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

Currently 92°F in San Jacinto, California, USA

Tuesday, September 8, 2026 11:31 AM PDT

San Jacinto Forecast Summary

Today	Tomorrow	Thursday

Sunny, Hot	Sunny, Hot	Sunny, Chance of thunderstorms
High: 98°F	High: 103°F	High: 100°F
Low: 68°F	Low: 76°F	Low: 76°F

Complete Forecast Text Below

Currently in San Jacinto

Temperature, Humidity, Wind & Pressure

Time:	11:31 AM PDT
Temperature:	92°F
Normal Temperature :	86°F
Relative Humidity:	38%
Dewpoint:	62°F
Heat Index:	93°F
Wind Chill:	92°F
Wind:	7 mph W (271°)
Gusts:	11 mph
Barometer:	30.46" Hg rising

Sunrise & Sunset

	Sunrise	Sunset	Daylight
Today:	6:25 AM	7:03 PM	12:38
Tomorrow:	6:26 AM	7:02 PM	12:36
30 Day Sunrise and Sunset Almanac

Extreme Temperatures

	Today	Time	Normal	Last Year
High:	92°F	11:26 AM	94°F	95°F
Low:	71°F	5:34 AM	64°F	67°F

Precipitation

60 Min.	Today	Month	Season
0.00"	0.00"	0.23"	0.23"
Season began July 1, 2026
Past Season Precipitation Totals

Data captured from a Davis Instruments Vantage Pro 2

Local Weather Roundup

San Jacinto:

92°F

Hemet:

90°F

Lake Elsinore:

98°F

Moreno Valley:

90°F

Riverside (Canyon Crest):

89°F

Riverside (Presidential Park):

89°F

Temecula:

N/A*

* Weather report not current

Complete Local Weather Roundup

San Jacinto Forecast

Tuesday, September 8, 2026

This afternoon in San Jacinto, the weather will be mostly sunny and very hot, and an Heat Advisory and Extreme Heat Warning remain in effect through Wednesday due to high temperatures and high humidity. Highs will climb to near 98°, then temperatures will ease back to around 75° overnight under mostly clear skies.

Tomorrow will be sunny and even hotter, with a high near 103° and a light southwest breeze at times. Wednesday night stays mostly clear and mild, with a low around 75°. Thursday brings a slight chance of showers and thunderstorms between 11 AM and 5 PM, otherwise sunny with a high near 100°. The rest of the week turns a bit cooler and stays mostly dry, with highs near 96° Friday, around 90° Saturday and Sunday, then near 92° Monday. Overnight lows fall to around 71° Thursday night, then into the lower 60s by Friday night and the weekend.

Today: Sunny, hot and humid , high near 98°F .

Pollen level is rated "low-medium".

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

Tonight: Mostly clear and humid, low around 76°F.

Wednesday: Sunny, hot and humid, high of about 103°F.

Wednesday night:Mostly clear and humid, low near 76°F.

Thursday: Sunny and hot with some clouds later and a slight chance of showers, high around 100°F.

Thursday night: Mostly clear, low of about 72°F.

Friday: Sunny and hot, high near 95°F.

Friday night: Mostly clear and cooler, low around 62°F.

Saturday: Sunny and cooler, high of about 90°F.

Saturday night: Clear, low near 61°F.

Sunday: Sunny, high around 90°F.

Sunday night: Clear, low of about 61°F.

Monday: Sunny, high near 91°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.
September 7	87°F	71°F	79°F	0.03"
September 6	79°F	66°F	73°F	0.20"
September 5	93°F	59°F	78°F	0.00"
September 4	89°F	58°F	72°F	0.00"
September 3	88°F	56°F	71°F	0.00"
September 2	89°F	57°F	73°F	0.00"
September 1	92°F	60°F	75°F	0.00"
More Past Weather