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When to go · Issaquah

Issaquah in April

Avoid month. Listed as a month to avoid: Nov–Apr for low-elevation rain and mud; check trail and pass conditions.

Key facts

Verdict
Avoid
Temperature
15°C (59°F) / 6°C (43°F)
average high / low
Rain days
15
Crowds
Medium
United States overall
Prices
Medium
United States overall

Verdict

AvoidBest and avoid months for Issaquah

Listed as a month to avoid: Nov–Apr for low-elevation rain and mud; check trail and pass conditions.

Is another month better than April?

April is rated avoid. These months rate higher:

Weather in April

Long-term averages
  • IssaquahHighs around 15 °C (59 °F), lows around 6 °C (43 °F), rain on about 15 days

Festivals and holidays

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

  • Spring break big impact

    March–April · United States

    Students fill Florida, Texas and Mexico beaches; parks busy.

Crowds and prices

Crowds · United States overall
Medium
Prices · United States overall
Medium

United States overall: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.

Compare two months

Weather, crowds and prices for any two months in Issaquah, side by side.

  • Verdict

    Apr: Avoid

    May: Great (better)

  • Daytime high

    Apr: 15 °C (59 °F)

    May: 19 °C (66 °F)

  • Night low

    Apr: 6 °C (43 °F)

    May: 9 °C (48 °F)

  • Rain days

    Apr: 15

    May: 12 (better)

  • Crowds

    Apr: Medium

    May: Medium

  • Prices

    Apr: Medium

    May: Medium

  • Festivals listed

    Apr: 1

    May: 1

April: Listed as a month to avoid: Nov–Apr for low-elevation rain and mud; check trail and pass conditions.

May: Inside Issaquah's best window: May–Oct for dry trails; late Sep–Oct for salmon runs.

Issaquah: figures are long-term averages from this guide, not a forecast.

What to pack

  • A warm layer for the evenings
  • A rain jacket or umbrella and shoes that dry fast

Build the full packing list for your trip →

Across United States in April →