| 20:56 PST |  Clear | N/A | N/A | N/A | 1026 mb (30.3 in) | E 7 kph (E 4.6 mph) | - | 10SM |
| | KSMP 240456Z AUTO 09004KT 10SM CLR A3030 RMK AO2 SLPNO TSNO $ |
| 19:56 PST |  Clear | N/A | N/A | N/A | 1026 mb (30.3 in) | E 7 kph (E 4.6 mph) | - | 10SM |
| | KSMP 240356Z AUTO 09004KT 10SM CLR A3031 RMK AO2 SLPNO TSNO $ |
| 18:56 PST |  Partly Cloudy | N/A | N/A | N/A | 1026 mb (30.3 in) | ESE 6 kph (ESE 3.5 mph) | - | 10SM |
| | KSMP 240256Z AUTO 11003KT 10SM SCT120 A3031 RMK AO2 SLPNO 53003 TSNO $ |
| 17:56 PST |  Clear | N/A | N/A | N/A | 1026 mb (30.3 in) | E 7 kph (E 4.6 mph) | - | 10SM |
| | KSMP 240156Z AUTO 09004KT 10SM CLR A3030 RMK AO2 SLPNO TSNO $ |
| 16:56 PST |  Clear | N/A | N/A | N/A | 1026 mb (30.3 in) | E 6 kph (E 3.5 mph) | - | 10SM |
| | KSMP 240056Z AUTO 10003KT 10SM CLR A3029 RMK AO2 SLPNO TSNO $ |
| 15:56 PST |  Clear | N/A | N/A | N/A | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KSMP 232356Z AUTO 00000KT 10SM CLR A3030 RMK AO2 SLPNO 53006 TSNO $ |
| 14:56 PST |  Partly Cloudy | N/A | N/A | N/A | 1026 mb (30.3 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KSMP 232256Z AUTO 24004KT 10SM FEW002 A3029 RMK AO2 SLPNO TSNO $ |
| 14:40 PST |  Partly Cloudy | N/A | N/A | N/A | 1026 mb (30.3 in) | Variable 7 kph (Variable 4.6 mph) | - | 10SM |
| | KSMP 232240Z AUTO VRB04KT 10SM SCT002 A3029 RMK AO2 TSNO $ |
| 14:15 PST |  Overcast | N/A | N/A | N/A | 1026 mb (30.3 in) | SSW 11 kph (SSW 6.9 mph) | - | 8SM |
| | KSMP 232215Z AUTO 24006KT 8SM OVC002 A3029 RMK AO2 TSNO $ |
| 14:08 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1025 mb (30.27 in) | Variable 11 kph (Variable 6.9 mph) | - | 2 1/2SM |
| | KSMP 232208Z AUTO VRB06KT 2 1/2SM BR OVC004 A3028 RMK AO2 TSNO $ |
| 13:56 PST |  Overcast | N/A | N/A | N/A | 1025 mb (30.27 in) | SW 7 kph (SW 4.6 mph) | - | 7SM |
| | KSMP 232156Z AUTO 23004KT 7SM OVC004 A3028 RMK AO2 SLPNO TSNO $ |
| 13:44 PST |  Overcast | N/A | N/A | N/A | 1026 mb (30.3 in) | SSW 9 kph (SSW 5.8 mph) | - | 9SM |
| | KSMP 232144Z AUTO 24005KT 9SM OVC004 A3029 RMK AO2 TSNO $ |
| 13:37 PST |  Overcast | N/A | N/A | N/A | 1026 mb (30.3 in) | Variable 7 kph (Variable 4.6 mph) | - | 7SM |
| | KSMP 232137Z AUTO VRB04KT 7SM SCT002 OVC005 A3029 RMK AO2 TSNO $ |
| 13:32 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1026 mb (30.3 in) | SW 9 kph (SW 5.8 mph) | - | 2 1/2SM |
| | KSMP 232132Z AUTO 23005KT 2 1/2SM BR BKN002 OVC005 A3029 RMK AO2 TSNO $ |
| 13:22 PST |  Overcast Hazy | N/A | N/A | N/A | 1026 mb (30.3 in) | Variable 6 kph (Variable 3.5 mph) | - | 4SM |
| | KSMP 232122Z AUTO VRB03KT 4SM HZ BKN002 OVC007 A3029 RMK AO2 TSNO $ |
