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When to go · St. Louis County

St. Louis County, month by month

The best months for St. Louis County: Apr, May, Sep, Oct. Months to avoid: Jan, Feb, Jul, Aug, Dec.

Month by month

  1. JanuaryAvoidListed as a month to avoid: Jul–Aug (heat and humidity), late Dec–Feb (ice and cold).4 °C / -6 °C, 7 rain daysCrowds: Low
  2. FebruaryAvoidListed as a month to avoid: Jul–Aug (heat and humidity), late Dec–Feb (ice and cold).7 °C / -4 °C, 7 rain daysCrowds: Low · 1 festival or holiday
  3. MarchGoodOutside the best window (Apr–May, Sep–Oct). Across United States: Spring break fills Florida beaches and parks; the desert parks come into season.13 °C / 1 °C, 10 rain daysCrowds: Medium · 2 festivals or holidays
  4. AprilGreatInside St. Louis County's best window: Apr–May, Sep–Oct.19 °C / 7 °C, 11 rain daysCrowds: Medium · 1 festival or holiday
  5. MayGreatInside St. Louis County's best window: Apr–May, Sep–Oct.24 °C / 13 °C, 11 rain daysCrowds: Medium · 1 festival or holiday
  6. JuneGoodOutside the best window (Apr–May, Sep–Oct). Across United States: Rockies and northern parks open; desert heat builds; hurricane season starts. Book parks months ahead.29 °C / 18 °C, 9 rain daysCrowds: High
  7. JulyAvoidListed as a month to avoid: Jul–Aug (heat and humidity), late Dec–Feb (ice and cold).32 °C / 21 °C, 8 rain daysCrowds: High · 1 festival or holiday
  8. AugustAvoidListed as a month to avoid: Jul–Aug (heat and humidity), late Dec–Feb (ice and cold).31 °C / 20 °C, 7 rain daysCrowds: High
  9. SeptemberGreatInside St. Louis County's best window: Apr–May, Sep–Oct.27 °C / 15 °C, 7 rain daysCrowds: Medium · 1 festival or holiday
  10. OctoberGreatInside St. Louis County's best window: Apr–May, Sep–Oct.20 °C / 8 °C, 8 rain daysCrowds: Medium
  11. NovemberMixedOutside the best window (Apr–May, Sep–Oct). Across United States: Quiet between holidays; Thanksgiving week is the busiest travel period of the year.13 °C / 2 °C, 8 rain daysCrowds: Medium · 1 festival or holiday
  12. DecemberAvoidListed as a month to avoid: Jul–Aug (heat and humidity), late Dec–Feb (ice and cold).6 °C / -4 °C, 8 rain daysCrowds: High · 1 festival or holiday