SSE 6.9 mph) | - | 10SM |
| | KSGU 260015Z AUTO 20006KT 10SM CLR 08/M09 A3005 RMK AO1 |
| 16:55 MST |  Clear | 8°C / 46°F | -9°C / 16°F | 29% | 1018 mb (30.06 in) | SSE 7 kph (SSE 4.6 mph) | - | 10SM |
| | KSGU 252355Z AUTO 20004KT 10SM CLR 08/M09 A3005 RMK AO1 10090 20010 400901050 57003 |
| 16:35 MST |  Clear | 8°C / 46°F | -9°C / 16°F | 29% | 1018 mb (30.06 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KSGU 252335Z AUTO 16003KT 10SM CLR 08/M09 A3005 RMK AO1 |
| 16:15 MST |  Clear | 8°C / 46°F | -9°C / 16°F | 29% | 1018 mb (30.06 in) | SE 9 kph (SE 5.8 mph) | - | 10SM |
| | KSGU 252315Z AUTO 14005KT 10SM CLR 08/M09 A3005 RMK AO1 |
| 15:55 MST |  Clear | 9°C / 48°F | -9°C / 16°F | 27% | 1018 mb (30.06 in) | SE 9 kph (SE 5.8 mph) | - | 10SM |
| | KSGU 252255Z AUTO 14005KT 10SM CLR 09/M09 A3006 RMK AO1 |
| 15:35 MST |  Clear | 9°C / 48°F | -9°C / 16°F | 27% | 1018 mb (30.06 in) | SSE 11 kph (SSE 6.9 mph) | - | 10SM |
| | KSGU 252235Z AUTO 20006KT 10SM CLR 09/M09 A3005 RMK AO1 |
| 15:15 MST |  Clear | 9°C / 48°F | -10°C / 14°F | 25% | 1018 mb (30.06 in) | SW 9 kph (SW 5.8 mph) | - | 10SM |
| | KSGU 252215Z AUTO 21005KT 10SM CLR 09/M10 A3005 RMK AO1 |
| 14:55 MST |  Clear | 8°C / 46°F | -9°C / 16°F | 29% | 1018 mb (30.06 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KSGU 252155Z AUTO 23004KT 10SM CLR 08/M09 A3005 RMK AO1 |
| 14:35 MST |  Clear | 8°C / 46°F | -9°C / 16°F | 29% | 1018 mb (30.06 in) | SSW 9 kph (SSW 5.8 mph) | - | 10SM |
| | KSGU 252135Z AUTO 25005KT 10SM CLR 08/M09 A3006 RMK AO1 |
| 14:15 MST |  Clear | 7°C / 45°F | -9°C / 16°F | 31% | 1018 mb (30.06 in) | SSW 9 kph (SSW 5.8 mph) | - | 10SM |
| | KSGU 252115Z AUTO 26005KT 10SM CLR 07/M09 A3006 RMK AO1 |
| 13:55 MST |  Clear | 7°C / 45°F | -9°C / 16°F | 31% | 1018 mb (30.06 in) | W 9 kph (W 5.8 mph) | - | 10SM |
| | KSGU 252055Z AUTO 27005KT 10SM CLR 07/M09 A3006 RMK AO1 57030 |
| 13:35 MST |  Clear | 7°C / 45°F | -10°C / 14°F | 29% | 1018 mb (30.06 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KSGU 252035Z AUTO 24004KT 10SM CLR 07/M10 A3007 RMK AO1 |
| 13:15 MST |  Clear | 6°C / 43°F | -11°C / 12°F | 29% | 1019 mb (30.09 in) | Calm | - | 10SM |
| | KSGU 252015Z AUTO 00000KT 10SM CLR 06/M11 A3008 RMK AO1 |
| 12:55 MST |  Clear | 4°C / 39°F | -11°C / 12°F | 33% | 1019 mb (30.09 in) | ENE 7 kph (ENE 4.6 mph) | - | 10SM |
| | KSGU 251955Z AUTO 07004KT 10SM CLR 04/M11 A3009 RMK AO1 |
| 12:35 MST |  Clear | 4°C / 39°F | -11°C / 12°F | 33% | 1019 mb (30.09 in) | ENE 7 kph (ENE 4.6 mph) | - | 10SM |
| | KSGU 251935Z AUTO 07004KT 10SM CLR 04/M11 A3010 RMK AO1 |
| 12:15 MST |  Clear | 4°C / 39°F | -11°C / 12°F | 33% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KSGU 251915Z AUTO 00000KT 10SM CLR 04/M11 A3011 RMK AO1 |
| 11:55 MST |  Clear | 3°C / 37°F | -11°C / 12°F | 35% | 1020 mb (30.12 in) | ESE 6 kph (ESE 3.5 mph) | - | 10SM |
| | KSGU 251855Z AUTO 11003KT 10SM CLR 03/M11 A3013 RMK AO1 |
