Weather

September’s dry and warm pattern rolls on for many more days

I know nearly everyone loves this weather. Bright blue skies, warm temperatures, and pleasant levels of humidity are tough for anyone to complain about. For those of you working outside or having to be outside for extended periods, it’s easy to take this kind of weather pattern. I imagine teachers having a tough time getting the kids back inside from recess on these flawless days.

I Want Rain
The long stretch of dry and warm weather continues today and will actually continue basically unabated for at least another week. While this is certainly beautiful weather to look at, I wouldn’t be me without mentioning I’d love to see a day or two of widespread rain. It’s just not good for trees, shrubs, and lawns to go into winter too dry, and, at some point in a few weeks, it will be too late for any rain to help most plants for this year. Once everything goes dormant for the season, the water doesn’t really do too much. If you are overseeing lawns, moving shrubs, or buying new plants, be sure you are watering thoroughly.

You Can Thank Sinking Air
High pressure, with large areas of sinking, warming, and drying air, is responsible for this type of weather. September and October often bring some of the longer periods of dry weather for the year. The atmosphere is no longer as humid, so the risk of afternoon thunderstorms has decreased and the lack of big contrasts between deep cold and Gulf Coast or Atlantic warmth prevents major storms from forming. Although the northern hemisphere is sliding towards winter, it’s a slow slide in September and much of October.

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Record Month?
Temperatures this month are running over 4 degrees above average, and if we continued this pace through the second half of the month, it would easily become the warmest September on record. With two weeks left in the month and the current pattern, it’s likely this is going to end up in the top-five warmest Septembers and could eclipse 1983’s number-one spot.

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Speaking of records, high temperatures tomorrow and Friday could near record territory, and there is a chance one or two of the climate locations below may set a new daily record. Humidity will slowly increase in the weekend, but should stay under the oppressive level. When dew points reach the upper 60s to 70 degrees, most of you have had enough. This morning’s dew points are still in the comfortable upper 50s, thus one of the reasons it feels somewhat fall-like in the early hours of the morning.

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The weather map for the rest of the week shows high pressure parked to our south. These big highs keep any wet weather at bay. On Sunday, a front will push that high out to sea, and then a new one will come in right behind it. The air is so dry with the front, I don’t expect any showers.

You can follow more of my weather forecast on Twitter @growingwisdom

The second high brings somewhat cooler air into the area, so I don’t expect widespread 80s next week, but temperatures will still be pleasantly warm and humidity levels low enough that you won’t notice it.

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The final map this morning is the expected rainfall over the next five days. As you can see, we continue bone dry.

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