| 05:16 MST |  Overcast Light Snow | -16°C / 3°F | -18°C / 0°F | 85% | 1022 mb (30.18 in) | NNW 7 kph (NNW 4.6 mph) | - | 5SM |
| | KRCA 071216Z 33004KT 5SM R13/4500V5000FT -SN BR OVC018 M16/M18 A3018 RMK AO2A CIG 007 RWY31 SLP296 |
| 05:14 MST |  Overcast Light Snow | -16°C / 3°F | -18°C / 0°F | 85% | 1022 mb (30.18 in) | NNW 7 kph (NNW 4.6 mph) | - | 5SM |
| | KRCA 071214Z 33004KT 5SM R13/4500FT -SN BR OVC019 M16/M18 A3018 RMK AO2A CIG 009 RWY31 SLP296 |
| 05:00 MST |  Mostly Cloudy Light Snow | -16°C / 3°F | -19°C / -2°F | 78% | 1022 mb (30.18 in) | NW 9 kph (NW 5.8 mph) | - | 7SM |
| | KRCA 071200Z 31005KT 7SM R13/5000V5500FT -SN BKN020 M16/M19 A3018 RMK AO2A BKN V SCT SLP298 |
| 04:55 MST |  Partly Cloudy Light Snow | -16°C / 3°F | -19°C / -2°F | 78% | 1022 mb (30.18 in) | WNW 9 kph (WNW 5.8 mph) | 0.00 mm (0.00 in) | 9SM |
| | KRCA 071155Z 29005KT 9SM R13/5000VP6000FT -SN SCT020 M16/M19 A3018 RMK AO2A SNB1150 SLP299 P0000 60000 T11651187 11141 21179 55000 |
| 04:50 MST |  Partly Cloudy Light Snow | -16°C / 3°F | -19°C / -2°F | 78% | 1022 mb (30.18 in) | W 9 kph (W 5.8 mph) | - | 10SM |
| | KRCA 071150Z 27005KT 10SM -SN FEW021 M16/M19 A3018 RMK AO2A SNB1150 SLP296 |
| 04:15 MST |  Partly Cloudy Fog And Mist | -16°C / 3°F | -18°C / 0°F | 85% | 1022 mb (30.18 in) | N 13 kph (N 8.1 mph) | - | 3SM |
| | KRCA 071115Z 35007KT 3SM R13/2600VP6000FT BR FEW090 M16/M18 A3018 RMK AO2A SLP297 |
| 04:14 MST |  Partly Cloudy Fog And Mist | -17°C / 1°F | -18°C / 0°F | 92% | 1022 mb (30.18 in) | N 13 kph (N 8.1 mph) | - | 3SM |
| | KRCA 071114Z 35007KT 3SM R13/2600V5500FT BR FEW090 M17/M18 A3018 RMK AO2A SLP297 |
| 03:55 MST |  Clear | -18°C / 0°F | -20°C / -4°F | 84% | 1022 mb (30.18 in) | NW 9 kph (NW 5.8 mph) | - | 10SM |
| | KRCA 071055Z 32005KT 10SM CLR M18/M20 A3018 RMK AO2A SLP298 T11771200 |
| 03:25 MST |  Clear Fog And Mist | -16°C / 3°F | -18°C / 0°F | 85% | 1022 mb (30.18 in) | N 6 kph (N 3.5 mph) | - | 5SM |
| | KRCA 071025Z 35003KT 5SM R13/4000VP6000FT BR CLR M16/M18 A3017 RMK AO2A SLP291 |
| 03:19 MST |  Clear Fog And Mist | -16°C / 3°F | -18°C / 0°F | 85% | 1022 mb (30.18 in) | N 7 kph (N 4.6 mph) | - | 4SM |
| | KRCA 071019Z 35004KT 4SM R13/3500V5500FT BR CLR M16/M18 A3017 RMK AO2A SLP292 |
| 03:04 MST |  Clear Hazy | -16°C / 3°F | -18°C / 0°F | 85% | 1022 mb (30.18 in) | N 11 kph (N 6.9 mph) | - | 6SM |
| | KRCA 071004Z 36006KT 6SM R13/4500VP6000FT HZ CLR M16/M18 A3017 RMK AO2A SLP291 |
| 02:55 MST |  Clear | -15°C / 5°F | -18°C / 0°F | 78% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | 0.00 mm (0.00 in) | 7SM |
| | KRCA 070955Z 36008KT 7SM R13/5000V5500FT CLR M15/M18 A3017 RMK AO2A UPE0920SNB0920E0928 SLP291 P0000 T11531176 |
| 02:29 MST |  Clear | -15°C / 5°F | -17°C / 1°F | 85% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | - | 7SM |
| | KRCA 070929Z 36008KT 7SM R13/5000VP6000FT CLR M15/M17 A3017 RMK AO2A UPE0920SNB0920E0928 SLP289 |
