warnings updated: Sunday, November 15, 2026, 3:48 pm PST
NWS San Diego Forecast Discussion – Synopsis
Issued 1153 AM PST Sun Nov 15 2026
Below-normal temperatures prevailing this week with multiple rounds of precipitation. Gusty winds, marine and beaches hazards, and rain/snow showers with an isolated thunderstorm threat for Monday into early Tuesday morning. A stronger system Thursday/Friday could bring all of the above as well as heavier rainfall and a localized flooding threat.
Covers extreme southwestern California, including Orange, San Diego, western Riverside and southwestern San Bernardino counties.
Almanac information is for the Palm Springs Airport and is provided by the National Weather Service.
High79°normal94° record (1995)
Low54°normal36° record (1930)
Sunrise6:18am
Sunset4:43pm
Moonrise11:36am
Moonset10:03pm
Illumination36%
Evaporative Cooler Effectiveness by City
Thousand Palms
Outside Temp76°F
Dew Point56°F
Est. Output66°F
Updated: Nov 15, 3:50 PM PST
Palm Desert (Hwy 111 & El Paseo)
Outside Temp77°F
Dew Point58°F
Est. Output67°F
Updated: Nov 15, 3:46 PM PST
Palm Springs Airport
Outside Temp76°F
Dew Point50°F
Est. Output64°F
Updated: Nov 15, 2:53 PM PST
Thermal Airport
Outside Temp78°F
Dew Point54°F
Est. Output66°F
Updated: Nov 15, 2:52 PM PST
How to Read This
Score
0–100, based on the wet-bulb depression — how much cooler the air could get versus the actual outside temperature. Drier air means more room to cool, so a bigger gap scores higher.
Wet-Bulb Depression
The gap between the outside (dry-bulb) temperature and the wet-bulb temperature — the coolest evaporation alone could get the air. A bigger gap means drier air and more room for the cooler to work with.
Estimated(Est.) Output
The approximate temperature of the air coming out of the cooler, estimated by cooling the outside temperature most of the way toward the wet-bulb temperature.
Efficiency
These numbers assume 80% saturation efficiency — typical for a well-maintained direct (single-stage) evaporative cooler.
Lower dew point + higher temp = better cooling
(This guide generally will work for misting systems also)