| 11:35 MST |  Clear | 2°C / 36°F | -11°C / 12°F | 38% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 251835Z AUTO 00000KT 10SM CLR 02/M11 A3014 RMK AO1 |
| 11:15 MST |  Clear | 1°C / 34°F | -11°C / 12°F | 41% | 1021 mb (30.15 in) | E 7 kph (E 4.6 mph) | - | 10SM |
| | KSGU 251815Z AUTO 10004KT 10SM CLR 01/M11 A3015 RMK AO1 |
| 10:55 MST |  Clear | 1°C / 34°F | -11°C / 12°F | 41% | 1021 mb (30.15 in) | E 9 kph (E 5.8 mph) | - | 10SM |
| | KSGU 251755Z AUTO 10005KT 10SM CLR 01/M11 A3015 RMK AO1 10010 21050 52003 |
| 10:35 MST |  Clear | -1°C / 30°F | -11°C / 12°F | 47% | 1021 mb (30.15 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KSGU 251735Z AUTO 06003KT 10SM CLR M01/M11 A3016 RMK AO1 |
| 10:15 MST |  Clear | 0°C / 32°F | -9°C / 16°F | 51% | 1021 mb (30.15 in) | E 6 kph (E 3.5 mph) | - | 10SM |
| | KSGU 251715Z AUTO 08003KT 10SM CLR 00/M09 A3016 RMK AO1 |
| 09:55 MST |  Clear | -2°C / 28°F | -9°C / 16°F | 59% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 251655Z AUTO 00000KT 10SM CLR M02/M09 A3016 RMK AO1 |
| 09:35 MST |  Clear | -3°C / 27°F | -10°C / 14°F | 59% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 251635Z AUTO 00000KT 10SM CLR M03/M10 A3016 RMK AO1 |
| 09:15 MST |  Clear | -2°C / 28°F | -11°C / 12°F | 51% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 251615Z AUTO 00000KT 10SM CLR M02/M11 A3015 RMK AO1 |
| 08:55 MST |  Clear | -4°C / 25°F | -10°C / 14°F | 63% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 251555Z AUTO 00000KT 10SM CLR M04/M10 A3015 RMK AO1 |
| 08:35 MST |  Clear | -3°C / 27°F | -10°C / 14°F | 59% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 251535Z AUTO 00000KT 10SM CLR M03/M10 A3015 RMK AO1 |
| 08:15 MST |  Clear | -4°C / 25°F | -11°C / 12°F | 59% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 251515Z AUTO 00000KT 10SM CLR M04/M11 A3014 RMK AO1 |
| 07:55 MST |  Clear | -5°C / 23°F | -11°C / 12°F | 63% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 251455Z AUTO 00000KT 10SM CLR M05/M11 A3014 RMK AO1 52003 |
| 07:35 MST |  Clear | -4°C / 25°F | -11°C / 12°F | 59% | 1020 mb (30.12 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KSGU 251435Z AUTO 06003KT 10SM CLR M04/M11 A3013 RMK AO1 |
| 07:15 MST |  Clear | -4°C / 25°F | -11°C / 12°F | 59% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KSGU 251415Z AUTO 00000KT 10SM CLR M04/M11 A3013 RMK AO1 |
| 06:55 MST |  Clear | -4°C / 25°F | -11°C / 12°F | 59% | 1020 mb (30.12 in) | E 6 kph (E 3.5 mph) | - | 10SM |
| | KSGU 251355Z AUTO 08003KT 10SM CLR M04/M11 A3013 RMK AO1 |
| 06:35 MST |  Clear | -3°C / 27°F | -11°C / 12°F | 54% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KSGU 251335Z AUTO 00000KT 10SM CLR M03/M11 A3013 RMK AO1 |
| 06:15 MST |  Clear | -4°C / 25°F | -11°C / 12°F | 59% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KSGU 251315Z AUTO 00000KT 10SM CLR M04/M11 A3012 RMK AO1 |
| 05:55 MST |  Clear | -4°C / 25°F | -11°C / 12°F | 59% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KSGU 251255Z AUTO 00000KT 10SM CLR M04/M11 A3013 RMK AO1 |
