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

Currently 90°F in San Jacinto, California, USA

Wednesday, May 20, 2026 2:39 PM PDT

San Jacinto Forecast Summary

Today	Tomorrow	Friday

Sunny	Sunny	Sunny
High: 89°F	High: 90°F	High: 87°F
Low: 54°F	Low: 56°F	Low: 55°F

Complete Forecast Text Below

Currently in San Jacinto

Temperature, Humidity, Wind & Pressure

Time:	2:39 PM PDT
Temperature:	90°F
Normal Temperature :	80°F
Relative Humidity:	9%
Dewpoint:	22°F
Heat Index:	86°F
Wind Chill:	90°F
Wind:	5 mph W (284°)
Gusts:	10 mph
Barometer:	30.33" Hg falling

Sunrise & Sunset

	Sunrise	Sunset	Daylight
Today:	5:45 AM	7:46 PM	14:01
Tomorrow:	5:44 AM	7:46 PM	14:02
30 Day Sunrise and Sunset Almanac

Extreme Temperatures

	Today	Time	Normal	Last Year
High:	91°F	2:37 PM	79°F	94°F
Low:	55°F	6:10 AM	54°F	57°F

Precipitation

60 Min.	Today	Month	Season
0.00"	0.00"	0.12"	7.83"
Season began July 1, 2025
Past Season Precipitation Totals

Data captured from a Davis Instruments Vantage Pro 2

Local Weather Roundup

San Jacinto:

90°F

Hemet:

88°F

Lake Elsinore:

97°F

Moreno Valley:

N/A*

Riverside (Canyon Crest):

91°F

Riverside (Presidential Park):

88°F

Temecula:

N/A*

* Weather report not current

Complete Local Weather Roundup

San Jacinto Forecast

Wednesday, May 20, 2026

This afternoon in San Jacinto, the weather will be sunny and warm, with a high near 89° and a southwest wind around 5 to 15 mph. Tonight stays mostly clear and cool, with a low around 56°.

Thursday looks sunny and a touch warmer, with a high near 90° and a west wind around 10 mph. Thursday night stays mostly clear with a low around 55°, then Friday brings more sunshine and a high near 88°. The weekend stays bright and pleasant, with highs near 88° on Saturday and near 87° on Sunday, while overnight lows hold in the low 50s. Memorial Day turns a bit cooler with sunshine and a high near 82°, and Tuesday looks even cooler with plenty of sun and a high near 75°.

Today: Sunny and warm , high near 89°F .

Pollen level is rated "medium".

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

Tonight: Mostly clear after patchy fog burns off, low around 56°F.

Thursday: Sunny and warm, high of about 90°F.

Thursday night:Mostly clear, low near 55°F.

Friday: Sunny and warm, high around 87°F.

Friday night: Mostly clear, low of about 54°F.

Saturday: Sunny and warm, high near 87°F.

Saturday night: Clear, low around 54°F.

Sunday: Sunny and warm, high of about 87°F.

Sunday night: Clear, low near 53°F.

Monday: Sunny and ncie, high around 82°F.

Monday night: Clear, low of about 51°F.

Tuesday: Mostly sunny and a little cooler, high near 75°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.
May 19	87°F	50°F	70°F	0.00"
May 18	83°F	56°F	65°F	0.00"
May 17	67°F	57°F	61°F	0.00"
May 16	75°F	59°F	N/A	0.00"
May 14	82°F	54°F	N/A	0.00"
May 13	83°F	59°F	67°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

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Other Weather Information

Temperature, Humidity, Wind & Pressure

Sunrise & Sunset

Extreme Temperatures

Precipitation

National Weather Service

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