| 08:53 MST |  Overcast Unknown Precip | -4°C / 25°F | -8°C / 18°F | 74% | 1002 mb (29.59 in) | SSW 39 kph (SSW 24.2 mph) | 0.00 mm (0.00 in) | 10SM |
| | KGUP 081553Z AUTO 24021G35KT 10SM UP OVC028 M04/M08 A2959 RMK AO2 PK WND 24035/1548 SNB41E43 SLP041 P0000 T10391083 |
| 08:24 MST |  Overcast Unknown Precip | -4°C / 25°F | -8°C / 18°F | 74% | 1002 mb (29.59 in) | SSW 37 kph (SSW 23 mph) | 0.00 mm (0.00 in) | 10SM |
| | KGUP 081524Z AUTO 24020G31KT 10SM UP BKN028 BKN033 OVC044 M04/M08 A2959 RMK AO2 PK WND 25033/1457 P0000 |
| 07:53 MST |  Mostly Cloudy Unknown Precip | -4°C / 25°F | -9°C / 16°F | 69% | 1001 mb (29.56 in) | SSW 50 kph (SSW 31.1 mph) | 0.00 mm (0.00 in) | 10SM |
| | KGUP 081453Z AUTO 24027G37KT 10SM UP SCT028 SCT035 BKN044 M04/M09 A2955 RMK AO2 PK WND 24037/1451 UPB51 SLP026 P0000 60000 T10391089 51031 |
| 06:53 MST |  Mostly Cloudy | -4°C / 25°F | -8°C / 18°F | 74% | 1000 mb (29.53 in) | SSW 39 kph (SSW 24.2 mph) | - | 10SM |
| | KGUP 081353Z AUTO 24021G33KT 10SM FEW027 BKN034 M04/M08 A2952 RMK AO2 PK WND 24036/1311 SLP013 T10391083 |
| 05:53 MST |  Overcast | -3°C / 27°F | -7°C / 19°F | 74% | 998 mb (29.47 in) | SSW 37 kph (SSW 23 mph) | - | 10SM |
| | KGUP 081253Z AUTO 25020G30KT 10SM SCT026 BKN036 OVC044 M03/M07 A2948 RMK AO2 PK WND 25041/1159 SLP997 T10281067 $ |
| 04:53 MST |  Overcast | -2°C / 28°F | -7°C / 19°F | 69% | 997 mb (29.44 in) | SSW 48 kph (SSW 29.9 mph) | 0.00 mm (0.00 in) | 10SM |
| | KGUP 081153Z AUTO 25026G43KT 10SM OVC060 M02/M07 A2944 RMK AO2 PK WND 25047/1111 SNE25 SLP971 P0000 6//// 7//// T10171072 10028 21017 $ |
| 04:28 MST |  Overcast | -1°C / 30°F | -6°C / 21°F | 69% | 997 mb (29.44 in) | SSW 57 kph (SSW 35.7 mph) | 0.00 mm (0.00 in) | 9SM |
| | KGUP 081128Z AUTO 25031G45KT 9SM FEW021 OVC060 M01/M06 A2943 RMK AO2 PK WND 25047/1111 SNE25 P0000 $ |
| 04:19 MST |  Overcast Light Snow | -2°C / 28°F | -5°C / 23°F | 80% | 996 mb (29.41 in) | SSW 59 kph (SSW 36.8 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGUP 081119Z AUTO 25032G47KT 3SM -SN FEW023 BKN029 OVC042 M02/M05 A2942 RMK AO2 PK WND 25047/1111 P0000 $ |
| 04:12 MST |  Overcast Light Snow | -2°C / 28°F | -4°C / 25°F | 86% | 996 mb (29.41 in) | SSW 72 kph (SSW 44.9 mph) | 0.00 mm (0.00 in) | 2SM |
| | KGUP 081112Z AUTO 25039G47KT 2SM -SN SCT023 OVC030 M02/M04 A2941 RMK AO2 PK WND 25047/1111 P0000 $ |
| 03:52 MST |  Overcast Light Snow | -1°C / 30°F | -4°C / 25°F | 80% | 995 mb (29.38 in) | SSW 70 kph (SSW 43.7 mph) | - | 4SM |
| | KGUP 081052Z AUTO 25038G50KT 4SM -SN SCT018 BKN025 OVC032 M01/M04 A2939 RMK AO2 PK WND 25050/1052 UPB12E22SNEMMB22 SLP950 T10061039 $ |
| 03:51 MST |  Overcast Light Snow | -1°C / 30°F | -4°C / 25°F | 80% | 995 mb (29.38 in) | SSW 65 kph (SSW 40.3 mph) | - | 3SM |
