Portland, ME Climate in September

Temperature for September

In Portland, ME during September the average high temperature is 71.7°F. The hottest day on record was September 11, 1983 when the temperature hit 95.0°F.

Portland, ME daily average and extreme temperature range for September

Low Temperature

During September the overnight temperature drops to an average of 49.5°F, with the lowest temperature of 28.9°F being recorded on September 21, 1979. Overnight temperatures drop below freezing between 1 and 3 times in September.

Precipitation for September

In September the average monthly rainfall in Portland, ME is 4.71 inches with rain usually falling on between 10 and 11 days. 1978 was the driest September with only 0.85 inches of rain falling, and 1992 was the wettest September with 37.78 inches of rain. The wettest single day in September was 4 September 1992 when 12.28 inches of rain fell.

In September it usually snows on between 0 and 1 days. There are thunderstorms on between 1 and 2 days in September.

  BENCHMARKS  
Loading Time: Base Classes  0.0069
Controller Execution Time ( Climate / Summary )  0.0810
Total Execution Time  0.0880
  GET DATA  
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  MEMORY USAGE  
2,288,164 bytes
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  URI STRING  
climate/summary/united-states/maine/portland-intl-jetport/september
  CLASS/METHOD  
climate/summary
  DATABASE:  xrssweather0-climatespy   QUERIES: 11  (Hide)
0.0006   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` =  'maine'
AND `urlName` =  'portland-intl-jetport'
LIMIT 1 
0.0006   SELECT `monthNo`, AVG(`meanMinTemp`) AS meanMinTempAVG(`meanMaxTemp`) AS meanMaxTemp
FROM 
(`aggMonthly`)
WHERE `monthNo` =  9
AND `locationId` =  '4036'
GROUP BY `monthNo
0.0006   SELECT `monthNo`, AVG(`meanMinTemp`) AS meanMinTempAVG(`meanMaxTemp`) AS meanMaxTemp
FROM 
(`aggMonthly`)
WHERE `monthNo` =  9
AND `locationId` =  '4036'
GROUP BY `monthNo
0.0015   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` =  '4036'
AND `dimDate`.`monthNo` =  9
ORDER BY 
`maxTempdesc
LIMIT 1 
0.0030   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` =  '4036'
AND `dimDate`.`monthNo` =  9
ORDER BY 
`minTempasc
LIMIT 1 
0.0232   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 4036 and minTemp <= 32  and dd.monthNo 9 group by year) as count_freezing 
0.0243   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 4036 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` =  '4036'
GROUP BY `monthNo
0.0007   SELECT `sumRainfall`, `daysRainfall`, `year`
FROM (`aggMonthly`)
WHERE `monthNo` =  9
AND `locationId` =  '4036'
ORDER BY `sumRainfallasc
LIMIT 1 
0.0006   SELECT `sumRainfall`, `daysRainfall`, `year`
FROM (`aggMonthly`)
WHERE `monthNo` =  9
AND `locationId` =  '4036'
ORDER BY `sumRainfalldesc
LIMIT 1 
0.0014   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` =  '4036'
AND `dimDate`.`monthNo` =  9
ORDER BY 
`maxRainfalldesc
LIMIT 1 
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