Month guide · St. Louis · United States
St. Louis in May
What May is really like in St. Louis: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: LittleT889, CC BY-SA 4.0
Quick answer
May is one of the best months to visit St. Louis. Expect average highs of 25°C (77°F), lows of 14°C (57°F), about 12 rainy days and roughly 14.3 hours of daylight. Warm and green, ideal for Forest Park and the Botanical Garden.
Key facts
- Average high / low
- 25°C (77°F) / 14°C (57°F)
- Rainy days
- About 12
- Daylight
- About 14.3 hours
- Crowds
- Moderate
- Hotel prices
- Average
Weather in May
May is the 5th-warmest month in St. Louis: days average 25°C (77°F) against a yearly average high of 19°C (66°F), and nights fall to about 14°C (57°F). Rain falls on roughly 12 of its 31 days. Compared with April (19°C (66°F)), May is warmer; by June highs climb to around 30°C (86°F).
- Sunrise (15 May)
- About 05:49
- Sunset (15 May)
- About 20:05
- Daylight
- About 14.3 hours
Spring (March–May). Blooms in Forest Park and the Botanical Garden, baseball's return and changeable weather with strong storms.
Crowds and prices
On a 1–5 scale, May rates 3 for crowds (the peak is June at 4) and 3 for hotel prices (highest in June). Prices sit in the middle of the year's range.
Events in May
May has no major recurring festival in St. Louis, which usually means easier bookings.
What to do in May
With frequent rain, plan around indoor sights and keep outdoor time flexible.
Museum · Forest Park
Missouri History Museum
Start with the 1904 World's Fair gallery to understand Forest Park before exploring the rest of the park.
- Time needed
- 1.5–2 hours
- Cost
- Free
- Free
- History
- Rainy day
- Kids
Museum · Forest Park
Saint Louis Science Center
The free science centre has hands-on galleries on dinosaurs, space and engineering, the McDonnell Planetarium and a glass bridge over the interstate where children can clock passing cars with radar guns.
- Time needed
- 2–3 hours
- Cost
- Free
- Free
- Kids
- Rainy day
Experience · Downtown
City Museum
Wear closed shoes, kneepads if you have them and clothes you can crawl in, and bring a torch for the caves.
- Time needed
- 3–4 hours
- Cost
- Mid-priced
- Kids
- Iconic
- Rainy day
- Active
- Art
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Religious site · Central West End
Cathedral Basilica of Saint Louis
Inside this Romanesque-Byzantine cathedral, completed in the early 20th century, more than 41 million pieces of glass tesserae cover the domes and walls in one of the largest mosaic collections in the world.
- Time needed
- 45 minutes
- Cost
- Free
- Free
- Art
- Architecture
- Rainy day
What to pack
For highs near 25°C, lows near 14°C and 12 wet days: light layers for the day and a light jacket for the evening; a compact umbrella and waterproof shoes — rain is frequent; comfortable walking shoes.
Is May a good time to visit St. Louis?
One of the best months to visit St. Louis. The other best months are April and September–October. Compare every month.
St. Louis in other months
Questions travellers ask
+Is May a good time to visit St. Louis?
It is one of the best months to visit St. Louis. Warm and green, ideal for Forest Park and the Botanical Garden.
+How warm is St. Louis in May?
Average highs are around 25°C (77°F) and lows around 14°C (57°F).
+Does it rain a lot in St. Louis in May?
Expect rain on about 12 days of the month, so pack for wet weather.