St. Louis Klima and Average Vejr
Klima of St. Louis: average temperatures, rainfall and seasons month by month.
Klima in St. Louis month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Måned | Avg high | Avg low | Regnfall | Rating |
|---|---|---|---|---|
| januar | 2° | -6° | 74 mm | ★★☆☆☆ |
| februar | 9° | -1° | 35 mm | ★★★☆☆ |
| marts | 17° | 5° | 104 mm | ★★★☆☆ |
| april | 21° | 11° | 180 mm | ★★★☆☆ |
| maj | 24° | 14° | 152 mm | ★★★★☆ |
| juni | 30° | 20° | 149 mm | ★★★★☆ |
| juli | 31° | 22° | 137 mm | ★★★★☆ |
| august | 30° | 21° | 56 mm | ★★★★☆ |
| september | 28° | 17° | 70 mm | ★★★★☆ |
| oktober | 21° | 11° | 49 mm | ★★★★☆ |
| november | 14° | 5° | 85 mm | ★★★☆☆ |
| december | 8° | -0° | 62 mm | ★★★☆☆ |
Klima type: Kontinental. Kilde: Open-Meteo archive (ERA5).
Recent extremes in St. Louis
Højest 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 | 1153 mm |
| Illinois | 137 km | 13°C | 1°C cooler | 931 mm |
| Starved Rock State Park | 317 km | 12°C | 3°C cooler | 1018 mm |
| Branson | 345 km | 16°C | +1°C warmer | 1115 mm |
| Indianapolis | 371 km | 13°C | 2°C cooler | 1119 mm |
Bedste rejsetid St. Louis
Go in august, september and oktober. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: januar, februar and december - expect the least comfortable mix of heat, cold or rain.
What this means for St. Louis
Today is much warmer than average for september. The forecast high of 37°C is 9.7°C above the 28°C typical for this month.
A 11% chance means most of the area stays dry; a passing shower is possible but short.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in juni og august.
The gap between the warmest and coldest month averages 28°C.
What og pack, what og skip
- Lightweight, light-coloured clothing and a refillable water bottle
- sønglasses, a brimmed hat and SPF 30+
- Avoid long hikes after mid-morning; start at dawn or leave it for a cooler day.
- If your dates are flexible, avoid januar, februar and december - historically the least comfortable months here.
Resumé
St. Louis is a city in Missouri. St. Louis is known for Gateway Arch and blues. Der bor omkring 290.000.
Lige nu er det 22°C (71°F) in St. Louis med klart. Det føles som 23°C. I dag ligger temperaturen mellem 22°C og 37°C. Sandsynligheden for nedbør er 11%. Sightseeing conditions score 9.3/10 - fremragende — tag af sted nu.
Det bedste tidspunkt at besøge St. Louis is august, september and oktober. Klimaet er continental. januar, februar and december tend og be the least comfortable months. juli is the warmest month med average highs near 31°C, while januar 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.
Kort sagt. Today is much warmer than average for september. The forecast high of 37°C is 9.7°C above the 28°C typical for this month. The best window og be outside is roughly 7 AM og 10 AM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in St. Louis today at 9.7/10. 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
| Type | 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 | 5:38 AM (UTC-05:00) |
| Best months | august, september and oktober |
| Klima | Kontinental |
Vejr map for St. Louis
Animated model layers. Pick a layer og 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.
Klima 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 lige nu?
It is currently 22°C (71°F) med klart. Luftfugtighed is 80% and wind is 11 km/h.
When is the best time og visit St. Louis?
august, september and oktober offer the most comfortable conditions in St. Louis, which has a continental climate. januar, februar 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 5:38 AM.
How many people live in St. Louis?
St. Louis has a population of approximately 290.000.
What is the nearest airport og 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 og 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. |
|---|---|
| Prognose and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klima averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Vejr 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 15, 2026 at 5:38 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
