Saturday, October 8, 2016

September 2016 Climate Data for Memphis, TN

September Recap

As the 4th hottest summer (June-August) on record ended, September provided little relief overall with well above average heat continuing. Overall very warm conditions lasted until the last few days of the month with highs in the 90's on 20 of the first 25 days of the month. In addition, September was a very dry month with most locations in the metro receiving less than an inch of rain. The last two weeks of the month saw "abnormally dry" conditions officially give way to "moderate drought" for portions of the metro, including southern Shelby County into north MS. There was no severe weather during the month.

The Drought Index for the Mid-South at the beginning of October shows moderate drought (D1) over the southern metro and abnormally dry (D0) conditions for the rest of the metro. 

Memphis International Airport, Memphis, TN

Average temperature: 80.5 degrees (5.3 degrees above average)
Average high temperature: 90.9 degrees (5.8 degrees above average)
Average low temperature: 70.0 degrees (4.8 degrees above average)
Warmest temperature: 98 degrees (15th, 16th, 25th)
Coolest temperature: 54 degrees (29th)
Records set or tied: Daily high temperature records were set on the 24th (97°) and 25th (98°) and tied on the 15th (98°). A daily record high minimum (warmest low temperatures) was also set on the 15th (78°).
Comments: 20 days recorded highs at or above 90 degrees in September, which is 12.2 more than average. This month tied for the 2nd warmest September on record in Memphis. For the year, the average temperature is 68.5 degrees, which ties for second warmest January-September period on record.

Monthly total: 0.67" (2.42" below average)
Days with measurable precipitation: 5 (2.3 days below normal)
Wettest 24-hour period: 0.54" (10th)
Records set or tied: None
Comments: Despite a very dry month with most precipitation occurring on a single day, through the first nine months of 2016, Memphis International Airport has recorded 50.48" of precipitation, or 12.01" above average (131%). That also ranks as 3rd wettest on record for the January-September period.

Peak wind: East/46 mph (9th)
Average wind: 6.3 mph
Average relative humidity: 61%
Average sky cover: 40%

Click here for a daily statistical recap for Memphis International Airport.

Cirrus Weather Solutions /, Bartlett, TN

Average temperature: 76.1 degrees
Average high temperature: 89.6 degrees
Average low temperature: 64.2 degrees
Warmest temperature: 97.7 degrees (25th)
Coolest temperature: 49.2 degrees (29th)
Comments: None.

Monthly total: 0.79" (automated rain gauge), 0.74" (manual CoCoRaHS rain gauge)
Days with measurable precipitation: 4
Wettest date: 0.41" (13th) (via automated gauge)
Comments: None

Peak wind: Southwest/20 mph (26th)
Average relative humidity: 78%
Average barometric pressure: 30.04 in. Hg

Click here for a daily statistical recap for Bartlett, TN.

MWN Forecast Accuracy

MWN average temperature error: 1.75 degrees
MWN forecast temperatures within 2 degrees of actual: 78%
MWN average dewpoint error: 2.14 degrees
MWN forecast dewpoints within 2 degrees of actual: 65%

MWN's forecasts extend out five periods (2.5 days, or roughly 60 hours). Historical accuracy statistics can be found here.

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