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Rancho San Joaquin, Irvine, CA 92612
Weather Conditions Updated at 8:29pm on 7/24/21
Sky Temperature (°F) Wind 

Visibility 10 mi.


Temp Rate °/hr.
24-hr. Change °

Max Gust 7 mph
High Temperature 79° (3:02pm)
Low Temperature 70° (8:29pm)

Dew Point

Wet Bulb Temperature
Rainfall Since Midnight

24-hour Change
29.98 in. 

Cloud Base ft.
Density Altitude
Pressure Altitude
Vapor Pressure 0.62 in.
Virtual Temperature 74°

Coastal Orange County Forecast

Meteoblue NowcastMarine ForecastArea Forecast Discussion

National Temperature Extremes

Saturday, Contiguous 48 United States
at Death Valley (Stovepipe Wells), CA  Low: at Peter Sinks, Ut

Temperature Converter

Enter temperature in either box and press [TAB].

°F  °C

Station Statistics

Station Location and Elevation
Rancho San Joaquin, Irvine, CA  92612
Latitude: 33.663, Longitude: -117.830
Elevation: 72 Feet Above Sea Level

Station Temperature and Wind Extremes
This Month's High Temp (7/19/21)
This Month's Low Temp (7/3/21)
This Month's Peak Wind Gust mph (7/10/21)

This Year's High Temp (1/15/21)
This Year's Low Temp (1/26/21)
This Year's Peak Wind Gust: mph (1/25/21)

Record High Temp* (7/6/18)
Record Low Temp* (1/14/07)
Record Wind Gust* 47 mph (1/16/08)
Record Low Pressure*: 29.08 in. (1/21/10)
*Record for Since 3/1/2004

Solar Activity

Solar X-rays:  
Geomagnetic Field:  

Courtesy of n3kl.orgMt. Wilson Solar Tower Home Page
U.S. Current Conditions

Current U.S. Temperatures
Moon Phase

Heating° Days (Current) 0
Monthly Heating° Days (To Date): 0
Yearly Heating° Days (To Date) 1007
Cooling° Days (Current) 7
Monthly Cooling° Days (To Date) 189
Yearly Cooling° Days (To Date) 523
Wind Run (Current)  2.29 mi.
Wind Run Monthly (To Date) 80.11 mi.
Wind Run Yearly (To Date) 1524.67 mi.
Rainfall Sentinel
Last Measurable Rainfall
Monthly Rainfall (To Date)
Annual Rainfall (To Date)*
Last Year's Annual Rainfall* 10.67 in.
Normal Annual Rainfall* 13.33 in.
*Annual Rainfall is based on the California Water Year,
  which runs from October 1 through September 30.

Regional Observations

Weather Trend Graphs


Area Forecast Discussion
FXUS66 KSGX 242058

Area Forecast Discussion
National Weather Service San Diego CA
158 PM PDT Sat Jul 24 2021

.SYNOPSIS...High level cloudiness will continue to thicken from 
the east associated with an upper level low positioned over 
Arizona. This feature will move across northern Baja California on
Sunday, then off the coast Sunday night through Monday. While 
moisture will be on the increase, thick cloud cover will limit 
instability. Thus, only isolated showers, and perhaps a 
thunderstorm, are forecast through Sunday afternoon. A slightly 
better chance of showers, and perhaps a thunderstorm, is expected
Sunday evening through Monday afternoon along with a low risk of 
flash flooding in the mountains and deserts. The cloudiness will 
keep it cooler through Monday, before warming occurs through mid 
week. Isolated thunderstorms will be possible in the mountains 
each day next week as monsoonal flow continues, though moisture 
will be less before increasing again late next week. 



-Forecast Highlights-

* Thickening clouds with only isolated showers through Sunday
* Showers become more likely Sunday night-Monday
* Slight chance of thunderstorms with a low flash flood risk 

Thickening mid/high level cloudiness continues this afternoon
ahead of a closed low positioned over Arizona. This feature will 
move slowly west-southwest to over northern Baja California by
Sunday afternoon then off the coast Monday. 

