| 21:15 MST |  Overcast | -23°C / -9°F | -26°C / -15°F | 77% | 1023 mb (30.21 in) | NW 6 kph (NW 3.5 mph) | - | 10SM |
| | KSDY 080415Z AUTO 32003KT 10SM SCT041 OVC055 M23/M26 A3021 RMK AO1 |
| 20:55 MST |  Mostly Cloudy | -23°C / -9°F | -25°C / -13°F | 84% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KSDY 080355Z AUTO 00000KT 10SM BKN041 M23/M25 A3022 RMK AO1 |
| 20:35 MST |  Clear | -24°C / -11°F | -28°C / -18°F | 70% | 1023 mb (30.21 in) | NW 7 kph (NW 4.6 mph) | - | 10SM |
| | KSDY 080335Z AUTO 31004KT 10SM CLR M24/M28 A3022 RMK AO1 |
| 20:15 MST |  Clear | -23°C / -9°F | -26°C / -15°F | 77% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KSDY 080315Z AUTO 00000KT 10SM CLR M23/M26 A3022 RMK AO1 |
| 19:55 MST |  Clear | -23°C / -9°F | -26°C / -15°F | 77% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KSDY 080255Z AUTO 00000KT 10SM CLR M23/M26 A3022 RMK AO1 57010 |
| 19:35 MST |  Clear | -23°C / -9°F | -26°C / -15°F | 77% | 1023 mb (30.21 in) | NW 9 kph (NW 5.8 mph) | - | 10SM |
| | KSDY 080235Z AUTO 31005KT 10SM CLR M23/M26 A3022 RMK AO1 |
| 19:15 MST |  Partly Cloudy | -22°C / -8°F | -25°C / -13°F | 77% | 1024 mb (30.24 in) | NW 9 kph (NW 5.8 mph) | - | 10SM |
| | KSDY 080215Z AUTO 31005KT 10SM FEW046 M22/M25 A3023 RMK AO1 |
| 18:55 MST |  Mostly Cloudy | -22°C / -8°F | -27°C / -17°F | 64% | 1024 mb (30.24 in) | NW 7 kph (NW 4.6 mph) | - | 10SM |
| | KSDY 080155Z AUTO 31004KT 10SM BKN046 M22/M27 A3024 RMK AO1 |
| 18:35 MST |  Mostly Cloudy | -22°C / -8°F | -23°C / -9°F | 92% | 1024 mb (30.24 in) | NW 7 kph (NW 4.6 mph) | - | 10SM |
| | KSDY 080135Z AUTO 30004KT 10SM BKN046 M22/M23 A3024 RMK AO1 |
| 18:15 MST |  Clear | -22°C / -8°F | -27°C / -17°F | 64% | 1024 mb (30.24 in) | NW 6 kph (NW 3.5 mph) | - | 10SM |
| | KSDY 080115Z AUTO 31003KT 10SM CLR M22/M27 A3024 RMK AO1 |
| 17:55 MST |  Clear | -22°C / -8°F | -24°C / -11°F | 84% | 1024 mb (30.24 in) | NW 7 kph (NW 4.6 mph) | - | 10SM |
| | KSDY 080055Z AUTO 32004KT 10SM CLR M22/M24 A3023 RMK AO1 |
| 17:35 MST |  Clear | -22°C / -8°F | -26°C / -15°F | 70% | 1024 mb (30.24 in) | NW 6 kph (NW 3.5 mph) | - | 9SM |
| | KSDY 080035Z AUTO 30003KT 9SM CLR M22/M26 A3024 RMK AO1 |
| 17:15 MST |  Clear | -21°C / -6°F | -27°C / -17°F | 59% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KSDY 080015Z AUTO 00000KT 10SM CLR M21/M27 A3024 RMK AO1 |
| 16:55 MST |  Clear | -19°C / -2°F | -22°C / -8°F | 77% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KSDY 072355Z AUTO 00000KT 10SM CLR M19/M22 A3025 RMK AO1 11150 21190 411101230 57003 |
| 16:35 MST |  Clear | -19°C / -2°F | -22°C / -8°F | 77% | 1024 mb (30.24 in) | NW 6 kph (NW 3.5 mph) | - | 10SM |
| | KSDY 072335Z AUTO 30003KT 10SM CLR M19/M22 A3025 RMK AO1 |
| 16:15 MST |  Clear | -19°C / -2°F | -23°C / -9°F | 71% | 1024 mb (30.24 in) | NW 7 kph (NW 4.6 mph) | - | 10SM |
| | KSDY 072315Z AUTO 30004KT 10SM CLR M19/M23 A3025 RMK AO1 |
