| 18:55 MST |  Clear | N/A | N/A | N/A | N/A | N 28 kph (N 17.3 mph) | - | 10SM |
| | KRCA 250155Z AUTO 36015KT 10SM CLR RMK AO2 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 17:55 MST |  Partly Cloudy | N/A | N/A | N/A | N/A | N 33 kph (N 20.7 mph) | - | 8SM |
| | KRCA 250055Z AUTO 36018KT 8SM SCT011 RMK AO2 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 17:48 MST |  Partly Cloudy | N/A | N/A | N/A | N/A | N 35 kph (N 21.9 mph) | - | 8SM |
| | KRCA 250048Z AUTO 36019KT 8SM SCT011 RMK AO2 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 17:33 MST |  Mostly Cloudy | N/A | N/A | N/A | N/A | N 30 kph (N 18.4 mph) | - | 10SM |
| | KRCA 250033Z AUTO 36016KT 10SM BKN011 RMK AO2 BKN V SCT SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 17:29 MST |  Partly Cloudy | N/A | N/A | N/A | N/A | N 30 kph (N 18.4 mph) | - | 10SM |
| | KRCA 250029Z AUTO 01016KT 10SM SCT012 RMK AO2 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 17:15 MST |  Mostly Cloudy | N/A | N/A | N/A | N/A | N 22 kph (N 13.8 mph) | - | 10SM |
| | KRCA 250015Z AUTO 01012KT 10SM BKN010 RMK AO2 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 17:11 MST |  Partly Cloudy | N/A | N/A | N/A | N/A | N 20 kph (N 12.7 mph) | - | 10SM |
| | KRCA 250011Z AUTO 01011KT 10SM SCT010 RMK AO2 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 16:55 MST |  Overcast | N/A | N/A | N/A | N/A | N 22 kph (N 13.8 mph) | - | 8SM |
| | KRCA 242355Z AUTO 36012KT 8SM OVC013 RMK AO2 SNE2308B2316 SNEMM SLPNO 11125 21156 RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 16:54 MST |  Overcast | N/A | N/A | N/A | N/A | N 22 kph (N 13.8 mph) | - | 8SM |
| | KRCA 242354Z AUTO 36012KT 8SM OVC014 RMK AO2 SNE2308B2316 SNEMM SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 15:55 MST |  Overcast Light Snow | -15°C / 5°F | -18°C / 0°F | 78% | 1016 mb (30 in) | N 19 kph (N 11.5 mph) | 0.00 mm (0.00 in) | 3SM |
| | KRCA 242255Z AUTO 36010KT 3SM -SN OVC022 M15/M18 A3001 RMK AO2 UPB2212E2213B2245E2252SNB2213E2223B2224E2245B2252 CIG 016 RWY31 SLP237 P0000 T11551183 FZRANO $ |
| 15:24 MST |  Overcast Light Snow | -15°C / 5°F | -18°C / 0°F | 78% | 1017 mb (30.03 in) | N 19 kph (N 11.5 mph) | - | 6SM |
| | KRCA 242224Z AUTO 01010KT 6SM -SN OVC015 M15/M18 A3002 RMK AO2 UPB2212E2213SNB2213E2223B2224 SLP241 FZRANO $ |
| 15:23 MST |  Overcast | -15°C / 5°F | -18°C / 0°F | 78% | 1017 mb (30.03 in) | N 20 kph (N 12.7 mph) | - | 7SM |
| | KRCA 242223Z AUTO 01011KT 7SM OVC015 M15/M18 A3002 RMK AO2 UPB2212E2213SNB2213E2223 SLP241 FZRANO $ |
| 15:22 MST |  Overcast Light Snow | -15°C / 5°F | -18°C / 0°F | 78% | 1017 mb (30.03 in) | N 19 kph (N 11.5 mph) | - | 7SM |
| | KRCA 242222Z AUTO 01010KT 7SM -SN OVC015 M15/M18 A3002 RMK AO2 UPB2212E2213SNB2213 SLP238 FZRANO $ |
| 15:12 MST |  Overcast Unknown Precip | -15°C / 5°F | -18°C / 0°F | 78% | 1017 mb (30.03 in) | NNE 22 kph (NNE 13.8 mph) | - | 10SM |
| | KRCA 242212Z AUTO 02012KT 10SM UP OVC011 M15/M18 A3002 RMK AO2 UPB2212 SLP240 FZRANO $ |
| 14:55 MST |  Overcast | -14°C / 7°F | -18°C / 0°F | 72% | 1017 mb (30.03 in) | NE 19 kph (NE 11.5 mph) | 0.00 mm (0.00 in) | 10SM |
