| 22:53 PST |  Overcast | 7°C / 45°F | 6°C / 43°F | 93% | 1026 mb (30.3 in) | ESE 7 kph (ESE 4.6 mph) | - | 9SM |
| | KPDX 300653Z 11004KT 9SM OVC010 07/06 A3030 RMK AO2 SLP260 T00720061 |
| 21:53 PST |  Overcast | 8°C / 46°F | 7°C / 45°F | 93% | 1026 mb (30.3 in) | Calm | - | 9SM |
| | KPDX 300553Z 00000KT 9SM OVC012 08/07 A3031 RMK AO2 SLP263 T00780067 10100 20056 58004 |
| 20:53 PST |  Overcast | 8°C / 46°F | 7°C / 45°F | 93% | 1027 mb (30.33 in) | Calm | - | 10SM |
| | KPDX 300453Z 00000KT 10SM OVC010 08/07 A3032 RMK AO2 SLP266 T00780067 |
| 19:53 PST |  Overcast | 7°C / 45°F | 6°C / 43°F | 93% | 1027 mb (30.33 in) | W 6 kph (W 3.5 mph) | - | 10SM |
| | KPDX 300353Z 27003KT 10SM OVC012 07/06 A3032 RMK AO2 SLP266 T00720056 |
| 18:53 PST |  Mostly Cloudy | 6°C / 43°F | 4°C / 39°F | 87% | 1027 mb (30.33 in) | SSW 7 kph (SSW 4.6 mph) | - | 10SM |
| | KPDX 300253Z 25004KT 10SM BKN012 06/04 A3032 RMK AO2 SLP268 T00560044 55003 |
| 18:39 PST |  Mostly Cloudy | 6°C / 43°F | 4°C / 39°F | 87% | 1027 mb (30.33 in) | SSW 6 kph (SSW 3.5 mph) | - | 10SM |
| | KPDX 300239Z 26003KT 10SM BKN013 06/04 A3032 RMK AO2 |
| 17:53 PST |  Partly Cloudy | 8°C / 46°F | 6°C / 43°F | 87% | 1026 mb (30.3 in) | Calm | - | 10SM |
| | KPDX 300153Z 00000KT 10SM FEW018 SCT250 08/06 A3031 RMK AO2 SLP265 T00830061 |
| 16:53 PST |  Partly Cloudy | 9°C / 48°F | 6°C / 43°F | 82% | 1027 mb (30.33 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KPDX 300053Z 36003KT 10SM FEW250 09/06 A3033 RMK AO2 SLP268 T00940061 |
| 15:53 PST |  Partly Cloudy | 11°C / 52°F | 6°C / 43°F | 72% | 1027 mb (30.33 in) | NW 9 kph (NW 5.8 mph) | - | 10SM |
| | KPDX 292353Z 30005KT 10SM FEW018 SCT250 11/06 A3033 RMK AO2 SLP270 T01060061 10111 20078 56017 |
| 14:53 PST |  Partly Cloudy | 11°C / 52°F | 6°C / 43°F | 72% | 1027 mb (30.33 in) | NW 7 kph (NW 4.6 mph) | - | 10SM |
| | KPDX 292253Z 30004KT 10SM FEW018 SCT250 11/06 A3034 RMK AO2 SLP275 T01060056 |
| 13:53 PST |  Partly Cloudy | 11°C / 52°F | 6°C / 43°F | 72% | 1028 mb (30.36 in) | NW 9 kph (NW 5.8 mph) | - | 10SM |
| | KPDX 292153Z 31005KT 10SM SCT018 11/06 A3036 RMK AO2 SLP280 T01060056 |
| 12:53 PST |  Mostly Cloudy | 10°C / 50°F | 5°C / 41°F | 71% | 1029 mb (30.39 in) | N 6 kph (N 3.5 mph) | - | 10SM |
| | KPDX 292053Z 36003KT 10SM BKN018 10/05 A3038 RMK AO2 SLP287 T01000050 58016 |
| 11:53 PST |  Overcast | 9°C / 48°F | 5°C / 41°F | 76% | 1029 mb (30.39 in) | Calm | - | 10SM |
| | KPDX 291953Z 00000KT 10SM OVC020 09/05 A3040 RMK AO2 SLP295 T00890050 |
