OSWEGO, NY – It wasn’t so much the hot humid days that pushed July’s average temperature above normal. It was the sultry nights, according to Bill Gregway, local observer for the national Weather Service.
The average temperature last month was 73.0 degrees. That’s 2.2 degrees higher than average, Gregway said.
The average temperature during the day was pretty close to average; the overnight lows, on the other hand, were a lot warmer than normal, he explained.
July 2013’s highest temperature was 94 degrees on the 19th. That tied the record for that date set in 1943. The lowest was 51 degrees on the 25th. That broke the record (52 degrees) set in 1984.
There were 2 days when the high was 90 degrees or more.
July also had 15 days where it was 80 degrees or hotter; 7 of them were in a row.
“The overnight low was 70 degrees or higher 11 times, with streaks of 5 in a row and 4 in a row,” Gregway pointed out. “The warmest ‘low’ was 77 degrees on the 19th.”
July 2013 tied with 1931 for the 16th warmest on record, Gregway said, adding, “That’s no big deal.”
Total precipitation last month was 3.63 inches. That’s 0.60-inch above average.
The greatest precipitation in a 24-hour period was 1.48 inches in the 9th.
Since the first of the year, total precipitation stands at 24.22 inches. That is 1.30 inches above average.
There were 12 days with measurable precipitation; 4 of them were in a row.
A trace fell on 2 days, and no precipitation was recorded on 17 days with 8 of them being consecutive.
July received 52 percent of the possible amount of sunshine. That is 17 percentages below normal.
The number of cloudy days, 12, was 4 above average.
The number of partly cloudy days, 13, was 1 above average.
The number of clear days, 6, was 5 below average.
July had 7 thunderstorms, which is 1 more than normal.
There was 1 foggy day and that was 1 above normal.
The highest barometric pressure was 30.31 on the 14th and the lowest was 29.60 on the 23rd.
July’s strongest winds were west-northwesterly, over 30 mph, with gusts around 50 mph on the 19th.
July 2012 was 3.3 degrees warmer than average. It tied with 2020 for 6th warmest July on record. It was also the 9th driest on record, Gregway added.
The warmest July on record is 1921 at 75.8 degrees.
July has been very warm, very recently, Gregway said. Number 3 on the list is 1999. That is followed by 2005, 2006, 2010 and 2011, he pointed out. Only 1878 (at No. 2) breaks the string of recent warm Julys.
The coolest is 1891 with 57.8 degrees.
July is also the month when Oswego’s only triple-digit high temperature was recorded (100 degrees on July 1, 1878). The lowest July temperature is 44 degrees on the 8th in 1969.
The wettest July is 9.35 inches in 1992 and the driest is 0.13-inch in 1853.