Today made day seven out of nine this September with highs of 90 or higher, and the area is running some seven to eight degrees above average so far this month. But change is coming. That process is already underway as some hit-or-miss showers dot the region well out ahead of a cold front that passes through tomorrow. With that front comes increased rain chances, and also some cooler air.
Through Tonight: Spotty showers that have dotted the area this afternoon should tend to want to continue into the evening. Activity may become a little more concentrated for a time, but I would expect a break in the action overnight as well. No widespread much-needed rainfall. A few spots could get a nice little dousing though. We may also hear rumbles through the evening, with that risk tapering overnight. It’s another muggy one as lows reach the near 70 to mid-70s range.
Tomorrow (Thursday): Showers (maybe storms ahead of the front) are likely at times throughout much of the day as a cold front passes through. A weak wave of low pressure could also run along the front, possibly enhancing rainfall. The best odds for a semi-widespread soaking should tend to favor the morning into afternoon period, but showers — some heavy — are possible from before sunrise until near sunset. The rain chance probably does wind down during the evening, if not prior. With all the clouds and precipitation around, highs in the mid-70s to near 80 should do it. However, temperatures may peak early then drop off a good bit. Some modeling even has readings falling well into the 60s during the afternoon.
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Pollen update: Weed pollen is high. Mold spores and grass pollen is moderate. Tree pollen is low.