Franconia Weather Forecast
- 62
- 81
Slight Chance Rain Showers
- 62
- 70
Rain Showers Likely
- 63
- 70
Rain Showers Likely
- 63
- 79
Mostly Sunny
- 63
- 86
Mostly Sunny
- 61
- 80
Slight Chance Thunderstorms
Today 15 Sep Arlington/Falls Church/Alexandria
Partly sunny. Highs in the lower 80s. Northeast Winds 5 to 10 Mph.
Tonight 15 Sep Arlington/Falls Church/Alexandria
Partly cloudy. Lows in the mid 60s. Light and variable Winds.
Franconia Temperature Statistics
September Temperature
Fort Belvoir (4.3 miles)
Lowest 9 September, 2025
49.8 °FAverage September
67.5 °FHighest 6 September, 2025
92.7 °F
Climate (2020–Present)
Fort Belvoir (4.3 miles)
Average Low 2020–2025
47.8 °FAverage 2020–2025
58.1 °FAverage High 2020–2025
68.3 °F