D.C.-area forecast: Cool sunshine the next two days before periods of rain this weekend
Sunday is probably the rainier of the weekend days.
8/10: Enjoy the sun today and tomorrow, the weekend brings showery sorrow.
Express forecast
Today: Mostly sunny and breezy. Highs: 48-52
Tonight: Clear skies and calm winds. Lows: 27-33
Tomorrow: Sunny with increasing clouds late. Highs: 46-50
Forecast in detail
We may have gotten spoiled by the last two days of 60-degree weather. Highs closer to 50 the next two days won’t be quite as exciting but, with lots of sun, still pretty nice for late winter. Moisture from the Gulf of Mexico streams into the area through the weekend with showers at times.
Today (Thursday): Mostly sunny skies feel like they should produce another springlike day but a cold front snuck in overnight. That will cap highs right around 50 degrees. Winds will be from the northwest, occasionally gusty but mainly light. Confidence: High
Tonight: Clear skies and calm winds allow temperatures to drop off fairly quickly. Overnight lows drop to the upper 20s to lower 30s. Confidence: High
Tomorrow (Friday): Sunshine hangs in there most of the day but, by late afternoon, clouds should start to gradually increase across the area. Winds are light from the southeast and highs are mainly in the upper 40s. Confidence: High
Tomorrow night: Clouds continue to thicken likely obscuring the full moon. Rain showers are possible starting by mid-evening and continue intermittently overnight. Our colder areas might see some snow or sleet mix in with the rain but it shouldn’t amount to anything. Lows range from the mid-to-upper 30s. Confidence: Medium-High
(((Obscuring the Full Moon. 
)))
A look ahead
Gulf moisture will be streaming across the area Saturday but dynamics are fairly weak for shower production keeping them on the light and scattered side, with the best chance in the morning. Despite the damp conditions highs should reach the mid-50s in most areas. Overnight lows are mainly in the mid-40s while shower chances increase toward morning. Confidence: Medium
Sunday sees a stronger surge of moisture move in from the lower Mississippi Valley with light to moderate rain through much of the day before becoming more scattered at night. Daytime highs are again mainly in the low-to-mid-50s with nighttime lows in the mid-40s. Confidence: Medium
A cold front approaches Monday morning briefly giving an uptick in showers but should also to help finally push drier air into the area by afternoon. Highs are yet again mainly in the mid-50s. Confidence: Medium
https://www.washingtonpost.com/weather/2021/02/25/dc-area-forecast-cool-sunshine-next-two-days-before-periods-rain-this-weekend/?