Thursday, July 8, 2021

June 2021 Climate Report for Memphis, TN

June Climate Recap

The months of April and May were cooler and drier than average, and that trend continued for much of June. 17 of the days in June were below average and only five days were above average by more than two degrees, resulting in an average temperatures that was a degree below average for the month. The first 90 degree reading of 2021 finally occurred on June 11 (18 days later than average). The number of 90 degree days was right at average, however. 

Precipitation ended the month 0.75" above average at 4.74", however 88% of that rain fell in the first nine days of the month. Just south of the border, flooding occurred in the first week of June as up to 6+ inches of rain fell. By the end of the month, prior to a decent soaking on the 30th, abnormally dry conditions were found across the area, particularly north of I-40 where rain early in the month was much less than at the airport. (Just over 2 inches was recorded at MWN in north Bartlett.) The only severe weather of the month occurred from the afternoon of the 8th into the 9th when very heavy rain occurred mainly along and south of the TN/MS state line. Flooding was reported south of the immediate metro in north MS. About 2.5" of rain fell at the airport, but reports of 6-12" of rain were received to the south.

Memphis International Airport, Memphis, TN

Average temperature: 78.9 degrees (1.0 degrees below average) 
Average high temperature: 87.0 degrees (2.4 degrees below average) 
Average low temperature: 70.8 degrees (0.4 degrees above average) 
Warmest temperature: 94 degrees (12th, 13th, 29th) 
Coolest temperature: 62 degrees (22nd, 23rd) 
Heating Degrees Days: 0 (0 above average)
Cooling Degree Days: 426 (21 below average) 
Records set or tied: None
Comments: There were 15 days with high temperatures above 90 (0.5 day below average) with the first day being June 11 (18 days later than normal). The average first 90 degree day for the year is May 24.

Monthly total: 4.74" (0.75" above average) 
Days with measurable precipitation: 9 (0.1 days above average) 
Wettest 24-hour period: 2.51" (8th-9th) 
Snowfall: 0.0"
Records set or tied: None
Comments: Two days recorded precipitation of more than an inch, while June averages 1.3 days.

Peak wind: South/41 mph (7th) 
Average wind: 7.3 mph 
Average relative humidity: 70% 
Average sky cover: 53% 

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

Cirrus Weather Solutions /, Bartlett, TN

Average temperature: 77.9 degrees 
Average high temperature: 88.3 degrees 
Average low temperature: 69.0 degrees 
Warmest temperature: 95.5 degrees (17th) 
Coolest temperature: 55.6 degrees (23rd) 
Comments: None 

Monthly total: 1.95" (automated rain gauge), 2.18"(manual CoCoRaHS rain gauge) 
Days with measurable precipitation: 11
Wettest date: 0.94" (1st) (via automated gauge) 
Snowfall: 0.0"
Comments: None

Peak wind: South/34 mph (7th)
Average relative humidity: 78% 
Average barometric pressure: 29.94 in. Hg
Comments: None

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

MWN Forecast Accuracy

MWN average temperature error: 1.51 degrees 
MWN forecast temperatures within 2 degrees of actual: 82% 
MWN average dewpoint error: 1.71 degrees 
MWN forecast dewpoints within 2 degrees of actual: 79% 

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

Climate Outlook - July 2021

The July climate outlook for the United States from the Climate Prediction Center is shown below. Above average temperatures are forecast for the western U.S. across the Upper Midwest into the Northeast with highest odds across the Rockies. Below average temperatures are forecast in the Southern Plains to Lower Mississippi Valley. Odds favor below average temperatures for Memphis (38%) versus a 29% chance of above or below normal temperatures. The average temperature for July is 82.8 degrees.

Precipitation is expected to be above normal for much of the southern U.S. into the Mid-Atlantic, with highest odds in the Lower Mississippi Valley. Below average precipitation is forecast for the northern tier of the U.S. For Memphis, odds favor above average precipitation (41%) versus a 26% chance of below average precipitation. Rainfall historically averages 4.82 inches.

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MWN is a NOAA Weather Ready Nation Ambassador Meteorologist Erik Proseus is an NWA Digital Seal Holder

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