Month guide · St. Louis · United States
St. Louis in August
What August is really like in St. Louis: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: Lightmetro, CC BY-SA 4.0
Quick answer
August is a quieter month with trade-offs. Expect average highs of 31°C (88°F), lows of 21°C (70°F), about 8 rainy days and roughly 13.7 hours of daylight. Hot and humid; the Muny season ends and families make the most of the free museums.
Key facts
- Average high / low
- 31°C (88°F) / 21°C (70°F)
- Rainy days
- About 8
- Daylight
- About 13.7 hours
- Crowds
- Busy
- Hotel prices
- High
Weather in August
August is the 2nd-warmest month in St. Louis: days average 31°C (88°F) against a yearly average high of 19°C (66°F), and nights fall to about 21°C (70°F). Rain falls on roughly 8 of its 31 days. Compared with July (32°C (90°F)), August is about as warm; by September highs drop to around 27°C (81°F).
- Sunrise (15 August)
- About 06:15
- Sunset (15 August)
- About 19:56
- Daylight
- About 13.7 hours
Summer (June–August). Hot and humid days, free outdoor Shakespeare, the Muny, Cardinals games and Fourth of July fireworks at the Arch.
Crowds and prices
On a 1–5 scale, August rates 4 for crowds (the peak is June at 4) and 4 for hotel prices (highest in June). Book accommodation early: August is one of the pricier months.
Events in August
August has no major recurring festival in St. Louis, which usually means easier bookings.
What to do in August
Mild, settled days suit walking, viewpoints and time outdoors.
Architecture · Downtown West
St. Louis Union Station
Opened in 1894, this Romanesque railway station was once one of the busiest in the world.
- Time needed
- 1–3 hours
- Cost
- Mid-priced
- Kids
- Architecture
- History
- Rainy day
Gallery · Grand Center
Pulitzer Arts Foundation
Combine it with the Contemporary Art Museum next door and lunch in the Grand Center arts district.
- Time needed
- 1 hour
- Cost
- Free
- Free
- Art
- Architecture
- Rainy day
Museum · Downtown
National Blues Museum
On Washington Avenue downtown, this museum traces the blues from its roots in the Deep South to its influence on rock and soul, with interactive exhibits that let you mix your own track.
- Time needed
- 1.5 hours
- Cost
- Low cost
- History
- Rainy day
Landmark · Downtown
Gateway Arch
Book the tram for early morning or late afternoon, and arrive early for the airport-style security screening.
- Time needed
- 2–3 hours
- Cost
- Low cost
- Iconic
- Views
- History
- Kids
- Architecture
What to pack
For highs near 31°C, lows near 21°C and 8 wet days: light, breathable clothes, a sun hat and high-factor sunscreen; a packable rain jacket for showers; comfortable walking shoes.
Is August a good time to visit St. Louis?
A quieter month with trade-offs. If your dates are flexible, April–May and September–October are better overall. Compare every month.
St. Louis in other months
Questions travellers ask
+Is August a good time to visit St. Louis?
It is a quieter month with trade-offs. Hot and humid; the Muny season ends and families make the most of the free museums.
+How warm is St. Louis in August?
Average highs are around 31°C (88°F) and lows around 21°C (70°F).
+Does it rain a lot in St. Louis in August?
Expect rain on about 8 days of the month.