Weather & Tides-May 28, 2025
NATIONAL WEATHER SERVICE REPORT
Wednesday, May 28th 2025
SYNOPSIS: Warmer weather will continue through late week. Hot temperatures likely Friday and Saturday for the interior before a quick trend downward next week. Gusty winds possible this weekend and early next week.
In Humboldt and Mendocino Counties, grass pollen counts are high.
TODAY:
Inland: Sunny, with a high near 79. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Along the Coast: Partly sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the afternoon.
TONIGHT:
Inland: Partly cloudy, with a low around 50. North wind around 6 mph becoming calm in the evening.
Along the Coast: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 48. North northwest wind around 5 mph becoming calm in the evening.
Extended Forecast: High pressure has returned to the region, though a weak cutoff low near Southern California may bring isolated showers or lightning to Trinity County. A brief trough on Thursday could increase clouds with only minimal rain chances in far northern areas. A Rex Block, a type of weather setup where a strong high-pressure system (which brings warm, dry, and calm weather) gets “stuck” next to a low-pressure system (which brings cooler, unsettled weather), can block the normal west-to-east flow of weather systems, causing certain conditions—like heat or dryness—to linger longer than usual in one area. Think of it like a traffic jam in the atmosphere that keeps the same kind of weather in place for several days. This pattern sets up Friday and Saturday, leading to a significant early-season heat wave with widespread triple-digit temperatures and elevated HeatRisk. A sharp cooldown is expected late weekend into early next week as a potentially strong upper trough moves in, bringing cooler weather, a chance of precipitation, and strong northerly winds.
Predicted Temperatures
| Location | High Today | Low Tonight | HighTomorrow |
| Inland | 79 | 50 | 83 |
| Along The Coast | 64 | 48 | 66 |
The coastal waters forecast from Point Saint George to Cape Mendocino and out to 10 nautical miles.
| Today | Wind | SW 5 kt, veering to W 5 kt this afternoon. |
| Waves | NW 3 ft at 6 seconds and W 5 ft at 10 seconds. Patchy fog this morning. | |
| Tonight | Wind | E 5 kt. |
| Waves | W 5 ft at 10 seconds. |
The coastal waters forecast from Cape Mendocino to Point Arena and out to 10 nautical miles.
| Today | Wind | NW 5 to 10 kt. |
| Waves | NW 4 ft at 5 seconds and NW 5 ft at 10 seconds. Patchy dense fog this morning. | |
| Tonight | Wind | NW 5 to 10 kt. |
| Waves | NW 4 ft at 5 seconds and W 4 ft at 10 seconds. |
Lastly, here are the solar and lunar phases and tidal information : Today, Wednesday, May 28th, the sun rose in Shelter Cove at 5:51am and sunset will be at 8:37pm, for a total of 14 hours and 46 minutes of sunlight. The next low tide will be at 6:33 pm. The only high tide of the day will be at 2:06 pm.. The waxing crescent moon rose in the northeast at 6:54 am and will set in the northwest at 11:08 pm. According to the solunar theory, today is an excellent day for fishing, the fish activity forecast is very high.
