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Temperature Departure From Average – September 2015 (Through The 21st)
The month of September 2015 has been one of warmth for the Rockies eastward (except areas of the Southeast). Temperatures so far this month have averaged out to be above average, especially in parts of the upper Midwest and Northeast, where monthly temperature records could be approached or broken. Of course, in many areas this means fall is taking its time getting there – but I don’t know of too many people who are willing to complain at the moment.
September Record Warmth?
MTD Average Temperature vs. the September Record
As mentioned above, there are numerous cities that could see their warmest September on record potentially fall as we approach the end of the month. While it is important to note that the month to date data in the middle column is only though the 21st of this month – and that these numbers will continue to fluctuate over the next nine days – you can already see that if the month ended yesterday, a few new records would be set. Some of the records being rivaled go all the way back to the end of the 19th century! Of course, the big question is if the above average temperatures can continue to hold on through the end of the month to allow a few of these records to be set.
Will It Continue?
Forecast 850mb Temps and 500mb Heights Thursday Morning
As we look over the next few days, we will continue to see a pattern that would help promote warmer than average temperatures across these regions. As the jet stream continues to buckle northward, warm air will continue to stream in that direction, as it has done for much of this month so far.
6-10 Day Temperature Outlook Valid For September 27th-October 1st
That pattern will allow for above average temperatures to continue through the end of the month for many locations. Take a look at the temperature outlook for the last few days of September, which is showing a high probability of above average temperatures continuing – especially in the upper Midwest. In some locations, temperatures could be a good 5-15 degrees above average for this time of year. There are also indications that the above average temperatures could last into October for many parts of the nation, so who knows – we could be talking about more records this same time next month.
(CHECK OUT YOUR FORECAST: wx.aerisweather.com)
– Meteorologist D.J. Kayser
