warnings updated: Tuesday, November 03, 2026, 9:03 pm PST
NWS San Diego Forecast Discussion – Synopsis
Issued 354 PM PST Tue Nov 3 2026
Quiet weather with slightly below normal temperatures through Wednesday and gusty winds over the coastal waters. Warmer and drier weather returns late week, with well-above-normal temperatures and weak to moderate Santa Ana winds for the weekend.
Covers extreme southwestern California, including Orange, San Diego, western Riverside and southwestern San Bernardino counties.
Breezy conditions are expected today, mainly for the outer waters where winds may gust 20-25 kts this afternoon/evening. A Small Craft Advisory is in effect as these winds may generate hazardous conditions for small craft.
Data Courtesy of San Diego Weather Forecast Office
Almanac information is for the Palm Springs Airport and is provided by the National Weather Service.
High85°normal97° record (1962)
Low58°normal31° record (1936)
Sunrise6:08am
Sunset4:52pm
Moonrise12:33am
Moonset1:49pm
Illumination31%
Evaporative Cooler Effectiveness by City
Thousand Palms
Outside Temp64°F
Dew Point45°F
Est. Output55°F
Updated: Nov 3, 9:12 PM PST
It's already a comfortable 64°F outside — running the cooler isn't needed.
Estimated output is 55°F — air may come out uncomfortably cool.
Palm Desert (Hwy 111 & El Paseo)
Outside Temp63°F
Dew Point47°F
Est. Output55°F
Updated: Nov 3, 9:12 PM PST
It's already a comfortable 63°F outside — running the cooler isn't needed.
Estimated output is 55°F — air may come out uncomfortably cool.
Palm Springs Airport
Outside Temp65°F
Dew Point45°F
Est. Output56°F
Updated: Nov 3, 8:53 PM PST
It's already a comfortable 65°F outside — running the cooler isn't needed.
Estimated output is 56°F — air may come out uncomfortably cool.
Thermal Airport
Outside Temp61°F
Dew Point47°F
Est. Output54°F
Updated: Nov 3, 8:52 PM PST
It's already a comfortable 61°F outside — running the cooler isn't needed.
Estimated output is 54°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)
