Tidal Basin Weather Forecast

    • 64
    • 86

    Mostly Cloudy

    • 68
    • 80

    Mostly Cloudy

    • 68
    • 84

    Rain Showers Likely

    • 64
    • 77

    Chance Rain Showers

    • 59
    • 68

    Rain Showers Likely

    • 58
    • 64

    Chance Rain Showers

    • 57
    • 66

    Chance Rain Showers

Today 18 Sep District of Columbia

Mostly sunny. Highs in the upper 60s.

Tonight 18 Sep District of Columbia

Mostly cloudy. Lows in the lower 60s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tidal Basin Temperature Statistics

September Temperature

Washington/Reagan National Airport, DC (2.5 miles)

  • Lowest 15 September, 2026

    58.6 °F

  • Average September

    78.4 °F

  • Highest 1 September, 2026

    98.7 °F

Climate (2021–2026)

Washington/Reagan National Airport, DC (2.5 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    69.3 °F
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