San Diego, CA

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Last Map Update: Wed, Mar 11, 2026 at 6:00:14 pm PDT

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Heat Advisory

Small Craft Advisory

HeatRisk Forecast

Highs Thursday

Highs Friday

Significant Heat Continues Next Week

A strong ridge is bringing extremely anomalous March heat to the region. Coastal San Diego and Orange Counties will experience peak high temperatures Thursday and Friday, around 83–93°F —exceptional for any time of year—while inland valleys similarly hover around the low to mid 90s. While Saturday offers a slight reprieve (a few degrees cooler), the ridge strengthens again Sunday, setting the stage for daily record highs (and perhaps a few monthly record highs) across the interior and deserts next week. While coastal temperatures also increase again into next week, only minor HeatRisk is anticipated as the sea breeze will moderate the temperatures.

High temperatures increase another 10-15°F Thursday, bringing temperature anomalies to 15-30°F above average for this time of year. This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration.

Well above normal temperatures will allow for minor to moderate heat risk across Southern California late this week.

The upper ridge re-strengthens Sunday, setting the stage for additional daily record highs (and perhaps monthly record highs) across the interior and deserts next week.