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Draft data. Times, fares and step counts are desk estimates awaiting field checks. Unknown times stay unknown. How we verify

When to go · Issaquah

Issaquah, month by month

The best months for Issaquah: May, Jun, Jul, Aug, Sep, Oct. Months to avoid: Jan, Feb, Mar, Apr, Nov, Dec.

Month by month

  1. JanuaryAvoidListed as a month to avoid: Nov–Apr for low-elevation rain and mud; check trail and pass conditions.8 °C / 2 °C, 18 rain daysCrowds: Low
  2. FebruaryAvoidListed as a month to avoid: Nov–Apr for low-elevation rain and mud; check trail and pass conditions.9 °C / 2 °C, 15 rain daysCrowds: Low · 1 festival or holiday
  3. MarchAvoidListed as a month to avoid: Nov–Apr for low-elevation rain and mud; check trail and pass conditions.12 °C / 4 °C, 17 rain daysCrowds: Medium · 2 festivals or holidays
  4. AprilAvoidListed as a month to avoid: Nov–Apr for low-elevation rain and mud; check trail and pass conditions.15 °C / 6 °C, 15 rain daysCrowds: Medium · 1 festival or holiday
  5. MayGreatInside Issaquah's best window: May–Oct for dry trails; late Sep–Oct for salmon runs.19 °C / 9 °C, 12 rain daysCrowds: Medium · 1 festival or holiday
  6. JuneGreatInside Issaquah's best window: May–Oct for dry trails; late Sep–Oct for salmon runs.22 °C / 11 °C, 9 rain daysCrowds: High
  7. JulyGreatInside Issaquah's best window: May–Oct for dry trails; late Sep–Oct for salmon runs.25 °C / 13 °C, 6 rain daysCrowds: High · 1 festival or holiday
  8. AugustGreatInside Issaquah's best window: May–Oct for dry trails; late Sep–Oct for salmon runs.25 °C / 13 °C, 6 rain daysCrowds: High
  9. SeptemberGreatInside Issaquah's best window: May–Oct for dry trails; late Sep–Oct for salmon runs.22 °C / 11 °C, 9 rain daysCrowds: Medium · 1 festival or holiday
  10. OctoberGreatInside Issaquah's best window: May–Oct for dry trails; late Sep–Oct for salmon runs.16 °C / 8 °C, 15 rain daysCrowds: Medium
  11. NovemberAvoidListed as a month to avoid: Nov–Apr for low-elevation rain and mud; check trail and pass conditions.11 °C / 4 °C, 18 rain daysCrowds: Medium · 1 festival or holiday
  12. DecemberAvoidListed as a month to avoid: Nov–Apr for low-elevation rain and mud; check trail and pass conditions.8 °C / 2 °C, 18 rain daysCrowds: High · 1 festival or holiday