| 18:55 MST |  Overcast | 2°C / 36°F | 0°C / 32°F | 87% | 1013 mb (29.91 in) | S 9 kph (S 5.8 mph) | - | 10SM |
| | KGPI 230155Z AUTO 18005KT 10SM SCT037 SCT055 OVC070 02/00 A2992 RMK AO2 SLP155 T00170000 TSNO |
| 18:32 MST |  Overcast | 2°C / 36°F | 0°C / 32°F | 87% | 1013 mb (29.91 in) | S 15 kph (S 9.2 mph) | - | 10SM |
| | KGPI 230132Z AUTO 17008KT 10SM SCT029 BKN036 OVC070 02/00 A2991 RMK AO2 TSNO |
| 17:55 MST |  Overcast | 2°C / 36°F | 1°C / 34°F | 93% | 1013 mb (29.91 in) | S 15 kph (S 9.2 mph) | - | 10SM |
| | KGPI 230055Z AUTO 17008KT 10SM FEW005 OVC025 02/01 A2990 RMK AO2 SLP147 T00170006 TSNO |
| 17:46 MST |  Overcast | 2°C / 36°F | 1°C / 34°F | 93% | 1013 mb (29.91 in) | SSE 11 kph (SSE 6.9 mph) | - | 10SM |
| | KGPI 230046Z AUTO 16006KT 10SM SCT005 BKN025 OVC034 02/01 A2990 RMK AO2 TSNO |
| 17:28 MST |  Overcast | 2°C / 36°F | 1°C / 34°F | 93% | 1012 mb (29.88 in) | SSE 11 kph (SSE 6.9 mph) | - | 10SM |
| | KGPI 230028Z AUTO 15006KT 10SM BKN005 BKN023 OVC034 02/01 A2988 RMK AO2 TSNO |
| 17:11 MST |  Overcast | 2°C / 36°F | 1°C / 34°F | 93% | 1012 mb (29.88 in) | SSE 11 kph (SSE 6.9 mph) | - | 10SM |
| | KGPI 230011Z AUTO 16006KT 10SM FEW005 SCT023 OVC034 02/01 A2988 RMK AO2 TSNO |
| 16:55 MST |  Overcast Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1012 mb (29.88 in) | SSE 9 kph (SSE 5.8 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGPI 222355Z AUTO 15005KT 3SM BR OVC034 02/01 A2988 RMK AO2 RAB04E21 SLP140 P0000 60000 T00220006 10044 20017 51022 TSNO |
| 16:11 MST |  Overcast Light Rain | 2°C / 36°F | 1°C / 34°F | 93% | 1012 mb (29.88 in) | SE 6 kph (SE 3.5 mph) | 0.00 mm (0.00 in) | 3SM |
| | KGPI 222311Z 14003KT 3SM -RA BR OVC030 02/01 A2987 RMK AO2 RAB04 P0000 |
| 15:55 MST |  Overcast Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1011 mb (29.85 in) | SE 6 kph (SE 3.5 mph) | - | 3SM |
| | KGPI 222255Z 14003KT 3SM BR FEW005 BKN025 OVC031 02/01 A2986 RMK AO2 SLP134 T00220011 |
| 15:39 MST |  Overcast Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1011 mb (29.85 in) | Calm | - | 5SM |
| | KGPI 222239Z 00000KT 5SM BR FEW005 OVC027 02/01 A2986 RMK AO2 |
| 14:55 MST |  Overcast Fog And Mist | 3°C / 37°F | 1°C / 34°F | 87% | 1010 mb (29.83 in) | SSE 9 kph (SSE 5.8 mph) | - | 5SM |
| | KGPI 222155Z 16005KT 5SM BR OVC027 03/01 A2983 RMK AO2 SLP123 T00280011 |
| 13:55 MST |  Overcast | 3°C / 37°F | 0°C / 32°F | 81% | 1009 mb (29.8 in) | SW 6 kph (SW 3.5 mph) | - | 10SM |
