Our 20th day straight with above-normal temperatures has offered little in the way of weather other than calm conditions. That’ll change a bit this evening as some rain moves into the area. It’s a relatively polite rain, with much of it falling overnight. As one of the strongest cold shots of the season is inbound, our time in the warmth is fleeting (for now).

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Through tonight: Showers are increasingly likely through the evening. A few pellets of sleet may mix with the rain initially, mainly north and west of the city (with temperatures in the 40s, no freezing issues). The showers will amount to as much as a tenth or a quarter of an inch overnight and will tend to come in waves, perhaps favoring north and west of the city. Lows will be mainly in the upper 30s and lower 40s. Winds will be light.

View the current weather at The Washington Post.

Tomorrow (Thursday): Occasional showers are possible for much of the day, but anything after the morning should be relatively light and tending to dwindle. Out ahead of a strong cold front, highs are within a few degrees of 60, lowest north and west and highest south or east. The front passes during the afternoon and winds crank out of the northwest.

See Dan Stillman’s forecast through the weekend. And if you haven’t already, join us on Facebook and follow us on Twitter and Instagram. For related traffic news, check out Gridlock.

A wet night outside the Supreme Court a few days ago. (Brian Moulton/Flickr)

Pollen update: Tree pollen is moderate at 29.71 grains/cubic meter. Mold spores are low.

Temperature seesaw ahead: Some of the coldest air of the season is on the way in the next few days. It won’t be long until we’ve warmed back up, though. One possibility ahead is that we do see more-changeable weather than lately, partly given that jet stream wavelengths are starting to increase as we head into spring.

The National Blend of Models forecast for Washington over the next week-plus. (weatherbell.com)

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