A bicyclist passes near daffodils in Lady Bird Johnson Park in the District on March 17. Although the official start to spring is March 20, there are signs around the area of the coming season. (Matt McClain/The Washington Post)

Temperatures were on the cool side of average today, but that brilliant blue sky and plentiful sunshine made it hard to notice that too much. Our conditions are set to remain rather tranquil into tomorrow out ahead of some rain tomorrow night into Thursday.

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Through Tonight: Skies remain clear and winds are light. Always a good recipe for temperatures to drop. Lows end up in the mid-20s for the cold spots north and west, ranging to as warm as the mid-30s in the city.

View the current weather at The Washington Post.

Tomorrow (Wednesday): Spring officially arrives late in the day, and it’ll be welcomed relatively warmly. Skies are mostly sunny early, but clouds increase with time. Temperatures rise to about 60 for highs. We should stay dry during the day, although a developing coastal storm may deliver some rain by late evening.

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A storm system may be off the coast on Thursday. (Capital Weather Gang and Pivotal Weather)

Rain: A coastal storm is set to take shape Wednesday night and into Thursday. There’s still plenty of uncertainty as to where exactly it tracks, but it should deliver us some precipitation in any event. The American GFS model has been on the comparatively bullish side lately, giving us a rather wet Thursday after rain starts up Wednesday night. The potential for about a half-inch to an inch of rain with this system is there, but not guaranteed. Some rain is likely Wednesday night into early Thursday, but how much and how deep into Thursday remains a bit of a wild card for now.

With a lack of cold air around, this system should be mostly or all rain from this area up to the Northeast, with perhaps some snow in the mountains. Portions of northern New England, especially in high elevation, may get some accumulation out of it.

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