Weather & Tides-August 15, 2025

NATIONAL WEATHER SERVICE REPORT 

Friday, August 15th, 2025

SYNOPSIS: Warm weather will continue to rapidly decline as gusty northwest winds help pull in cooler marine air Friday. Cool weather will continue this weekend with midlevel clouds and possibly even wetting rain for the northern half of the area.

TODAY: 

Inland: Sunny, with a high near 89. North northwest wind 10 to 14 mph, with gusts as high as 20 mph.

Along the Coast: Mostly cloudy, with a high near 64. North northwest wind 5 to 7 mph.

TONIGHT:  

Inland: Increasing clouds, with a low around 60. North wind 5 to 11 mph.

Along the Coast: A 40 percent chance of rain, mainly after 11pm. Patchy fog between 8pm and 11pm. Otherwise, cloudy, with a low around 58. Northwest wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible. 

Extended Forecast: A deep trough moving into the Pacific Northwest is bringing cooler weather, more clouds, and gusty northwest winds to Northern California, especially along coastal ridges and west-facing interior slopes. Interior highs will dip below 90°F, while the coast stays cool and moist under a deepening marine layer. This weekend, a moisture plume similar to an atmospheric river could bring light to moderate rain—most likely along the far north coast and the higher terrain of Trinity County, where there’s also a chance of wet thunderstorms. Rain chances drop sharply farther south, with little to no meaningful precipitation expected for the southern half of the region.

Predicted Temperatures

Location	High Today	Low Tonight	HighTomorrow
Inland	89	60	88
Along The Coast	64	58	65

The coastal waters forecast from Point Saint George to Cape Mendocino and out to 10 nautical miles.

Today	Wind	NW 5 kt.
	Waves	NW 4 ft at 6 seconds and SW 2 ft at 14 seconds. A slight chance of patchy dense fog.
Tonight	Wind	S 5 kt.
	Waves	NW 2 ft at 7 seconds and SW 2 ft at 14 seconds. Patchy dense fog. A chance of rain.

The coastal waters forecast from Cape Mendocino to Point Arena and out to 10 nautical miles. 

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

Today	Wind	NW 20 to 25 kt.
	Waves	N 6 ft at 6 seconds and SW 2 ft at 15 seconds.
Tonight	Wind	NW 15 to 20 kt.
	Waves	NW 5 ft at 6 seconds and SW 2 ft at 14 seconds.

Lastly, here are the solar and lunar phases and tidal information : Today, Friday, August 15th, the sun rose in Shelter Cove at 6:28am and the sunset will be at 8:11pm, for a total of 13 hours and 42 minutes of sunlight. The next high tide will be at 4:20 pm, at 6.4ft. The next low tide at 11:41 pm, at  .4ft. Today we begin the day with the waning gibbous moon already visible in the sky, so first we will see the moonset, which will take place at 1:55 pm in the northwest. Eventually, the moon will rise again in the northeast at 11:35 pm. According to the solunar theory, today is a good day for fishing, the fish activity forecast is high.