St. Louis 天氣 預報
St. Louis weather: 16°C, 晴朗. 逐小時 forecast, 14-day outlook, UV, air quality and the best time至visit.
St. Louis weather in 九月
One of the best months至visit St. Louis.
九月 runs 9°C warmer than the annual average in St. Louis.
天氣 map for St. Louis
Animated model layers. Pick a layer至load it.
Animated layers by 風y. For pin-level detail and nearby places, see the interactive map below.
氣候 in St. Louis month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| 月份 | Avg high | Avg low | 雨fall | Rating |
|---|---|---|---|---|
| 一月 | 2° | -6° | 74 mm | ★★☆☆☆ |
| 二月 | 9° | -1° | 35 mm | ★★★☆☆ |
| 三月 | 17° | 5° | 104 mm | ★★★☆☆ |
| 四月 | 21° | 11° | 180 mm | ★★★☆☆ |
| 五月 | 24° | 14° | 152 mm | ★★★★☆ |
| 六月 | 30° | 20° | 149 mm | ★★★★☆ |
| 七月 | 31° | 22° | 137 mm | ★★★★☆ |
| 八月 | 30° | 21° | 66 mm | ★★★★☆ |
| 九月 | 29° | 19° | 63 mm | ★★★★☆ |
| 十月 | 21° | 11° | 49 mm | ★★★★☆ |
| 十一月 | 14° | 5° | 85 mm | ★★★☆☆ |
| 十二月 | 8° | -0° | 62 mm | ★★★☆☆ |
氣候 type: 洲al. 來源： Open-Meteo archive (ERA5).
最佳旅遊時間 St. Louis
Go in 八月, 九月 and 十月. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: 一月, 二月 and 十二月 - expect the least comfortable mix of heat, cold or rain.
What至pack, what至skip
- 週日glasses, a brimmed hat and SPF 30+
- Layers - the daily swing is 20°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid 一月, 二月 and 十二月 - historically the least comfortable months here.
How St. Louis compares，天氣為nearby places
Annual averages, and the difference against St. Louis.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Gateway Arch National Park | 1 km | 15°C | about the same | 1156 mm |
| Illinois | 137 km | 13°C | 1°C cooler | 939 mm |
| Starved Rock State Park | 317 km | 12°C | 3°C cooler | 1052 mm |
| Branson | 345 km | 16°C | +1°C warmer | 1119 mm |
| Indianapolis | 371 km | 13°C | 2°C cooler | 1135 mm |
查看 St. Louis 的分時預報
St. Louis weather - more answers
Explore St. Louis
Every topic we hold for this place, and the same topic for the places around it.
天氣 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 北美洲.
What is the weather like in St. Louis現在?
It is currently 16°C (61°F)，天氣為晴朗. 濕度 is 48% and wind is 7 km/h.
When is the best time至visit St. Louis?
八月, 九月 and 十月 offer the most comfortable conditions in St. Louis, which has a continental climate. 一月, 二月 and 十二月 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 6:31 PM.
How many people live in St. Louis?
St. Louis has a population of approximately 290.000.
What is the nearest airport至St. Louis?
The closest airports are Nashville International Airport (BNA), 417 km away and O'Hare International Airport (ORD), 420 km away.
What are the top things至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. |
|---|---|
| 預報 and observations | Open-Meteo (ECMWF and national models). |
| 空氣品質 and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| 氣候 averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National 天氣 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 十月 25, 2026 at 6:31 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
