May 2011 Warmer And Wetter Than Average

OSWEGO, NY – Last month was a lot wetter, warmer and foggier than normal, according to Bill Gregway, the local observer for the National Weather Service.

The average temperature for May 2011 was 58.7 degrees. That is 2.7 degrees warmer than usual, Gregway said.

It was another warm month,” he noted. “April, remember, was 2.3 degrees higher than average, too.”

It was so foggy at times last month, part of the Port City's skyline seemed to disappear.
It was so foggy at times last month, part of the Port City's skyline seemed to disappear.

The highest temperature came on the last day of the month, 87 degrees. The lowest, 40 degrees, came on the 1st and 4th.

There were no records set last month.

May saw 3 days where the temperature was 80 degrees or higher and 9 days where it was 70 degrees or higher.

There were 15 nights where the low fell into the 40s, Gregway said.

“We had nothing lower than 40 and we didn’t have any 90s,” he added.

Precipitation for May stands at 4.81 inches. That is 1.64 inches higher than average.

Since the first of the year, the precipitation is 21.79 inches, which is 5.32 inches higher than normal.

The greatest precipitation in a 24-hour period was 1.17 inches on the 3rd.

“We also had 1.32 inches, which is more. But, it fell in a 24-hour period over two different days, May 15 and 16,” Gregway pointed out. “We had a lot of rain last month; a lot of rain.”

There were 14 days of measurable precipitation – with streaks of 7, 5 and 4 in a row.

Four days had only a trace and 13 days had no precipitation, including a run of 9 days in a row.

“From the 6th to the 13th we were dry,” Gregway said. “Then, from the 14th to the 19th we received 2.3 inches of rain.”

The area received 45 percent of the possible amount of sunshine. That is 15 percentages below normal.

The number of cloudy days, 17, was 5 above average.

The number of partly cloudy days, 10, was average.

The number of clear days, 4, was 5 below average.

There were 2 thunderstorms. That is 1 below average for May.

However, there were 6 foggy days. That is 4 above normal.

“We had a lot of rain and a lot of fog last month,” Gregway said. “For 3 days (May 19 – 21), there was a continuous fog. And then again on the 27th, 28th and 30th.”

There was no snow last month. May usually receives at least a trace of the white stuff, Gregway noted.

The last frost in the area was (31 degrees) on April 22.

The highest barometric pressure was 30.25 on the 1st. The lowest was 29.57 on the 15th.

The strongest winds were north-northeasterly between 15 – 25 mph with gusts around 28 mph on the 15th.

“We didn’t have a lot of wind last month,” Gregway said. “Just a lot of fog and rain.”

May 2010 was 4.6 degrees warmer than average. The high was 85 degrees on the 31st and the low was 33 degrees on the 9th.

“We also tied a record high (83 degrees on the 2nd) and we had 4 readings in the 30s,” Gregway said. “The last frost was earlier, March 27, 2010.”

At the end of May 2010, total precipitation was 12.44 inches.

That’s a lot drier than this May, Gregway said.

The warmest May is 1998 at 62.6 degrees. Right behind is 1880 with 62.2 degrees.

The coldest is 46.4 degrees in 1917.

May’s highest temperature is 94 degrees, set May 30, 1879. The lowest, 27 degrees, was set May 10, 1909.

May 1931 is the wettest on record – 7.47 inches. And, 1920 is the driest with only 0.18-inch of precipitation.

May 1907 holds the dubious honor of being the snowiest (1.0 inch). And the least snow, zero, is held by a plethora of Mays.