| 13:19 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1026 mb (30.3 in) | Variable 6 kph (Variable 3.5 mph) | - | 1 1/2SM |
| | KSMP 232119Z AUTO VRB03KT 1 1/2SM BR BKN002 BKN005 OVC022 A3029 RMK AO2 VIS 1/2V5 TSNO $ |
| 13:16 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1026 mb (30.3 in) | Variable 7 kph (Variable 4.6 mph) | - | 1SM |
| | KSMP 232116Z AUTO VRB04KT 1SM BR SCT002 BKN005 OVC095 A3029 RMK AO2 TSNO $ |
| 13:10 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1026 mb (30.3 in) | Variable 7 kph (Variable 4.6 mph) | - | 3/4SM |
| | KSMP 232110Z AUTO VRB04KT 3/4SM BR BKN002 BKN033 OVC095 A3029 RMK AO2 TSNO $ |
| 13:04 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1026 mb (30.3 in) | Variable 6 kph (Variable 3.5 mph) | - | 1 3/4SM |
| | KSMP 232104Z AUTO VRB03KT 1 3/4SM BR BKN002 BKN055 OVC095 A3029 RMK AO2 TSNO $ |
| 12:56 PST |  Overcast Hazy | N/A | N/A | N/A | 1025 mb (30.27 in) | Variable 6 kph (Variable 3.5 mph) | - | 6SM |
| | KSMP 232056Z AUTO VRB03KT 6SM HZ SCT004 BKN080 OVC100 A3028 RMK AO2 SLPNO 57003 TSNO $ |
| 12:06 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1025 mb (30.27 in) | Calm | - | 3SM |
| | KSMP 232006Z AUTO 00000KT 3SM BR OVC002 A3028 RMK AO2 TSNO $ |
| 12:02 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1025 mb (30.27 in) | Variable 6 kph (Variable 3.5 mph) | - | 1 3/4SM |
| | KSMP 232002Z AUTO VRB03KT 1 3/4SM BR OVC002 A3028 RMK AO2 VIS 1V4 TSNO $ |
| 11:56 PST |  Obscured Fog | N/A | N/A | N/A | 1025 mb (30.27 in) | SSW 9 kph (SSW 5.8 mph) | - | 1/2SM |
| | KSMP 231956Z AUTO 25005KT 1/2SM FG VV002 A3028 RMK AO2 SLPNO TSNO $ |
| 10:56 PST |  Overcast Fog | N/A | N/A | N/A | 1026 mb (30.3 in) | SSW 11 kph (SSW 6.9 mph) | - | 1/4SM |
| | KSMP 231856Z AUTO 26006KT 1/4SM FG BKN001 OVC007 A3029 RMK AO2 SLPNO TSNO $ |
| 10:18 PST |  Overcast Fog | N/A | N/A | N/A | 1026 mb (30.3 in) | SSW 13 kph (SSW 8.1 mph) | - | 1/4SM |
| | KSMP 231818Z AUTO 25007KT 1/4SM FG BKN001 OVC005 A3030 RMK AO2 TSNO $ |
| 10:13 PST |  Overcast Fog | N/A | N/A | N/A | 1026 mb (30.3 in) | SSW 13 kph (SSW 8.1 mph) | - | 1/2SM |
| | KSMP 231813Z AUTO 25007KT 1/2SM FG BKN003 OVC007 A3030 RMK AO2 TSNO $ |
| 10:03 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1026 mb (30.3 in) | Variable 9 kph (Variable 5.8 mph) | - | 1SM |
| | KSMP 231803Z AUTO VRB05KT 1SM BR BKN001 OVC005 A3029 RMK AO2 TSNO $ |
| 09:56 PST |  Overcast Fog | N/A | N/A | N/A | 1026 mb (30.3 in) | SSW 11 kph (SSW 6.9 mph) | - | 1/2SM |
| | KSMP 231756Z AUTO 25006KT 1/2SM FG SCT001 OVC007 A3029 RMK AO2 SLPNO 60046 52006 TSNO $ |
