| 06:53 MST | 
Overcast | -1°C / 30°F | -2°C / 28°F | 93% | 1018 mb
(30.06 in) | W 17 kph
(W 10.4 mph) | - | 10SM |
| | KBYI 281353Z AUTO 27009KT 10SM BKN007 OVC018 M01/M02 A3005
RMK AO2 SLP191 T10061017 |
| 06:21 MST |
Overcast | -1°C / 30°F | -2°C / 28°F | 93% | 1017 mb
(30.03 in) | W 11 kph
(W 6.9 mph) | - | 10SM |
| | KBYI 281321Z AUTO 28006G16KT 10SM OVC007 M01/M02 A3004
RMK AO2 |
| 05:53 MST |
Overcast | 0°C / 32°F | -1°C / 30°F | 93% | 1017 mb
(30.03 in) | WNW 15 kph
(WNW 9.2 mph) | - | 10SM |
| | KBYI 281253Z AUTO 29008KT 10SM OVC005 00/M01 A3003
RMK AO2 CIG 003V007 SLP182 T00001011 |
| 05:00 MST | 
Overcast
Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1017 mb
(30.03 in) | W 15 kph
(W 9.2 mph) | - | 3SM |
| | KBYI 281200Z AUTO 27008KT 3SM BR OVC001 00/00 A3002
RMK AO2 |
| 04:53 MST |
Overcast
Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1017 mb
(30.03 in) | W 15 kph
(W 9.2 mph) | - | 1 3/4SM |
| | KBYI 281153Z AUTO 27008KT 1 3/4SM BR OVC001 00/00 A3002
RMK AO2 SLP176 T00000000 10028 20000 50004 |
| 04:48 MST |
Overcast
Fog And Mist | 0°C / 32°F | 0°C / 32°F | 100% | 1017 mb
(30.03 in) | W 13 kph
(W 8.1 mph) | - | 1 1/4SM |
| | KBYI 281148Z AUTO 27007KT 1 1/4SM BR OVC001 00/00 A3002
RMK AO2 |
| 04:09 MST |
Overcast
Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1016 mb
(30 in) | W 13 kph
(W 8.1 mph) | - | 3/4SM |
| | KBYI 281109Z AUTO 27007KT 3/4SM BR OVC001 01/00 A3001
RMK AO2 |
| 03:53 MST |
Overcast
Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1016 mb
(30 in) | W 11 kph
(W 6.9 mph) | - | 1 1/4SM |
| | KBYI 281053Z AUTO 27006KT 1 1/4SM BR OVC001 01/01 A3000
RMK AO2 SLP170 T00060006 |
| 03:49 MST |
Overcast
Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1016 mb
(30 in) | SSW 13 kph
(SSW 8.1 mph) | - | 1SM |
| | KBYI 281049Z AUTO 26007KT 1SM BR OVC001 01/00 A3000
RMK AO2 |
| 03:12 MST |
Obscured
Fog | 1°C / 34°F | 0°C / 32°F | 93% | 1016 mb
(30 in) | W 17 kph
(W 10.4 mph) | - | 1/2SM |
| | KBYI 281012Z AUTO 28009KT 1/2SM FG VV001 01/00 A3000
RMK AO2 |
| 03:05 MST |
Overcast
Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1016 mb
(30 in) | W 17 kph
(W 10.4 mph) | - | 1SM |
| | KBYI 281005Z AUTO 27009KT 1SM BR OVC001 01/01 A3000
RMK AO2 |
| 02:53 MST |
Overcast
Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1016 mb
(30 in) | W 13 kph
(W 8.1 mph) | - | 1 1/2SM |
| | KBYI 280953Z AUTO 27007KT 1 1/2SM BR OVC001 01/01 A3000
RMK AO2 SLP163 T00060006 |
| 02:51 MST |
Overcast
Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1016 mb
(30 in) | SSW 13 kph
(SSW 8.1 mph) | - | 1 1/2SM |
| | KBYI 280951Z AUTO 26007KT 1 1/2SM BR OVC001 01/01 A3000
RMK AO2 |
| 02:43 MST |
Overcast
Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1016 mb
(30 in) | W 15 kph
(W 9.2 mph) | - | 1 1/4SM |
| | KBYI 280943Z AUTO 27008KT 1 1/4SM BR OVC001 01/01 A3000
RMK AO2 |
| 02:09 MST |
Overcast
Fog | 1°C / 34°F | 1°C / 34°F | 100% | 1016 mb
(30 in) | SSW 19 kph
(SSW 11.5 mph) | - | 1/2SM |
| | KBYI 280909Z AUTO 26010KT 1/2SM FG OVC002 01/01 A2999
RMK AO2 |
| 01:58 MST |
Overcast
Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1016 mb
(30 in) | SSW 17 kph
(SSW 10.4 mph) | - | 1 1/4SM |
| | KBYI 280858Z AUTO 26009KT 1 1/4SM BR OVC002 01/00 A2999
RMK AO2 |
| 01:53 MST |
Overcast
Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1016 mb
(30 in) | SSW 13 kph
(SSW 8.1 mph) | - | 2SM |
| | KBYI 280853Z AUTO 26007KT 2SM BR OVC002 01/00 A2999
RMK AO2 SLP155 T00060000 51012 |
| 01:45 MST |
Overcast
Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1016 mb
(30 in) | W 15 kph
(W 9.2 mph) | - | 2SM |
| | KBYI 280845Z AUTO 27008KT 2SM BR OVC002 01/00 A2999
RMK AO2 |
| 00:53 MST |
Overcast | 1°C / 34°F | 0°C / 32°F | 93% | 1015 mb
(29.97 in) | WNW 17 kph
(WNW 10.4 mph) | - | 9SM |
| | KBYI 280753Z AUTO 29009G16KT 9SM OVC004 01/00 A2998
RMK AO2 SLP150 T00110000 |
| 00:12 MST |
Overcast | 2°C / 36°F | 1°C / 34°F | 93% | 1015 mb
(29.97 in) | WNW 17 kph
(WNW 10.4 mph) | - | 10SM |
| | KBYI 280712Z AUTO 29009KT 10SM OVC004 02/01 A2997
RMK AO2 |