| | KRCA 242155Z AUTO 03010KT 10SM OVC011 M14/M18 A3003 RMK AO2 UPB2118E2119B2146E2147SNB2119E2140DZB2140E2146 SLP241 P0000 T11401179 FZRANO $ |
| 14:47 MST |  Overcast | -14°C / 7°F | -18°C / 0°F | 72% | 1017 mb (30.03 in) | NNE 19 kph (NNE 11.5 mph) | - | 10SM |
| | KRCA 242147Z AUTO 02010KT 10SM OVC010 M14/M18 A3002 RMK AO2 UPB2118E2119B2146E2147SNB2119E2140DZB2140E2146 SLP240 FZRANO $ |
| 14:18 MST |  Mostly Cloudy Unknown Precip | -13°C / 9°F | -17°C / 1°F | 72% | 1017 mb (30.03 in) | N 19 kph (N 11.5 mph) | - | 10SM |
| | KRCA 242118Z AUTO 36010KT 10SM UP BKN011 M13/M17 A3002 RMK AO2 UPB2118 BKN V SCT SLP240 |
| 13:55 MST |  Clear | -13°C / 9°F | -17°C / 1°F | 72% | 1017 mb (30.03 in) | NNW 17 kph (NNW 10.4 mph) | - | 10SM |
| | KRCA 242055Z AUTO 34009KT 10SM CLR M13/M17 A3003 RMK AO2 SLP243 T11351174 56015 |
| 12:55 MST |  Clear | -13°C / 9°F | -18°C / 0°F | 66% | 1018 mb (30.06 in) | N 20 kph (N 12.7 mph) | - | 10SM |
| | KRCA 241955Z AUTO 36011KT 10SM CLR M13/M18 A3005 RMK AO2 SLP250 T11311178 |
| 11:55 MST |  Clear | -13°C / 9°F | -18°C / 0°F | 66% | 1018 mb (30.06 in) | N 20 kph (N 12.7 mph) | - | 10SM |
| | KRCA 241855Z AUTO 36011KT 10SM CLR M13/M18 A3006 RMK AO2 SLP252 T11281177 |
| 10:55 MST |  Clear | -13°C / 9°F | -18°C / 0°F | 66% | 1019 mb (30.09 in) | N 15 kph (N 9.2 mph) | - | 10SM |
| | KRCA 241755Z AUTO 36008KT 10SM CLR M13/M18 A3008 RMK AO2 SLP260 T11351183 11131 21174 58014 |
| 09:55 MST |  Clear | -14°C / 7°F | -19°C / -2°F | 66% | 1020 mb (30.12 in) | NE 9 kph (NE 5.8 mph) | - | 10SM |
| | KRCA 241655Z AUTO 05005KT 10SM CLR M14/M19 A3011 RMK AO2 SLP270 T11431187 |
| 08:55 MST |  Clear | -15°C / 5°F | -20°C / -4°F | 66% | 1020 mb (30.12 in) | Calm | - | 10SM |
| | KRCA 241555Z AUTO 00000KT 10SM CLR M15/M20 A3013 RMK AO2 SLP278 T11551200 |
| 07:55 MST |  Clear | -17°C / 1°F | -21°C / -6°F | 71% | 1020 mb (30.12 in) | NNW 11 kph (NNW 6.9 mph) | - | 10SM |
| | KRCA 241455Z AUTO 33006KT 10SM CLR M17/M21 A3013 RMK AO2 SLP277 T11691208 56002 |
| 06:55 MST |  Clear | -16°C / 3°F | -20°C / -4°F | 72% | 1020 mb (30.12 in) | NNW 19 kph (NNW 11.5 mph) | - | 10SM |
| | KRCA 241355Z AUTO 34010KT 10SM CLR M16/M20 A3013 RMK AO2 SLP278 T11581199 |
| 05:55 MST |  Clear | -15°C / 5°F | -19°C / -2°F | 72% | 1020 mb (30.12 in) | N 20 kph (N 12.7 mph) | - | 10SM |
| | KRCA 241255Z AUTO 35011KT 10SM CLR M15/M19 A3013 RMK AO2 SLP273 T11511192 |
| 04:55 MST |  Clear | -15°C / 5°F | -19°C / -2°F | 72% | 1020 mb (30.12 in) | N 30 kph (N 18.4 mph) | - | 10SM |
| | KRCA 241155Z AUTO 35016KT 10SM CLR M15/M19 A3013 RMK AO2 SLP276 60000 T11471190 11142 21154 55001 |
| 03:55 MST |  Clear | -14°C / 7°F | -19°C / -2°F | 66% | 1020 mb (30.12 in) | N 37 kph (N 23 mph) | 0.00 mm (0.00 in) | 10SM |
| | KRCA 241055Z AUTO 35020KT 10SM CLR M14/M19 A3013 RMK AO2 PK WND 35036/0957 SNB1001E1011 SLP272 P0000 T11441187 |
| 03:11 MST |  Clear | -14°C / 7°F | -19°C / -2°F | 66% | 1021 mb (30.15 in) | N 44 kph (N 27.6 mph) | - | 10SM |
| | KRCA 241011Z AUTO 35024G31KT 10SM CLR M14/M19 A3014 RMK AO2 PK WND 35036/0957 SNB1001E1011 SLP274 |
