| 17:53 PST |  Clear | 3°C / 37°F | -3°C / 27°F | 65% | 1020 mb (30.12 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KSFF 280153Z 28003KT 10SM CLR 03/M03 A3013 RMK AO2 SLP215 T00281028 |
| 16:53 PST |  Clear | 4°C / 39°F | -2°C / 28°F | 65% | 1020 mb (30.12 in) | WNW 7 kph (WNW 4.6 mph) | - | 10SM |
| | KSFF 280053Z 29004KT 10SM CLR 04/M02 A3011 RMK AO2 SLP206 T00391017 |
| 15:53 PST |  Clear | 6°C / 43°F | -2°C / 28°F | 57% | 1018 mb (30.06 in) | WNW 7 kph (WNW 4.6 mph) | - | 10SM |
| | KSFF 272353Z 29004KT 10SM CLR 06/M02 A3007 RMK AO2 SLP191 T00611017 10072 20039 53026 |
| 14:53 PST |  Clear | 7°C / 45°F | -1°C / 30°F | 57% | 1018 mb (30.06 in) | NW 9 kph (NW 5.8 mph) | - | 10SM |
| | KSFF 272253Z 32005KT 10SM CLR 07/M01 A3005 RMK AO2 SLP181 T00721006 |
| 13:53 PST |  Partly Cloudy | 7°C / 45°F | 2°C / 36°F | 71% | 1017 mb (30.03 in) | NNW 13 kph (NNW 8.1 mph) | - | 10SM |
| | KSFF 272153Z 33007KT 300V360 10SM FEW015 07/02 A3002 RMK AO2 SLP170 T00720017 |
| 12:53 PST |  Partly Cloudy | 6°C / 43°F | 2°C / 36°F | 76% | 1016 mb (30 in) | Calm | - | 10SM |
| | KSFF 272053Z 00000KT 10SM SCT012 06/02 A2999 RMK AO2 SLP163 T00610017 51016 |
| 11:53 PST |  Partly Cloudy | 5°C / 41°F | 2°C / 36°F | 81% | 1015 mb (29.97 in) | SSW 11 kph (SSW 6.9 mph) | - | 10SM |
| | KSFF 271953Z 26006KT 10SM SCT009 05/02 A2998 RMK AO2 SLP160 T00500022 |
| 10:53 PST |  Partly Cloudy | 5°C / 41°F | 3°C / 37°F | 87% | 1015 mb (29.97 in) | WNW 9 kph (WNW 5.8 mph) | - | 10SM |
| | KSFF 271853Z 29005KT 10SM SCT007 05/03 A2996 RMK AO2 SLP155 T00500028 |
| 09:53 PST |  Overcast | 4°C / 39°F | 3°C / 37°F | 93% | 1014 mb (29.94 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KSFF 271753Z 25004KT 10SM BKN005 BKN025 OVC035 04/03 A2994 RMK AO2 SLP148 60017 T00390028 10056 20039 53012 |
| 09:00 PST |  Overcast | 4°C / 39°F | 2°C / 36°F | 87% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KSFF 271700Z 00000KT 10SM BKN005 BKN025 OVC035 04/02 A2992 RMK AO2 |
| 08:53 PST |  Overcast | 4°C / 39°F | 2°C / 36°F | 87% | 1013 mb (29.91 in) | Calm | - | 10SM |
| | KSFF 271653Z 00000KT 10SM SCT005 BKN025 OVC042 04/02 A2992 RMK AO2 SLP141 T00440022 |
| 07:53 PST |  Overcast Fog And Mist | 4°C / 39°F | 2°C / 36°F | 87% | 1013 mb (29.91 in) | NNW 9 kph (NNW 5.8 mph) | 0.25 mm (0.01 in) | 4SM |
| | KSFF 271553Z 34005KT 4SM BR BKN005 BKN025 OVC030 04/02 A2990 RMK AO2 RAE23 SLP135 P0001 T00390022 |