| 09:47 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1026 mb (30.3 in) | SSW 11 kph (SSW 6.9 mph) | - | 1 1/4SM |
| | KSMP 231747Z AUTO 24006KT 1 1/4SM BR SCT001 BKN007 OVC010 A3029 RMK AO2 TSNO $ |
| 09:22 PST |  Obscured Fog | N/A | N/A | N/A | 1025 mb (30.27 in) | Variable 7 kph (Variable 4.6 mph) | - | 1/2SM |
| | KSMP 231722Z AUTO VRB04KT 1/2SM FG VV001 A3028 RMK AO2 TSNO $ |
| 08:56 PST |  Obscured Fog | N/A | N/A | N/A | 1025 mb (30.27 in) | Variable 9 kph (Variable 5.8 mph) | - | M1/4SM |
| | KSMP 231656Z AUTO VRB05KT M1/4SM FG VV001 A3028 RMK AO2 SLPNO TSNO $ |
| 08:51 PST |  Overcast Fog | N/A | N/A | N/A | 1025 mb (30.27 in) | SSW 11 kph (SSW 6.9 mph) | - | 1/4SM |
| | KSMP 231651Z AUTO 24006KT 1/4SM FG OVC001 A3028 RMK AO2 TSNO $ |
| 08:41 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1025 mb (30.27 in) | SSW 13 kph (SSW 8.1 mph) | - | 3/4SM |
| | KSMP 231641Z AUTO 25007KT 3/4SM BR OVC001 A3027 RMK AO2 TSNO $ |
| 08:34 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1025 mb (30.27 in) | SSW 13 kph (SSW 8.1 mph) | - | 1 1/2SM |
| | KSMP 231634Z AUTO 25007KT 1 1/2SM BR BKN001 OVC005 A3027 RMK AO2 VIS 1/2V4 TSNO $ |
| 08:16 PST |  Overcast Fog | N/A | N/A | N/A | 1025 mb (30.27 in) | SW 11 kph (SW 6.9 mph) | - | 1/2SM |
| | KSMP 231616Z AUTO 23006KT 1/2SM FG OVC001 A3026 RMK AO2 TSNO $ |
| 07:56 PST |  Obscured Fog | N/A | N/A | N/A | 1025 mb (30.27 in) | SSW 9 kph (SSW 5.8 mph) | 5.84 mm (0.23 in) | 1/4SM |
| | KSMP 231556Z AUTO 24005KT 1/4SM FG VV001 A3027 RMK AO2 SLPNO P0023 TSNO $ |
| 07:29 PST |  Obscured Fog | N/A | N/A | N/A | 1025 mb (30.27 in) | Variable 6 kph (Variable 3.5 mph) | 5.84 mm (0.23 in) | 1/2SM |
| | KSMP 231529Z AUTO VRB03KT 1/2SM FG VV001 A3026 RMK AO2 P0023 TSNO $ |
| 06:56 PST |  Overcast Fog | N/A | N/A | N/A | 1025 mb (30.27 in) | Variable 9 kph (Variable 5.8 mph) | 5.84 mm (0.23 in) | 1/4SM |
| | KSMP 231456Z AUTO VRB05KT 1/4SM FG BKN001 OVC007 A3026 RMK AO2 SLPNO P0023 60023 52006 TSNO $ |
| 06:44 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 9 kph (Variable 5.8 mph) | - | 3/4SM |
| | KSMP 231444Z AUTO VRB05KT 3/4SM BR BKN003 OVC007 A3025 RMK AO2 TSNO $ |
| 06:36 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 9 kph (Variable 5.8 mph) | - | 1 3/4SM |
| | KSMP 231436Z AUTO VRB05KT 1 3/4SM BR BKN003 OVC007 A3025 RMK AO2 TSNO $ |
| 06:29 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 7 kph (Variable 4.6 mph) | - | 1 1/4SM |
| | KSMP 231429Z AUTO VRB04KT 1 1/4SM BR OVC003 A3025 RMK AO2 TSNO $ |
| 06:15 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 7 kph (Variable 4.6 mph) | - | 1 1/2SM |
