St. Louis Klimat and Average Väder
Klimat of St. Louis: average temperatures, rainfall and seasons month by month.
Klimat in St. Louis month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Månad | Avg high | Avg low | Regnfall | Rating |
|---|---|---|---|---|
| januari | 2° | -6° | 74 mm | ★★☆☆☆ |
| februari | 9° | -1° | 35 mm | ★★★☆☆ |
| mars | 17° | 5° | 104 mm | ★★★☆☆ |
| april | 21° | 11° | 180 mm | ★★★☆☆ |
| maj | 24° | 14° | 152 mm | ★★★★☆ |
| juni | 30° | 20° | 149 mm | ★★★★☆ |
| juli | 31° | 22° | 137 mm | ★★★★☆ |
| augusti | 30° | 21° | 66 mm | ★★★★☆ |
| september | 29° | 19° | 63 mm | ★★★★☆ |
| oktober | 21° | 11° | 49 mm | ★★★★☆ |
| november | 14° | 5° | 85 mm | ★★★☆☆ |
| december | 8° | -0° | 62 mm | ★★★☆☆ |
Klimat type: Kontinental. Källa: Open-Meteo archive (ERA5).
Recent extremes in St. Louis
Högest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How St. Louis compares med 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 |
Bästa tiden att besöka St. Louis
Go in augusti, september and oktober. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: januari, februari and december - expect the least comfortable mix of heat, cold or rain.
What this means for St. Louis
Today is warmer than average for september. The forecast high of 34°C is 5°C above the 29°C typical for this month.
Regn 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 juni och augusti.
The gap between the warmest and coldest month averages 28°C.
What och pack, what och skip
- Lightweight, light-coloured clothing and a refillable water bottle
- sönglasses, a brimmed hat and SPF 30+
- A packable rain shell - 2 of the next 7 days carry a real chance of rain
- Avoid long hikes after mid-morning; start at dawn or leave it for a cooler day.
- If your dates are flexible, avoid januari, februari and december - historically the least comfortable months here.
Sammanfattning
St. Louis is a city in Missouri. St. Louis is known for Gateway Arch and blues. Befolkningen är cirka 290.000.
Just nu är det 18°C (65°F) in St. Louis med mulet. Det känns som 17°C. I dag varierar temperaturen mellan 18°C och 34°C. Risken för nederbörd är 4%. Sightseeing conditions score 9.6/10 - utmärkt — åk nu.
Bästa tiden att besöka St. Louis is augusti, september and oktober. Klimatet är continental. januari, februari and december tend och be the least comfortable months. juli is the warmest month med average highs near 31°C, while januari is the coldest med lows near -6°C.
The closest major airport is Nashville International Airport (BNA), about 417 km away. Nearby highlights include Gateway Arch National Park, Starved Rock State Park and Mammoth Cave National Park.
Enkelt förklarat. Today is warmer than average for september. The forecast high of 34°C is 5°C above the 29°C typical for this month. The best window och be outside is roughly 8 AM och 11 AM, when temperature, rain chance and wind line up best. sightseeing is the strongest bet in St. Louis today at 9.6/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about St. Louis
| Typ | City |
|---|---|
| State | Missouri |
| Land | USA |
| Kontinent | Nordamerika |
| Koordinater | 38°37′37.2″N 90°11′57.8″W (38.627, -90.1994) |
| Befolkning | 290.000 |
| Known for | Gateway Arch and blues |
| Lokal tid | 8:56 PM (UTC-05:00) |
| Best months | augusti, september and oktober |
| Klimat | Kontinental |
Väder map for St. Louis
Animated model layers. Pick a layer och load it.
Animated layers by Vindy. For pin-level detail and nearby places, see the interactive map below.
Explore St. Louis
Every topic we hold for this place, and the same topic for the places around it.
Klimat 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 Nordamerika.
What is the weather like in St. Louis just nu?
It is currently 18°C (65°F) med mulet. Luftfuktighet is 65% and wind is 10 km/h.
When is the best time och visit St. Louis?
augusti, september and oktober offer the most comfortable conditions in St. Louis, which has a continental climate. januari, februari 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 8:56 PM.
How many people live in St. Louis?
St. Louis has a population of approximately 290.000.
What is the nearest airport och 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 och 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. |
|---|---|
| Prognos and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klimat averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Väder 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 september 30, 2026 at 8:56 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
