Katmai National Park Weather Forecast

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    Rain

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    Rain

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    Rain

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    Chance Rain Showers

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    Rain Showers Likely

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    Rain Showers Likely

Today 20 Aug Lake Iliamna / Nila Vena / Nanvarpak

Showers. Highs in the upper 50s. Light Winds.

Tonight 20 Aug Lake Iliamna / Nila Vena / Nanvarpak

Mostly cloudy with scattered Showers. Lows around 50. Light Winds becoming variable 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Katmai National Park Temperature Statistics

August Temperature

Igiugig (32.3 miles)

  • Lowest 1 August, 2026

    44.1 °F

  • Average August

    56.9 °F

  • Highest 10 August, 2026

    75 °F

Climate (2021–2026)

Igiugig (32.3 miles)

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  • Average Low 2021–2026

    28.4 °F

  • Average 2021–2026

    35 °F

  • Average High 2021–2026

    41.5 °F
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