| | KSMP 231415Z AUTO VRB04KT 1 1/2SM BR BKN001 OVC006 A3025 RMK AO2 VIS 3/4V4 TSNO $ |
| 06:10 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Calm | - | 3/4SM |
| | KSMP 231410Z AUTO 00000KT 3/4SM BR BKN001 OVC008 A3025 RMK AO2 TSNO $ |
| 06:01 PST |  Overcast Fog | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 6 kph (Variable 3.5 mph) | - | 1/2SM |
| | KSMP 231401Z AUTO VRB03KT 1/2SM FG OVC003 A3025 RMK AO2 TSNO $ |
| 05:56 PST |  Overcast Fog | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 7 kph (Variable 4.6 mph) | - | 1/4SM |
| | KSMP 231356Z AUTO VRB04KT 1/4SM FG BKN001 OVC005 A3025 RMK AO2 SLPNO TSNO $ |
| 05:52 PST |  Overcast Fog | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 6 kph (Variable 3.5 mph) | - | 1/4SM |
| | KSMP 231352Z AUTO VRB03KT 1/4SM FG BKN001 OVC005 A3025 RMK AO2 TSNO $ |
| 05:42 PST |  Overcast Fog | N/A | N/A | N/A | 1024 mb (30.24 in) | SSW 7 kph (SSW 4.6 mph) | - | 1/2SM |
| | KSMP 231342Z AUTO 26004KT 1/2SM FG BKN001 OVC005 A3025 RMK AO2 TSNO $ |
| 05:26 PST |  Obscured Fog | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 6 kph (Variable 3.5 mph) | - | 1/4SM |
| | KSMP 231326Z AUTO VRB03KT 1/4SM FG VV001 A3025 RMK AO2 TSNO $ |
| 04:56 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 7 kph (Variable 4.6 mph) | - | 3/4SM |
| | KSMP 231256Z AUTO VRB04KT 3/4SM BR BKN001 OVC008 A3024 RMK AO2 SLPNO TSNO $ |
| 04:35 PST |  Overcast Fog | N/A | N/A | N/A | 1024 mb (30.24 in) | SW 7 kph (SW 4.6 mph) | - | 1/2SM |
| | KSMP 231235Z AUTO 23004KT 1/2SM FG BKN001 OVC008 A3023 RMK AO2 TSNO $ |
| 04:28 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 9 kph (Variable 5.8 mph) | - | 3/4SM |
| | KSMP 231228Z AUTO VRB05KT 3/4SM BR SCT001 OVC008 A3023 RMK AO2 VIS 1/2V2 TSNO $ |
| 04:23 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 7 kph (Variable 4.6 mph) | - | 1 1/2SM |
| | KSMP 231223Z AUTO VRB04KT 1 1/2SM BR SCT001 OVC008 A3023 RMK AO2 VIS 3/4V2 1/2 TSNO $ |
| 04:19 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 7 kph (Variable 4.6 mph) | - | 3/4SM |
| | KSMP 231219Z AUTO VRB04KT 3/4SM BR SCT001 OVC008 A3023 RMK AO2 VIS 1/4V2 1/2 TSNO $ |
| 04:12 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 7 kph (Variable 4.6 mph) | - | 1 1/4SM |
| | KSMP 231212Z AUTO VRB04KT 1 1/4SM BR BKN001 OVC008 A3023 RMK AO2 VIS 1/4V5 TSNO $ |
| 03:59 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 7 kph (Variable 4.6 mph) | - | 3SM |
| | KSMP 231159Z AUTO VRB04KT 3SM BR BKN001 OVC008 A3023 RMK AO2 TSNO $ |
| 03:56 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Calm | - | 1 1/2SM |