| 05:35 MST |  Clear | -3°C / 27°F | -11°C / 12°F | 54% | 1020 mb (30.12 in) | E 7 kph (E 4.6 mph) | - | 10SM |
| | KSGU 251235Z AUTO 08004KT 10SM CLR M03/M11 A3013 RMK AO1 |
| 05:15 MST |  Clear | -3°C / 27°F | -11°C / 12°F | 54% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KSGU 251215Z AUTO 00000KT 10SM CLR M03/M11 A3013 RMK AO1 |
| 04:55 MST |  Clear | -3°C / 27°F | -11°C / 12°F | 54% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KSGU 251155Z AUTO 00000KT 10SM CLR M03/M11 A3013 RMK AO1 10010 21030 57010 |
| 04:35 MST |  Clear | -3°C / 27°F | -11°C / 12°F | 54% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 251135Z AUTO 00000KT 10SM CLR M03/M11 A3014 RMK AO1 |
| 04:15 MST |  Clear | -3°C / 27°F | -11°C / 12°F | 54% | 1021 mb (30.15 in) | ENE 6 kph (ENE 3.5 mph) | - | 10SM |
| | KSGU 251115Z AUTO 07003KT 10SM CLR M03/M11 A3015 RMK AO1 |
| 03:55 MST |  Clear | -2°C / 28°F | -11°C / 12°F | 51% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 251055Z AUTO 00000KT 10SM CLR M02/M11 A3016 RMK AO1 |
| 03:35 MST |  Clear | -2°C / 28°F | -11°C / 12°F | 51% | 1021 mb (30.15 in) | E 7 kph (E 4.6 mph) | - | 10SM |
| | KSGU 251035Z AUTO 08004KT 10SM CLR M02/M11 A3016 RMK AO1 |
| 03:15 MST |  Clear | -2°C / 28°F | -11°C / 12°F | 51% | 1021 mb (30.15 in) | E 9 kph (E 5.8 mph) | - | 10SM |
| | KSGU 251015Z AUTO 08005KT 10SM CLR M02/M11 A3016 RMK AO1 |
| 02:55 MST |  Clear | -2°C / 28°F | -11°C / 12°F | 51% | 1021 mb (30.15 in) | E 6 kph (E 3.5 mph) | - | 10SM |
| | KSGU 250955Z AUTO 10003KT 10SM CLR M02/M11 A3016 RMK AO1 |
| 02:35 MST |  Clear | -2°C / 28°F | -11°C / 12°F | 51% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 250935Z AUTO 00000KT 10SM CLR M02/M11 A3016 RMK AO1 |
| 02:15 MST |  Clear | -1°C / 30°F | -11°C / 12°F | 47% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 250915Z AUTO 00000KT 10SM CLR M01/M11 A3016 RMK AO1 |
| 01:55 MST |  Clear | -1°C / 30°F | -11°C / 12°F | 47% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 250855Z AUTO 00000KT 10SM CLR M01/M11 A3016 RMK AO1 57010 |
| 01:35 MST |  Clear | -2°C / 28°F | -11°C / 12°F | 51% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 250835Z AUTO 00000KT 10SM CLR M02/M11 A3016 RMK AO1 |
| 01:15 MST |  Clear | -2°C / 28°F | -11°C / 12°F | 51% | 1021 mb (30.15 in) | Calm | - | 10SM |
| | KSGU 250815Z AUTO 00000KT 10SM CLR M02/M11 A3016 RMK AO1 |
| 00:55 MST |  Clear | -1°C / 30°F | -11°C / 12°F | 47% | 1022 mb (30.18 in) | NE 7 kph (NE 4.6 mph) | - | 10SM |
| | KSGU 250755Z AUTO 05004KT 10SM CLR M01/M11 A3017 RMK AO1 |
| 00:35 MST |  Clear | 0°C / 32°F | -11°C / 12°F | 44% | 1022 mb (30.18 in) | ENE 7 kph (ENE 4.6 mph) | - | 10SM |
| | KSGU 250735Z AUTO 07004KT 10SM CLR 00/M11 A3017 RMK AO1 |
| 00:15 MST |  Clear | 0°C / 32°F | -11°C / 12°F | 44% | 1022 mb (30.18 in) | ENE 9 kph (ENE 5.8 mph) | - | 10SM |
| | KSGU 250715Z AUTO 07005KT 10SM CLR 00/M11 A3018 RMK AO1 |