Climate almanac
East Saint Louis
Illinois, United States · 38.62°, -90.15°
What is the climate like in East Saint Louis?
The best time to visit East Saint Louis is typically August – October, with trip comfort peaking in September (7.1/10). East Saint Louis is warmest in July, when daily highs average 89°F (32°C), and coolest in January, when lows fall to about 27°F (-3°C). The wettest month is typically April and the driest is December; the year sees roughly 46 in (1164 mm) of precipitation.
- Best time to visitAugust – October — comfort peaks in September (7.1/10)
- Warmest monthJuly — average high 89°F (32°C)
- Coolest monthJanuary — average low 27°F (-3°C)
- Wettest monthApril (5.4 in (136 mm))
- Driest monthDecember (2.6 in (66 mm))
- Annual precipitation46 in (1164 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromCahokia St Louis Dwtn AP, 7 km away (1997-2026)