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San Jacinto Forecast Summary
Currently in San Jacinto
Temperature, Humidity, Wind & Pressure
Sunrise & Sunset
Extreme Temperatures
Precipitation
Data captured from a Davis Instruments Vantage Pro 2
Local Weather Roundup
San Jacinto:
N/A*
75°F
81°F
77°F
80°F
78°F
N/A*
* Weather report not
current
San Jacinto Forecast
Monday, September 21, 2026
This afternoon in San Jacinto, the weather will be mostly sunny and pleasant, with temperatures climbing to near 82° and a light southwest breeze at times. Patchy fog may return after 11pm, and skies will turn partly cloudy overnight with a low around 57°. Tomorrow starts with patchy fog before 11am, then turns mostly sunny and warmer, with a high near 87°. Wednesday stays sunny and warmer near 93°, followed by a mostly clear night around 66°. Thursday brings more sunshine and a high near 95°, then Friday stays sunny near 94°. The weekend looks warm and dry as Saturday reaches near 96°, before a cooler Sunday with sunshine and a high near 88°. Today: Low clouds early, becoming sunny and warm. Afternoon breezes , high near 81°F . Pollen level is rated "medium". Predicted air quality is moderate, AQI: 55 (courtesy of the SCAQMD). Tonight: Partly cloudy. Light breezes, low around 57°F. Tuesday: Sunny and warm. Light breezes, high of about 86°F. Tuesday night:Clear. Light breezes, low near 64°F. Wednesday: Sunny and very warm, high around 92°F. Wednesday night: Clear, low of about 67°F. Thursday: Sunny and very warm, high near 94°F. Thursday night: Mostly clear, low around 67°F. Friday: Sunny and very warm, high of about 93°F. Friday night: Mostly clear, low near 66°F. Saturday: Sunny and hot, high around 96°F. Saturday night: Mostly clear, low of about 64°F. Sunday: Sunny and cooler, high near 88°F. San Jacinto forecast updated daily. Based on data from the National Weather Service, San Diego office and from WeatherCurrents.Recently in
San Jacinto
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San Jacinto
Featured Photos
Full moon: The evening moon rises above Mountain View High School in San Jacinto. Photo courtesy of Denise Leonard.
San Jacinto
Weather News
Extreme heat returns to SoCal; Thunderstorms hit Temecula
Triple-digit heat has returned to the region Tuesday, prompting the Nationa ... Posted September 8, 2026, 9:26 PMOther Weather Information
National Weather Service
Other San Jacinto Weather Forecasts
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