San Jacinto Weather Pages - Current and Past Weather, Forecasts and News for San Jacinto, California

Currently 88°F in San Jacinto, California, USA

Thursday, August 27, 2026 12:02 AM PDT

San Jacinto Forecast Summary

Today	Tomorrow	Saturday

Sunny, Hot	Mostly sunny, Hot	Sunny, Hot
High: 107°F	High: 106°F	High: 103°F
Low: 75°F	Low: 77°F	Low: 74°F

Complete Forecast Text Below

Currently in San Jacinto

Temperature, Humidity, Wind & Pressure

Time:	12:02 AM PDT
Temperature:	88°F
Normal Temperature :	75°F
Relative Humidity:	39%
Dewpoint:	59°F
Heat Index:	87°F
Wind Chill:	88°F
Wind:	calm
Gusts:	3 mph
Barometer:	30.35" Hg rising

Sunrise & Sunset

	Sunrise	Sunset	Daylight
Today:	6:18 AM	7:20 PM	13:02
Tomorrow:	6:18 AM	7:18 PM	13:00
30 Day Sunrise and Sunset Almanac

Extreme Temperatures

	Today	Time	Normal	Last Year
High:	88°F	12:01 AM	97°F	98°F
Low:	88°F	12:01 AM	66°F	67°F

Precipitation

60 Min.	Today	Month	Season
0.00"	0.00"	0.00"	0.00"
Season began July 1, 2026
Past Season Precipitation Totals

Data captured from a Davis Instruments Vantage Pro 2

Local Weather Roundup

San Jacinto:

88°F

Hemet:

86°F

Lake Elsinore:

85°F

Moreno Valley:

84°F

Riverside (Canyon Crest):

81°F

Riverside (Presidential Park):

85°F

Temecula:

N/A*

* Weather report not current

Complete Local Weather Roundup

San Jacinto Forecast

Wednesday, August 26, 2026

This afternoon in San Jacinto, the weather will be sunny and dangerously hot, and an Extreme Heat Warning remains in effect through Wednesday night. Temperatures will climb to near 109°, with heat index values as high as 108° and a southwest wind around 15 mph, gusting near 25 mph. Tonight will stay partly cloudy and very warm, with a low around 75°.

Tomorrow, partly sunny skies will keep the heat in place, with a high near 107° and heat index values as high as 106°. The Air Quality Alert remains in effect through Friday evening. Friday stays mostly sunny and a bit cooler, with a high near 105° and a west wind around 10 mph, gusting near 20 mph. Saturday turns sunny and hot with a high near 103°, then Sunday brings more sunshine and a high near 96°. A slight chance of rain showers arrives Monday afternoon, with a high near 93°, and that chance lingers into Tuesday as temperatures ease to near 92°.

Today: Sunny and hot , high near 109°F .

Pollen level is rated "low-medium".

Predicted air quality is good, AQI: 44 (courtesy of the SCAQMD).

Tonight: Mostly clear, low around 75°F.

Thursday: Sunny and hot, high of about 107°F.

Thursday night:Partly cloudy and warm, low near 77°F.

Friday: Mostly sunny and hot, high around 106°F.

Friday night: Mostly clear, low of about 74°F.

Saturday: Sunny and hot, high near 103°F.

Saturday night: Clear, low around 72°F.

Sunday: Sunny and a little cooler, high of about 96°F.

Sunday night: Mostly clear, low near 63°F.

Monday: Sunny and cooler, high around 92°F.

Monday night: Partly cloudy with a slight chance of showers, low of about 64°F.

Tuesday: Mostly sunny with a slight chance of showers early, high near 92°F.

Complete Forecast Page

San Jacinto forecast updated daily. Based on data from the National Weather Service, San Diego office and from WeatherCurrents.

Recently in San Jacinto

Date	High	Low	Ave.	Prec.
August 26	108°F	75°F	92°F	0.00"
August 25	106°F	71°F	89°F	0.00"
August 24	107°F	71°F	88°F	0.00"
August 23	106°F	71°F	89°F	0.00"
August 22	106°F	71°F	88°F	0.00"
August 21	104°F	75°F	89°F	0.00"
August 20	104°F	71°F	87°F	0.00"
More Past Weather