NATIONAL WEATHER SERVICE REPORT 8-22-25
NATIONAL WEATHER SERVICE REPORT
Friday, August 22nd, 2025
SYNOPSIS: Hot and very dry weather will begin to peak today with
a strengthening, shallow marine layer near shore. There is slight
potential for thunderstorms over the interior late this weekend into
early next week.
TODAY:
Inland: Sunny and hot, with a high near 100. Light and variable wind.
Along the Coast: Mostly sunny, with a high near 77. Light and variable wind
TONIGHT:
Inland: Mostly cloudy, with a low around 57. West wind around 5 mph becoming calm in the evening.
Along the Coast: Partly cloudy, with a low around 60. Light and variable wind.
Extended Forecast: A high pressure system will bring very hot temperatures today, with inland valleys reaching 104-108°F, creating moderate to major heat risk especially around the Trinity River Valley and Clear Lake area. The heat will continue through Tuesday with warm overnight temperatures in the mid-60s, though it will cool slightly on Sunday while humidity increases. Coastal areas will stay cooler due to marine layer clouds and onshore winds that prevent the heat from reaching the coast. By early next week, the high pressure will weaken and allow some moisture to move in, creating a small chance of mostly dry thunderstorms over mountainous areas, with better chances for actual rain showers later in the week.
Predicted Temperatures
| Location | High Today | Low Tonight | HighTomorrow |
| Inland | 100 | 57 | 99 |
| Along The Coast | 77 | 60 | 74 |
The coastal waters forecast from Point Saint George to Cape Mendocino and out to 10 nautical miles.
SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM PDT EARLY THIS MORNING
| Today | Wind | S 5 kt, veering to NW this afternoon. |
| Waves | NW 5 ft at 7 seconds. Patchy dense fog | |
| Tonight | Wind | N 5 to 10 kt. |
| Waves | NW 4 ft at 7 seconds. Patchy dense fog. |
The coastal waters forecast from Cape Mendocino to Point Arena and out to 10 nautical miles.
SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM PDT THIS MORNING
| Today | Wind | NW 15 to 20 kt. |
| Waves | NW 6 ft at 7 seconds and SW 2 ft at 15 seconds. Patchy dense fog. | |
| Tonight | Wind | N wind 10 to 15 kt. |
| Waves | N 5 ft at 7 seconds and S 2 ft at 15 seconds. Patchy dense fog. |
Lastly, here are the solar and lunar phases and tidal information : Today, Friday August 22nd, the sun rose in Shelter Cove at 6:35am and the sunset will be at 8:01pm, for a total of 13 hours and 26 minutes of sunlight. The next high tide will be at 12:12 pm, at 5.2ft. The following low tide will be at 5:24pm, at 2.4ft. The last high tide will be at 11:19 at 6.6ft. The moon rose in the northeast at 5:50 am and will set in the west at 8:02 pm. According to the solunar theory, today is an excellent day for fishing, the fish activity forecast is very high..
