| 17:50 EST |  Overcast Fog And Mist | 9°C / 48°F | 9°C / 48°F | 100% | 1008 mb (29.77 in) | Calm | - | 5SM |
| | KMTN 262250Z 00000KT 5SM BR BKN025 OVC035 09/09 A2977 |
| 16:55 EST |  Overcast Fog And Mist | 11°C / 52°F | 10°C / 50°F | 94% | 1009 mb (29.8 in) | NW 9 kph (NW 5.8 mph) | - | 4SM |
| | KMTN 262155Z 31005KT 4SM BR BKN020 OVC030 11/10 A2979 |
| 15:45 EST |  Mostly Cloudy Fog And Mist | 12°C / 54°F | 11°C / 52°F | 94% | 1009 mb (29.8 in) | Calm | - | 4SM |
| | KMTN 262045Z 00000KT 4SM BR BKN020 12/11 A2980 |
| 14:45 EST |  Overcast Fog And Mist | 11°C / 52°F | 11°C / 52°F | 100% | 1010 mb (29.83 in) | Calm | - | 3SM |
| | KMTN 261945Z 00000KT 3SM BR BKN010 OVC015 11/11 A2982 |
| 13:45 EST |  Overcast Fog And Mist | 10°C / 50°F | 10°C / 50°F | 100% | 1011 mb (29.85 in) | Calm | - | 3SM |
| | KMTN 261845Z 00000KT 3SM BR BKN007 OVC012 10/10 A2985 |
| 12:50 EST |  Overcast Fog And Mist | 10°C / 50°F | 10°C / 50°F | 100% | 1012 mb (29.88 in) | E 6 kph (E 3.5 mph) | - | 2SM |
| | KMTN 261750Z 09003KT 2SM BR OVC005 10/10 A2987 |
| 11:50 EST |  Overcast Fog And Mist | 10°C / 50°F | 10°C / 50°F | 100% | 1013 mb (29.91 in) | ESE 7 kph (ESE 4.6 mph) | - | 2SM |
| | KMTN 261650Z 11004KT 2SM BR OVC005 10/10 A2990 |
| 10:45 EST |  Overcast Fog And Mist | 10°C / 50°F | 10°C / 50°F | 100% | 1014 mb (29.94 in) | Calm | - | 2SM |
| | KMTN 261545Z 00000KT 2SM BR OVC004 10/10 A2993 |
| 10:27 EST |  Overcast Fog And Mist | 10°C / 50°F | 10°C / 50°F | 100% | 1014 mb (29.94 in) | Calm | - | 2SM |
| | KMTN 261527Z 00000KT 2SM BR OVC004 10/10 A2994 |
| 09:45 EST |  Overcast Fog And Mist | 10°C / 50°F | 10°C / 50°F | 100% | 1014 mb (29.94 in) | Calm | - | 2SM |
| | KMTN 261445Z 00000KT 2SM BR OVC003 10/10 A2994 |
| 08:46 EST |  Overcast Fog | 10°C / 50°F | 10°C / 50°F | 100% | 1014 mb (29.94 in) | Calm | - | 3/4SM |
| | KMTN 261346Z 00000KT 3/4SM FG OVC001 10/10 A2995 |
| 07:45 EST |  Overcast Fog | 9°C / 48°F | 9°C / 48°F | 100% | 1014 mb (29.94 in) | NE 6 kph (NE 3.5 mph) | - | 1/4SM |
| | KMTN 261245Z 04003KT 1/4SM FG OVC001 09/09 A2995 |
| 06:45 EST |  Overcast Fog And Mist | 9°C / 48°F | 9°C / 48°F | 100% | 1014 mb (29.94 in) | Calm | - | 3/4SM |
| | KMTN 261145Z 00000KT 3/4SM BR OVC001 09/09 A2995 |
| 05:55 EST |  Overcast Fog | 9°C / 48°F | 9°C / 48°F | 100% | 1014 mb (29.94 in) | Calm | - | 1/2SM |
