| 14:53 MST | 
Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1023 mb
(30.21 in) | Calm | - | 8SM |
| | KBYI 252153Z AUTO 00000KT 8SM OVC010 M06/M08 A3020
RMK AO2 SLP273 T10561083 |
| 14:37 MST |
Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1023 mb
(30.21 in) | Calm | - | 7SM |
| | KBYI 252137Z AUTO 00000KT 7SM OVC010 M06/M08 A3020
RMK AO2 |
| 13:53 MST |
Overcast | -6°C / 21°F | -8°C / 18°F | 86% | 1023 mb
(30.21 in) | E 9 kph
(E 5.8 mph) | - | 8SM |
| | KBYI 252053Z AUTO 08005KT 8SM OVC008 M06/M08 A3020
RMK AO2 SLP273 T10611078 55006 |
| 12:53 MST |
Overcast | -7°C / 19°F | -7°C / 19°F | 100% | 1023 mb
(30.21 in) | Calm | - | 9SM |
| | KBYI 251953Z AUTO 00000KT 9SM OVC006 M07/M07 A3020
RMK AO2 SLP272 T10671072 |
| 11:53 MST | 
Overcast
Fog And Mist | -7°C / 19°F | -8°C / 18°F | 93% | 1023 mb
(30.21 in) | SSW 6 kph
(SSW 3.5 mph) | - | 6SM |
| | KBYI 251853Z AUTO 26003KT 6SM BR OVC004 M07/M08 A3022
RMK AO2 SLP283 T10721083 |
| 10:53 MST |
Overcast
Fog And Mist | -8°C / 18°F | -8°C / 18°F | 100% | 1024 mb
(30.24 in) | Variable 6 kph
(Variable 3.5 mph) | - | 6SM |
| | KBYI 251753Z AUTO VRB03KT 6SM BR OVC004 M08/M08 A3025
RMK AO2 SLP290 T10781083 11078 21122 51008 |
| 09:53 MST |
Overcast
Fog And Mist | -8°C / 18°F | -9°C / 16°F | 93% | 1024 mb
(30.24 in) | Calm | - | 4SM |
| | KBYI 251653Z AUTO 00000KT 4SM BR OVC004 M08/M09 A3025
RMK AO2 SLP289 T10831094 |
| 08:53 MST |
Overcast | -9°C / 16°F | -11°C / 12°F | 86% | 1024 mb
(30.24 in) | Calm | - | 9SM |
| | KBYI 251553Z AUTO 00000KT 9SM OVC004 M09/M11 A3023
RMK AO2 SLP285 T10891106 |
| 08:13 MST |
Overcast | -9°C / 16°F | -11°C / 12°F | 86% | 1023 mb
(30.21 in) | Calm | - | 10SM |
| | KBYI 251513Z AUTO 00000KT 10SM OVC004 M09/M11 A3022
RMK AO2 |
| 07:53 MST |
Overcast | -10°C / 14°F | -13°C / 9°F | 79% | 1023 mb
(30.21 in) | SW 7 kph
(SW 4.6 mph) | - | 10SM |
| | KBYI 251453Z AUTO 23004KT 10SM OVC006 M10/M13 A3022
RMK AO2 SLP278 T11001128 50000 |
| 06:53 MST |
Overcast | -11°C / 12°F | -13°C / 9°F | 85% | 1024 mb
(30.24 in) | SE 6 kph
(SE 3.5 mph) | - | 10SM |
| | KBYI 251353Z AUTO 12003KT 10SM OVC008 M11/M13 A3023
RMK AO2 SLP281 T11111133 |
| 06:09 MST | 
Mostly Cloudy | -11°C / 12°F | -13°C / 9°F | 85% | 1023 mb
(30.21 in) | S 6 kph
(S 3.5 mph) | - | 10SM |
| | KBYI 251309Z AUTO 18003KT 10SM BKN008 M11/M13 A3022
RMK AO2 |
| 05:53 MST | 
Partly Cloudy | -12°C / 10°F | -14°C / 7°F | 85% | 1024 mb
(30.24 in) | S 6 kph
(S 3.5 mph) | - | 10SM |
| | KBYI 251253Z AUTO 17003KT 10SM FEW008 M12/M14 A3023
RMK AO2 SLP285 T11221144 |
| 05:14 MST |
Partly Cloudy | -11°C / 12°F | -13°C / 9°F | 85% | 1023 mb
(30.21 in) | Calm | - | 10SM |
| | KBYI 251214Z AUTO 00000KT 10SM SCT008 M11/M13 A3022
RMK AO2 |
| 04:53 MST |
