| 01:40 MST |  Partly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 56 kph (NNW 34.5 mph) | - | 1 1/4SM |
| | KRCA 250840Z AUTO 34030G38KT 1 1/4SM BR FEW010 SCT060 RMK AO2 PK WND 34039/0810 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 01:36 MST |  Partly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 56 kph (NNW 34.5 mph) | - | 1 1/2SM |
| | KRCA 250836Z AUTO 34030G38KT 1 1/2SM BR FEW010 SCT060 RMK AO2 PK WND 34039/0810 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 01:31 MST |  Partly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 50 kph (NNW 31.1 mph) | - | 1 3/4SM |
| | KRCA 250831Z AUTO 34027G38KT 1 3/4SM BR FEW010 SCT060 RMK AO2 PK WND 34039/0810 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 01:25 MST |  Partly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 52 kph (NNW 32.2 mph) | - | 1 1/2SM |
| | KRCA 250825Z AUTO 34028G37KT 1 1/2SM BR SCT060 RMK AO2 PK WND 34039/0810 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 01:19 MST |  Mostly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 54 kph (NNW 33.4 mph) | - | 1SM |
| | KRCA 250819Z AUTO 34029G39KT 1SM BR BKN060 RMK AO2 PK WND 34039/0810 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 01:06 MST |  Overcast Fog And Mist | N/A | N/A | N/A | N/A | NNW 56 kph (NNW 34.5 mph) | - | 1SM |
| | KRCA 250806Z AUTO 34030G38KT 1SM BR OVC060 RMK AO2 PK WND 35038/0805 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 01:02 MST |  Overcast Fog And Mist | N/A | N/A | N/A | N/A | NNW 56 kph (NNW 34.5 mph) | - | 1 1/4SM |
| | KRCA 250802Z AUTO 34030G38KT 1 1/4SM BR OVC060 RMK AO2 PK WND 34038/0801 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 00:59 MST |  Overcast Fog And Mist | N/A | N/A | N/A | N/A | NNW 54 kph (NNW 33.4 mph) | - | 1 1/2SM |
| | KRCA 250759Z AUTO 34029G38KT 1 1/2SM BR OVC060 RMK AO2 PK WND 34034/0756 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 00:56 MST |  Overcast Fog And Mist | N/A | N/A | N/A | N/A | NNW 54 kph (NNW 33.4 mph) | - | 1 3/4SM |
| | KRCA 250756Z AUTO 34029G38KT 1 3/4SM BR OVC060 RMK AO2 PK WND 34033/0755 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 00:55 MST |  Overcast Fog And Mist | N/A | N/A | N/A | N/A | NNW 52 kph (NNW 32.2 mph) | - | 2SM |
| | KRCA 250755Z AUTO 34028G38KT 2SM BR OVC060 RMK AO2 PK WND 34039/0722 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 00:44 MST |  Mostly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 52 kph (NNW 32.2 mph) | - | 2SM |
| | KRCA 250744Z AUTO 34028G38KT 2SM BR BKN055 RMK AO2 PK WND 34039/0722 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 00:36 MST |  Mostly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 56 kph (NNW 34.5 mph) | - | 1 3/4SM |
| | KRCA 250736Z AUTO 34030G38KT 1 3/4SM BR BKN055 RMK AO2 PK WND 34039/0722 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 00:29 MST |  Mostly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 52 kph (NNW 32.2 mph) | - | 2SM |
| | KRCA 250729Z AUTO 34028G39KT 2SM BR BKN050 RMK AO2 PK WND 34039/0722 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 00:27 MST |  Partly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 54 kph (NNW 33.4 mph) | - | 1 3/4SM |
| | KRCA 250727Z AUTO 34029G39KT 1 3/4SM BR SCT050 RMK AO2 PK WND 34039/0722 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 00:25 MST |  Partly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 57 kph (NNW 35.7 mph) | - | 1 1/2SM |
| | KRCA 250725Z AUTO 34031G39KT 1 1/2SM BR SCT049 RMK AO2 PK WND 34039/0722 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 00:23 MST |  Partly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 56 kph (NNW 34.5 mph) | - | 1 3/4SM |
| | KRCA 250723Z AUTO 34030G39KT 1 3/4SM BR SCT049 RMK AO2 PK WND 34039/0722 VIS 1V5 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 00:17 MST |  Mostly Cloudy Fog And Mist | N/A | N/A | N/A | N/A | NNW 56 kph (NNW 34.5 mph) | - | 2 1/2SM |
| | KRCA 250717Z AUTO 34030G35KT 2 1/2SM BR BKN047 RMK AO2 PK WND 35036/0704 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |
| 00:01 MST |  Overcast Fog And Mist | N/A | N/A | N/A | N/A | NNW 56 kph (NNW 34.5 mph) | - | 3SM |
| | KRCA 250701Z AUTO 34030G36KT 3SM BR OVC047 RMK AO2 PK WND 35036/0700 VIS 2V4 SLPNO RVRNO PWINO PNO FZRANO TSNO VISNO RWY31 CHINO RWY31 $ |