| 12:35 MST |  Clear | -17°C / 1°F | -26°C / -15°F | 46% | 1006 mb (29.71 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KFNL 091935Z AUTO 17003KT 10SM CLR M17/M26 A2971 RMK AO1 |
| 12:15 MST |  Clear | -17°C / 1°F | -22°C / -8°F | 65% | 1006 mb (29.71 in) | Calm | - | 10SM |
| | KFNL 091915Z AUTO 00000KT 10SM CLR M17/M22 A2971 RMK AO1 |
| 11:55 MST |  Clear | -17°C / 1°F | N/A | N/A | 1006 mb (29.71 in) | Calm | - | 10SM |
| | KFNL 091855Z AUTO 00000KT 10SM CLR M17/ A2972 RMK AO1 |
| 11:35 MST |  Clear | -19°C / -2°F | -19°C / -2°F | 100% | 1007 mb (29.74 in) | NW 6 kph (NW 3.5 mph) | - | 10SM |
| | KFNL 091835Z AUTO 31003KT 10SM CLR M19/M19 A2974 RMK AO1 |
| 11:15 MST |  Clear | -20°C / -4°F | -22°C / -8°F | 84% | 1008 mb (29.77 in) | N 7 kph (N 4.6 mph) | - | 10SM |
| | KFNL 091815Z AUTO 36004KT 10SM CLR M20/M22 A2976 RMK AO1 |
| 10:55 MST |  Clear | -21°C / -6°F | -24°C / -11°F | 77% | 1008 mb (29.77 in) | N 9 kph (N 5.8 mph) | - | 10SM |
| | KFNL 091755Z AUTO 36005KT 10SM CLR M21/M24 A2976 RMK AO1 11190 21250 57007 |
| 10:35 MST |  Clear | -19°C / -2°F | -19°C / -2°F | 100% | 1008 mb (29.77 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KFNL 091735Z AUTO 34003KT 10SM CLR M19/M19 A2976 RMK AO1 |
| 10:15 MST |  Clear | -20°C / -4°F | -21°C / -6°F | 92% | 1008 mb (29.77 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KFNL 091715Z AUTO 14004KT 10SM CLR M20/M21 A2976 RMK AO1 |
| 09:55 MST |  Clear | -21°C / -6°F | -26°C / -15°F | 64% | 1008 mb (29.77 in) | ENE 6 kph (ENE 3.5 mph) | - | 8SM |
| | KFNL 091655Z AUTO 06003KT 8SM CLR M21/M26 A2978 RMK AO1 |
| 09:35 MST |  Clear | -22°C / -8°F | -22°C / -8°F | 100% | 1008 mb (29.77 in) | NE 7 kph (NE 4.6 mph) | - | 6SM |
| | KFNL 091635Z AUTO 04004KT 6SM CLR M22/M22 A2978 RMK AO1 |
| 09:15 MST |  Clear | -23°C / -9°F | -27°C / -17°F | 70% | 1008 mb (29.77 in) | N 9 kph (N 5.8 mph) | - | 5SM |
| | KFNL 091615Z AUTO 01005KT 5SM CLR M23/M27 A2978 RMK AO1 |
| 08:55 MST |  Partly Cloudy | -24°C / -11°F | -24°C / -11°F | 100% | 1008 mb (29.77 in) | Calm | - | 3SM |
| | KFNL 091555Z AUTO 00000KT 3SM FEW002 M24/M24 A2978 RMK AO1 |
| 08:35 MST |  Partly Cloudy | -25°C / -13°F | -28°C / -18°F | 76% | 1008 mb (29.77 in) | N 9 kph (N 5.8 mph) | - | 7SM |
| | KFNL 091535Z AUTO 36005KT 7SM SCT002 M25/M28 A2978 RMK AO1 |
| 08:15 MST |  Clear | -23°C / -9°F | -23°C / -9°F | 100% | 1009 mb (29.8 in) | Calm | - | 9SM |
| | KFNL 091515Z AUTO 00000KT 9SM CLR M23/M23 A2979 RMK AO1 |
| 07:55 MST |  Partly Cloudy | -24°C / -11°F | -24°C / -11°F | 100% | 1008 mb (29.77 in) | Calm | - | 8SM |
| | KFNL 091455Z AUTO 00000KT 8SM SCT002 M24/M24 A2978 RMK AO1 57003 |
| 07:35 MST |  Mostly Cloudy | -23°C / -9°F | -28°C / -18°F | 64% | 1008 mb (29.77 in) | Calm | - | 1 1/4SM |
| | KFNL 091435Z AUTO 00000KT 1 1/4SM BKN002 M23/M28 A2978 RMK AO1 |
| 07:15 MST |  Clear | -23°C / -9°F | N/A | N/A | 1008 mb (29.77 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KFNL 091415Z AUTO 17004KT 10SM CLR M23/ A2978 RMK AO1 |
| 06:55 MST |  Clear | -23°C / -9°F | -30°C / -22°F | 53% | 1008 mb (29.77 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KFNL 091355Z AUTO 18005KT 10SM CLR M23/M30 A2978 RMK AO1 |
| 06:35 MST |  Clear | -23°C / -9°F | N/A | N/A | 1009 mb (29.8 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KFNL 091335Z AUTO 18005KT 10SM CLR M23/ A2979 RMK AO1 |
