St. Louis Weather Forecast
St. Louis weather: 75°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
14-day forecast for St. Louis
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Fri, Aug 21 | ⛅ Partly cloudy | 88° / 66° | 0% | 4 mph | 7 |
| Sat, Aug 22 | ☀️ Clear sky | 88° / 71° | 4% | 12 mph | 7 |
| Sun, Aug 23 | ☁️ Overcast | 85° / 65° | 0% | 9 mph | 6 |
| Mon, Aug 24 | ☁️ Overcast | 89° / 68° | 7% | 11 mph | 7 |
| Tue, Aug 25 | 🌦️ Light drizzle | 89° / 69° | 10% · 0,0 in | 10 mph | 6 |
| Wed, Aug 26 | ☁️ Overcast | 96° / 69° | 15% | 7 mph | 7 |
| Thu, Aug 27 | ☁️ Overcast | 95° / 74° | 15% | 10 mph | 6 |
| Fri, Aug 28 | ☁️ Overcast | 93° / 71° | 7% | 11 mph | 7 |
| Sat, Aug 29 | 🌦️ Light drizzle | 103° / 73° | 11% · 0,0 in | 11 mph | 7 |
| Sun, Aug 30 | ☁️ Overcast | 107° / 76° | 11% | 16 mph | 7 |
| Mon, Aug 31 | 🌦️ Drizzle | 107° / 79° | 19% · 0,1 in | 16 mph | 7 |
| Tue, Sep 1 | 🌦️ Drizzle | 106° / 76° | 21% · 0,1 in | 17 mph | 6 |
| Wed, Sep 2 | 🌤️ Mainly clear | 109° / 86° | 30% | 11 mph | 7 |
| Thu, Sep 3 | ☁️ Overcast | 110° / 87° | 26% | 12 mph | 7 |
The two-week trend
Warming. The second half of the window averages 46°F warmer than the days immediately ahead.
The window averages 97°F against a August normal of 86°F - 43°F above.
The next 7 days look unusually dry - roughly 1% of a normal August week (0,0 in against 0,4 in).
What this means for St. Louis
Today is about average for August. The forecast high of 88°F is in line with the 86°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 83°F.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
See the St. Louis forecast by time range
St. Louis weather - more answers
Explore St. Louis
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is St. Louis?
St. Louis is a city in Missouri. Its coordinates are 38.627, -90.1994. It lies in North America.
What is the weather like in St. Louis right now?
It is currently 75°F (24°C) with clear. Humidity is 79% and wind is 2 mph.
When is the best time to visit St. Louis?
August, September and October offer the most comfortable conditions in St. Louis, which has a continental climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is St. Louis in?
St. Louis observes America/Chicago (UTC-05:00). The local time is 11:14 PM.
How many people live in St. Louis?
St. Louis has a population of approximately 290.000.
What is the nearest airport to St. Louis?
The closest airports are Nashville International Airport (BNA), 259 mi away and O'Hare International Airport (ORD), 261 mi away.
What are the top things to do in St. Louis?
Popular options include Gateway Arch National Park, Starved Rock State Park and Mammoth Cave National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-us) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 21, 2026 at 11:14 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
