For the next 24 hours, like the past several, we’ll have episodic periods of scattered showers, which may not amount to a whole lot. A slow moving front is crawling through the region, but it’s not packing a whole lot of energy. Persistent cloud cover keeps it mild at night and not too warm during the day.
Through Tonight: Roads will be wet for the evening commute, but unless you’re traveling north and east of the District, you probably won’t need the wipers. Overnight, we may see more showery batches move through (40 percent chance), but substantial rain of more than 0.05-0.1” isn’t all that likely. Low temperatures 60-65.
Wednesday: Another cloudy, fairly mild day - although the skies may brighten at times. The cold front comes through early - but it’s fairly diffuse. That means clouds and showers linger behind it and cooler air is slow to filter in. The best chance of showers (60 percent) is during the afternoon (40 percent chance of showers in the morning), but odds - especially for anything substantial - are best east of town (where they may be some thunder). Highs reach the low-to-mid 70s. Unfortunately for gardens, rainfall potential isn’t much better than 0.1-0.25”.
Pollen: Before the rain showers, tree counts were HIGH at 98 grains/cubic meter as were grass counts at 31 grains per cubic meter.