Pasadena residents will see a brief warm-up Wednesday before cooler temperatures and rain arrive Friday, according to the National Weather Service.
Forecasters said highs will reach near 81 degrees Wednesday under sunny skies before dropping into the low 70s Friday and upper 60s over the weekend. Rain chances begin Friday afternoon and continue through early next week.
On Tuesday, conditions will be sunny with a high near 79 and light southwest winds. Overnight lows will remain in the low to mid-50s through Thursday.
The National Weather Service said Wednesday night will bring increasing clouds, followed by partly sunny skies Thursday with highs near 78.
Rain is expected to begin Friday afternoon with a 20 percent chance of showers. By Friday night, showers and possible thunderstorms are forecast. Rain and thunderstorms are likely Saturday, with highs near 67.
Forecasters said rainfall totals could range from a half inch to one inch, with localized amounts up to 2 to 3 inches in heavier bursts.
Winds will remain light through midweek but may increase during storms, with gusty conditions possible in thunderstorms.
The weekend outlook calls for scattered showers Sunday with highs near 67. Overnight lows will dip into the upper 40s by Sunday night.
No advisories are currently in effect for Pasadena, but forecasters urged residents to monitor updates as the storm approaches.
Looking ahead, Monday is expected to be mostly sunny with highs near 70, marking a gradual return to drier conditions.
Here is the Pasadena forecast from the National Weather Service as of 3:06 a.m. Tuesday:
Today: Sunny, with a high near 79. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight: Clear, with a low around 53. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Wednesday: Sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night: Increasing clouds, with a low around 55. West southwest wind around 5 mph becoming calm in the evening.
Thursday: Partly sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night: Partly cloudy, with a low around 54.
Friday: A 20 percent chance of rain after 11:00 a.m. Partly sunny, with a high near 73.
Friday Night: A chance of rain and thunderstorms. Mostly cloudy, with a low around 54.
Saturday: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 11:00 a.m. Mostly cloudy, with a high near 67.
Saturday Night: A chance of rain. Mostly cloudy, with a low around 52.
Sunday: A chance of rain. Partly sunny, with a high near 67.
Sunday Night: A slight chance of rain. Partly cloudy, with a low around 48.
Monday: Mostly sunny, with a high near 70.
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