Monday, July 6, 2015

June 2015 Climate Data and Forecast Accuracy

June Recap

Temperatures and precipitation were above normal in Memphis in May and that trend continued in June. In fact, daily average temperatures were at or above normal for 22 consecutive days during the month. Precipitation was below normal until a deluge of more than 2" to end the month. However, most of the metro was below normal for the month. Through the first half of the year, Memphis International Airport still has a year-to-date rainfall deficit of 3.22", or about 88% of normal. As far as temperatures go, the year-to-date average temperature is 1.1 degrees below normal. Both of these numbers are trending closer to normal though over the past few months.

Despite above normal precipitation at the airport, most of the metro was below normal for the month of June, some areas by a couple of inches.

There were a few rounds of thunderstorms in the metro with scattered severe weather reports. Wind damage reports were received on the 9th and 26th in the metro and on the 24th in Tunica County. There was also both hail and wind reports in the metro on the 30th.

Memphis International Airport, Memphis, TN

Average temperature: 80.7 degrees (1.1 degrees above average)
Average high temperature: 89.9 degrees (1.0 degrees above average)
Average low temperature: 71.5 degrees (1.2 degrees above average)
Warmest temperature: 98 degrees (24th)
Coolest temperature: 60 degrees (2nd, 4th)
Records set or tied: None.
Comments: Every day from the 5th through the 26th was above normal, bookended by below normal temperatures to start and end the month.

Monthly total: 4.47" (0.84" above average)
Days with measurable precipitation: 8 (1.0 day below normal)
Wettest 24-hour period: 2.07" (29th)
Total Snowfall: None
Records set or tied: None
Comments: Over 2" of rain on the 29th resulted in a drier than normal month ending wetter than normal. It was the only day with more than 1" of rainfall for the month. It was also the second wettest June 29th on record behind the 5.87" recorded just one year earlier in 2014.

Peak wind: Northwest/41 mph (5th)
Average wind: 6.8 mph
Average relative humidity: 69%
Average sky cover: 50%

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

Cirrus Weather Solutions /, Bartlett, TN

Average temperature: 79.8 degrees
Average high temperature: 90.1 degrees
Average low temperature: 70.2 degrees
Warmest temperature: 96.7 degrees (24th)
Coolest temperature: 55.6 degrees (3rd)
Comments: None

Monthly total: 3.28" (automated rain gauge), 3.39" (manual CoCoRaHS rain gauge)
Days with measurable precipitation: 9
Wettest date: 0.77" (29th) (via automated gauge)
Total Snowfall: None
Comments: None

Peak wind: Northwest/28 mph (8th)
Average relative humidity: 77%

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

MWN Forecast Accuracy

MWN average temperature error: 1.62 degrees
MWN forecast temperatures within 2 degrees of actual: 78%
MWN average dewpoint error: 1.62 degrees
MWN forecast dewpoints within 2 degrees of actual: 82%

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

Follow MWN on Facebook, Twitter, and Google+
Visit on the web or on your mobile phone.
Download our iPhone or Android apps, featuring StormWatch+ severe weather alerts!

No comments: