| 15:12 MST |  Clear | 2°C / 36°F | -5°C / 23°F | 60% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KLRU 042212Z AUTO 00000KT 10SM CLR 02/M05 A3019 RMK AO2 |
| 14:52 MST |  Clear | 2°C / 36°F | -6°C / 21°F | 56% | 1023 mb (30.21 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KLRU 042152Z AUTO 18003KT 10SM CLR 02/M06 A3020 RMK AO2 |
| 14:32 MST |  Clear | 2°C / 36°F | -6°C / 21°F | 56% | 1023 mb (30.21 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KLRU 042132Z AUTO 26003KT 10SM CLR 02/M06 A3020 RMK AO2 |
| 14:12 MST |  Clear | 1°C / 34°F | -6°C / 21°F | 60% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KLRU 042112Z AUTO 00000KT 10SM CLR 01/M06 A3021 RMK AO2 |
| 13:52 MST |  Partly Cloudy | 2°C / 36°F | -4°C / 25°F | 65% | 1023 mb (30.21 in) | SW 13 kph (SW 8.1 mph) | - | 10SM |
| | KLRU 042052Z AUTO 21007KT 10SM SCT027 02/M04 A3021 RMK AO2 |
| 13:32 MST |  Partly Cloudy | 1°C / 34°F | -6°C / 21°F | 60% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KLRU 042032Z AUTO 00000KT 10SM SCT025 01/M06 A3022 RMK AO2 |
| 13:12 MST |  Partly Cloudy | 0°C / 32°F | -5°C / 23°F | 69% | 1023 mb (30.21 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KLRU 042012Z AUTO 17005KT 10SM SCT025 00/M05 A3022 RMK AO2 |
| 12:52 MST |  Partly Cloudy | 0°C / 32°F | -4°C / 25°F | 75% | 1024 mb (30.24 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KLRU 041952Z AUTO 18003KT 10SM SCT021 00/M04 A3023 RMK AO2 |
| 12:32 MST |  Partly Cloudy | 0°C / 32°F | -4°C / 25°F | 75% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KLRU 041932Z AUTO 00000KT 10SM SCT021 00/M04 A3025 RMK AO2 |
| 12:12 MST |  Partly Cloudy | -1°C / 30°F | -5°C / 23°F | 75% | 1024 mb (30.24 in) | S 7 kph (S 4.6 mph) | - | 10SM |
| | KLRU 041912Z AUTO 19004KT 10SM SCT019 M01/M05 A3025 RMK AO2 |
| 11:52 MST |  Clear | -1°C / 30°F | -5°C / 23°F | 75% | 1025 mb (30.27 in) | SSE 9 kph (SSE 5.8 mph) | - | 10SM |
| | KLRU 041852Z AUTO 16005KT 10SM CLR M01/M05 A3026 RMK AO2 |
| 11:32 MST |  Clear | -2°C / 28°F | -4°C / 25°F | 86% | 1025 mb (30.27 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KLRU 041832Z AUTO 17005KT 10SM CLR M02/M04 A3028 RMK AO2 |
| 11:12 MST |  Clear | -2°C / 28°F | -6°C / 21°F | 74% | 1026 mb (30.3 in) | SSE 11 kph (SSE 6.9 mph) | - | 10SM |
| | KLRU 041812Z AUTO 16006KT 10SM CLR M02/M06 A3029 RMK AO2 |
| 10:52 MST |  Clear | -2°C / 28°F | -5°C / 23°F | 80% | 1026 mb (30.3 in) | SE 11 kph (SE 6.9 mph) | - | 10SM |
| | KLRU 041752Z AUTO 14006KT 10SM CLR M02/M05 A3030 RMK AO2 |
| 10:32 MST |  Clear | -2°C / 28°F | -6°C / 21°F | 74% | 1026 mb (30.3 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KLRU 041732Z AUTO 14004KT 10SM CLR M02/M06 A3030 RMK AO2 |
| 10:12 MST |  Clear | -3°C / 27°F | -7°C / 19°F | 74% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KLRU 041712Z AUTO 00000KT 10SM CLR M03/M07 A3030 RMK AO2 |
