Ideal weather days in St. Louis
The best time to visit St. Louis for warm, dry weather is September and October, with 19 to 23 such days a month.
How many days here suit you?
Set your ideal day. Each day measured at St. Louis's weather station in 2023–2025 is checked against it.
They're most common in September and October.
This station doesn't record cloud cover, so the sky setting is left out here.
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Your ideal days in St. Louis, month by month
Why the other days don't count
- Too cold109
- Too wet90
- Too hot50
- Too windy43
A day can fail more than one test.
Warm and dry, beach and mild days
With the Warm & dry preset (a high of 18–33 °C, no more than 1 mm of rain, wind under 20 km/h), St. Louis averaged 143 days a year in 2023–2025. Every number here is counted from real measured days in the United States, not from climate averages.
Beach days (a high of 26–35 °C, almost no rain, mostly sunny) are most common in September (up to 14 a month, 66 a year). Mild, still days (16–26 °C, light wind) are most common in October and November (up to 8 a month, 36 a year).
What spoils the other days
Most of the days that don't count are too cold (a high under 18 °C): 109 a year, mostly in December, January and February. Another 90 are wet (more than 1 mm of rain), mostly in March to July and December to January. A day can fail more than one test.
St. Louis weather, month by month
| Month | Typical high | Rain days | Windy days | Clear days | Warm & dry days |
|---|---|---|---|---|---|
| January | 7 °C 44 °F | 10 | 6 | 9 | 1 of 31 |
| February | 15 °C 59 °F | 6 | 4 | 14 | 7 of 28 |
| March | 20 °C 67 °F | 9 | 10 | 12 | 13 of 31 |
| April | 24 °C 74 °F | 10 | 8 | 10 | 14 of 30 |
| May | 28 °C 82 °F | 11 | 3 | 7 | 18 of 31 |
| June | 32 °C 90 °F | 8 | 2 | 8 | 11 of 30 |
| July | 34 °C 93 °F | 10 | 0 | 3 | 8 of 31 |
| August | 32 °C 90 °F | 7 | 0 | 6 | 14 of 31 |
| September | 31 °C 87 °F | 7 | 1 | 10 | 19 of 30 |
| October | 26 °C 79 °F | 5 | 3 | 17 | 23 of 31 |
| November | 19 °C 65 °F | 6 | 3 | 12 | 11 of 30 |
| December | 12 °C 54 °F | 13 | 4 | 8 | 3 of 31 |
| Year | 103 | 43 | 115 | 143 of 365 |
Typical high is the median daily maximum. A rain day has 1 mm or more; a windy day a mean wind above 20 km/h; a clear day a daytime cloud cover of 2/8 or less on average (9:00–17:00). Days are averaged over 2023–2025 and scaled to the length of each month.
Year by year
- 2023 147 warm, dry days
- 2024 137 warm, dry days
- 2025 incomplete (8 of 12 months)
Questions
When is the best time to visit St. Louis for good weather?
The best time to visit St. Louis for warm, dry weather is September and October, with 19 to 23 such days a month. Beach days (a high of 26–35 °C, almost no rain, mostly sunny) are most common in September (up to 14 a month, 66 a year). Counted from measured days at St Louis Lambert International Airport station, 2023–2025.
Does it rain a lot in St. Louis?
On average 103 days a year had 1 mm of rain or more in 2023–2025. The wettest month was December (13 rain days), the driest October (5).
How many sunny days does St. Louis get a year?
About 115 days a year had mostly clear skies (daytime cloud cover of 2/8 or less on average, 9:00–17:00), most of them in October (17).
How warm does St. Louis get?
The median daily high ranged from 7 °C (44 °F) in January to 34 °C (93 °F) in July.
Nearby
- Kansas City380 km135 days
- Nashville410 km150 days
- Chicago420 km120 days
- Detroit730 km131 days
- Minneapolis750 km120 days
More cities in the United States
- San Diego 317 days
- Tijuana 311 days
- Los Angeles 296 days
- Honolulu 224 days
- Orlando 203 days
- Tampa 194 days
- Miami 181 days
- Charlotte 177 days
- Sacramento 169 days
- Atlanta 168 days
- Phoenix 166 days
- San Francisco 162 days
- San Antonio 157 days
- Denver 151 days
- New Orleans 144 days
- Seattle 142 days
- Houston 141 days
- Austin 134 days
- Albuquerque 132 days
- Dallas 129 days
- New York 129 days
- Las Vegas 126 days
- Boise 117 days
- Billings 116 days
- Boston 116 days
- Salt Lake City 107 days
- Fairbanks 81 days
- Anchorage 55 days
- Juneau 45 days
Where is the best climate in the United States?
Open St. Louis on the map Set your own temperature, rain and wind limits.
Source: St Louis Lambert International Airport weather station (72434013994), 20 km from the centre of St. Louis, 162 m above sea level. Daily records from NOAA's Global Surface Summary of the Day, 2023–2025; 88% of days have a complete record. A single station may not represent every part of a city, and three years is a short record.