2020年7月 Saint 云天气摘要

Sporadic Rains Become More Widespread and Frequent in July

2020年7月1日. 云天气摘要

More Rain in July Than Feb-June Combined

Since the snows stopped coming at the start of February, much of Minnesota had been dry. 在圣. 云，只有4.35 inches fell between February and June (4.比平均水平低68英寸). However, the pattern turned around 与 much more frequent rainfall in July. 圣. 云 Municipal Airport picked up 5.39英寸，2英寸.比平均水平高出08英寸.

Most Areas With Short-Term Rain Shortages in West Central and Northeastern Minnesota Eased

Given that thunderstorms were primarily responsible for the rainfall, the amounts varied widely 与 a good chunk of Stearns County and points north having more than 6 inches (red on the July Minnesota rainfall map 从NWS). Some of the heaviest rain fell in west central and northeastern Minnesota which had the largest rainfall deficit through June (see comparison of July 28 and 6月30日 on the 美国干旱监测). 仍然, both the near ground and sub-ground moisture was rated as being adequate or surplus in 90 percent of Minnesota on the weekly Minnesota Crop Condition Report 由六月二十七日起( 新的一个 将很快提供).

Severe 天气 Accounted for One Deadly Tornado, Hail and Strong Winds Plus the Rain

的 rainfall in July was, at times, too much. On 7月25日-26, between 5 and 8 inches of rain fell in the Minnesota River Valley (see 7月25日-26 Extreme Southern Minnesota Rainfall ). 其他风暴爆发( 7月8日-EF4 tornado in west central Minnesota that killed one person in a farm building; July 17-18 large hail and widespread wind damage) produced damaging storms across much of the state. 的 storms merely produced heavy rainfall 在圣. 云与1.64英寸 on 7月8日, just short of the 1.77英寸日记录, 1.7月18日是48英寸，0.7月26日，91英寸.

Frequently Above 90, But Only a Bit Warmer Than Average

的 warmer than average temperature trend that began in June continued in July. 的 St平均温度. 云 是72.0度，1.比平均水平高7度. It was the warmest July since 2012 and featured 6 days 与 a high of at least 90 degrees. 仍然, there weren't many extremely warm days, so a cool period in late July, featuring the only high cooler than 75 (22nd) and the only 2 lows cooler than 55 (22nd and 23rd) pulled the average closer to the long term average. Minnesota was frequently not far away from the real heat that dominated the central and southern Rockies and much of the High Plains (Billings had 11 days 与 a high of at least 90, while Omaha had 16 such warm days), but either clouds from thunderstorms or occasional Canadian air masses kept the heat down to some degree.

到目前为止, the summer of 2020 is consistent 与 the summers seen in the 2005, 2006, and 2010 through 2013 与 warmer than average readings and double digit amounts of days 与 a high of 90 or higher. 的 main departure in recent years is how few really hot days there have been. 和, the overall Northern Hemisphere Summer has been brutal 与 heat waves from the Sahara stretching across eastern Europe and Siberia, plus the persistent high heat across the Southern US.

的 night of 7月25日 had a low of 73 degrees, the second low of 70 or higher 在圣. 这个夏天的云. 在一个普通的夏天, 这样的日子有3天, but the summers from 2014 through 2019 only had 6 of these days combined. Such warm nights when lows do not drop below 70 are most difficult for people susceptible to the heat who do not have air conditioning.

的 beginning of August has featured the coolest air seen since mid-June (first high cooler than 75 and first low cooler than 50 since June), but the hot and humid air isn't that far away.

     2020年7月统计数据