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

Currently 82°F in San Jacinto, California, USA

Saturday, August 29, 2026 12:52 AM PDT

San Jacinto Forecast Summary

Today	Tomorrow	Monday

Sunny, Hot	Sunny, Hot	Sunny
High: 102°F	High: 97°F	High: 93°F
Low: 72°F	Low: 70°F	Low: 66°F

Complete Forecast Text Below

Currently in San Jacinto

Temperature, Humidity, Wind & Pressure

Time:	12:52 AM PDT
Temperature:	82°F
Normal Temperature :	75°F
Relative Humidity:	54%
Dewpoint:	63°F
Heat Index:	83°F
Wind Chill:	82°F
Wind:	calm
Gusts:	none
Barometer:	30.35" Hg rising

Sunrise & Sunset

	Sunrise	Sunset	Daylight
Today:	6:20 AM	7:18 PM	12:58
Tomorrow:	6:21 AM	7:17 PM	12:56
30 Day Sunrise and Sunset Almanac

Extreme Temperatures

	Today	Time	Normal	Last Year
High:	84°F	12:01 AM	97°F	98°F
Low:	82°F	12:51 AM	66°F	64°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:

82°F

Hemet:

80°F

Lake Elsinore:

80°F

Moreno Valley:

78°F

Riverside (Canyon Crest):

77°F

Riverside (Presidential Park):

81°F

Temecula:

N/A*

* Weather report not current

Complete Local Weather Roundup

San Jacinto Forecast

Friday, August 28, 2026

This afternoon in San Jacinto, the weather will be mostly sunny and very hot, and an Extreme Heat Warning remains in effect through Friday afternoon along with an Air Quality Alert through Friday evening. Highs will climb to near 106°, with heat index values as high as 105°. A southwest wind around 15 mph at times, with gusts near 25 mph, will offer only limited relief. Tonight stays mostly clear and much cooler, with a low around 71°.

Tomorrow will be sunny and still hot, with a high near 102° and a southwest wind around 15 mph at times, with gusts near 25 mph. Sunday stays sunny with a high near 97°, then Monday eases back to near 93° under plenty of sun. Tuesday looks mostly sunny with a high near 90°, and a slight chance of rain showers returns Tuesday night. That shower chance lingers into Wednesday and Thursday, with mostly sunny afternoons and highs near 92° on Wednesday and 94° on Thursday.

Today: Mostly sunny and hot , high near 106°F .

Pollen level is rated "low-medium".

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

Tonight: Mostly clear, low around 72°F.

Saturday: Sunny and hot, high of about 102°F.

Saturday night:Clear, low near 70°F.

Sunday: Sunny and a little cooler, high around 97°F.

Sunday night: Mostly clear, low of about 66°F.

Monday: Sunny and cooler, high near 93°F.

Monday night: Mostly clear, low around 63°F.

Tuesday: Sunny and cooler, high of about 89°F.

Tuesday night: Partly cloudy, low near 66°F.

Wednesday: Mostly sunny with a slight chance of showers, high around 92°F.

Wednesday night: Partly cloudy, low of about 68°F.

Thursday: Mostly sunny with a slight chance of showers, high near 94°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 28	106°F	76°F	90°F	0.00"
August 27	103°F	79°F	91°F	0.00"
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"
More Past Weather