Monday, December 7, 2020

November 2020 Climate Data for Memphis, TN

November Climate Recap

After a cool and somewhat wet October that was marked by two passing tropical systems, November swung towards warm and dry. All but seven days averaged above normal temperature-wise with seven of those above average days at or above 10 degrees above normal, including a high of 82 on the 8th. In fact, the average high temperature for the month ended up 7th warmest on record, while the average temperature for the month was in the top 10% of all Novembers on record. The month ended cold though, with highs in the 40s on the 29th and 30th, a low of 28 on the 30th, and even a trace of snowfall that day behind a cold front on the 29th. Only four days had rainfall totals of more than 0.01" and no days with more than an inch, resulting in a monthly total at 32% of normal. There was no severe weather during the month and no warning issued.

Memphis International Airport, Memphis, TN

Average temperature: 56.4 degrees (3.2 degrees above average) 
Average high temperature: 67.2 degrees (4.6 degrees above average) 
Average low temperature: 45.6  degrees (1.9 degrees above average) 
Warmest temperature: 82 degrees (8th) 
Coolest temperature: 28 degrees (30th) 
Heating Degrees Days: 273 (95 below average)
Cooling Degree Days: 23 (10 above average) 
Records set or tied: None 
Comments: The average high temperature for the month of 67.2 degrees was 7th warmest on record.

Monthly total: 1.74" (3.75" below average) 
Days with measurable precipitation: 5 (4.5 days below average) 
Wettest 24-hour period: 0.78" (25th) 
Snowfall: Trace 
Records set or tied: Record daily snowfall tied - Trace (30th / 1974)
Comments: None.

Peak wind: West/43 mph (15th) 
Average wind: 7.4 mph 
Average relative humidity: 62% 
Average sky cover: 38% 

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

Cirrus Weather Solutions /, Bartlett, TN

Average temperature: 54.3 degrees 
Average high temperature: 66.8 degrees 
Average low temperature: 42.5 degrees 
Warmest temperature: 80.5 degrees (8th) 
Coolest temperature: 27.2 degrees (30th) 
Comments: None 

Monthly total: 1.69" (automated rain gauge), 1.80"(manual CoCoRaHS rain gauge) 
Days with measurable precipitation: 5
Wettest date: 0.60" (25th) (via automated gauge) 
Snowfall: Trace 
Comments: Snow flurries were recorded on the morning of November 30

Peak wind: South/33 mph (25th)
Average relative humidity: 73% 
Average barometric pressure: 30.17 in. Hg
Comments: None

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

MWN Forecast Accuracy

MWN average temperature error: 2.08 degrees 
MWN forecast temperatures within 2 degrees of actual: 67% 
MWN average dewpoint error: 2.38 degrees 
MWN forecast dewpoints within 2 degrees of actual: 67% 

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

Climate Outlook - December 2020

The December climate outlook for the United States from the Climate Prediction Center is shown below. Above average temperatures are forecast for much of the United States, with highest probabilities in the Great Plains. Odds favor near average temperatures for Memphis, with a 34% chance of above normal and 33% chances of below and near normal. The average temperature for December is 43.6 degrees, or about 10 degrees cooler than November.

Precipitation is expected to be below normal across much of the U.S. in December with the exception of the Northeast. Near average precipitation is forecast for the Northwest and Appalachian Mountains into Florida. For Memphis, odds favor below average rainfall (a 46% chance) versus only an 21% chance of above average rainfall. Precipitation historically averages 5.74 inches, making December typically the wettest month of the year. 

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