2015年10月 Saint 云 天气 Summary

Saint 云 2015年10月 天气 Summary  

2015 has been a wet year 在圣. 云, MN, but not as wet as 2014 (第四潮湿的年份在圣. 云记录). The reasons that 2015 is tracking lower are:

1. 冬季降雪量少
2. relatively dry August and September

The fall dryness, however, came to an abrupt end in October. Eight of the last nine October days had measurable rainfall, including the last 6 days of the month. 这推动了St。. 云机场 October rainfall to 3.14英寸，0.65英寸以上的2.10月平均49英寸. In those last 6 days of October, 2.这个月有54英寸.下降了14英寸. The six straight days of measurable rain approached the October record of 8 days, set in 1908, 1928, and 1982. Only the 1982 streak produced more rain than the six-day streak this year.

The late month rain broke a dry spell that lasted nearly two months. Between August 25 and October 22, the St. 云机场 had picked up 2.84英寸 of rain, nearly three and a half inches short of the 6.平均33英寸.

Still, the growing season (April 1-October 31) of 2015 has had 28.02英寸，4英寸.比平均水平高出78英寸. That's the 28th highest growing season out of the 123 seasons 在圣. 云记录. 2015年，圣. 云 has had only a little more rain (total of 28.99英寸，3英寸.46 inches above average) than the growing season total.

The mostly dry October allowed temperatures to warm well above average. The October average temperature was 48.6°F (59.最高5华氏度，37度.7°F)为2.比平均温度高9华氏度. The temperature highlight was the record-breaking 83°F 10月11日 high 在圣. 云. 这也是St。. 云's first 80-degree high in October since October 7, 2011. It was the warmest October temperature since St. 云 reached 86 degrees on 10月5日, 2011.

High temperatures in western and northwestern Minnesota broke well into the 90's that day. The last October 90-degree high 在圣. 云 was 90 degrees on October 2, 1992. The only other October 90-degree high was October 2, 1953.

The first hard freeze (low temperature of 28 or colder) wasn't recorded 在圣. 云 until October 16, which was among the latest 20% seasons for first freeze. Since the last spring freeze occured on April 26, there were 171 freeze-free days (among 20% longest periods). 几乎整个明尼苏达州, except the Lake of the Woods, 红湖, 雨湖, and Boundary Waters areas stayed freeze-free through September. There are still pockets of central Minnesota, including the eastern half of Stearns County, western Wright County and much of Meeker County, which have yet to reach 28 degrees. Portions of northern Minnesota have seen teens during our cold pushes.

During the cold push of 10月28日, steady rain turned over to wet snow in much of northern and central Minnesota. There was as much as 2英寸es of snow at Hillman, with 0.2英寸在St. 云机场. 而圣. 平均云量0.7 inch of October snow, only 51 of 124 Octobers have recorded measurable snowfall. Most recently, there was less than an inch in 2013 (0.8英寸)和2012年(0.8英寸).3 inch), and a large October total in 2009 (2.5英寸). 2002年排名 as the second snowiest October 在圣. 6 .云量纪录.4英寸. Ironically, the Halloween Blizzard year of 1991 ranks only 9th, since the bulk of the 13.11月1日的降雨量为4英寸.

The weather pattern continues to be a roller-coaster of temperatures with cool spells followed by warmer periods, as is expected Tuesday and Wednesday. 用于长期预报, the 国家气象局's 气候 Prediction Center is mostly looking for a milder than average November through January 期间, due to the strong El Nino event going on in the Tropical Pacific. The Northern Plains of the US, especially from Minnesota westward into Montana, does tend to have milder than average winters during El Nino, although there have been a few exceptions. However, there is no strong trend for snowfall during an El Nino year.

底线? The long-range forecast experts give us a better than average chance at a mild winter, but there is no strong prediction on snowfall.

我的趋势? I don't make long-range forecasts because I don't believe they are accurate often enough.

    2015年10月统计数据