When to go · St. Louis
St. Louis, month by month
The best months for St. Louis: Apr, May, Sep, Oct. Months to avoid: Jan, Feb, Jul, Aug.
Month by month
- JanuaryAvoidListed as a month to avoid: Jul–Aug (heat and humidity), late Jan–Feb (cold snaps).5 °C (41 °F) / -5 °C (23 °F), 8 rain days41 °F (5 °C) / 23 °F (-5 °C), 8 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jul–Aug (heat and humidity), late Jan–Feb (cold snaps).8 °C (46 °F) / -3 °C (27 °F), 7 rain days46 °F (8 °C) / 27 °F (-3 °C), 7 rain daysCrowds: Low · 1 festival or holiday
- MarchGoodOutside the best window (Apr–May, Sep–Oct). Across United States: Spring break fills Florida beaches and parks; the desert parks come into season.14 °C (57 °F) / 3 °C (37 °F), 10 rain days57 °F (14 °C) / 37 °F (3 °C), 10 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGreatInside St. Louis's best window: Apr–May, Sep–Oct.20 °C (68 °F) / 8 °C (46 °F), 11 rain days68 °F (20 °C) / 46 °F (8 °C), 11 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside St. Louis's best window: Apr–May, Sep–Oct.25 °C (77 °F) / 14 °C (57 °F), 11 rain days77 °F (25 °C) / 57 °F (14 °C), 11 rain daysCrowds: Medium · 1 festival or holiday
- 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.30 °C (86 °F) / 19 °C (66 °F), 10 rain days86 °F (30 °C) / 66 °F (19 °C), 10 rain daysCrowds: High
- JulyAvoidListed as a month to avoid: Jul–Aug (heat and humidity), late Jan–Feb (cold snaps).32 °C (90 °F) / 22 °C (72 °F), 9 rain days90 °F (32 °C) / 72 °F (22 °C), 9 rain daysCrowds: High · 1 festival or holiday
- AugustAvoidListed as a month to avoid: Jul–Aug (heat and humidity), late Jan–Feb (cold snaps).31 °C (88 °F) / 21 °C (70 °F), 8 rain days88 °F (31 °C) / 70 °F (21 °C), 8 rain daysCrowds: High
- SeptemberGreatInside St. Louis's best window: Apr–May, Sep–Oct.27 °C (81 °F) / 16 °C (61 °F), 8 rain days81 °F (27 °C) / 61 °F (16 °C), 8 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside St. Louis's best window: Apr–May, Sep–Oct.21 °C (70 °F) / 9 °C (48 °F), 9 rain days70 °F (21 °C) / 48 °F (9 °C), 9 rain daysCrowds: Medium
- 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 (55 °F) / 3 °C (37 °F), 9 rain days55 °F (13 °C) / 37 °F (3 °C), 9 rain daysCrowds: Medium · 1 festival or holiday
- DecemberMixedOutside the best window (Apr–May, Sep–Oct). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.7 °C (45 °F) / -2 °C (28 °F), 8 rain days45 °F (7 °C) / 28 °F (-2 °C), 8 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in St. Louis, side by side.
Verdict
Apr: Great
May: Great
Daytime high
Apr: 20 °C (68 °F)68 °F (20 °C)
May: 25 °C (77 °F)77 °F (25 °C)
Night low
Apr: 8 °C (46 °F)46 °F (8 °C)
May: 14 °C (57 °F)57 °F (14 °C)
Rain days
Apr: 11
May: 11
Crowds
Apr: Medium
May: Medium
Prices
Apr: Medium
May: Medium
Festivals listed
Apr: 1
May: 1
April: Inside St. Louis's best window: Apr–May, Sep–Oct.
May: Inside St. Louis's best window: Apr–May, Sep–Oct.
St. Louis: figures are long-term averages from this guide, not a forecast.