| 22:00 PST |  Overcast | 5°C / 41°F | 2°C / 36°F | 81% | 1027 mb (30.33 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KBFI 230600Z 14003KT 10SM SCT021 BKN027 OVC046 05/02 A3034 RMK AO2 |
| 21:53 PST |  Overcast | 4°C / 39°F | 2°C / 36°F | 87% | 1027 mb (30.33 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KBFI 230553Z 14003KT 10SM FEW025 OVC050 04/02 A3034 RMK AO2 SLP273 T00440017 10056 20044 51013 |
| 20:53 PST |  Overcast | 5°C / 41°F | 2°C / 36°F | 81% | 1027 mb (30.33 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KBFI 230453Z 12003KT 10SM FEW025 OVC050 05/02 A3033 RMK AO2 SLP270 T00500017 |
| 19:53 PST |  Overcast | 5°C / 41°F | 2°C / 36°F | 81% | 1027 mb (30.33 in) | Calm | - | 10SM |
| | KBFI 230353Z 00000KT 10SM OVC048 05/02 A3032 RMK AO2 SLP265 T00500017 |
| 18:53 PST |  Overcast | 5°C / 41°F | 2°C / 36°F | 81% | 1026 mb (30.3 in) | ESE 6 kph (ESE 3.5 mph) | - | 10SM |
| | KBFI 230253Z 11003KT 10SM BKN037 OVC047 05/02 A3030 RMK AO2 SLP260 T00500022 51018 |
| 17:53 PST |  Overcast | 6°C / 43°F | 2°C / 36°F | 76% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KBFI 230153Z 00000KT 10SM FEW010 OVC040 06/02 A3028 RMK AO2 SLP254 T00560017 |
| 16:53 PST |  Overcast | 5°C / 41°F | 2°C / 36°F | 81% | 1025 mb (30.27 in) | Calm | - | 10SM |
| | KBFI 230053Z 00000KT 10SM OVC048 05/02 A3027 RMK AO2 SLP251 T00500017 |
| 15:53 PST |  Overcast | 5°C / 41°F | 2°C / 36°F | 81% | 1024 mb (30.24 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KBFI 222353Z 13003KT 10SM OVC048 05/02 A3025 RMK AO2 SLP241 T00500017 10056 20039 53019 |
| 14:53 PST |  Overcast | 5°C / 41°F | 2°C / 36°F | 81% | 1023 mb (30.21 in) | SSE 6 kph (SSE 3.5 mph) | - | 10SM |
| | KBFI 222253Z AUTO 15003KT 10SM OVC042 05/02 A3022 RMK AO2 SLP232 T00500017 |
| 13:53 PST |  Overcast | 5°C / 41°F | 2°C / 36°F | 81% | 1023 mb (30.21 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KBFI 222153Z 13004KT 10SM SCT024 OVC032 05/02 A3021 RMK AO2 SLP229 T00500017 |
| 13:00 PST |  Overcast | 5°C / 41°F | 1°C / 34°F | 76% | 1022 mb (30.18 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KBFI 222100Z 14003KT 10SM SCT020 BKN026 OVC034 05/01 A3019 RMK AO2 |
| 12:53 PST |  Overcast | 5°C / 41°F | 2°C / 36°F | 81% | 1022 mb (30.18 in) | Calm | - | 10SM |
| | KBFI 222053Z 00000KT 10SM SCT016 OVC044 05/02 A3019 RMK AO2 SLP222 T00500017 52015 |
| 11:53 PST |  Overcast | 5°C / 41°F | 2°C / 36°F | 81% | 1022 mb (30.18 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KBFI 221953Z 13003KT 10SM SCT016 OVC044 05/02 A3018 RMK AO2 SLP218 T00500017 |
| 10:53 PST |  Overcast | 4°C / 39°F | 2°C / 36°F | 87% | 1021 mb (30.15 in) | SE 7 kph (SE 4.6 mph) | - | 10SM |
| | KBFI 221853Z 14004KT 10SM SCT041 OVC050 04/02 A3016 RMK AO2 SLP211 T00440022 |
| 09:53 PST |  Overcast | 4°C / 39°F | 2°C / 36°F | 87% | 1021 mb (30.15 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KBFI 221753Z 13003KT 10SM BKN042 OVC050 04/02 A3014 RMK AO2 SLP207 60003 T00390017 10039 20022 51039 |