| 06:53 PST |  Overcast Light Rain | 4°C / 39°F | 3°C / 37°F | 93% | 1012 mb (29.88 in) | NNW 9 kph (NNW 5.8 mph) | 2.03 mm (0.08 in) | 7SM |
| | KSFF 271453Z 33005KT 7SM -RA FEW009 OVC021 04/03 A2988 RMK AO2 SLP125 P0008 60016 T00440028 53008 |
| 06:20 PST |  Overcast Light Rain | 5°C / 41°F | 3°C / 37°F | 87% | 1011 mb (29.85 in) | N 6 kph (N 3.5 mph) | 1.27 mm (0.05 in) | 5SM |
| | KSFF 271420Z 36003KT 5SM -RA BR OVC009 05/03 A2986 RMK AO2 P0005 |
| 06:12 PST |  Overcast Light Rain | 5°C / 41°F | 3°C / 37°F | 87% | 1012 mb (29.88 in) | N 7 kph (N 4.6 mph) | 1.02 mm (0.04 in) | 4SM |
| | KSFF 271412Z 36004KT 4SM -RA BR OVC010 05/03 A2987 RMK AO2 CIG 008V014 P0004 |
| 05:53 PST |  Overcast Light Rain | 5°C / 41°F | 3°C / 37°F | 87% | 1011 mb (29.85 in) | Variable 6 kph (Variable 3.5 mph) | 1.27 mm (0.05 in) | 4SM |
| | KSFF 271353Z VRB03KT 4SM -RA BR OVC008 05/03 A2986 RMK AO2 CIG 007V012 SLP120 P0005 T00500033 |
| 05:45 PST |  Overcast Light Rain | 5°C / 41°F | 3°C / 37°F | 87% | 1011 mb (29.85 in) | Calm | 1.02 mm (0.04 in) | 4SM |
| | KSFF 271345Z 00000KT 4SM -RA BR BKN008 OVC022 05/03 A2986 RMK AO2 CIG 007V012 P0004 |
| 05:34 PST |  Overcast Light Rain | 5°C / 41°F | 3°C / 37°F | 87% | 1011 mb (29.85 in) | Calm | 0.76 mm (0.03 in) | 4SM |
| | KSFF 271334Z AUTO 00000KT 4SM -RA BR BKN010 OVC024 05/03 A2986 RMK AO2 CIG 007V011 P0003 |
| 05:19 PST |  Overcast Light Rain | 6°C / 43°F | 4°C / 39°F | 87% | 1011 mb (29.85 in) | Calm | 0.51 mm (0.02 in) | 4SM |
| | KSFF 271319Z AUTO 00000KT 4SM -RA BR SCT010 OVC024 06/04 A2986 RMK AO2 P0002 |
| 05:02 PST |  Overcast Light Rain | 6°C / 43°F | 4°C / 39°F | 87% | 1011 mb (29.85 in) | Calm | 0.25 mm (0.01 in) | 4SM |
| | KSFF 271302Z AUTO 00000KT 4SM -RA BR SCT006 BKN013 OVC028 06/04 A2986 RMK AO2 P0001 |
| 04:53 PST |  Overcast Light Rain | 5°C / 41°F | 4°C / 39°F | 93% | 1011 mb (29.85 in) | Calm | 0.76 mm (0.03 in) | 3SM |
| | KSFF 271253Z AUTO 00000KT 3SM -RA BR BKN008 BKN015 OVC030 05/04 A2986 RMK AO2 CIG 005V009 SLP119 P0003 T00500039 |
| 04:46 PST |  Overcast Light Rain | 5°C / 41°F | 4°C / 39°F | 93% | 1011 mb (29.85 in) | Calm | 0.76 mm (0.03 in) | 2 1/2SM |
| | KSFF 271246Z AUTO 00000KT 2 1/2SM -RA BR BKN008 OVC015 05/04 A2986 RMK AO2 CIG 006V011 P0003 |
| 04:39 PST |  Overcast Light Rain | 6°C / 43°F | 4°C / 39°F | 87% | 1011 mb (29.85 in) | Calm | 0.51 mm (0.02 in) | 2 1/2SM |
| | KSFF 271239Z AUTO 00000KT 2 1/2SM -RA BR SCT008 OVC017 06/04 A2986 RMK AO2 P0002 |