| 09:52 MST |  Clear | -3°C / 27°F | -7°C / 19°F | 74% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KLRU 041652Z AUTO 00000KT 10SM CLR M03/M07 A3030 RMK AO2 |
| 09:32 MST |  Clear | -4°C / 25°F | -8°C / 18°F | 74% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KLRU 041632Z AUTO 00000KT 10SM CLR M04/M08 A3030 RMK AO2 |
| 09:12 MST |  Clear | -4°C / 25°F | -8°C / 18°F | 74% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KLRU 041612Z AUTO 00000KT 10SM CLR M04/M08 A3030 RMK AO2 |
| 08:52 MST |  Clear | -5°C / 23°F | -9°C / 16°F | 74% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KLRU 041552Z AUTO 00000KT 10SM CLR M05/M09 A3029 RMK AO2 |
| 08:32 MST |  Clear | -6°C / 21°F | -8°C / 18°F | 86% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KLRU 041532Z AUTO 00000KT 10SM CLR M06/M08 A3028 RMK AO2 |
| 08:12 MST |  Clear | -7°C / 19°F | -9°C / 16°F | 86% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KLRU 041512Z AUTO 00000KT 10SM CLR M07/M09 A3028 RMK AO2 |
| 07:52 MST |  Clear | -7°C / 19°F | -9°C / 16°F | 86% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KLRU 041452Z AUTO 00000KT 10SM CLR M07/M09 A3027 RMK AO2 |
| 07:33 MST |  Clear | -8°C / 18°F | -9°C / 16°F | 93% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KLRU 041433Z AUTO 00000KT 10SM CLR M08/M09 A3025 RMK AO2 |
| 07:12 MST |  Mostly Cloudy | -7°C / 19°F | -9°C / 16°F | 86% | 1024 mb (30.24 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KLRU 041412Z AUTO 36003KT 10SM BKN017 M07/M09 A3025 RMK AO2 |
| 06:52 MST |  Overcast | -7°C / 19°F | -9°C / 16°F | 86% | 1025 mb (30.27 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KLRU 041352Z AUTO 34003KT 10SM OVC015 M07/M09 A3026 RMK AO2 |
| 06:33 MST |  Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1024 mb (30.24 in) | Calm | - | 10SM |
| | KLRU 041333Z AUTO 00000KT 10SM OVC015 M06/M08 A3025 RMK AO2 |
| 06:12 MST |  Overcast | -7°C / 19°F | -9°C / 16°F | 86% | 1024 mb (30.24 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KLRU 041312Z AUTO 35003KT 10SM OVC013 M07/M09 A3024 RMK AO2 |
| 05:52 MST |  Overcast | -7°C / 19°F | -9°C / 16°F | 86% | 1024 mb (30.24 in) | NNW 13 kph (NNW 8.1 mph) | - | 10SM |
| | KLRU 041252Z AUTO 34007KT 10SM BKN013 OVC021 M07/M09 A3023 RMK AO2 |
| 05:32 MST |  Mostly Cloudy | -8°C / 18°F | -10°C / 14°F | 86% | 1023 mb (30.21 in) | NNW 11 kph (NNW 6.9 mph) | - | 10SM |
| | KLRU 041232Z AUTO 33006KT 10SM BKN019 M08/M10 A3022 RMK AO2 |
| 05:12 MST |  Partly Cloudy | -8°C / 18°F | -11°C / 12°F | 79% | 1023 mb (30.21 in) | NW 9 kph (NW 5.8 mph) | - | 10SM |
| | KLRU 041212Z AUTO 32005KT 10SM SCT022 M08/M11 A3021 RMK AO2 |
| 04:52 MST |  Overcast | -7°C / 19°F | -8°C / 18°F | 93% | 1023 mb (30.21 in) | NW 6 kph (NW 3.5 mph) | - | 10SM |