| | KMTN 261055Z 00000KT 1/2SM FG OVC001 09/09 A2995 RMK FIRST |
| 04:30 EST |  Overcast Fog | 8°C / 46°F | 8°C / 46°F | 100% | 1014 mb (29.94 in) | Calm | - | 1/4SM |
| | KMTN 260930Z AUTO 00000KT 1/4SM FG OVC001 08/08 A2994 RMK AO2 |
| 04:12 EST |  Overcast Fog | 8°C / 46°F | 8°C / 46°F | 100% | 1014 mb (29.94 in) | Calm | - | 1/4SM |
| | KMTN 260912Z AUTO 00000KT 1/4SM FG OVC001 08/08 A2994 RMK AO2 |
| 03:51 EST |  Overcast Fog | 9°C / 48°F | 9°C / 48°F | 100% | 1014 mb (29.94 in) | Calm | - | 1/4SM |
| | KMTN 260851Z AUTO 00000KT 1/4SM FG OVC001 09/09 A2994 RMK AO2 |
| 03:27 EST |  Overcast Fog | 9°C / 48°F | 9°C / 48°F | 100% | 1014 mb (29.94 in) | Calm | - | 1/4SM |
| | KMTN 260827Z AUTO 00000KT 1/4SM FG OVC001 09/09 A2994 RMK AO2 |
| 03:06 EST |  Overcast Fog | 9°C / 48°F | 9°C / 48°F | 100% | 1014 mb (29.94 in) | Calm | - | 1/4SM |
| | KMTN 260806Z AUTO 00000KT 1/4SM FG OVC001 09/09 A2994 RMK AO2 |
| 02:45 EST |  Overcast Fog | 9°C / 48°F | 9°C / 48°F | 100% | 1014 mb (29.94 in) | Calm | - | 1/4SM |
| | KMTN 260745Z AUTO 00000KT 1/4SM FG OVC001 09/09 A2995 RMK AO2 |
| 02:24 EST |  Overcast Fog | 10°C / 50°F | 10°C / 50°F | 100% | 1014 mb (29.94 in) | Calm | - | M1/4SM |
| | KMTN 260724Z AUTO 00000KT M1/4SM FG OVC001 10/10 A2995 RMK AO2 |
| 02:03 EST |  Overcast Fog | 10°C / 50°F | 10°C / 50°F | 100% | 1015 mb (29.97 in) | Calm | - | 1/4SM |
| | KMTN 260703Z AUTO 00000KT 1/4SM FG OVC001 10/10 A2996 RMK AO2 |
| 01:42 EST |  Overcast Fog | 10°C / 50°F | 10°C / 50°F | 100% | 1015 mb (29.97 in) | Calm | - | 1/4SM |
| | KMTN 260642Z AUTO 00000KT 1/4SM FG OVC001 10/10 A2996 RMK AO2 |
| 01:21 EST |  Overcast Fog | 10°C / 50°F | 10°C / 50°F | 100% | 1015 mb (29.97 in) | Calm | - | 1/4SM |
| | KMTN 260621Z AUTO 00000KT 1/4SM FG OVC001 10/10 A2996 RMK AO2 |
| 01:00 EST |  Overcast Fog | 10°C / 50°F | 10°C / 50°F | 100% | 1014 mb (29.94 in) | Calm | - | 1/4SM |
| | KMTN 260600Z AUTO 00000KT 1/4SM FG OVC001 10/10 A2995 RMK AO2 |
| 00:39 EST |  Overcast Fog | 10°C / 50°F | 10°C / 50°F | 100% | 1014 mb (29.94 in) | Calm | - | 1/4SM |
| | KMTN 260539Z AUTO 00000KT 1/4SM FG OVC001 10/10 A2994 RMK AO2 |
| 00:18 EST |  Overcast Fog And Mist | 10°C / 50°F | 10°C / 50°F | 100% | 1014 mb (29.94 in) | Calm | - | 3/4SM |
| | KMTN 260518Z AUTO 00000KT 3/4SM BR OVC001 10/10 A2995 RMK AO2 |