warnings updated: Monday, November 02, 2026, 12:48 am PST
NWS San Diego Forecast Discussion – Synopsis
Issued 954 PM PST Sun Nov 1 2026
Widespread light rain will continue this morning, becoming more scattered during the day before tapering off this afternoon and evening. Dry and warmer for the remainder of the week with highs near to a few degrees below normal each day.
Covers extreme southwestern California, including Orange, San Diego, western Riverside and southwestern San Bernardino counties.
High temperatures will be chilly for this afternoon, and generally around 10-15 degrees below normal, with any lingering shower or two coming to an end.
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°normal98° record (1950)
Low59°normal36° record (1936)
Sunrise6:07am
Sunset4:53pm
Moonrise---
Moonset1:19pm
Illumination51%
Evaporative Cooler Effectiveness by City
Thousand Palms
Outside Temp64°F
Dew Point46°F
Est. Output56°F
Updated: Nov 2, 12:55 AM PST
It's already a comfortable 64°F outside — running the cooler isn't needed.
Estimated output is 56°F — air may come out uncomfortably cool.
Palm Desert (Hwy 111 & El Paseo)
Outside Temp57°F
Dew Point51°F
Est. Output54°F
Updated: Nov 2, 12:47 AM PST
It's already a comfortable 57°F outside — running the cooler isn't needed.
Estimated output is 54°F — air may come out uncomfortably cool.
Palm Springs Airport
Outside Temp59°F
Dew Point47°F
Est. Output53°F
Updated: Nov 1, 11:53 PM PST
It's already a comfortable 59°F outside — running the cooler isn't needed.
Estimated output is 53°F — air may come out uncomfortably cool.
Thermal Airport
Outside Temp64°F
Dew Point48°F
Est. Output56°F
Updated: Nov 1, 11:52 PM PST
It's already a comfortable 64°F outside — running the cooler isn't needed.
Estimated output is 56°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)