| 06:15 MST |  Clear | -23°C / -9°F | -31°C / -24°F | 48% | 1009 mb (29.8 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KFNL 091315Z AUTO 19005KT 10SM CLR M23/M31 A2979 RMK AO1 |
| 05:55 MST |  Clear | -23°C / -9°F | -23°C / -9°F | 100% | 1009 mb (29.8 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KFNL 091255Z AUTO 17005KT 10SM CLR M23/M23 A2979 RMK AO1 |
| 05:35 MST |  Clear | -23°C / -9°F | -26°C / -15°F | 77% | 1009 mb (29.8 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KFNL 091235Z AUTO 17004KT 10SM CLR M23/M26 A2979 RMK AO1 |
| 05:15 MST |  Clear | -24°C / -11°F | -28°C / -18°F | 70% | 1009 mb (29.8 in) | SW 9 kph (SW 5.8 mph) | - | 10SM |
| | KFNL 091215Z AUTO 21005KT 10SM CLR M24/M28 A2979 RMK AO1 |
| 04:55 MST |  Clear | -24°C / -11°F | -25°C / -13°F | 91% | 1009 mb (29.8 in) | S 13 kph (S 8.1 mph) | - | 10SM |
| | KFNL 091155Z AUTO 18007KT 10SM CLR M24/M25 A2979 RMK AO1 11210 21240 54000 |
| 04:35 MST |  Clear | -23°C / -9°F | -26°C / -15°F | 77% | 1009 mb (29.8 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KFNL 091135Z AUTO 14004KT 10SM CLR M23/M26 A2979 RMK AO1 |
| 04:15 MST |  Clear | -22°C / -8°F | -22°C / -8°F | 100% | 1008 mb (29.77 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KFNL 091115Z AUTO 18004KT 10SM CLR M22/M22 A2978 RMK AO1 |
| 03:55 MST |  Clear | -22°C / -8°F | -27°C / -17°F | 64% | 1009 mb (29.8 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KFNL 091055Z AUTO 17004KT 10SM CLR M22/M27 A2979 RMK AO1 |
| 03:35 MST |  Clear | -22°C / -8°F | N/A | N/A | 1009 mb (29.8 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KFNL 091035Z AUTO 19003KT 10SM CLR M22/ A2979 RMK AO1 |
| 03:15 MST |  Clear | -22°C / -8°F | -28°C / -18°F | 58% | 1009 mb (29.8 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KFNL 091015Z AUTO 19004KT 10SM CLR M22/M28 A2979 RMK AO1 |
| 02:55 MST |  Clear | -22°C / -8°F | -22°C / -8°F | 100% | 1009 mb (29.8 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KFNL 090955Z AUTO 19005KT 10SM CLR M22/M22 A2980 RMK AO1 |
| 02:35 MST |  Clear | -22°C / -8°F | -27°C / -17°F | 64% | 1009 mb (29.8 in) | SSE 9 kph (SSE 5.8 mph) | - | 10SM |
| | KFNL 090935Z AUTO 16005KT 10SM CLR M22/M27 A2980 RMK AO1 |
| 02:15 MST |  Clear | -23°C / -9°F | -26°C / -15°F | 77% | 1009 mb (29.8 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KFNL 090915Z AUTO 17004KT 10SM CLR M23/M26 A2980 RMK AO1 |
| 01:55 MST |  Clear | -23°C / -9°F | -27°C / -17°F | 70% | 1009 mb (29.8 in) | SSE 13 kph (SSE 8.1 mph) | - | 10SM |
| | KFNL 090855Z AUTO 15007KT 10SM CLR M23/M27 A2979 RMK AO1 57007 |
| 01:35 MST |  Clear | -21°C / -6°F | -22°C / -8°F | 92% | 1009 mb (29.8 in) | SSE 13 kph (SSE 8.1 mph) | - | 10SM |
| | KFNL 090835Z AUTO 15007KT 10SM CLR M21/M22 A2979 RMK AO1 |
| 01:15 MST |  Clear | -21°C / -6°F | -21°C / -6°F | 100% | 1009 mb (29.8 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KFNL 090815Z AUTO 14003KT 10SM CLR M21/M21 A2979 RMK AO1 |
| 00:55 MST |  Clear | -22°C / -8°F | -26°C / -15°F | 70% | 1009 mb (29.8 in) | Calm | - | 10SM |
| | KFNL 090755Z AUTO 00000KT 10SM CLR M22/M26 A2979 RMK AO1 |
| 00:35 MST |  Clear | -22°C / -8°F | -22°C / -8°F | 100% | 1009 mb (29.8 in) | S 11 kph (S 6.9 mph) | - | 10SM |
| | KFNL 090735Z AUTO 17006KT 10SM CLR M22/M22 A2980 RMK AO1 |
| 00:15 MST |  Clear | -22°C / -8°F | -24°C / -11°F | 84% | 1009 mb (29.8 in) | SSE 11 kph (SSE 6.9 mph) | - | 10SM |
| | KFNL 090715Z AUTO 16006KT 10SM CLR M22/M24 A2980 RMK AO1 |