| 03:53 PST |  Overcast Light Rain | 6°C / 43°F | 4°C / 39°F | 87% | 1011 mb (29.85 in) | Calm | 1.78 mm (0.07 in) | 5SM |
| | KSFF 271153Z AUTO 00000KT 5SM -RA BR FEW022 BKN026 OVC044 06/04 A2985 RMK AO2 SLP115 P0007 60024 70032 T00560039 10056 20050 56009 |
| 03:48 PST |  Overcast Light Rain | 6°C / 43°F | 4°C / 39°F | 87% | 1011 mb (29.85 in) | Calm | 1.78 mm (0.07 in) | 4SM |
| | KSFF 271148Z AUTO 00000KT 4SM -RA BR BKN026 BKN033 OVC044 06/04 A2986 RMK AO2 P0007 |
| 03:31 PST |  Overcast Light Rain | 6°C / 43°F | 4°C / 39°F | 87% | 1011 mb (29.85 in) | Calm | 1.52 mm (0.06 in) | 3SM |
| | KSFF 271131Z AUTO 00000KT 3SM -RA BR SCT024 BKN031 OVC046 06/04 A2986 RMK AO2 P0006 |
| 03:17 PST |  Overcast Light Rain | 5°C / 41°F | 4°C / 39°F | 93% | 1011 mb (29.85 in) | Calm | 1.02 mm (0.04 in) | 2SM |
| | KSFF 271117Z AUTO 00000KT 2SM -RA BR BKN026 OVC032 05/04 A2986 RMK AO2 P0004 |
| 02:53 PST |  Overcast Light Rain | 5°C / 41°F | 4°C / 39°F | 93% | 1012 mb (29.88 in) | Calm | 1.02 mm (0.04 in) | 4SM |
| | KSFF 271053Z AUTO 00000KT 4SM -RA BR FEW003 BKN028 OVC035 05/04 A2987 RMK AO2 SLP122 P0004 T00500039 |
| 02:21 PST |  Overcast Light Rain | 5°C / 41°F | 4°C / 39°F | 93% | 1012 mb (29.88 in) | Calm | 0.25 mm (0.01 in) | 5SM |
| | KSFF 271021Z AUTO 00000KT 5SM -RA BR SCT003 OVC030 05/04 A2988 RMK AO2 P0001 |
| 01:53 PST |  Overcast Light Rain | 6°C / 43°F | 4°C / 39°F | 87% | 1012 mb (29.88 in) | Calm | 0.25 mm (0.01 in) | 5SM |
| | KSFF 270953Z AUTO 00000KT 5SM -RA BR BKN003 OVC036 06/04 A2988 RMK AO2 SLP125 P0001 T00560039 |
| 01:40 PST |  Overcast Light Rain | 5°C / 41°F | 4°C / 39°F | 93% | 1012 mb (29.88 in) | Calm | 0.25 mm (0.01 in) | 6SM |
| | KSFF 270940Z AUTO 00000KT 6SM -RA BR SCT003 OVC036 05/04 A2988 RMK AO2 P0001 |
| 00:53 PST |  Overcast Light Rain | 6°C / 43°F | 4°C / 39°F | 87% | 1012 mb (29.88 in) | Calm | 1.02 mm (0.04 in) | 3SM |
| | KSFF 270853Z AUTO 00000KT 3SM -RA BR BKN003 OVC031 06/04 A2989 RMK AO2 SLP128 P0004 60012 T00560039 58009 |
| 00:19 PST |  Overcast Light Rain | 5°C / 41°F | 4°C / 39°F | 93% | 1013 mb (29.91 in) | Calm | 0.51 mm (0.02 in) | 3SM |
| | KSFF 270819Z AUTO 00000KT 3SM -RA BR BKN003 BKN028 OVC042 05/04 A2990 RMK AO2 P0002 |
| 00:05 PST |  Overcast Light Rain | 5°C / 41°F | 4°C / 39°F | 93% | 1013 mb (29.91 in) | Calm | 0.25 mm (0.01 in) | 4SM |
| | KSFF 270805Z AUTO 00000KT 4SM -RA BR FEW003 BKN034 OVC043 05/04 A2990 RMK AO2 P0001 |