St. Louis Weather Forecast
St. Louis weather: 72°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Snow forecast for St. Louis
No snow is in the current forecast window for St. Louis.
0 of the next 16 nights are forecast to reach freezing.
Historically, average lows drop below freezing in January, February and December.
16-day forecast for St. Louis
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Sat, Aug 22 | ☀️ Clear sky | 88° / 70° | 4% | 12 mph | 7 |
| Sun, Aug 23 | ☁️ Overcast | 85° / 65° | 0% | 8 mph | 6 |
| Mon, Aug 24 | ☁️ Overcast | 89° / 66° | 7% | 11 mph | 6 |
| Tue, Aug 25 | ☁️ Overcast | 93° / 70° | 10% | 7 mph | 7 |
| Wed, Aug 26 | 🌦️ Drizzle | 91° / 73° | 15% · 0,1 in | 7 mph | 4 |
| Thu, Aug 27 | ☀️ Clear sky | 91° / 71° | 15% | 13 mph | 7 |
| Fri, Aug 28 | ☁️ Overcast | 88° / 66° | 7% | 7 mph | 7 |
| Sat, Aug 29 | ☁️ Overcast | 91° / 67° | 11% | 8 mph | 6 |
| Sun, Aug 30 | 🌦️ Drizzle | 93° / 69° | 11% · 0,1 in | 10 mph | 4 |
| Mon, Aug 31 | ⛈️ Thunderstorm | 101° / 67° | 19% · 2,0 in | 13 mph | 7 |
| Tue, Sep 1 | 🌦️ Drizzle | 91° / 69° | 21% · 0,1 in | 11 mph | 6 |
| Wed, Sep 2 | ☁️ Overcast | 94° / 73° | 30% | 8 mph | 7 |
| Thu, Sep 3 | ☁️ Overcast | 86° / 71° | 26% | 9 mph | 6 |
| Fri, Sep 4 | ☁️ Overcast | 85° / 68° | 19% | 8 mph | 6 |
| Sat, Sep 5 | ☁️ Overcast | 85° / 67° | 19% | 7 mph | 7 |
| Sun, Sep 6 | ☀️ Clear sky | -- / -- | 26% | -- | — |
Climate in St. Louis month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 36° | 22° | 2,9 in | ★★☆☆☆ |
| February | 49° | 30° | 1,4 in | ★★★☆☆ |
| March | 63° | 42° | 4,1 in | ★★★☆☆ |
| April | 69° | 51° | 7,1 in | ★★★☆☆ |
| May | 76° | 58° | 6,0 in | ★★★★☆ |
| June | 86° | 68° | 5,9 in | ★★★★☆ |
| July | 88° | 72° | 5,4 in | ★★★★☆ |
| August | 86° | 69° | 1,9 in | ★★★★☆ |
| September | 82° | 63° | 2,8 in | ★★★★☆ |
| October | 71° | 52° | 1,9 in | ★★★★☆ |
| November | 56° | 40° | 3,3 in | ★★★☆☆ |
| December | 47° | 32° | 2,4 in | ★★★☆☆ |
Climate type: Continental. Source: Open-Meteo archive (ERA5).
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 72°F (22°C) with clear. Humidity is 85% and wind is 4 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 12:41 AM.
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 22, 2026 at 12:41 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
