warnings updated: Thursday, November 05, 2026, 5:03 am PST
NWS San Diego Forecast Discussion – Synopsis
Issued 158 AM PST Thu Nov 5 2026
Gradual warming through Sunday with periods of weak to moderate Santa Anas winds. Temperatures will be as high as 5-15 degrees above normal by Saturday when offshore winds peak. Gradual cooling Monday through Wednesday as offshore winds weaken and eventually turn back onshore.
Covers extreme southwestern California, including Orange, San Diego, western Riverside and southwestern San Bernardino counties.
Weak to locally moderate Santa Ana winds are expected to pick up later this week. Wind gusts for Friday and Saturday will generally be 15-25 mph within inland valleys. Localized gusts 30-40 mph possible near mountain passes and within mountain foothills.
Data Courtesy of San Diego Weather Forecast Office
Almanac information is for the Palm Springs Airport and is provided by the National Weather Service.
High84°normal98° record (2020)
Low58°normal34° record (1936)
Sunrise6:09am
Sunset4:50pm
Moonrise2:39am
Moonset2:43pm
Illumination21%
Evaporative Cooler Effectiveness by City
Thousand Palms
Outside Temp60°F
Dew Point39°F
Est. Output51°F
Updated: Nov 5, 5:04 AM PST
It's already a comfortable 60°F outside — running the cooler isn't needed.
Estimated output is 51°F — air may come out uncomfortably cool.
Palm Desert (Hwy 111 & El Paseo)
Outside Temp57°F
Dew Point42°F
Est. Output50°F
Updated: Nov 5, 5:04 AM PST
It's already a comfortable 57°F outside — running the cooler isn't needed.
Estimated output is 50°F — air may come out uncomfortably cool.
Palm Springs Airport
Outside Temp63°F
Dew Point35°F
Est. Output52°F
Updated: Nov 5, 4:53 AM PST
It's already a comfortable 63°F outside — running the cooler isn't needed.
Estimated output is 52°F — air may come out uncomfortably cool.
Thermal Airport
Outside Temp50°F
Dew Point41°F
Est. Output46°F
Updated: Nov 5, 4:52 AM PST
It's already a comfortable 50°F outside — running the cooler isn't needed.
Estimated output is 46°F — air may come out uncomfortably cool.
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)