| | KLRU 041152Z AUTO 31003KT 10SM OVC022 M07/M08 A3021 RMK AO2 |
| 04:32 MST |  Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1023 mb (30.21 in) | Calm | - | 10SM |
| | KLRU 041132Z AUTO 00000KT 10SM OVC022 M06/M08 A3020 RMK AO2 |
| 04:12 MST |  Mostly Cloudy | -7°C / 19°F | -8°C / 18°F | 93% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KLRU 041112Z AUTO 00000KT 10SM BKN022 M07/M08 A3019 RMK AO2 |
| 03:52 MST |  Mostly Cloudy | -7°C / 19°F | -8°C / 18°F | 93% | 1022 mb (30.18 in) | NNW 6 kph (NNW 3.5 mph) | - | 10SM |
| | KLRU 041052Z AUTO 33003KT 10SM BKN022 M07/M08 A3018 RMK AO2 |
| 03:32 MST |  Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1022 mb (30.18 in) | NNW 7 kph (NNW 4.6 mph) | - | 10SM |
| | KLRU 041032Z AUTO 34004KT 10SM OVC024 M06/M08 A3018 RMK AO2 |
| 03:13 MST |  Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1022 mb (30.18 in) | NNW 13 kph (NNW 8.1 mph) | - | 10SM |
| | KLRU 041013Z AUTO 34007KT 10SM OVC024 M06/M08 A3018 RMK AO2 |
| 02:52 MST |  Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1022 mb (30.18 in) | NNW 15 kph (NNW 9.2 mph) | - | 10SM |
| | KLRU 040952Z AUTO 34008KT 10SM BKN013 OVC024 M06/M08 A3018 RMK AO2 |
| 02:32 MST |  Overcast | -5°C / 23°F | -7°C / 19°F | 86% | 1022 mb (30.18 in) | NNW 17 kph (NNW 10.4 mph) | - | 10SM |
| | KLRU 040932Z AUTO 34009KT 10SM OVC013 M05/M07 A3017 RMK AO2 |
| 02:12 MST |  Overcast | -4°C / 25°F | -7°C / 19°F | 80% | 1022 mb (30.18 in) | N 17 kph (N 10.4 mph) | - | 10SM |
| | KLRU 040912Z AUTO 35009KT 10SM OVC013 M04/M07 A3017 RMK AO2 |
| 01:52 MST |  Overcast | -4°C / 25°F | -7°C / 19°F | 80% | 1021 mb (30.15 in) | NNW 13 kph (NNW 8.1 mph) | - | 10SM |
| | KLRU 040852Z AUTO 34007KT 10SM OVC013 M04/M07 A3016 RMK AO2 |
| 01:32 MST |  Overcast | -4°C / 25°F | -6°C / 21°F | 86% | 1021 mb (30.15 in) | N 13 kph (N 8.1 mph) | - | 10SM |
| | KLRU 040832Z AUTO 35007KT 10SM OVC013 M04/M06 A3016 RMK AO2 |
| 01:12 MST |  Overcast Light Snow | -4°C / 25°F | -5°C / 23°F | 93% | 1021 mb (30.15 in) | N 6 kph (N 3.5 mph) | - | 7SM |
| | KLRU 040812Z AUTO 35003KT 7SM -SN OVC011 M04/M05 A3015 RMK AO2 |
| 00:52 MST |  Overcast Light Snow | -3°C / 27°F | -4°C / 25°F | 93% | 1021 mb (30.15 in) | NW 7 kph (NW 4.6 mph) | 0.51 mm (0.02 in) | 7SM |
| | KLRU 040752Z AUTO 32004KT 7SM -SN OVC009 M03/M04 A3014 RMK AO2 P0002 |
| 00:32 MST |  Overcast Light Snow | -2°C / 28°F | -3°C / 27°F | 93% | 1020 mb (30.12 in) | NNE 6 kph (NNE 3.5 mph) | 0.51 mm (0.02 in) | 2 1/2SM |
| | KLRU 040732Z AUTO 02003KT 2 1/2SM -SN OVC004 M02/M03 A3013 RMK AO2 P0002 |
| 00:12 MST |  Overcast Snow | -3°C / 27°F | -3°C / 27°F | 100% | 1020 mb (30.12 in) | Calm | 0.25 mm (0.01 in) | 1SM |
| | KLRU 040712Z AUTO 00000KT 1SM SN OVC006 M03/M03 A3013 RMK AO2 P0001 |