| | KGPI 222055Z 22003KT 10SM BKN020 OVC028 03/00 A2981 RMK AO2 SLP116 T00280000 53011 |
| 12:55 MST |  Mostly Cloudy Fog And Mist | 3°C / 37°F | 2°C / 36°F | 93% | 1009 mb (29.8 in) | Calm | - | 3SM |
| | KGPI 221955Z 00000KT 3SM BR FEW013 BKN027 BKN042 03/02 A2979 RMK AO2 SLP108 T00330017 |
| 11:55 MST |  Partly Cloudy Fog And Mist | 2°C / 36°F | 2°C / 36°F | 100% | 1008 mb (29.77 in) | Calm | - | 3SM |
| | KGPI 221855Z 00000KT 3SM BR SCT001 02/02 A2978 RMK AO2 SLP104 T00220017 |
| 11:42 MST |  Partly Cloudy Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1008 mb (29.77 in) | Calm | - | 3SM |
| | KGPI 221842Z 00000KT 3SM BR SCT001 02/01 A2977 RMK AO2 |
| 11:28 MST |  Overcast Fog | 2°C / 36°F | 1°C / 34°F | 93% | 1008 mb (29.77 in) | Calm | - | 1/4SM |
| | KGPI 221828Z 00000KT 1/4SM FG BKN001 OVC034 02/01 A2978 RMK AO2 |
| 11:19 MST |  Overcast Fog | 2°C / 36°F | 1°C / 34°F | 93% | 1008 mb (29.77 in) | Calm | - | 1/4SM |
| | KGPI 221819Z 00000KT 1/4SM FG BKN003 BKN034 OVC110 02/01 A2977 RMK AO2 |
| 11:11 MST |  Overcast Fog | 2°C / 36°F | 1°C / 34°F | 93% | 1008 mb (29.77 in) | Calm | - | 1/4SM |
| | KGPI 221811Z 00000KT 1/4SM FG FEW001 BKN033 OVC110 02/01 A2977 RMK AO2 |
| 11:06 MST |  Overcast Fog | 2°C / 36°F | 1°C / 34°F | 93% | 1008 mb (29.77 in) | Calm | - | 1/2SM |
| | KGPI 221806Z 00000KT 1/2SM FG SCT001 BKN031 OVC110 02/01 A2977 RMK AO2 |
| 11:01 MST |  Mostly Cloudy Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1008 mb (29.77 in) | Calm | - | 3/4SM |
| | KGPI 221801Z 00000KT 3/4SM BR FEW001 BKN031 BKN110 02/01 A2977 RMK AO2 |
| 10:55 MST |  Mostly Cloudy Fog And Mist | 2°C / 36°F | 1°C / 34°F | 93% | 1008 mb (29.77 in) | Calm | - | 1 1/2SM |
| | KGPI 221755Z 00000KT 1 1/2SM BR FEW003 BKN031 BKN110 02/01 A2977 RMK AO2 SLP102 60000 T00170011 10017 20000 51018 |
| 10:41 MST |  Overcast Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1008 mb (29.77 in) | Calm | - | 2 1/2SM |
| | KGPI 221741Z 00000KT 2 1/2SM BR SCT003 OVC031 01/01 A2977 RMK AO2 VIS 1 NE |
| 10:34 MST |  Overcast Fog And Mist | 1°C / 34°F | 1°C / 34°F | 100% | 1008 mb (29.77 in) | Calm | - | 1 3/4SM |
| | KGPI 221734Z 00000KT 1 3/4SM BR SCT003 OVC029 01/01 A2977 RMK AO2 VIS 1 NE |
| 10:16 MST |  Overcast Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1008 mb (29.77 in) | SSW 6 kph (SSW 3.5 mph) | - | 1 1/4SM |
| | KGPI 221716Z 26003KT 1 1/4SM BR FEW003 OVC027 01/00 A2976 RMK AO2 |
| 09:55 MST |  Overcast Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1008 mb (29.77 in) | Calm | 0.00 mm (0.00 in) | 1 1/2SM |