| 15:55 MST |  Clear | -17°C / 1°F | -23°C / -9°F | 60% | 1024 mb (30.24 in) | NW 7 kph (NW 4.6 mph) | - | 10SM |
| | KSDY 072255Z AUTO 32004KT 10SM CLR M17/M23 A3025 RMK AO1 |
| 15:35 MST |  Partly Cloudy | -16°C / 3°F | -19°C / -2°F | 78% | 1024 mb (30.24 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KSDY 072235Z AUTO 33003KT 10SM FEW024 M16/M19 A3025 RMK AO1 |
| 15:15 MST |  Partly Cloudy | -16°C / 3°F | -21°C / -6°F | 66% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KSDY 072215Z AUTO 00000KT 10SM FEW024 M16/M21 A3026 RMK AO1 |
| 14:55 MST |  Clear | -16°C / 3°F | -19°C / -2°F | 78% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KSDY 072155Z AUTO 00000KT 10SM CLR M16/M19 A3026 RMK AO1 |
| 14:35 MST |  Clear | -16°C / 3°F | -21°C / -6°F | 66% | 1025 mb (30.27 in) | WNW 6 kph (WNW 3.5 mph) | - | 10SM |
| | KSDY 072135Z AUTO 29003KT 10SM CLR M16/M21 A3026 RMK AO1 |
| 14:15 MST |  Clear | -16°C / 3°F | -21°C / -6°F | 66% | 1025 mb (30.27 in) | NW 7 kph (NW 4.6 mph) | - | 10SM |
| | KSDY 072115Z AUTO 30004KT 10SM CLR M16/M21 A3026 RMK AO1 |
| 13:55 MST |  Partly Cloudy | -16°C / 3°F | -19°C / -2°F | 78% | 1025 mb (30.27 in) | NW 7 kph (NW 4.6 mph) | - | 10SM |
| | KSDY 072055Z AUTO 30004KT 10SM FEW018 M16/M19 A3026 RMK AO1 57024 |
| 13:35 MST |  Partly Cloudy | -16°C / 3°F | -20°C / -4°F | 72% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KSDY 072035Z AUTO 00000KT 10SM SCT018 M16/M20 A3027 RMK AO1 |
| 13:15 MST |  Mostly Cloudy | -16°C / 3°F | -20°C / -4°F | 72% | 1025 mb (30.27 in) | W 7 kph (W 4.6 mph) | - | 10SM |
| | KSDY 072015Z AUTO 27004KT 10SM BKN018 BKN100 M16/M20 A3027 RMK AO1 |
| 12:55 MST |  Partly Cloudy | -16°C / 3°F | -19°C / -2°F | 78% | 1025 mb (30.27 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KSDY 071955Z AUTO 22004KT 10SM FEW100 M16/M19 A3028 RMK AO1 |
| 12:35 MST |  Partly Cloudy | -16°C / 3°F | -19°C / -2°F | 78% | 1026 mb (30.3 in) | SW 7 kph (SW 4.6 mph) | - | 10SM |
| | KSDY 071935Z AUTO 23004KT 10SM FEW100 M16/M19 A3029 RMK AO1 |
| 12:15 MST |  Partly Cloudy | -16°C / 3°F | -19°C / -2°F | 78% | 1026 mb (30.3 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KSDY 071915Z AUTO 24004KT 10SM FEW110 M16/M19 A3029 RMK AO1 |
| 11:55 MST |  Partly Cloudy | -16°C / 3°F | -19°C / -2°F | 78% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KSDY 071855Z AUTO 00000KT 10SM FEW013 M16/M19 A3030 RMK AO1 |
| 11:35 MST |  Partly Cloudy | -16°C / 3°F | -19°C / -2°F | 78% | 1026 mb (30.3 in) | SW 6 kph (SW 3.5 mph) | - | 10SM |
| | KSDY 071835Z AUTO 22003KT 10SM FEW013 M16/M19 A3031 RMK AO1 |
| 11:15 MST |  Clear | -16°C / 3°F | -19°C / -2°F | 78% | 1027 mb (30.33 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KSDY 071815Z AUTO 19003KT 10SM CLR M16/M19 A3032 RMK AO1 |
| 10:55 MST |  Clear | -17°C / 1°F | -21°C / -6°F | 71% | 1027 mb (30.33 in) | Calm | - | 10SM |
