Best year time to visit Old Iliamna

General weather information about Old Iliamna

Average annual temperature is 2.4 °C

Absolute maximum temperature: 23.7 °C

Absolute minimum temperature: -24.1 °C

Number of sunny days: 97 days

Number of rainy days: 168 days

Number of snow days: 100 days

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* Weather data for Old Iliamna United States is based on climate observations for 2026 year

Old Iliamna air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)3.62.33.28.511.521.022.323.715.210.88.42.5
Average daytime temperature (°C)1.0-2.5-1.90.76.512.716.316.611.36.61.2-4.3
Average temperature (°C)-1.3-5.5-4.9-2.54.49.713.013.58.23.6-1.4-8.2
Average night temperature (°C)-3.5-8.4-7.4-5.12.57.410.311.15.71.4-3.5-11.8
Absolute minimum temperature (°C)-13.6-19.3-16.1-16.4-2.21.56.18.82.1-3.7-16.2-24.1

Old Iliamna monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)7.010.013.015.018.018.018.016.014.011.08.06.0
Daylight mean duration (h)6.99.211.814.617.118.617.915.512.910.27.66.1
Daylight minimum duration (h)6.08.010.013.015.018.016.014.011.08.06.05.0
Sunshine mean duration (h)1.03.47.18.84.24.27.56.26.85.62.21.2
Precipitation (mm)130981017422123021621715044176101
Sunny days3515134210781776
Rainy days9301262821242214164
Snow days19201616100000721

Old Iliamna - weather forecast by months

Old Iliamna weather in januaryOld Iliamna weather in februaryOld Iliamna weather in marchOld Iliamna weather in aprilOld Iliamna weather in mayOld Iliamna weather in juneOld Iliamna weather in julyOld Iliamna weather in augustOld Iliamna weather in septemberOld Iliamna weather in octoberOld Iliamna weather in novemberOld Iliamna weather in december

Best time to visit Old Iliamna:

The best time to visit Old Iliamna during the most sunny months:

  • March — 7.1(h)
  • April — 8.8(h)
  • July — 7.5(h)
  • August — 6.2(h)
  • September — 6.8(h)

Months with the longest average daylight duration in Old Iliamna:

  • May — 17.1(h)
  • June — 18.6(h)
  • July — 17.9(h)

The largest precipitation sum in Old Iliamna is at

  • May — 221(mm)
  • June — 230(mm)
  • July — 216(mm)
  • August — 217(mm)

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    Frequently asked questions

    When is the best time to visit Old Iliamna?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Old Iliamna.
    What is the weather like in Old Iliamna?
    See average temperature, rainfall and daylight hours for Old Iliamna by month in the table above.
    How many sunny days does Old Iliamna have?
    The monthly weather statistics above show sunshine and rainfall patterns for Old Iliamna throughout the year.