| | KGPI 221655Z 00000KT 1 1/2SM BR OVC027 01/00 A2976 RMK AO2 RAB1558E23 SLP098 P0000 T00110000 |
| 08:55 MST |  Overcast Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1007 mb (29.74 in) | Calm | - | 1 1/2SM |
| | KGPI 221555Z 00000KT 1 1/2SM BR OVC006 01/00 A2974 RMK AO2 CIG 005V008 SLP094 T00110000 |
| 07:55 MST |  Overcast Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1006 mb (29.71 in) | Calm | 0.00 mm (0.00 in) | 2 1/2SM |
| | KGPI 221455Z 00000KT 2 1/2SM BR BKN008 OVC018 01/00 A2972 RMK AO2 RAE04 SLP083 P0000 60000 T00110000 53011 |
| 07:26 MST |  Overcast Fog And Mist | 1°C / 34°F | 0°C / 32°F | 93% | 1006 mb (29.71 in) | Calm | 0.00 mm (0.00 in) | 2 1/2SM |
| | KGPI 221426Z AUTO 00000KT 2 1/2SM BR BKN006 OVC020 01/00 A2970 RMK AO2 RAE04 P0000 |
| 06:55 MST |  Overcast Light Rain | 1°C / 34°F | 0°C / 32°F | 93% | 1006 mb (29.71 in) | Calm | 0.00 mm (0.00 in) | 4SM |
| | KGPI 221355Z AUTO 00000KT 4SM -RA BR OVC006 01/00 A2970 RMK AO2 RAB54 SLP078 P0000 T00110000 |
| 05:55 MST |  Overcast Fog And Mist | 1°C / 34°F | -1°C / 30°F | 87% | 1005 mb (29.68 in) | Calm | - | 3SM |
| | KGPI 221255Z AUTO 00000KT 3SM BR OVC008 01/M01 A2968 RMK AO2 CIG 006V010 SLP073 T00061006 |
| 05:45 MST |  Overcast Fog And Mist | 1°C / 34°F | -1°C / 30°F | 87% | 1005 mb (29.68 in) | Calm | - | 3SM |
| | KGPI 221245Z AUTO 00000KT 3SM BR OVC008 01/M01 A2968 RMK AO2 CIG 006V011 |
| 05:28 MST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1005 mb (29.68 in) | Calm | - | 2SM |
| | KGPI 221228Z AUTO 00000KT 2SM BR FEW001 OVC010 00/M01 A2968 RMK AO2 |
| 05:13 MST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1005 mb (29.68 in) | Calm | - | 1 1/4SM |
| | KGPI 221213Z AUTO 00000KT 1 1/4SM BR SCT001 OVC012 00/M01 A2968 RMK AO2 |
| 04:55 MST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1005 mb (29.68 in) | Calm | 0.00 mm (0.00 in) | 2 1/2SM |
| | KGPI 221155Z AUTO 00000KT 2 1/2SM BR FEW001 OVC012 00/M01 A2968 RMK AO2 UPB01E29 SLP070 P0000 60000 70007 T00001006 10011 21006 51009 |
| 04:39 MST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1005 mb (29.68 in) | Calm | 0.00 mm (0.00 in) | 2SM |
| | KGPI 221139Z AUTO 00000KT 2SM BR FEW001 BKN014 OVC046 00/M01 A2968 RMK AO2 UPB01E29 P0000 |
| 04:23 MST |  Overcast Unknown Precip | 0°C / 32°F | -1°C / 30°F | 93% | 1005 mb (29.68 in) | Calm | 0.00 mm (0.00 in) | 2 1/2SM |
| | KGPI 221123Z AUTO 00000KT 2 1/2SM UP BR FEW001 SCT013 OVC046 00/M01 A2967 RMK AO2 UPB01 P0000 |