| 10:53 PST |  Overcast | 8°C / 46°F | 5°C / 41°F | 82% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KPDX 291853Z 00000KT 10SM BKN020 OVC050 08/05 A3042 RMK AO2 SLP301 T00830050 |
| 09:53 PST |  Overcast | 8°C / 46°F | 6°C / 43°F | 87% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KPDX 291753Z 00000KT 10SM BKN020 OVC032 08/06 A3043 RMK AO2 SLP303 T00780056 10078 20039 53008 |
| 08:53 PST |  Overcast | 7°C / 45°F | 5°C / 41°F | 87% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KPDX 291653Z 00000KT 10SM OVC022 07/05 A3043 RMK AO2 SLP302 T00720050 |
| 07:53 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1030 mb (30.42 in) | Calm | - | 7SM |
| | KPDX 291553Z 00000KT 7SM BKN026 OVC035 06/05 A3041 RMK AO2 SLP296 T00610050 |
| 07:23 PST |  Overcast | 6°C / 43°F | 4°C / 39°F | 87% | 1030 mb (30.42 in) | Calm | - | 8SM |
| | KPDX 291523Z 00000KT 8SM BKN028 BKN037 OVC045 06/04 A3041 RMK AO2 |
| 06:53 PST |  Mostly Cloudy | 6°C / 43°F | 4°C / 39°F | 87% | 1030 mb (30.42 in) | Calm | - | 9SM |
| | KPDX 291453Z 00000KT 9SM SCT025 BKN031 BKN040 06/04 A3041 RMK AO2 SLP296 T00560044 58003 |
| 06:41 PST |  Mostly Cloudy | 6°C / 43°F | 4°C / 39°F | 87% | 1030 mb (30.42 in) | Calm | - | 9SM |
| | KPDX 291441Z 00000KT 9SM SCT025 BKN031 BKN040 06/04 A3041 RMK AO2 |
| 05:53 PST |  Overcast | 6°C / 43°F | 5°C / 41°F | 93% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KPDX 291353Z 00000KT 10SM OVC025 06/05 A3041 RMK AO2 SLP298 T00610050 |
| 05:12 PST |  Mostly Cloudy | 5°C / 41°F | 4°C / 39°F | 93% | 1030 mb (30.42 in) | WNW 6 kph (WNW 3.5 mph) | - | 9SM |
| | KPDX 291312Z 29003KT 9SM BKN025 05/04 A3042 RMK AO2 |
| 04:53 PST |  Partly Cloudy | 5°C / 41°F | 4°C / 39°F | 93% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KPDX 291253Z 00000KT 10SM FEW025 05/04 A3041 RMK AO2 SLP297 T00500039 |
| 03:53 PST |  Mostly Cloudy | 6°C / 43°F | 4°C / 39°F | 87% | 1030 mb (30.42 in) | SE 6 kph (SE 3.5 mph) | - | 9SM |
| | KPDX 291153Z 13003KT 9SM BKN043 06/04 A3042 RMK AO2 SLP299 T00560044 10078 20050 58002 |
| 02:53 PST |  Overcast | 6°C / 43°F | 4°C / 39°F | 87% | 1031 mb (30.45 in) | Calm | - | 9SM |
| | KPDX 291053Z 00000KT 9SM OVC032 06/04 A3044 RMK AO2 SLP308 T00560044 |
| 01:53 PST |  Mostly Cloudy | 6°C / 43°F | 4°C / 39°F | 87% | 1030 mb (30.42 in) | Calm | - | 10SM |
| | KPDX 290953Z 00000KT 10SM BKN032 06/04 A3043 RMK AO2 SLP304 T00560044 |
| 00:53 PST |  Mostly Cloudy | 6°C / 43°F | 5°C / 41°F | 93% | 1030 mb (30.42 in) | E 7 kph (E 4.6 mph) | - | 10SM |
| | KPDX 290853Z 09004KT 10SM BKN150 06/05 A3042 RMK AO2 SLP301 T00610050 58004 |