| | KSDY 071755Z AUTO 00000KT 10SM CLR M17/M21 A3033 RMK AO1 11170 21230 57007 |
| 10:35 MST |  Partly Cloudy | -17°C / 1°F | -20°C / -4°F | 78% | 1027 mb (30.33 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KSDY 071735Z AUTO 20003KT 10SM FEW024 M17/M20 A3034 RMK AO1 |
| 10:15 MST |  Mostly Cloudy | -18°C / 0°F | -21°C / -6°F | 78% | 1027 mb (30.33 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KSDY 071715Z AUTO 18003KT 10SM BKN026 M18/M21 A3034 RMK AO1 |
| 09:55 MST |  Overcast | -18°C / 0°F | -21°C / -6°F | 78% | 1028 mb (30.36 in) | Calm | - | 8SM |
| | KSDY 071655Z AUTO 00000KT 8SM OVC026 M18/M21 A3035 RMK AO1 |
| 09:35 MST |  Overcast | -19°C / -2°F | -21°C / -6°F | 84% | 1028 mb (30.36 in) | S 6 kph (S 3.5 mph) | - | 9SM |
| | KSDY 071635Z AUTO 18003KT 9SM OVC026 M19/M21 A3035 RMK AO1 |
| 09:15 MST |  Overcast | -19°C / -2°F | -23°C / -9°F | 71% | 1028 mb (30.36 in) | S 6 kph (S 3.5 mph) | - | 8SM |
| | KSDY 071615Z AUTO 18003KT 8SM OVC026 M19/M23 A3035 RMK AO1 |
| 08:55 MST |  Overcast | -19°C / -2°F | -22°C / -8°F | 77% | 1028 mb (30.36 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KSDY 071555Z AUTO 17003KT 10SM OVC026 M19/M22 A3036 RMK AO1 |
| 08:35 MST |  Overcast | -20°C / -4°F | -22°C / -8°F | 84% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 071535Z AUTO 00000KT 10SM OVC026 M20/M22 A3035 RMK AO1 |
| 08:15 MST |  Overcast | -21°C / -6°F | -23°C / -9°F | 84% | 1028 mb (30.36 in) | Calm | - | 7SM |
| | KSDY 071515Z AUTO 00000KT 7SM OVC026 M21/M23 A3035 RMK AO1 |
| 07:55 MST |  Overcast | -21°C / -6°F | -23°C / -9°F | 84% | 1028 mb (30.36 in) | S 6 kph (S 3.5 mph) | - | 8SM |
| | KSDY 071455Z AUTO 19003KT 8SM OVC026 M21/M23 A3035 RMK AO1 54000 |
| 07:35 MST |  Overcast | -21°C / -6°F | -24°C / -11°F | 77% | 1028 mb (30.36 in) | Calm | - | 5SM |
| | KSDY 071435Z AUTO 00000KT 5SM BKN026 BKN036 OVC046 M21/M24 A3036 RMK AO1 |
| 07:15 MST |  Overcast | -21°C / -6°F | -23°C / -9°F | 84% | 1028 mb (30.36 in) | Calm | - | 8SM |
| | KSDY 071415Z AUTO 00000KT 8SM OVC048 M21/M23 A3036 RMK AO1 |
| 06:55 MST |  Overcast | -21°C / -6°F | -24°C / -11°F | 77% | 1028 mb (30.36 in) | SW 6 kph (SW 3.5 mph) | - | 10SM |
| | KSDY 071355Z AUTO 21003KT 10SM SCT050 BKN065 OVC090 M21/M24 A3036 RMK AO1 |
| 06:35 MST |  Mostly Cloudy | -21°C / -6°F | -24°C / -11°F | 77% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 071335Z AUTO 00000KT 10SM SCT060 BKN075 BKN085 M21/M24 A3036 RMK AO1 |
| 06:15 MST |  Partly Cloudy | -22°C / -8°F | -25°C / -13°F | 77% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 071315Z AUTO 00000KT 10SM FEW060 M22/M25 A3036 RMK AO1 |
| 05:55 MST |  Clear | -22°C / -8°F | -24°C / -11°F | 84% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 071255Z AUTO 00000KT 10SM CLR M22/M24 A3036 RMK AO1 |
| 05:35 MST |  Clear | -22°C / -8°F | -25°C / -13°F | 77% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 071235Z AUTO 00000KT 10SM CLR M22/M25 A3035 RMK AO1 |
