Pasadena will remain cooler than normal through Friday before tropical moisture raises humidity and brings chances of showers over the Labor Day weekend, according to National Weather Service forecasters.
Today’s forecast calls for sunny skies and a high near 85 degrees, with east-southeast winds shifting southwest at 5 to 10 mph in the afternoon. Tonight will be mostly clear, with a low around 59 degrees and calm winds after midnight.
Friday will be similar, with sunny skies and a high near 86 degrees. Light south winds of 5 to 10 mph are expected. Friday night will be mostly clear, with lows near 62 degrees and winds shifting east.
Temperatures will trend slightly upward Saturday, reaching 88 degrees under sunny skies. Humidity will increase as tropical moisture linked to Hurricane Marie moves into Southern California. A 30 percent chance of showers enters the forecast Saturday night after 11:00 p.m.
Sunday carries the highest precipitation chances, with a 50 percent chance of showers and thunderstorms after 11:00 a.m. Highs will reach near 83 degrees under mostly cloudy skies. Patchy morning fog is also possible. Light showers may linger Sunday night, with lows around 62 degrees.
Labor Day will be mostly sunny, with highs near 88 degrees and only a slight chance of showers. Similar conditions continue Tuesday and Wednesday, with highs near 89 degrees and minimal rain chances.
Winds will remain light, generally 5 to 10 mph, shifting direction daily. Breezy onshore flow may occur at times, but no advisories are currently in effect for Pasadena. Hazardous surf conditions are expected along Southern California beaches due to increasing southerly swells, though Pasadena itself will not be directly impacted.
Locally, residents should anticipate humid conditions and scattered showers that could affect outdoor plans during the holiday weekend. Parks, recreational areas, and community events may see brief interruptions, especially Sunday.
Looking ahead, forecasters say light showers may persist into midweek, with highs near 89 degrees Wednesday. Longer-range models show uncertainty, with some predicting cooler, breezy conditions and others pointing to warmer, more humid weather.
In summary, Pasadena residents can expect mild, sunny days through Friday before humidity rises and showers move in over the holiday weekend. Forecasters advise monitoring updates as tropical moisture influences the region.
Here is the Pasadena forecast from the National Weather Service as of 3:39 a.m. Thursday:
Today: Sunny, with a high near 85. East southeast wind 5 to 10 mph becoming south southwest in the afternoon.
Tonight: Mostly clear, with a low around 59. Southwest wind around 5 mph becoming calm after midnight.
Friday: Sunny, with a high near 86. South wind 5 to 10 mph.
Friday Night: Mostly clear, with a low around 62. South southwest wind 5 to 10 mph becoming east in the evening.
Saturday: Sunny, with a high near 88. South wind around 5 mph.
Saturday Night: A 30 percent chance of showers after 11:00 p.m. Mostly cloudy, with a low around 63.
Sunday: A 50 percent chance of showers and thunderstorms after 11:00 a.m. Patchy fog before 11:00 a.m. Otherwise, mostly cloudy, with a high near 83.
Sunday Night: A slight chance of showers. Partly cloudy, with a low around 62.
Labor Day: A slight chance of showers. Mostly sunny, with a high near 88.
Monday Night: A slight chance of showers. Partly cloudy, with a low around 63.
Tuesday: A slight chance of showers. Mostly sunny, with a high near 89.
Tuesday Night: A slight chance of showers. Partly cloudy, with a low around 64.
Wednesday: A slight chance of showers. Mostly sunny, with a high near 89.
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