FORECAST IN DETAIL
The transition to a much-anticipated colder pattern occurs Wednesday, but we’ve got two milder-than-average days to enjoy first. We’ll warm up to the 50s today and perhaps break 60 Tuesday before 40s and then 30s close out the week. Late this week, we do have a pretty good chance to see our first snowflakes of the season, but whether they amount to anything is questionable.
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Today (Monday): High pressure is in control, so we can expect plenty of sunshine and pleasantly cool afternoon temperatures. After most of us start the day in the 30s, highs climb into the mid-50s this afternoon with hardly a breeze. Confidence: High
Tonight: Mostly clear skies early become partly cloudy as the night wears on. The added cloud cover and the introduction of a light breeze from the south mean it’s not quite as cold — with lows from the upper 30s in our colder areas to the mid-40s downtown. Confidence: Medium-High
Tomorrow (Tuesday): This is the week’s mildest day, although clouds do increase as the day wears on. We should make a run at 60, maybe the low to mid-60s if we manage more intervals of sunshine. There’s a chance of showers in the afternoon — especially in our western areas, but the main slug of rain should hold off until the evening or overnight hours. Winds are from the south around 10 mph. Confidence: Medium-High
Tomorrow night: Rain showers are likely, as the pattern-changing cold front sweeps through the region. A few heavier downpours are possible. Low temperatures range through the 40s. Confidence: Medium-High
A LOOK AHEAD
Colder air starts to spill into the region on Wednesday, but it won’t really become noticeable until the late afternoon or evening hours. During the day, it’s partly to mostly sunny and breezy, with highs in the low 50s. Partly cloudy and cold at night, with lows in the mid-20s in our colder suburbs to the low 30s downtown. Confidence: Medium-High
We’ll need to watch a storm developing off the coast because if it develops fast enough and close enough to shore, it could produce a period of snow late Thursday into Friday. More likely, the storms stay safely away and both days are variably cloudy with just a small chance of passing flurries. It’s cold with highs 40-45 (these would be lower if the storm is closer to the coast) and lows in the 20s to near 30. Confidence: Low-Medium
A fast-moving clipper brings another chance of light snow or flurries over the weekend — the best chance on Saturday — as it turns even colder. Whether any snow accumulates will depend on how strong the clipper is and exactly where it tracks. Highs Saturday are near 40 and only in the 30s Sunday, with overnight lows mostly in the 20s. Confidence: Low-Medium
SNOW POTENTIAL INDEX
A daily assessment of the potential for at least 1 inch of snow in the next week, on a 0-10 scale.
1/10 (→): Two chances for snow between Thursday and Sunday, but ingredients don’t seem ideal for accumulation.