Spring-summer rainfall above normal across Upper Peninsula
By JIM ANDERSON
IRON MOUNTAIN – Summer showers have been sporadic in Iron Mountain-Kingsford, but precipitation since the end of winter remains above average, according to the National Weather Service.
Water-equivalent precipitation from March through July totaled 16.31 inches, which was 2.33 inches above normal, said Kevin Crupi, weather service meteorologist at Marquette.
Other locations in the Upper Peninsula have been wetter. At Houghton, the 20.69 inches of precipitation from March through July established a new record. Ironwood has received 28.01 inches, the second-most on record, while Newberry’s 19.22 inches ranks fourth all-time, Crupi said.
The least precipitation in July occurred over the central Upper Peninsula, including Iron Mountain-Kingsford, which tended to miss some of the month’s heavier rains.
“Only 2.43 inches of rain fell there, about 70 percent of the normal 3.45 inches,” Crupi said. “Large variations in precipitation over short distances is not unprecedented in the summer,” he continued. “Just down the road in southeast Dickinson County, Norway logged a more representative 4.06 inches.”
It was the wettest July on record at Newberry, which received 8.46 inches of rain.
At Iron Mountain-Kingsford, the average temperature in July was 68.5 degrees, which was 0.5 inches above normal. The highest reading was 94 degrees on July 16, 17 and 18. The lowest was 45 degrees on July 2 and 24. The high temperature on July 28 was a mere 55 degrees, a new record for the month.
Statistics for the Iron Mountain-Kingsford Treatment Plant cooperative observer site are based on records that began in 1931. Normals used are for the period 1981 through 2010.
Looking ahead to fall, the Climate Prediction Center forecasts a greater than climatological chance of above-normal temperatures across the Upper Peninsula for September through November. Normal precipitation trends are predicted.
Some other temperature and precipitation observations across the Upper Peninsula in July:
– Ironwood, average temperature 65.1 (0.7 degrees below normal), precipitation 6.90 inches (2.8 inches above normal).
– Copper Harbor, average temperature 62.5 degrees, precipitation 6.72 inches.
– Baraga, average temperature 66 degrees, precipitation 7.09 inches.
– Big Bay, average temperature 64.4 degrees, precipitation 6.33 inches.
– Marquette, average temperature 65.8 (0.8 degrees below normal), precipitation 4.65 inches (1.83 inches above normal).
– Munising, average temperature 64.2 (0.6 degrees below normal), precipitation 5.11 inches (1.84 inches above normal).
– Newberry, average temperature 66.5 (0.9 degrees above normal), precipitation 8.46 inches (5.36 inches above normal).
– Iron River, average temperature 64.5 degrees, precipitation 3.95 inches
– Garden Corners, average temperature 66.3 degrees, precipitation 6.3 inches.
– Manistique, average temperature 64.1 (0.6 degrees below normal), precipitation 7.15 inches (4.11 inches above normal).
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