Thursday, December 4th, 2025
SYNOPSIS: High pressure continues to build over the area, bringing offshore flow and generally fair skies through Thursday along with night and morning valley fog. Light rain is possible mainly in Humboldt and Del Norte counties over the weekend. King Tides from December 3rd to the 7th may lead to minor coastal flooding in low-lying areas mainly around Humboldt Bay.
TODAY:
Inland: Mostly sunny, with a high near 65. Calm wind.
Along the Coast: Mostly sunny, with a high near 59. Northeast wind 5 to 8 mph becoming calm in the morning.
TONIGHT:
Inland: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 38. Light north northeast wind.
Along the Coast: Partly cloudy, with a low around 51. North wind 3 to 7 mph.
Extended Forecast: High pressure is causing dry offshore winds that will continue through Thursday morning before easing later in the day. As winds calm overnight, cold air will settle in, bringing frost to inland valleys—especially in Humboldt and Mendocino Counties. By Thursday night into Friday, a weak weather system will move in, adding clouds and keeping nighttime temperatures slightly warmer. Light rain may arrive Friday and continue through the weekend, mainly affecting Del Norte and far northern Humboldt Counties, with only minor rainfall further south.
Predicted Temperatures
| Location | High Today | Low Tonight | HighTomorrow |
| Inland | 65 | 38 | 64 |
| Along The Coast | 59 | 51 | 59 |
The coastal waters forecast from Point Saint George to Cape Mendocino and out to 10 nautical miles.
| Today | Wind | N 10 to 15 kt. |
| Waves | N 5 ft at 6 seconds and W 4 ft at 12 seconds. A slight chance of rain. | |
| Tonight | Wind | N 5 to 10 kt. |
| Waves | N 5 ft at 5 seconds and W 4 ft at 12 seconds. Patchy dense fog. A chance of rain. |
The coastal waters forecast from Cape Mendocino to Point Arena and out to 10 nautical miles.
| Today | Wind | E 5 to 10 kt, becoming NW 10 to 15 kt this afternoon. |
| Waves | N 5 ft at 7 seconds and W 4 ft at 13 seconds. | |
| Tonight | Wind | N 10 to 15 kt. |
| Waves | N 5 ft at 6 seconds and W 3 ft at 13 seconds. |
Lastly, here are the solar and lunar phases and tidal information : Today Thursday, 4th of December of 2025, the sun rose in Shelter Cove at 7:22 am and sunset will be at 4:50 pm, for a total of 9 hours and 28 minutes of sunlight. The next low tide will be at 4:52pm, at -1.9ft. The next high tide will be at 11:43pm tonight at 5.1ft. The moon set at 7:20 am in the northwest. Eventually, the Supermoon will rise again in the northeast at 4:25 pm. According to the solunar theory, today is an excellent day for fishing, the fish activity forecast is very high.