Moisture is high around this upper low and will be on the 
increase through Sunday night with PW increasing into the 1.5-1.75
inch range, highest over the deserts. However, despite this
moisture increase, the thick cloud deck will limit instability 
significantly with MUCAPE barely into the 100 J/KG range over the 
mountains and deserts Sunday-Monday. Also, the low to mid level 
wind fields will increase out of the east through Monday morning,
before becoming southwest. This will lead to less convergence
occurring over the mountains with cells on the move as well, 
thus limiting rainfall amounts. 

The best chance of showers, and possibly a thunderstorm, will be 
Sunday evening through Monday when the trough axis moves across 
Southern California, providing the best convergence and lift. 

Hi-resolution models of the WRF, HRRR, and HREF are not bullish on
rainfall. This downward trend in rainfall amounts has continued
since last night. So now we are forecasting 0.10-0.25" over the 
mountains with isolated amounts up to 1.00". Deserts 0.05-0.25". 
Less than 0.10" west of the mountains. 

Despite the limiting factors for more robust convection and
rainfall amounts, atmospheric moisture will be high, so there is 
a low risk of flash flooding, particularly from Sunday evening
through Monday afternoon.

The trough will lift northwest away from the region on Tuesday.
However, monsoonal flow never really shuts off with southeast flow
continuing. Moisture will decrease but PW will remain at or above
1 inch, which is sufficient for a few showers or thunderstorms to
develop each day next week over the mountains. The risk of showers
and thunderstorms could expand into the deserts by late next week
as monsoonal moisture increases again. 

Highs through Monday will be cooler than normal, especially over
the deserts before increasing through the middle part of next
week. However, lows will continue rather warm and on the muggy
side given the monsoonal moisture present.


241615Z...Coast/Valleys...Areas of low clouds with bases 1000-1500 
ft MSL are currently clearing at the inland edges. Low clouds will 
likely clear to the coast by 18z, although some patches will persist 
at the beaches into the afternoon. Otherwise, SCT-BKN at or abv 
15000 ft MSL through tonight. Patchy low cloud cover will move 
inland after 03z Sun with bases 900-1300 FT MSL.

Mountains/Deserts...SCT-BKN high clouds at or abv 15000 ft, 
increasing in coverage and lowering to 10000 FT early Sun. Isolated 
TSRA will be possible 21z to 01z Sun, mainly across the mtns. 
Lightning strikes and gusty and erratic winds will be possible vcnty 

No hazardous marine conditions expected through Wednesday.



There is a low flash flood risk Sunday evening through Monday 
afternoon when showers will be on the increase, along with a 
slight chance of thunderstorms. However, a solid cloud deck will 
limit instability and rather fast low/mid level wind flow will 
keep showers and any thunderstorms that develop on the move. This 
will limit rainfall amounts. Only a few showers, and an outside
risk of a thunderstorm, is expected tonight-Sunday afternoon.

Rainfall amounts have been lowered. Total rainfall through Monday
is forecast to be 0.10-0.25" with isolated amounts to 1.00" in 
the mountains, 0.05-0.25" across the deserts, and less than 0.10" 
west of the mountains. 

Moisture will decrease by Tuesday, but enough moisture is expected
to be present each day next week to result in the potential of a 
few showers or thunderstorms over the mountains each afternoon and
possibly including the deserts by late next week as moisture 
increases again.


Skywarn activation is not requested. However weather spotters are 
encouraged to report significant weather conditions.





© (rev. 2021_07181712)
Conditions Updated once per minute.
Page will automatically refresh every five minutes.
All temperatures and dew points are in degrees Fahrenheit.

Weather Hardware by Davis Instruments
Weather Software by Ambient Weather, augmented by WeatherDisplay


Radar courtesy of NWS and WUnderground
Satellite courtesy of NWS
Current conditions map courtesy of WUnderground
Current Temperatures map courtesy of WeatherCentral
Local Forecast courtesy of
Wind direction image courtesy of Long Beach, WA Weather
Regional Observations courtesy of

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This site reports weather observed at the Rancho San Joaquin village of Irvine, California.
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nor the Rancho San Joaquin Apartments.
So there!

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