| 03:01 MST |  Clear Light Snow | -14°C / 7°F | -19°C / -2°F | 66% | 1021 mb (30.15 in) | N 50 kph (N 31.1 mph) | - | 10SM |
| | KRCA 241001Z AUTO 35027G36KT 10SM -SN CLR M14/M19 A3014 RMK AO2 PK WND 35036/0957 SNB1001 SLP271 |
| 02:55 MST |  Clear | -14°C / 7°F | -18°C / 0°F | 72% | 1021 mb (30.15 in) | N 48 kph (N 29.9 mph) | 0.00 mm (0.00 in) | 10SM |
| | KRCA 240955Z AUTO 35026G31KT 10SM CLR M14/M18 A3014 RMK AO2 PK WND 35032/0936 UPB0900E0901DZE0900 SLP271 P0000 T11421184 |
| 02:01 MST |  Clear | -14°C / 7°F | -18°C / 0°F | 72% | 1021 mb (30.15 in) | N 43 kph (N 26.5 mph) | - | 10SM |
| | KRCA 240901Z AUTO 35023G30KT 10SM CLR M14/M18 A3014 RMK AO2 PK WND 34030/0857 UPB0900E0901DZE0900 SLP271 |
| 01:55 MST |  Clear Drizzle | -14°C / 7°F | -18°C / 0°F | 72% | 1021 mb (30.15 in) | NNW 44 kph (NNW 27.6 mph) | 0.00 mm (0.00 in) | 10SM |
| | KRCA 240855Z AUTO 34024G30KT 10SM -DZ CLR M14/M18 A3014 RMK AO2 PK WND 34034/0843 UPB0804E0805B0833E0837SNB0805E0809B0812E0815B0819E0822B0852E0853DZB0809 SLP271 P0000 60000 T11441184 51007 |
| 01:36 MST |  Clear Unknown Precip | -15°C / 5°F | -18°C / 0°F | 78% | 1020 mb (30.12 in) | NNW 44 kph (NNW 27.6 mph) | - | 10SM |
| | KRCA 240836Z AUTO 34024G29KT 10SM UP CLR M15/M18 A3013 RMK AO2 PK WND 34029/0835 UPB0804E0805B0833SNB0805E0809B0812E0815B0819E0822DZB0809E0833 SLP266 |
| 01:34 MST |  Clear | -15°C / 5°F | -18°C / 0°F | 78% | 1020 mb (30.12 in) | NNW 44 kph (NNW 27.6 mph) | - | 10SM |
| | KRCA 240834Z AUTO 34024G29KT 10SM CLR M15/M18 A3013 RMK AO2 PK WND 34029/0831 UPB0804E0805B0833E0834SNB0805E0809B0812E0815B0819E0822DZB0809E0833 SLP266 |
| 01:04 MST |  Clear Unknown Precip | -15°C / 5°F | -19°C / -2°F | 72% | 1020 mb (30.12 in) | NNW 39 kph (NNW 24.2 mph) | - | 10SM |
| | KRCA 240804Z AUTO 34021G29KT 10SM UP CLR M15/M19 A3013 RMK AO2 PK WND 34029/0800 UPB0804 SLP266 |
| 00:55 MST |  Clear | -15°C / 5°F | -19°C / -2°F | 72% | 1020 mb (30.12 in) | NNW 43 kph (NNW 26.5 mph) | 0.00 mm (0.00 in) | 10SM |
| | KRCA 240755Z AUTO 34023G28KT 10SM CLR M15/M19 A3013 RMK AO2 PK WND 35034/0706 UPB0723E0727DZB0710E0733 SLP266 P0000 T11521186 |
| 00:33 MST |  Clear | -15°C / 5°F | -19°C / -2°F | 72% | 1020 mb (30.12 in) | NNW 41 kph (NNW 25.3 mph) | - | 10SM |
| | KRCA 240733Z AUTO 34022KT 10SM CLR M15/M19 A3012 RMK AO2 PK WND 35034/0706 UPB0723E0727DZB0710E0733 SLP263 |
| 00:23 MST |  Clear Unknown Precip | -15°C / 5°F | -18°C / 0°F | 78% | 1020 mb (30.12 in) | N 43 kph (N 26.5 mph) | - | 10SM |
| | KRCA 240723Z AUTO 35023G29KT 10SM UP CLR M15/M18 A3012 RMK AO2 PK WND 35034/0706 UPB0723DZB0710E0719 SLP262 |
| 00:19 MST |  Clear | -15°C / 5°F | -18°C / 0°F | 78% | 1020 mb (30.12 in) | N 44 kph (N 27.6 mph) | - | 10SM |
| | KRCA 240719Z AUTO 35024G29KT 10SM CLR M15/M18 A3012 RMK AO2 PK WND 35034/0706 DZB0710E0719 SLP263 |
| 00:10 MST |  Clear Drizzle | -15°C / 5°F | -18°C / 0°F | 78% | 1020 mb (30.12 in) | N 48 kph (N 29.9 mph) | - | 10SM |
| | KRCA 240710Z AUTO 35026G34KT 10SM -DZ CLR M15/M18 A3013 RMK AO2 PK WND 35034/0706 DZB0710 SLP264 |