| 08:53 PST |  Overcast | 3°C / 37°F | 2°C / 36°F | 93% | 1020 mb (30.12 in) | Calm | 0.00 mm (0.00 in) | 10SM |
| | KBFI 221653Z 00000KT 10SM SCT015 BKN041 OVC050 03/02 A3011 RMK AO2 RAB01E45 SLP196 P0000 T00330017 |
| 07:53 PST |  Overcast | 3°C / 37°F | 1°C / 34°F | 87% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KBFI 221553Z 00000KT 10SM SCT021 BKN026 OVC035 03/01 A3007 RMK AO2 SLP182 T00330011 |
| 06:57 PST |  Overcast | 3°C / 37°F | 1°C / 34°F | 87% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KBFI 221457Z 00000KT 10SM SCT016 OVC032 03/01 A3003 RMK AO2 |
| 06:53 PST |  Mostly Cloudy | 3°C / 37°F | 1°C / 34°F | 87% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KBFI 221453Z 00000KT 10SM BKN016 BKN034 03/01 A3003 RMK AO2 SLP168 60003 T00280011 53029 |
| 05:53 PST |  Partly Cloudy | 3°C / 37°F | 1°C / 34°F | 87% | 1016 mb (30 in) | Calm | - | 10SM |
| | KBFI 221353Z 00000KT 10SM SCT013 SCT048 03/01 A3000 RMK AO2 SLP157 T00330011 |
| 05:07 PST |  Overcast | 3°C / 37°F | 1°C / 34°F | 87% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KBFI 221307Z 00000KT 10SM FEW009 SCT016 OVC050 03/01 A2997 RMK AO2 |
| 05:01 PST |  Overcast | 3°C / 37°F | 1°C / 34°F | 87% | 1015 mb (29.97 in) | SE 6 kph (SE 3.5 mph) | - | 10SM |
| | KBFI 221301Z 13003KT 10SM SCT011 BKN016 OVC050 03/01 A2997 RMK AO2 |
| 04:53 PST |  Overcast | 3°C / 37°F | 2°C / 36°F | 93% | 1015 mb (29.97 in) | SE 7 kph (SE 4.6 mph) | 0.76 mm (0.03 in) | 10SM |
| | KBFI 221253Z 14004KT 10SM BKN013 OVC050 03/02 A2997 RMK AO2 RAE50 SLP147 P0003 T00330017 |
| 04:33 PST |  Overcast Light Rain | 3°C / 37°F | 2°C / 36°F | 93% | 1015 mb (29.97 in) | Calm | 0.76 mm (0.03 in) | 8SM |
| | KBFI 221233Z 00000KT 8SM -RA OVC013 03/02 A2996 RMK AO2 P0003 |
| 04:01 PST |  Overcast Rain | 3°C / 37°F | 1°C / 34°F | 87% | 1014 mb (29.94 in) | Calm | 0.25 mm (0.01 in) | 4SM |
| | KBFI 221201Z 00000KT 4SM RA BR OVC015 03/01 A2994 RMK AO2 P0001 |
| 03:53 PST |  Overcast Light Rain | 3°C / 37°F | 2°C / 36°F | 93% | 1014 mb (29.94 in) | Calm | 1.78 mm (0.07 in) | 4SM |
| | KBFI 221153Z 00000KT 4SM -RA BR BKN013 OVC019 03/02 A2994 RMK AO2 SLP139 P0007 60008 70036 T00330017 10050 20033 53028 |
| 03:40 PST |  Overcast Light Rain | 3°C / 37°F | 2°C / 36°F | 93% | 1014 mb (29.94 in) | Calm | 1.27 mm (0.05 in) | 7SM |
| | KBFI 221140Z 00000KT 7SM -RA BKN013 OVC022 03/02 A2993 RMK AO2 P0005 |
| 02:53 PST |  Overcast Light Rain | 4°C / 39°F | 1°C / 34°F | 81% | 1013 mb (29.91 in) | SE 11 kph (SE 6.9 mph) | 0.25 mm (0.01 in) | 7SM |
| | KBFI 221053Z 13006KT 7SM -RA BKN017 OVC023 04/01 A2992 RMK AO2 RAB25 SLP129 P0001 T00390011 |
| 01:53 PST |  Overcast | 4°C / 39°F | 1°C / 34°F | 81% | 1012 mb (29.88 in) | SE 11 kph (SE 6.9 mph) | 0.00 mm (0.00 in) | 10SM |
| | KBFI 220953Z 13006KT 10SM SCT018 BKN027 OVC034 04/01 A2988 RMK AO2 RAB26E35 SLP118 P0000 T00390011 |
| 00:53 PST |  Overcast | 4°C / 39°F | 1°C / 34°F | 81% | 1011 mb (29.85 in) | SSE 13 kph (SSE 8.1 mph) | - | 10SM |
| | KBFI 220853Z 20007KT 10SM BKN023 OVC027 04/01 A2986 RMK AO2 SLP110 T00440006 53012 |