| 02:28 MST |  Clear | -15°C / 5°F | -17°C / 1°F | 85% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | - | 7SM |
| | KRCA 070928Z 36008KT 7SM R13/5000V5500FT CLR M15/M17 A3017 RMK AO2A UPE0920SNB0920E0928 SLP289 |
| 02:19 MST |  Clear Unknown Precip | -15°C / 5°F | -17°C / 1°F | 85% | 1022 mb (30.18 in) | N 13 kph (N 8.1 mph) | - | 8SM |
| | KRCA 070919Z 36007KT 8SM R13/5500FT UP CLR M15/M17 A3017 RMK AO2A SLP290 |
| 02:07 MST |  Clear Unknown Precip | -15°C / 5°F | -17°C / 1°F | 85% | 1022 mb (30.18 in) | N 13 kph (N 8.1 mph) | - | 10SM |
| | KRCA 070907Z 36007KT 10SM UP CLR M15/M17 A3018 RMK AO2A SLP292 |
| 02:05 MST |  Clear | -15°C / 5°F | -17°C / 1°F | 85% | 1022 mb (30.18 in) | N 13 kph (N 8.1 mph) | - | 10SM |
| | KRCA 070905Z 36007KT 10SM CLR M15/M17 A3018 RMK AO2A UPE0905 SLP293 |
| 01:55 MST |  Partly Cloudy Unknown Precip | -15°C / 5°F | -17°C / 1°F | 85% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | 0.00 mm (0.00 in) | 9SM |
| | KRCA 070855Z 35008KT 9SM R13/5500VP6000FT UP FEW010 M15/M17 A3018 RMK AO2A UPB0805DZE0759 SLP293 P0000 60000 T11461170 56008 |
| 01:47 MST |  Partly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | - | 7SM |
| | KRCA 070847Z 36008KT 7SM R13/4500VP6000FT UP FEW011 M14/M17 A3018 RMK AO2A UPB0805DZE0759 SLP293 |
| 01:37 MST |  Partly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 17 kph (N 10.4 mph) | - | 4SM |
| | KRCA 070837Z 35009KT 4SM R13/4000V5000FT UP SCT012 M14/M17 A3018 RMK AO2A UPB0805DZE0759 SLP292 |
| 01:31 MST |  Mostly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 17 kph (N 10.4 mph) | - | 6SM |
| | KRCA 070831Z 35009KT 6SM R13/4500V5000FT UP BKN014 M14/M17 A3018 RMK AO2A UPB0805DZE0759 SLP293 |
| 01:23 MST |  Mostly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 17 kph (N 10.4 mph) | - | 3SM |
| | KRCA 070823Z 35009KT 3SM R13/3500V5000FT UP BKN017 M14/M17 A3018 RMK AO2A UPB0805DZE0759 SLP293 |
| 01:20 MST |  Mostly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | - | 2 1/2SM |
| | KRCA 070820Z 35008KT 2 1/2SM R13/3500V4000FT UP BKN017 M14/M17 A3019 RMK AO2A UPB0805DZE0759 SLP294 |
| 01:10 MST |  Mostly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | NNW 15 kph (NNW 9.2 mph) | - | 4SM |
| | KRCA 070810Z 34008KT 4SM R13/4000V4500FT UP BKN022 M14/M17 A3019 RMK AO2A UPB0805DZE0759 CIG 016 RWY31 SLP295 |
| 01:08 MST |  Mostly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | NNW 15 kph (NNW 9.2 mph) | - | 4SM |
| | KRCA 070808Z 34008KT 4SM R13/4000V5000FT UP BKN023 M14/M17 A3019 RMK AO2A UPB0805DZE0759 CIG 015 RWY31 SLP295 |
| 01:07 MST |  Mostly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | NNW 15 kph (NNW 9.2 mph) | - | 4SM |
| | KRCA 070807Z 34008KT 4SM R13/4000VP6000FT UP BKN024 M14/M17 A3019 RMK AO2A UPB0805DZE0759 CIG 015 RWY31 SLP295 |
| 01:05 MST |  Partly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | NNW 15 kph (NNW 9.2 mph) | - | 5SM |
