Live Weather & Forecast
Weather in Saint-Louis
Grand Est, France · Real-time conditions & 3-day outlook
23°C
Feels like 25°C
74°F / Feels 77°F
Partly Cloudy
Saint-Louis, Grand Est
🌞 Daytime
Updated: 2026-04-18 14:30
Humidity
38%
Wind
7.6 km/h NNW
Wind Gust
8.7 km/h
Pressure
1019 mb
Visibility
10 km
UV Index
5.7
(Moderate)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
10.3°C
Wind Degree
332°
Air Quality Index
US EPA: Moderate
UK DEFRA: Low (3)
CO
210.9 μg/m³
NO₂
6.6 μg/m³
O₃
94 μg/m³
SO₂
2.1 μg/m³
PM 2.5
26.6 μg/m³
PM 10
32.1 μg/m³
Today's Hourly Forecast
24-hour breakdown for Saint-Louis, Grand Est
12 AM
10°
Patchy rain nearby
1 AM
10°
Clear
2 AM
9°
Clear
3 AM
9°
Clear
4 AM
8°
Clear
5 AM
8°
Clear
6 AM
8°
Clear
7 AM
8°
Sunny
8 AM
10°
Sunny
9 AM
14°
Sunny
10 AM
16°
Sunny
11 AM
18°
Sunny
12 PM
19°
Sunny
1 PM
20°
Sunny
2 PM
23°
Partly Cloudy
3 PM
20°
Overcast
4 PM
20°
Overcast
5 PM
20°
Overcast
6 PM
19°
Cloudy
7 PM
17°
Patchy rain nearby
8 PM
14°
Patchy rain nearby
9 PM
13°
Overcast
10 PM
11°
Cloudy
11 PM
11°
Cloudy
3-Day Forecast
Daily overview for Saint-Louis, Grand Est
Today
Patchy rain nearby
20°
/
8°
🌧️ 65% chance of rain
💧 Avg. humidity: 74%
💨 Max wind: 9 km/h
🌧️ Total precip: 0.11 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:35 AM
🌇 Sunset: 08:23 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Sun, Apr 19
Patchy rain nearby
16°
/
7°
🌧️ 88% chance of rain
💧 Avg. humidity: 81%
💨 Max wind: 14.4 km/h
🌧️ Total precip: 0.75 mm
☀️ UV Index: 0.6
🌅 Sunrise: 06:33 AM
🌇 Sunset: 08:24 PM
🌙 Waxing Crescent
🌑 Moon: 3% lit
Mon, Apr 20
Partly Cloudy
16°
/
3°
🌧️ 0% chance of rain
💧 Avg. humidity: 72%
💨 Max wind: 11.2 km/h
🌧️ Total precip: 0.01 mm
☀️ UV Index: 1.3
🌅 Sunrise: 06:32 AM
🌇 Sunset: 08:26 PM
🌙 Waxing Crescent
🌑 Moon: 9% lit
Best Time to Visit Saint-Louis
Plan your trip to Saint-Louis, France around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Saint-Louis?
Current conditions in Saint-Louis: Partly Cloudy, temperature 23°C, humidity 38%.
What is the best time to visit Saint-Louis?
The best time to visit Saint-Louis is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Saint-Louis?
Saint-Louis is located at approximately 47.6° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Saint-Louis?
The wettest period in Saint-Louis is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Saint-Louis?
For visits to Saint-Louis during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Saint-Louis in 2026?
View the 2026 public holidays for Saint-Louis on our Holidays page.
What are the GPS coordinates used for the weather forecast in Saint-Louis?
The weather forecast for Saint-Louis uses coordinates 47.586, 7.5616.