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September 2012 Was Warmer, Wetter Than Normal

OSWEGO, NY – September 2012 was warmer than average and a bit wetter than normal, according to Bill Gregway, local observer for the National Weather Service.

The average temperature last month was 63.4 degrees. That is 1.4 degrees above average, according to Gregway.

By late September, summer was in the rear view mirror. But the temperatures remained warm and mild despite some pesky showers.
By late September, summer was in the rear view mirror. But the temperatures remained warm and mild despite some pesky showers.

“Every month last spring has been above average,” he noted. “That is quite a long run.”

The highest temperature for September was 84 degrees on the 3rd and the lowest was 44 degrees on both the 20th and 24th.

There were no records.

September saw 7 days where it was at least 80 degrees or more.

There were 11 days when it was 70 degrees or warmer.

The overnight low slipped into the 40s 9 times last month.

Total precipitation was 5.89 inches at the end of September. That is 1.72 inches above average.

“That is the first month since January where we have had above average precipitation,” Gregway pointed out.

The greatest precipitation in a 24-hour period was 1.98 inches on the 4th.

We also received 1.09 inches on the 24th, Gregway said, adding, “When we did get rain last month, it came in buckets a couple times.”

The total for last month was “no biggie,” he said. The record for September is 8.64 inches set in 2010, he added.

Since the first of the year, precipitation stands at 25.58 inches. That’s still 5.31 inches below average.

There was no snowfall last month, which is a trace less than normal.

Last month had 12 days when measurable precipitation fell, with a stretch of 4 in a row.

There were 2 days with a trace and 16 days with no precipitation, including 3 stretches of 3 in a row and also a 4-day run.

“September was punctuated with some heavy rains. But, we had a lot of dry days, too,” Gregway said.

September had 3 thunderstorm days, which is average and no foggy days, which is 1 below average.

The number of cloudy days, 12, was 2 above average.

The number of partly cloudy days, 12, was 2 above average.

The number of clear days, 6, was 4 below average.

September saw 56 percent of the possible amount of sunshine, which is average.

The highest barometric pressure was 30.32 on the 12th and the lowest was 29.41 on the 18th.

“We had some wind last month, too. There were 6 days when it was 20 mph or more,” Gregway said.

The strongest winds were westerly at 30 mph, with gusts greater than 35 mph, on the 18th. On the 8th there were southwesterly winds gusting more than 30 mph and north-northwesterly winds on the 14th also gusting more than 30 mph, Gregway added.

The warmest September was 2002 (67.1 degrees). That is followed by 66.6 degrees in 1999, 66.0 degrees in 1971 and a 3-way tie for 4th place with 2005, 2007 and 2011 all coming in at 65.6 degrees.