Tropical moisture from Cyclone Marie is expected to bring showers and possible thunderstorms to Pasadena on Sunday, forecasters with the National Weather Service Los Angeles/Oxnard said early Friday. Temperatures will remain in the mid-80s, with humidity rising through the holiday weekend.
Sunny skies and a high near 86 degrees are forecast for Friday, with southeast winds shifting to the south-southwest at 5 to 10 mph. Tonight will be mostly clear, with lows around 62.
Saturday will be dry and sunny, reaching 88 degrees. Clouds will increase Saturday night, and forecasters report a 20 percent chance of showers after 11:00 p.m. Lows will hold near 64.
Rain chances peak Sunday, with a 50 percent chance of showers and thunderstorms after 11:00 a.m. Highs will reach 84. Rainfall amounts are expected between one-tenth and one-quarter of an inch, though heavier totals are possible in thunderstorms.
Daytime highs will remain steady in the mid-80s to low 90s through the forecast period, while overnight lows stay in the low-to-mid 60s. A warming trend is expected by Tuesday and Wednesday, with highs climbing into the low 90s.
Forecasters say tropical moisture interacting with a trough along the West Coast will drive Sunday’s showers. While most rain will be light to moderate, there is a small chance of heavier downpours producing localized flooding.
Winds will remain light, shifting between southeast and southwest, with occasional breezes in the afternoons. Increased cloud cover Sunday may weaken typical wind patterns.
Labor Day will be sunny with highs near 88. By midweek, temperatures are expected to rise into the low 90s, with a slight chance of showers Wednesday night.
No advisories are in effect for Pasadena, though NWS warns of hazardous surf and rip currents along Southern California beaches due to Marie’s offshore swell. Pasadena residents traveling to the coast should exercise caution.
In summary, Pasadena will see sunny skies through Saturday before tropical moisture brings showers and possible thunderstorms Sunday. Temperatures will remain seasonable, with a warming trend expected by midweek.
Here is the Pasadena forecast from the National Weather Service as of 3:42 a.m. Friday:
Today: Sunny, with a high near 86. Southeast wind 5 to 10 mph becoming south southwest in the afternoon.
Tonight: Mostly clear, with a low around 62. South southwest wind 5 to 10 mph becoming east after midnight.
Saturday: Sunny, with a high near 88. South wind around 5 mph.
Saturday Night: A 20 percent chance of showers after 11:00 p.m. Increasing clouds, with a low around 64. South southwest wind around 5 mph becoming north northeast after midnight.
Sunday: A chance of showers, with thunderstorms also possible after 11:00 a.m. Mostly cloudy, with a high near 84. North wind around 5 mph becoming south in the morning. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night: Partly cloudy, with a low around 64.
Labor Day: Sunny, with a high near 88.
Monday Night: Mostly clear, with a low around 64.
Tuesday: Mostly sunny, with a high near 92.
Tuesday Night: Partly cloudy, with a low around 66.
Wednesday: Mostly sunny, with a high near 93.
Wednesday Night: A slight chance of showers. Partly cloudy, with a low around 67.
Thursday: Sunny, with a high near 92.
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