D.C.-area forecast: Temperatures continue to cool slightly this weekend, but sunshine increases.
Breeze is most pronounced tomorrow, with a bit continuing into Sunday.
7/10: With a Friday bonus point, it’s a tranquil and generally comfortable end to the week.
Express forecast
Today: Mostly cloudy. Highs: Near 60 to low 60s.
Tonight: More clouds than not. Lows: Mid-40s.
Tomorrow: More sun than clouds. Breezy. Highs: 52-59.
Sunday: Mostly sunny, slight breeze. Highs: Mid-50s to around 60.
Forecast in detail
We have fairly tranquil weather this weekend, even if cloudy at times. Our temperatures slowly trend cooler but could warm up again briefly Monday. That’s when Sunday night’s rains may turn gusty as they try to exit. A chillier weather pattern shift may arrive as early as Tuesday.
Today (Friday): Variably cloudy skies try to give way to more sunshine as the day wears on. High temperatures are generally near 60 with some low 60s in the typically warmer spots that win the sunshine lottery and see more than others. Light north breezes generally keep to around 5 mph. Confidence: Medium-High
Tonight: Skies may show some stars at times but generally remain partly to mostly cloudy. Slight north-northwesterly breezes should fully calm by late night. A sprinkle, brief drizzle and patchy fog are possible near dawn. Low temperatures bottom out in the mid-40s. Confidence: Medium-High
Tomorrow (Saturday): Our lowering temperature trend continues, with high temperatures generally in the 52-59 degree range. Northwesterly breezes may gust near 20 mph a few times, assisting in transporting in this noticeably cooler air. Sunshine slowly tries to win the day, especially by the afternoon. At least we can say this is closer to what November feels like, on average. Confidence: Medium-High
Tomorrow night: Skies should stay fairly clear, and northwest breezes in the evening should calm by late night. Low temperatures manage to dip into the 30s regionwide. Confidence: Medium-High
A look ahead
Sunday: Skies should stay mostly sunny until perhaps late afternoon, as clouds move in more noticeably. Southerly breezes are around, but generally light, under 10 mph. If we see a longer duration of southerly breezes around and above 10 mph combining with late-arriving clouds after sunset, we could see high temperatures reach for 60 degrees or so. For now, let’s call it mid-50s to around 60. Confidence: Medium-High
Sunday night: Clouds continue to increase, but you may be able to see — early on in the evening — the rising “Frosty” full moon. We could see some showers and a period of rain move in later, perhaps by late evening. Breezes pick up by dawn, out of the east-southeast. Low temperatures have a hard time dipping below the low 40s (briefly). It’s possible that many locations see temperatures rise toward and above 50 degrees as we get nearer dawn. Confidence: Medium
Gusty rains with showers and perhaps storms on Monday may continue, but exact timing and amounts of rain and winds are going to become clearer as the weekend progresses. We could see a quick inch of rain and wind gusts near 40 mph or higher, potentially including some damaging winds. Stay tuned. High temperatures should reach at least 60 in most areas, but if we see a prolonged burst of southerly winds transporting in warmer air from near the Gulf of Mexico, we could soar higher. Confidence: Low
Much chillier air arrives Tuesday, when high temperatures could struggle to reach the low to mid-40s. (This is roughly equivalent to our coldest high-temperature averages, which we experience in January each year!) With showers so far trying to exit during the morning, we may see sunshine in the afternoon. Let’s call it partly sunny, but remember to bundle up. On top of these temperatures, we’ll probably have some breezes to contend with. Confidence: Low-Medium
https://www.washingtonpost.com/weather/2020/11/27/dc-area-forecast-temperatures-continue-cool-slightly-this-weekend-sunshine-increases/?