Annandale, VA – September will feel more like early fall than summer in Virginia as cool air settles in by Labor Day. Overnight lows will dip into the 50s across Fairfax County, offering a noticeable shift for early risers and holiday travelers.
According to the National Weather Service, Labor Day itself will bring sunshine and highs near 80, but cooler nights will dominate the week ahead. Drivers along I-495 and I-66 should prepare for crisp morning commutes, while residents can expect bright afternoons that stay comfortable in the upper 70s.
Sunday night will begin the cooling trend with lows near 56. By Tuesday, highs will hover just under 80 degrees, while overnight temperatures continue to fall into the upper 50s. The weather pattern highlights the influence of a broader cold push sweeping from the Midwest, where states like Illinois and Ohio will see temperatures well below average.
Locally, the pleasant stretch should ease air conditioning use and offer ideal weather for outdoor Labor Day events. Residents planning backyard cookouts or trips to Lake Accotink can count on mostly sunny skies and light winds. Still, with clear nights, families should grab a jacket or sweater before heading out in the evening.
Looking further ahead, scattered showers return Thursday into Friday, signaling the next shift in Virginia’s September weather pattern.
Five-Day Forecast for Annandale, VA
- Sunday: Mostly sunny, high near 78, low 56.
- Labor Day Monday: Sunny, high near 80, low 58.
- Tuesday: Mostly sunny, high near 79, low 58.
- Wednesday: Partly sunny, high near 80, low 61.
- Thursday: Chance of showers, high near 81, low 80.