| | KSMP 231156Z AUTO 00000KT 1 1/2SM BR BKN001 OVC008 A3023 RMK AO2 VIS 3/4V5 SLPNO 60023 70046 53009 TSNO $ |
| 03:36 PST |  Overcast Fog | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 7 kph (Variable 4.6 mph) | - | 1/2SM |
| | KSMP 231136Z AUTO VRB04KT 1/2SM FG BKN001 OVC008 A3023 RMK AO2 TSNO $ |
| 03:29 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1024 mb (30.24 in) | Variable 6 kph (Variable 3.5 mph) | - | 1 1/4SM |
| | KSMP 231129Z AUTO VRB03KT 1 1/4SM BR BKN001 OVC006 A3023 RMK AO2 TSNO $ |
| 03:21 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1023 mb (30.21 in) | Variable 9 kph (Variable 5.8 mph) | - | 1 1/2SM |
| | KSMP 231121Z AUTO VRB05KT 1 1/2SM BR SCT001 OVC006 A3022 RMK AO2 VIS 3/4V4 TSNO $ |
| 03:16 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1023 mb (30.21 in) | Variable 6 kph (Variable 3.5 mph) | - | 1 1/4SM |
| | KSMP 231116Z AUTO VRB03KT 1 1/4SM BR BKN003 OVC006 A3022 RMK AO2 VIS 1/2V5 TSNO $ |
| 03:09 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1023 mb (30.21 in) | SSW 9 kph (SSW 5.8 mph) | - | 1 1/2SM |
| | KSMP 231109Z AUTO 24005KT 1 1/2SM BR BKN001 BKN008 OVC014 A3022 RMK AO2 VIS 1/2V5 TSNO $ |
| 03:06 PST |  Overcast Fog And Mist | N/A | N/A | N/A | 1023 mb (30.21 in) | Variable 6 kph (Variable 3.5 mph) | - | 1SM |
| | KSMP 231106Z AUTO VRB03KT 1SM BR SCT001 OVC008 A3022 RMK AO2 VIS 1/2V3 TSNO $ |
| 02:56 PST |  Overcast Fog | N/A | N/A | N/A | 1023 mb (30.21 in) | SSW 13 kph (SSW 8.1 mph) | - | 1/2SM |
| | KSMP 231056Z AUTO 24007KT 190V250 1/2SM FG BKN001 BKN009 OVC015 A3022 RMK AO2 SLPNO TSNO $ |
| 02:48 PST |  Overcast Fog | N/A | N/A | N/A | 1023 mb (30.21 in) | Variable 7 kph (Variable 4.6 mph) | - | 1/4SM |
| | KSMP 231048Z AUTO VRB04KT 1/4SM FG BKN001 BKN006 OVC011 A3022 RMK AO2 TSNO $ |
| 02:13 PST |  Overcast Fog | N/A | N/A | N/A | 1023 mb (30.21 in) | Variable 9 kph (Variable 5.8 mph) | - | 1/4SM |
| | KSMP 231013Z AUTO VRB05KT 1/4SM FG SCT001 OVC006 A3021 RMK AO2 TSNO $ |
| 01:56 PST |  Overcast Fog | N/A | N/A | N/A | 1023 mb (30.21 in) | Variable 11 kph (Variable 6.9 mph) | - | 1/2SM |
| | KSMP 230956Z AUTO VRB06KT 1/2SM FG BKN001 OVC008 A3020 RMK AO2 SLPNO TSNO $ |
| 01:11 PST |  Overcast Fog | N/A | N/A | N/A | 1023 mb (30.21 in) | Variable 7 kph (Variable 4.6 mph) | - | 1/4SM |
| | KSMP 230911Z AUTO VRB04KT 1/4SM FG BKN001 OVC006 A3020 RMK AO2 TSNO $ |
| 00:56 PST |  Overcast Fog | N/A | N/A | N/A | 1023 mb (30.21 in) | Variable 9 kph (Variable 5.8 mph) | - | 1/2SM |
| | KSMP 230856Z AUTO VRB05KT 1/2SM FG BKN001 OVC006 A3020 RMK AO2 SLPNO 60023 51015 TSNO $ |