| | KGUP 081051Z AUTO 25035G46KT 3SM -SN SCT018 BKN025 OVC032 M01/M04 A2939 RMK AO2 PK WND 26046/1051 UPB12E22SNEMMB22 $ |
| 03:41 MST |  Overcast Light Snow | -1°C / 30°F | -3°C / 27°F | 86% | 995 mb (29.38 in) | SSW 56 kph (SSW 34.5 mph) | - | 1 3/4SM |
| | KGUP 081041Z AUTO 25030G41KT 1 3/4SM -SN SCT014 BKN023 OVC029 M01/M03 A2938 RMK AO2 PK WND 25046/1011 VIS 1V5 UPB12E22SNEMMB22 $ |
| 03:36 MST |  Overcast Light Snow | 0°C / 32°F | -3°C / 27°F | 80% | 995 mb (29.38 in) | SSW 48 kph (SSW 29.9 mph) | - | 3SM |
| | KGUP 081036Z AUTO 25026G40KT 3SM -SN FEW008 BKN023 OVC032 00/M03 A2938 RMK AO2 PK WND 25046/1011 UPB12E22SNEMMB22 $ |
| 02:53 MST |  Light Snow | 1°C / 34°F | -2°C / 28°F | 81% | 994 mb (29.35 in) | Calm | 0.76 mm (0.03 in) | 5SM |
| | KGUP 080953Z AUTO 5SM -SN 01/M02 A2935 RMK AO2 SNB36 SLP930 P0003 T00061022 $ |
| 02:27 MST |  Overcast Light Snow | 1°C / 34°F | -1°C / 30°F | 87% | 994 mb (29.35 in) | SSW 52 kph (SSW 32.2 mph) | 0.76 mm (0.03 in) | 3/4SM |
| | KGUP 080927Z AUTO 24028G45KT 3/4SM -SN BR BKN005 OVC013 01/M01 A2934 RMK AO2 PK WND 22053/0911 P0003 |
| 02:17 MST |  Overcast Light Snow | 1°C / 34°F | -1°C / 30°F | 87% | 993 mb (29.32 in) | SW 70 kph (SW 43.7 mph) | 0.76 mm (0.03 in) | 1 1/4SM |
| | KGUP 080917Z AUTO 23038G53KT 1 1/4SM -SN BR BKN007 OVC012 01/M01 A2933 RMK AO2 PK WND 22053/0911 P0003 |
| 02:10 MST |  Overcast Light Snow | 1°C / 34°F | -1°C / 30°F | 87% | 993 mb (29.32 in) | SW 59 kph (SW 36.8 mph) | 0.51 mm (0.02 in) | 1 1/4SM |
| | KGUP 080910Z AUTO 22032G47KT 1 1/4SM -SN BR BKN011 OVC016 01/M01 A2932 RMK AO2 PK WND 22047/0910 P0002 |
| 02:02 MST |  Overcast Light Snow | 1°C / 34°F | -1°C / 30°F | 87% | 993 mb (29.32 in) | SSW 39 kph (SSW 24.2 mph) | 0.25 mm (0.01 in) | 2 1/2SM |
| | KGUP 080902Z AUTO 24021G29KT 2 1/2SM -SN BR BKN014 OVC020 01/M01 A2932 RMK AO2 PK WND 24029/0902 VIS 1V5 PRESRR P0001 |
| 01:53 MST |  Overcast Light Snow | 2°C / 36°F | -1°C / 30°F | 81% | 992 mb (29.29 in) | SSE 41 kph (SSE 25.3 mph) | 0.00 mm (0.00 in) | 5SM |
| | KGUP 080853Z AUTO 20022G33KT 5SM -SN BR BKN020 BKN037 OVC047 02/M01 A2928 RMK AO2 PK WND 21039/0843 UPB03E45SNB45 SLP902 P0000 60000 T00171006 55025 |
| 01:49 MST |  Overcast Light Snow | 2°C / 36°F | -1°C / 30°F | 81% | 992 mb (29.29 in) | SSE 37 kph (SSE 23 mph) | 0.00 mm (0.00 in) | 7SM |
| | KGUP 080849Z AUTO 20020G39KT 7SM -SN BKN022 BKN030 OVC037 02/M01 A2928 RMK AO2 PK WND 21039/0843 UPB03E45SNB45 P0000 |
| 00:53 MST |  Overcast | 3°C / 37°F | -1°C / 30°F | 75% | 993 mb (29.32 in) | SW 37 kph (SW 23 mph) | 0.00 mm (0.00 in) | 9SM |
| | KGUP 080753Z AUTO 21020G34KT 9SM SCT036 OVC047 03/M01 A2933 RMK AO2 PK WND 19036/0714 UPE20B36E52SNB03E15B38E48 SLP919 P0000 T00281006 |