San Jacinto Weather Pages (California) including current sensor readings, forecasts, weather news and features, links, weather history and climate information http://weathercurrents.com/sanjacinto/ 60 Copyright 2026 WeatherCurrents. All rights reserved. en-us webmaster@weathercurrents.com http://static.weathercurrents.com/images/WeatherCurrentsBug.gif http://weathercurrents.com High: 71°F at 12:01 AM Low: 69°F at 3:29 AM Wind: calm Precipitation: 0.00" http://weathercurrents.com/sanjacinto/ http://weathercurrents.com/sanjacinto//NewsItemDisplay.do?Id=1682 An Extreme Heat Warning issued by the National Weather Service for the inland valleys will remain in effect until 8 PM Sunday, as high heat continues to grip Southern California. Highs in the upper 90s and 100s have been observed across the WeatherCurrents network over the past few days, with Lake Elsinore even topping 112 degrees on Saturday afternoon. Unusually high humidities, attributed to much warmer-than-average sea surface temperatures (SSTs) off the SoCal coast, have provided little relief from the daytime heat even at night throughout July. As a result, average temperatures across Southern California were significantly above normal for the month of July - a trend that appears to continue into at least the first half of August. Monsoonal moisture, which has been largely absent from the region up to this point this summer, is forecast to increase next week - primarily affecting the mountains and deserts. Forecasts show little relief from our summer heat in the coming sever ... http://weathercurrents.com/sanjacinto//NewsItemDisplay.do?Id=1681 The National Weather Service has issued an Extreme Heat Warning for the inland valleys from 10 AM Wednesday morning through 8 PM Monday evening - affecting all areas except for the higher elevations in the mountains - as a result of strengthening high pressure over the region. Temperatures are expected to soar into the upper 90s to low 110s across inland communities over the next few days. Coastal communities are expected to remain cooler, although a Heat Advisory remains in place for these areas as well through 6 PM Saturday. The marine layer is forecast to stay roughly 1500 feet above sea level during the overnight hours in the coming days. Sea surface temperatures off the Southern California coast remain above-average for this time of year, keeping humidities and overnight temperatures considerably higher than normal for the time being. Strong high pressure may return late next week, ushering in additional extreme heat across the region. The National Weather Service advises ev ... http://weathercurrents.com/sanjacinto//NewsItemDisplay.do?Id=1680 On July 9th 2026, the Climate Prediction Center updated their seasonal El Nino Southern Oscillation (ENSO) diagnostic discussion to include an El Nino Advisory - highlighting the rapidly emerging El Nino conditions in the equatorial Pacific Ocean, which is likely to strengthen significantly through at least Spring 2027. The report describes an 81 percent chance of a very strong El Nino developing by the October-December period, with very high confidence that this trend will continue into Spring of 2027. According to the Climate Prediction Center, this event would be one of the largest and most significant El Nino phenomena to have been observed since the historical record began in 1950. El Nino (especially strong El Nino events) has been associated with above-average rainfall across Southern California, in addition to typical impacts seen elsewhere around the globe. However, even strong El Nino events are no guarantee of expected outcomes; the winter of 2015-2016 featured a stron ... http://weathercurrents.com/sanjacinto//NewsItemDisplay.do?Id=1679 Temperatures are forecast to soar across Southern California this week, nearing triple-digits inland through at least Thursday, as multiple rounds of monsoonal moisture surge into the region due to high pressure over the central Rocky Mountains. The primary areas of focus during this week's monsoonal moisture are the mountains and deserts, with lower chances of thunderstorm activity making it west of the mountains. WeatherCurrents stations in Anza, East Hemet and Pinon Hills all recorded light measurable precipitation Monday afternoon, sprinkles briefly fell in other inland valley communities. After Monday, monsoonal moisture will decrease across the region Tuesday and Wednesday, before returning for Thursday and Friday. Increased humidity is also resulting in warmer overnight temperatures, offering little relief from the daytime heat. In addition, the National Weather Service has issued an Extreme Heat Warning for all inland, mountain and desert areas of the region from 10 AM We ... http://weathercurrents.com/sanjacinto//NewsItemDisplay.do?Id=1678 Two separate wildfires burning in the southern Santa Ana Mountains have sent extensive smoke into the inland valleys this week. The fires, dubbed the Pipeline Fire and Volcano Fire, are burning in southern Camp Pendleton and next to the Santa Rosa Plateau, respectively. The Pipeline Fire, burning near the intersection of Stuart Mesa Road and Hammond Drive in the southern portion of Camp Pendleton, was first reported on Monday around 2 PM, and has burned approximately 1,064 acres as of Tuesday afternoon. The Volcano Fire was reported just before 3 PM, and is burning dense brush near the intersection of Tenaja Road and Via Volcano, just west of the Santa Rosa Plateau. As of 5 PM Tuesday, the fire had burned 77 acres. While no structures have been lost and no injuries reported from both fires as of Tuesday afternoon, evacuation orders have been issued in the La Cresta community.