PM Update: Duration and intensity of any rain increases tonight and especially Sunday


Noticeable weather change today, eh? Hope you have been able to make the most of our cooler, damp day. We should get warmer and stickier tomorrow as the rain chances increase. We may even see some late-day sunshine, which could spark a thunderstorm or two.

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Through tonight: Early evening and a bit before dawn have the highest chances of seeing a period of steadier rain. Otherwise, it’s occasional showers, drizzle and fog that dots the region. Temperatures don’t cool much at all, into the low to mid-50s, perhaps at their coolest point around midnight. Breezes from the east and southeast may be fairly constant around 10 mph.

View The Washington Post current weather

Tomorrow (Sunday): Showers remain possible almost anytime. Chances of steadier rain increase as a morning warm front approaches. Temperatures behind the front should make it into the upper 60s to low 70s by late day as we see a few peeks of sun. The more sunshine, the higher the chances of afternoon thunderstorms. Breezes from the south and southeast pick up a bit behind the warm front into the afternoon.

Overnight, thunderstorms and showers remain possible, but the bulk of the activity should move east of the area. Skies are mainly cloudy as sticky temperatures hover within a few degrees of 65.

Some allergen relief could last until Tuesday

I hope fellow allergy sufferers are enjoying the pollen reduction benefit to this weather. Here’s the pollen profile contained in the last local reading, which is now being reduced by this cooler, cloudy, damp weather:

The tree pollen trend continues to look past-peak despite still averaging at a high level:

While rainfall currently offers some relief, it brings a downside once it ends. Closer to ideal conditions for tree and grass pollen production may return Tuesday, if not later Monday, as warmth and periodic sunshine could spawn growth.

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