Posted Thursday, September 18, 2025, 7:24 AM
Today's Forecast: San Jacinto residents should be prepared for a wet day ahead, with showers and thunderstorms dominating the weather scene. The skies will remain mostly cloudy with a high temperature reaching near 87 degrees. An 80% chance of precipitation brings the potential for new rainfall amounts between a quarter and half an inch. While travel may be impacted by wet conditions, winds will remain light and should not present significant issues for outdoor activities.
The Week Ahead: Tonight, the chance of showers and thunderstorms continues, decreasing after 11pm, with mostly cloudy skies and a low around 65 degrees. As we move into Friday, expect a chance of showers and thunderstorms before 5pm under mostly sunny skies, with a high near 86 degrees. The weekend outlook is generally favorable, with sunny conditions on Saturday and a high near 89 degrees, although there's a slight chance of rain showers early Sunday morning. Sunday will see partly sunny skies and a high also near 89. Looking ahead to the start of the workweek, we anticipate mostly sunny days with highs climbing into the low 90s and only a slight chance of rain showers. Nighttime temperatures throughout the week will hover in the low to mid-60s.
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Today:
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86°F 66°F |
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible |
80% chance of precipitation |
Predicted Air Quality: good,
AQI:
48 (courtesy of the SCAQMD). |
Pollen level is rated "medium".
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Thursday night / Friday morning:
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64°F |
A chance of showers and thunderstorms before 11pm. Partly cloudy. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms |
40% chance of precipitation |
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Friday:
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85°F |
Chance for showers and thunderstorms |
30% chance of precipitation |
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Friday night / Saturday morning:
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62°F |
Mostly clear |
0% chance of precipitation |
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Saturday:
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89°F |
Sunny |
0% chance of precipitation |
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Saturday night / Sunday morning:
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62°F |
Mostly clear |
0% chance of precipitation |
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Sunday:
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88°F |
Mostly sunny with a slight chance of showers |
20% chance of precipitation |
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Sunday night / Monday morning:
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64°F |
Mostly cloudy with a slight chance of showers |
20% chance of precipitation |
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Monday:
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92°F |
Partly cloudy with a slight chance of showers |
20% chance of precipitation |
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Monday night / Tuesday morning:
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66°F |
Partly cloudy |
0% chance of precipitation |
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Tuesday:
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91°F |
Mostly sunny |
15% chance of precipitation |
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Tuesday night / Wednesday morning:
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64°F |
Mostly clear |
0% chance of precipitation |
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Wednesday:
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90°F |
Sunny |
0% chance of precipitation |
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