| | KRCA 070805Z 34008KT 5SM R13/4000VP6000FT UP SCT025 M14/M17 A3019 RMK AO2A UPB0805DZE0759 SCT V BKN SLP295 |
| 00:59 MST |  Partly Cloudy | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | - | 9SM |
| | KRCA 070759Z 35008KT 9SM R13/5000VP6000FT SCT022 M14/M17 A3019 RMK AO2A DZE0759 CLDS LWR RWY31 SLP295 |
| 00:55 MST |  Partly Cloudy Drizzle | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | 0.00 mm (0.00 in) | 9SM |
| | KRCA 070755Z 35008KT 9SM R13/5000VP6000FT -DZ FEW013 M14/M17 A3019 RMK AO2A UPE0751DZB0751 CLDS LWR RWY31 SLP295 P0000 T11431166 |
| 00:50 MST |  Partly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | - | 6SM |
| | KRCA 070750Z 35008KT 6SM R13/4500VP6000FT UP SCT009 M14/M17 A3019 RMK AO2A SLP295 |
| 00:43 MST |  Partly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | - | 4SM |
| | KRCA 070743Z 35008KT 4SM R13/4000V5000FT UP SCT009 M14/M17 A3019 RMK AO2A SLP295 |
| 00:39 MST |  Partly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | - | 4SM |
| | KRCA 070739Z 35008KT 4SM R13/4000V4500FT UP SCT009 M14/M17 A3019 RMK AO2A SLP296 |
| 00:38 MST |  Partly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 15 kph (N 9.2 mph) | - | 4SM |
| | KRCA 070738Z 35008KT 4SM R13/4000V5000FT UP SCT009 M14/M17 A3019 RMK AO2A SLP296 |
| 00:34 MST |  Mostly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 13 kph (N 8.1 mph) | - | 5SM |
| | KRCA 070734Z 35007KT 5SM R13/4000V5500FT UP BKN009 M14/M17 A3019 RMK AO2A SLP297 |
| 00:30 MST |  Mostly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | NNW 13 kph (NNW 8.1 mph) | - | 8SM |
| | KRCA 070730Z 34007KT 8SM R13/4500VP6000FT UP BKN009 M14/M17 A3019 RMK AO2A SLP297 |
| 00:25 MST |  Mostly Cloudy | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | NNW 13 kph (NNW 8.1 mph) | - | 10SM |
| | KRCA 070725Z 34007KT 10SM R13/5500VP6000FT BKN008 M14/M17 A3019 RMK AO2A UPE0724 SLP297 |
| 00:24 MST |  Partly Cloudy | -14°C / 7°F | -17°C / 1°F | 78% | 1023 mb (30.21 in) | NNW 13 kph (NNW 8.1 mph) | - | 9SM |
| | KRCA 070724Z 34007KT 9SM R13/5000VP6000FT SCT008 M14/M17 A3020 RMK AO2A UPE0724 SCT V BKN SLP297 |
| 00:17 MST |  Partly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 13 kph (N 8.1 mph) | - | 6SM |
| | KRCA 070717Z 35007KT 6SM R13/4500VP6000FT UP HZ SCT007 M14/M17 A3019 RMK AO2A SLP297 |
| 00:16 MST |  Partly Cloudy Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1022 mb (30.18 in) | N 13 kph (N 8.1 mph) | - | 6SM |
| | KRCA 070716Z 35007KT 6SM R13/4500V5500FT UP HZ SCT008 M14/M17 A3019 RMK AO2A SLP297 |
| 00:04 MST |  Overcast Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1023 mb (30.21 in) | N 13 kph (N 8.1 mph) | - | 5SM |
| | KRCA 070704Z 35007KT 5SM R13/4500V5000FT UP OVC009 M14/M17 A3020 RMK AO2A SLP298 |
| 00:02 MST |  Overcast Unknown Precip | -14°C / 7°F | -17°C / 1°F | 78% | 1023 mb (30.21 in) | N 13 kph (N 8.1 mph) | - | 5SM |
| | KRCA 070702Z 35007KT 5SM R13/4500V5000FT UP OVC010 M14/M17 A3020 RMK AO2A SLP298 |