| 05:15 MST |  Clear | -22°C / -8°F | -24°C / -11°F | 84% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 071215Z AUTO 00000KT 10SM CLR M22/M24 A3035 RMK AO1 |
| 04:55 MST |  Partly Cloudy | -21°C / -6°F | -24°C / -11°F | 77% | 1028 mb (30.36 in) | Calm | - | 9SM |
| | KSDY 071155Z AUTO 00000KT 9SM SCT028 M21/M24 A3035 RMK AO1 11190 21210 57007 |
| 04:35 MST |  Mostly Cloudy | -21°C / -6°F | -22°C / -8°F | 92% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 071135Z AUTO 00000KT 10SM BKN030 BKN100 M21/M22 A3035 RMK AO1 |
| 04:15 MST |  Partly Cloudy | -21°C / -6°F | -25°C / -13°F | 70% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 071115Z AUTO 00000KT 10SM FEW090 SCT100 M21/M25 A3036 RMK AO1 |
| 03:55 MST |  Mostly Cloudy | -21°C / -6°F | -24°C / -11°F | 77% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 071055Z AUTO 00000KT 10SM BKN090 M21/M24 A3036 RMK AO1 |
| 03:35 MST |  Mostly Cloudy | -21°C / -6°F | -24°C / -11°F | 77% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 071035Z AUTO 00000KT 10SM BKN090 M21/M24 A3037 RMK AO1 |
| 03:15 MST |  Partly Cloudy | -21°C / -6°F | -23°C / -9°F | 84% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 071015Z AUTO 00000KT 10SM FEW110 M21/M23 A3037 RMK AO1 |
| 02:55 MST |  Partly Cloudy | -20°C / -4°F | -24°C / -11°F | 71% | 1028 mb (30.36 in) | Calm | - | 10SM |
| | KSDY 070955Z AUTO 00000KT 10SM FEW110 M20/M24 A3037 RMK AO1 |
| 02:35 MST |  Clear | -20°C / -4°F | -23°C / -9°F | 77% | 1029 mb (30.39 in) | Calm | - | 10SM |
| | KSDY 070935Z AUTO 00000KT 10SM CLR M20/M23 A3038 RMK AO1 |
| 02:15 MST |  Clear | -20°C / -4°F | -23°C / -9°F | 77% | 1029 mb (30.39 in) | Calm | - | 10SM |
| | KSDY 070915Z AUTO 00000KT 10SM CLR M20/M23 A3038 RMK AO1 |
| 01:55 MST |  Partly Cloudy | -20°C / -4°F | -23°C / -9°F | 77% | 1028 mb (30.36 in) | NW 9 kph (NW 5.8 mph) | - | 10SM |
| | KSDY 070855Z AUTO 31005KT 10SM FEW065 M20/M23 A3037 RMK AO1 57007 |
| 01:35 MST |  Clear | -21°C / -6°F | -23°C / -9°F | 84% | 1028 mb (30.36 in) | NW 11 kph (NW 6.9 mph) | - | 10SM |
| | KSDY 070835Z AUTO 31006KT 10SM CLR M21/M23 A3037 RMK AO1 |
| 01:15 MST |  Clear | -21°C / -6°F | -24°C / -11°F | 77% | 1029 mb (30.39 in) | Calm | - | 10SM |
| | KSDY 070815Z AUTO 00000KT 10SM CLR M21/M24 A3038 RMK AO1 |
| 00:55 MST |  Clear | -21°C / -6°F | -24°C / -11°F | 77% | 1029 mb (30.39 in) | NW 7 kph (NW 4.6 mph) | - | 10SM |
| | KSDY 070755Z AUTO 32004KT 10SM CLR M21/M24 A3038 RMK AO1 |
| 00:35 MST |  Clear | -20°C / -4°F | -22°C / -8°F | 84% | 1029 mb (30.39 in) | NW 13 kph (NW 8.1 mph) | - | 10SM |
| | KSDY 070735Z AUTO 30007KT 10SM CLR M20/M22 A3038 RMK AO1 |
| 00:15 MST |  Clear | -21°C / -6°F | -23°C / -9°F | 84% | 1029 mb (30.39 in) | NW 13 kph (NW 8.1 mph) | - | 10SM |
| | KSDY 070715Z AUTO 30007KT 10SM CLR M21/M23 A3038 RMK AO1 |