Potomac River - Marbury Point Weather Forecast
- 73
- 90
Severe Tstms
- 65
- 85
Chance Thunderstorms
- 64
- 80
Mostly Sunny
- 66
- 81
Partly Sunny
- 67
- 82
Partly Sunny
- 71
- 87
Slight Chance Thunderstorms
Today 21 Jul District of Columbia
Mostly cloudy. A chance of Showers and Thunderstorms in the Morning, then Showers and Thunderstorms in the afternoon. Some Thunderstorms may produce damaging Winds and large hail in the afternoon. Highs in the lower 90s. South Winds 10 to 15 Mph. Chance of rain 80 percent.
Tonight 21 Jul District of Columbia
Mostly cloudy with scattered Showers and Thunderstorms. Lows in the mid 70s. South Winds around 5 Mph. Chance of rain 40 percent.
Potomac River - Marbury Point Temperature Statistics
July Temperature
Washington/Reagan National Airport, DC (1.9 miles)
Lowest 13 July, 2026
69.7 °FAverage July
84.3 °FHighest 4 July, 2026
103.6 °F
Climate (2021–2026)
Washington/Reagan National Airport, DC (1.9 miles)
Average Low 2021–2026
52.4 °FAverage 2021–2026
60.5 °FAverage High 2021–2026
69.3 °F