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

Currently 65°F in San Jacinto, California, USA

Tuesday, September 1, 2026 2:54 AM PDT

San Jacinto Forecast Summary

Today	Tomorrow	Thursday

Sunny	Sunny	Sunny
High: 90°F	High: 89°F	High: 90°F
Low: 63°F	Low: 62°F	Low: 61°F

Complete Forecast Text Below

Currently in San Jacinto

Temperature, Humidity, Wind & Pressure

Time:	2:54 AM PDT
Temperature:	65°F
Normal Temperature :	73°F
Relative Humidity:	43%
Dewpoint:	41°F
Heat Index:	65°F
Wind Chill:	65°F
Wind:	calm
Gusts:	none
Barometer:	30.45" Hg steady

Sunrise & Sunset

	Sunrise	Sunset	Daylight
Today:	6:23 AM	7:15 PM	12:52
Tomorrow:	6:23 AM	7:13 PM	12:50
30 Day Sunrise and Sunset Almanac

Extreme Temperatures

	Today	Time	Normal	Last Year
High:	69°F	12:01 AM	97°F	N/A
Low:	65°F	2:53 AM	66°F	N/A

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:

65°F

Hemet:

65°F

Lake Elsinore:

65°F

Moreno Valley:

63°F

Riverside (Canyon Crest):

63°F

Riverside (Presidential Park):

67°F

Temecula:

N/A*

* Weather report not current

Complete Local Weather Roundup

San Jacinto Forecast

Monday, August 31, 2026

This afternoon in San Jacinto, the weather will be sunny and warm, with temperatures climbing to near 93° this afternoon before easing back to around 61° overnight under clear skies.

Tomorrow stays sunny and a touch cooler, with a high near 91° and a west wind around 15 mph at times. Wednesday looks sunny again with a high near 90°, followed by clear and cooler conditions Wednesday night with a low around 60°. Thursday stays sunny near 90°, then Friday turns sunny and a bit warmer near 92°. By Saturday, a slight chance of rain showers arrives after 11am with a mostly sunny high near 91°, and that chance of showers continues Saturday night. Sunday brings a chance of rain showers with a mostly sunny high near 93°.

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

Pollen level is rated "low-medium".

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

Tonight: Mostly clear, low around 63°F.

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

Tuesday night:Mostly clear, low near 62°F.

Wednesday: Sunny, high around 89°F.

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

Thursday: Sunny, high near 90°F.

Thursday night: Mostly clear, low around 60°F.

Friday: Sunny, high of about 91°F.

Friday night: Mostly clear, low near 65°F.

Saturday: Mostly sunny, high around 91°F.

Saturday night: Partly cloudy with a slight chance of showers, low of about 69°F.

Sunday: Mostly sunny with a slight chance of showers, high near 93°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 31	93°F	66°F	78°F	0.00"
August 30	97°F	70°F	83°F	0.00"
August 29	101°F	75°F	88°F	0.00"
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"
More Past Weather

San Jacinto Featured Photos

Full moon: The evening moon rises above Mountain View High School in San Jacinto. Photo courtesy of Denise Leonard.

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San Jacinto Weather News

Late August heat wave made worse by high dew points

The recent stretch of exceptionally hot days across Southern California, ha ...

Posted August 31, 2026, 11:57 PM

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Other Weather Information

Temperature, Humidity, Wind & Pressure

Sunrise & Sunset

Extreme Temperatures

Precipitation

National Weather Service

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