Currently 70°F in San Jacinto, California, USA
70°F
74°F / 68°F
2 mph W
0.32"
Thursday, September 18, 2025 8:05 AM PDT

Seven Day Forecast for San Jacinto, California

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.

Showers, Chance of thunderstorms
Today:
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".
Thursday night / Friday morning:
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
Chance of thunderstorms, Chance of showers
Friday:
85°F  Chance for showers and thunderstorms
30% chance of precipitation
Friday night / Saturday morning:
62°F  Mostly clear
0% chance of precipitation
Sunny
Saturday:
89°F  Sunny
0% chance of precipitation
Saturday night / Sunday morning:
62°F  Mostly clear
0% chance of precipitation
Mostly sunny, Chance of showers
Sunday:
88°F  Mostly sunny with a slight chance of showers
20% chance of precipitation
Sunday night / Monday morning:
64°F  Mostly cloudy with a slight chance of showers
20% chance of precipitation
Partly cloudy, Chance of showers
Monday:
92°F  Partly cloudy with a slight chance of showers
20% chance of precipitation
Monday night / Tuesday morning:
66°F  Partly cloudy
0% chance of precipitation
Mostly sunny
Tuesday:
91°F  Mostly sunny
15% chance of precipitation
Tuesday night / Wednesday morning:
64°F  Mostly clear
0% chance of precipitation
Sunny
Wednesday:
90°F  Sunny
0% chance of precipitation

The San Jacinto, California weather pages are a service of WeatherCurrents. San Jacinto is located in the heart of the San Jacinto Valley, near Hemet, the Soboba Casino, and at the foot of the San Jacinto Mountains.
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