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:
73°F
71°F
76°F
N/A*
71°F
73°F
N/A*
* Weather report not
current
San Jacinto Forecast
Wednesday, September 17, 2025
Today's Forecast: San Jacinto residents should be aware of a slight chance of showers and thunderstorms developing after 5pm. The day will be mostly cloudy with a high near 94 degrees. No significant wind is expected, keeping conditions comfortable for outdoor activities. Evening commuters should be prepared for potential precipitation with a 20% chance of rain. The Week Ahead: Showers and thunderstorms are likely tonight and will continue into Thursday, with mostly cloudy skies and a low around 66 degrees tonight. The high on Thursday will be cooler, near 88 degrees. Rainfall amounts could range from a quarter to half an inch. The chance of precipitation decreases slightly on Friday, with a mix of sun and clouds and highs around 88. The weekend outlook is much clearer, with sunny skies anticipated for Saturday and Sunday and highs in the low 90s. Nighttime temperatures will remain mild, in the mid-60s. The pleasant weather is expected to continue into the early part of next week. Today: Sunny. A slight chance of thunderstorms after 11am , high near 90°F . Pollen level is rated "medium". Predicted air quality is moderate, AQI: 54 (courtesy of the SCAQMD). Tonight: A chance of showers and thunderstorms, mainly after 11pm, low around 66°F. Thursday: Showers likely with thunderstorm activity also possible, high of about 86°F. Thursday night:Chance of showers and thunderstorms decreasing overnight, low near 64°F. Friday: Chance for showers and thunderstorms, high around 86°F. Friday night: Mostly clear, low of about 64°F. Saturday: Partly cloudy with a slight chance of thunderstorms after noon, high near 90°F. Saturday night: Mostly clear, low around 65°F. Sunday: Mostly sunny, high of about 92°F. Sunday night: Mostly clear, low near 67°F. Monday: Sunny and hot, high around 95°F. Monday night: Mostly clear, low of about 69°F. Tuesday: Sunny, high near 94°F. San Jacinto forecast updated daily. Based on data from the National Weather Service, San Diego office and from WeatherCurrents.Recently in
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Full moon: The evening moon rises above Mountain View High School in San Jacinto. Photo courtesy of Denise Leonard.
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