| 03:55 PST |  Overcast Fog And Mist | 8°C / 46°F | 8°C / 46°F | 100% | 1017 mb (30.03 in) | ENE 6 kph (ENE 3.5 mph) | - | 5SM |
| | KRIV 111155Z 06003KT 5SM BR OVC027 08/08 A3002 RMK AO2A SLP172 60002 70002 T00770075 10077 20055 58006 |
| 02:55 PST |  Overcast Fog And Mist | 7°C / 45°F | 7°C / 45°F | 100% | 1017 mb (30.03 in) | Calm | 0.25 mm (0.01 in) | 5SM |
| | KRIV 111055Z 00000KT 5SM BR BKN029 OVC050 07/07 A3004 RMK AO2A SLP180 P0001 T00740073 |
| 02:40 PST |  Overcast Drizzle | 7°C / 45°F | 7°C / 45°F | 100% | 1017 mb (30.03 in) | Calm | - | 5SM |
| | KRIV 111040Z 00000KT 5SM -DZ BR BKN029 OVC050 07/07 A3004 RMK AO2A SLP178 |
| 02:34 PST |  Overcast Fog And Mist | 7°C / 45°F | 7°C / 45°F | 100% | 1017 mb (30.03 in) | Calm | - | 5SM |
| | KRIV 111034Z 00000KT 5SM BR BKN034 OVC050 07/07 A3004 RMK AO2A SLP176 |
| 01:55 PST |  Mostly Cloudy Drizzle | 8°C / 46°F | 7°C / 45°F | 93% | 1017 mb (30.03 in) | Calm | 0.25 mm (0.01 in) | 7SM |
| | KRIV 110955Z 00000KT 7SM -DZ FEW029 BKN065 08/07 A3004 RMK AO2A SLP176 P0001 T00750071 |
| 01:28 PST |  Overcast Light Rain | 7°C / 45°F | 6°C / 43°F | 93% | 1017 mb (30.03 in) | Calm | - | 8SM |
| | KRIV 110928Z 00000KT 8SM -RA BKN029 OVC040 07/06 A3004 RMK AO2A SLP176 |
| 01:15 PST |  Overcast Light Rain | 7°C / 45°F | 6°C / 43°F | 93% | 1018 mb (30.06 in) | W 9 kph (W 5.8 mph) | - | 8SM |
| | KRIV 110915Z 28005KT 8SM -RA BKN034 OVC040 07/06 A3005 RMK AO2A SLP180 |
| 01:11 PST |  Overcast Light Rain | 7°C / 45°F | 6°C / 43°F | 93% | 1018 mb (30.06 in) | W 6 kph (W 3.5 mph) | - | 8SM |
| | KRIV 110911Z 27003KT 8SM -RA OVC042 07/06 A3005 RMK AO2A SLP179 |
| 01:05 PST |  Mostly Cloudy Unknown Precip | 7°C / 45°F | 6°C / 43°F | 93% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KRIV 110905Z AUTO 00000KT 10SM UP SCT035 BKN065 07/06 A3004 RMK AO2 UPB0905 CIG 039 RWY14 SLP177 |
| 00:55 PST |  Overcast | 7°C / 45°F | 5°C / 41°F | 87% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KRIV 110855Z AUTO 00000KT 10SM OVC046 07/05 A3004 RMK AO2 CIG 038 RWY14 SLP178 T00690054 58007 |