San Clemente Island, CA Climate in September

Temperature for September

In San Clemente Island, CA during September the average high temperature is 71.4°F. The hottest day on record was September 26, 1963 when the temperature hit 102.0°F.

San Clemente Island, CA daily average and extreme temperature range for September

Low Temperature

During September the overnight temperature drops to an average of 61.9°F, with the lowest temperature of 52.0°F being recorded on September 22, 1986. In September it has never frozen overnight.

Precipitation for September

In September the average monthly rainfall in San Clemente Island, CA is 0.15 inches with rain usually falling on between 2 and 3 days. 2012 was the driest September with only 0.00 inches of rain falling, and 1978 was the wettest September with 1.91 inches of rain. The wettest single day in September was 6 September 1978 when 1.81 inches of rain fell.

In September there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in September.
  BENCHMARKS  
Loading Time: Base Classes  0.0103
Controller Execution Time ( Climate / Summary )  0.1389
Total Execution Time  0.1493
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2,294,708 bytes
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  URI STRING  
climate/summary/united-states/california/san-clemente-island-nalf/september
  CLASS/METHOD  
climate/summary
  DATABASE:  xrssweather0-climatespy   QUERIES: 11  (Hide)
0.0007   SELECT `locationId`, `cityName`, `urlName`, `urlState`, `stateName`, `stateCode`, `StationName`, `countryName`, `urlCountry`, `dd1`.`year` as earliestYear, `dd1`.`monthNo` as earliestMonth, `dd1`.`dayNo` as earliestDay, `dd2`.`year` as latestYear, `dd2`.`monthNo` as latestMonth, `dd2`.`dayNo` as latestDay
FROM 
(`dimLocation`)
JOIN `dimDatedd1 ON `dimLocation`.`beginDateId` = `dd1`.`dateId`
JOIN `dimDatedd2 ON `dimLocation`.`endDateId` = `dd2`.`dateId`
WHERE `urlState` =  'california'
AND `urlName` =  'san-clemente-island-nalf'
LIMIT 1 
0.0007   SELECT `monthNo`, AVG(`meanMinTemp`) AS meanMinTempAVG(`meanMaxTemp`) AS meanMaxTemp
FROM 
(`aggMonthly`)
WHERE `monthNo` =  9
AND `locationId` =  '2378'
GROUP BY `monthNo
0.0007   SELECT `monthNo`, AVG(`meanMinTemp`) AS meanMinTempAVG(`meanMaxTemp`) AS meanMaxTemp
FROM 
(`aggMonthly`)
WHERE `monthNo` =  9
AND `locationId` =  '2378'
GROUP BY `monthNo
0.0018   SELECT `maxTemp`, `monthName`, `dayNo`, `dimDate`.`year`, `dimLocation`.`locationId`, `dimLocation`.`countryName`, `dimLocation`.`stateName`, `dimLocation`.`presentationName`, `dimLocation`.`urlCountry`, `dimLocation`.`urlState`, `dimLocation`.`urlName`
FROM (`aggMonthly`)
JOIN `dimLocationON `dimLocation`.`locationId` = `aggMonthly`.`locationId`
JOIN `dimDateON `dimDate`.`dateId` = `aggMonthly`.`maxTempDate`
WHERE `aggMonthly`.`locationId` =  '2378'
AND `dimDate`.`monthNo` =  9
ORDER BY 
`maxTempdesc
LIMIT 1 
0.0036   SELECT `minTemp`, `monthName`, `dayNo`, `dimDate`.`year`, `dimLocation`.`locationId`, `dimLocation`.`countryName`, `dimLocation`.`stateName`, `dimLocation`.`presentationName`, `dimLocation`.`urlCountry`, `dimLocation`.`urlState`, `dimLocation`.`urlName`
FROM (`aggMonthly`)
JOIN `dimLocationON `dimLocation`.`locationId` = `aggMonthly`.`locationId`
JOIN `dimDateON `dimDate`.`dateId` = `aggMonthly`.`minTempDate`
WHERE `aggMonthly`.`locationId` =  '2378'
AND `dimDate`.`monthNo` =  9
ORDER BY 
`minTempasc
LIMIT 1 
0.0754   select min(count_days) as min_daysavg(count_days) as average_daysmax(count_days) as max_days  from (select yearcount(*) as count_days from factDaily fd  join dimDate dd on (dd.dateId fd.DateId) where fd.locationId 2378 and minTemp <= 32  and dd.monthNo 9 group by year) as count_freezing 
0.0237   select min(count_days) as min_daysavg(count_days) as average_daysmax(count_days) as max_days  from (select yearcount(*) as count_days from factDaily fd  join dimDate dd on (dd.dateId fd.DateId) where fd.locationId 2378 and maxTemp <= 32  and dd.monthNo 9 group by year) as count_freezing 
0.0007   SELECT AVG(`sumRainfall`) AS sumRainfallAVG(`daysRainfall`) AS daysRainfallAVG(`daysSnow`) AS daysSnowAVG(`daysTornado`) AS daysTornadoAVG(`daysThunder`) AS daysThunder, `monthNo`
FROM (`aggMonthly`)
WHERE `monthNo` =  9
AND `locationId` =  '2378'
GROUP BY `monthNo
0.0007   SELECT `sumRainfall`, `daysRainfall`, `year`
FROM (`aggMonthly`)
WHERE `monthNo` =  9
AND `locationId` =  '2378'
ORDER BY `sumRainfallasc
LIMIT 1 
0.0007   SELECT `sumRainfall`, `daysRainfall`, `year`
FROM (`aggMonthly`)
WHERE `monthNo` =  9
AND `locationId` =  '2378'
ORDER BY `sumRainfalldesc
LIMIT 1 
0.0017   SELECT `maxRainfall`, `monthName`, `dayNo`, `dimDate`.`year`, `dimLocation`.`locationId`, `dimLocation`.`countryName`, `dimLocation`.`stateName`, `dimLocation`.`presentationName`, `dimLocation`.`urlCountry`, `dimLocation`.`urlState`, `dimLocation`.`urlName`
FROM (`aggMonthly`)
JOIN `dimLocationON `dimLocation`.`locationId` = `aggMonthly`.`locationId`
JOIN `dimDateON `dimDate`.`dateId` = `aggMonthly`.`maxRainfallDate`
WHERE `aggMonthly`.`locationId` =  '2378'
AND `dimDate`.`monthNo` =  9
ORDER BY 
`maxRainfalldesc
LIMIT 1 
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