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

Currently 87°F in San Jacinto, California, USA

Friday, August 21, 2026 9:30 PM PDT

San Jacinto Forecast Summary

Today	Tomorrow	Sunday

Sunny	Sunny, Hot	Sunny, Hot
High: 103°F	High: 104°F	High: 102°F
Low: 72°F	Low: 72°F	Low: 72°F

Complete Forecast Text Below

Currently in San Jacinto

Temperature, Humidity, Wind & Pressure

Time:	9:30 PM PDT
Temperature:	87°F
Normal Temperature :	79°F
Relative Humidity:	39%
Dewpoint:	58°F
Heat Index:	86°F
Wind Chill:	87°F
Wind:	calm
Gusts:	1 mph
Barometer:	30.44" Hg rising

Sunrise & Sunset

	Sunrise	Sunset	Daylight
Today:	6:13 AM	7:27 PM	13:14
Tomorrow:	6:14 AM	7:26 PM	13:12
30 Day Sunrise and Sunset Almanac

Extreme Temperatures

	Today	Time	Normal	Last Year
High:	104°F	2:46 PM	96°F	107°F
Low:	75°F	6:34 AM	65°F	69°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:

87°F

Hemet:

85°F

Lake Elsinore:

84°F

Moreno Valley:

85°F

Riverside (Canyon Crest):

82°F

Riverside (Presidential Park):

85°F

Temecula:

N/A*

* Weather report not current

Complete Local Weather Roundup

San Jacinto Forecast

Friday, August 21, 2026

This afternoon in San Jacinto, the weather will be sunny and hot, with temperatures climbing to near 103° and southwest winds around 15 mph at times, with gusts near 25 mph. Skies stay mostly clear tonight as temperatures cool to around 71°.

Tomorrow stays sunny and even a touch hotter, with a high near 104° and a southwest breeze around 10 mph, with gusts near 20 mph. Sunday remains sunny and a bit cooler near 102°, then Monday stays sunny near 102° as well. The warm stretch continues Tuesday and Wednesday with highs near 105°, and Thursday stays sunny near 104°. Overnight lows hold in the low 70s through the period.

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

Pollen level is rated "low-medium".

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

Tonight: Mostly clear and warm, low around 72°F.

Saturday: Sunny and hot, high of about 104°F.

Saturday night:Mostly clear, low near 72°F.

Sunday: Sunny and hot, high around 102°F.

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

Monday: Sunny and hot, high near 102°F.

Monday night: Mostly clear, low around 73°F.

Tuesday: Sunny and hot, high of about 105°F.

Tuesday night: Mostly clear, low near 74°F.

Wednesday: Sunny and hot, high around 105°F.

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

Thursday: Sunny and hot, high near 104°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 20	104°F	71°F	87°F	0.00"
August 19	106°F	70°F	87°F	0.00"
August 18	102°F	69°F	85°F	0.00"
August 17	102°F	67°F	84°F	0.00"
August 16	98°F	66°F	81°F	0.00"
August 15	95°F	65°F	77°F	0.00"
August 14	90°F	66°F	77°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

Heat Advisory continues into Thursday across inland valleys

A heat advisory issued by the National Weather Service for the interior val ...

Posted August 19, 2026, 11:34 PM

More San Jacinto Weather News

Other Weather Information

Temperature, Humidity, Wind & Pressure

Sunrise & Sunset

Extreme Temperatures

Precipitation

National Weather Service

Other San Jacinto Weather Forecasts

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