| 04:12 MST |  Overcast Unknown Precip | 0°C / 32°F | -1°C / 30°F | 93% | 1005 mb (29.68 in) | Calm | 0.00 mm (0.00 in) | 3SM |
| | KGPI 221112Z AUTO 00000KT 3SM UP BR FEW001 BKN013 OVC050 00/M01 A2967 RMK AO2 UPB01 P0000 |
| 03:55 MST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1005 mb (29.68 in) | Calm | - | 3SM |
| | KGPI 221055Z AUTO 00000KT 3SM BR FEW011 BKN050 OVC065 00/M01 A2967 RMK AO2 SLP067 T00001006 |
| 02:55 MST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1004 mb (29.65 in) | Calm | 0.00 mm (0.00 in) | 3SM |
| | KGPI 220955Z AUTO 00000KT 3SM BR FEW001 BKN047 OVC080 00/M01 A2966 RMK AO2 UPB25E49RAB49E51 SLP063 P0000 T00001006 |
| 02:36 MST |  Overcast Unknown Precip | 0°C / 32°F | -1°C / 30°F | 93% | 1004 mb (29.65 in) | Calm | 0.00 mm (0.00 in) | 2SM |
| | KGPI 220936Z AUTO 00000KT 2SM UP BR FEW001 SCT031 OVC049 00/M01 A2966 RMK AO2 UPB25 P0000 |
| 02:19 MST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1004 mb (29.65 in) | NE 6 kph (NE 3.5 mph) | - | 2 1/2SM |
| | KGPI 220919Z AUTO 05003KT 2 1/2SM BR FEW028 OVC049 00/M01 A2965 RMK AO2 |
| 02:10 MST |  Overcast Fog And Mist | -1°C / 30°F | -1°C / 30°F | 100% | 1004 mb (29.65 in) | ENE 7 kph (ENE 4.6 mph) | - | 1 1/2SM |
| | KGPI 220910Z AUTO 06004KT 1 1/2SM BR BKN047 BKN055 OVC090 M01/M01 A2965 RMK AO2 |
| 02:02 MST |  Overcast Fog And Mist | -1°C / 30°F | -1°C / 30°F | 100% | 1004 mb (29.65 in) | Calm | - | 3/4SM |
| | KGPI 220902Z AUTO 00000KT 3/4SM BR SCT043 BKN055 OVC090 M01/M01 A2965 RMK AO2 |
| 01:55 MST |  Overcast Fog And Mist | -1°C / 30°F | -2°C / 28°F | 93% | 1004 mb (29.65 in) | Calm | - | 1SM |
| | KGPI 220855Z AUTO 00000KT 1SM BR SCT043 OVC095 M01/M02 A2965 RMK AO2 SLP060 T10061017 56001 |
| 01:47 MST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1004 mb (29.65 in) | Calm | - | 1SM |
| | KGPI 220847Z 00000KT 1SM BR FEW070 OVC095 00/M01 A2965 RMK AO2 |
| 01:13 MST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1004 mb (29.65 in) | Calm | - | 1 1/2SM |
| | KGPI 220813Z 00000KT 1 1/2SM BR SCT028 OVC080 00/M01 A2965 RMK AO2 |
| 01:00 MST |  Overcast Fog And Mist | 1°C / 34°F | -1°C / 30°F | 87% | 1004 mb (29.65 in) | Calm | - | 1 1/4SM |
| | KGPI 220800Z 00000KT 1 1/4SM BR FEW010 BKN028 OVC090 01/M01 A2965 RMK AO2 |
| 00:55 MST |  Overcast Fog And Mist | 0°C / 32°F | -1°C / 30°F | 93% | 1004 mb (29.65 in) | Calm | - | 2SM |
| | KGPI 220755Z 00000KT 2SM BR FEW010 BKN028 OVC090 00/M01 A2965 RMK AO2 SLP059 T00001006 |