Overcast | -11°C / 12°F | -13°C / 9°F | 85% | 1023 mb
(30.21 in) | Calm | - | 10SM |
| | KBYI 251153Z AUTO 00000KT 10SM OVC008 M11/M13 A3022
RMK AO2 SLP274 T11061128 11089 21122 58003 |
| 03:53 MST |
Mostly Cloudy | -11°C / 12°F | -13°C / 9°F | 85% | 1024 mb
(30.24 in) | Calm | - | 10SM |
| | KBYI 251053Z AUTO 00000KT 10SM BKN008 M11/M13 A3023
RMK AO2 SLP278 T11111133 |
| 03:43 MST |
Partly Cloudy | -11°C / 12°F | -13°C / 9°F | 85% | 1024 mb
(30.24 in) | Calm | - | 10SM |
| | KBYI 251043Z AUTO 00000KT 10SM SCT008 M11/M13 A3023
RMK AO2 |
| 03:31 MST |
Mostly Cloudy | -11°C / 12°F | -13°C / 9°F | 85% | 1024 mb
(30.24 in) | Calm | - | 10SM |
| | KBYI 251031Z AUTO 00000KT 10SM BKN008 M11/M13 A3023
RMK AO2 |
| 02:53 MST |
Partly Cloudy | -12°C / 10°F | -14°C / 7°F | 85% | 1024 mb
(30.24 in) | E 6 kph
(E 3.5 mph) | - | 10SM |
| | KBYI 250953Z AUTO 08003KT 10SM FEW008 M12/M14 A3023
RMK AO2 SLP279 T11171139 |
| 02:39 MST |
Partly Cloudy
Fog And Mist | -11°C / 12°F | -13°C / 9°F | 85% | 1024 mb
(30.24 in) | Calm | - | 5SM |
| | KBYI 250939Z AUTO 00000KT 5SM BR FEW001 SCT010 M11/M13 A3023
RMK AO2 |
| 02:31 MST |
Partly Cloudy
Fog And Mist | -11°C / 12°F | -12°C / 10°F | 92% | 1024 mb
(30.24 in) | Calm | - | 2SM |
| | KBYI 250931Z AUTO 00000KT 2SM BR SCT001 SCT010 M11/M12 A3023
RMK AO2 |
| 02:28 MST |
Partly Cloudy
Fog And Mist | -11°C / 12°F | -12°C / 10°F | 92% | 1024 mb
(30.24 in) | Calm | - | 1 1/4SM |
| | KBYI 250928Z AUTO 00000KT 1 1/4SM BR SCT001 SCT010 M11/M12 A3023
RMK AO2 |
| 02:19 MST |
Partly Cloudy
Fog And Mist | -11°C / 12°F | -12°C / 10°F | 92% | 1024 mb
(30.24 in) | Calm | - | 3/4SM |
| | KBYI 250919Z AUTO 00000KT 3/4SM BR SCT001 SCT010 M11/M12 A3023
RMK AO2 |
| 02:12 MST |
Obscured
Fog And Mist | -11°C / 12°F | -12°C / 10°F | 92% | 1024 mb
(30.24 in) | ENE 7 kph
(ENE 4.6 mph) | - | 3/4SM |
| | KBYI 250912Z AUTO 07004KT 3/4SM BR VV001 M11/M12 A3023
RMK AO2 |
| 02:10 MST |
Partly Cloudy
Fog And Mist | -11°C / 12°F | -12°C / 10°F | 92% | 1024 mb
(30.24 in) | ENE 6 kph
(ENE 3.5 mph) | - | 1 1/4SM |
| | KBYI 250910Z AUTO 07003KT 1 1/4SM BR SCT001 M11/M12 A3023
RMK AO2 |
| 02:06 MST |
Partly Cloudy
Fog And Mist | -11°C / 12°F | -12°C / 10°F | 92% | 1024 mb
(30.24 in) | ENE 7 kph
(ENE 4.6 mph) | - | 2 1/2SM |
| | KBYI 250906Z AUTO 07004KT 2 1/2SM BR FEW001 M11/M12 A3023
RMK AO2 |
| 01:53 MST |
Clear
Fog And Mist | -11°C / 12°F | -12°C / 10°F | 92% | 1024 mb
(30.24 in) | ENE 7 kph
(ENE 4.6 mph) | - | 6SM |
| | KBYI 250853Z AUTO 06004KT 6SM BR CLR M11/M12 A3023
RMK AO2 SLP277 T11061122 55006 |
| 00:53 MST | 
Clear | -10°C / 14°F | -12°C / 10°F | 85% | 1023 mb
(30.21 in) | NNW 6 kph
(NNW 3.5 mph) | - | 7SM |
| | KBYI 250753Z AUTO 33003KT 7SM CLR M10/M12 A3022
RMK AO2 SLP275 T11001122 |
