Climate almanac
Arnold
Missouri, US · 38.43°, -90.38°
What is the climate like in Arnold?
The best time to visit Arnold is typically September – October, with trip comfort peaking in September (7.2/10). Arnold is warmest in July, when daily highs average 89°F (32°C), and coolest in January, when lows fall to about 26°F (-3°C). The wettest month is typically May and the driest is December; the year sees roughly 45 in of precipitation.
- Best time to visitSeptember – October — comfort peaks in September (7.2/10)
- Warmest monthJuly — average high 89°F (32°C)
- Coolest monthJanuary — average low 26°F (-3°C)
- Wettest monthMay (5.2 in)
- Driest monthDecember (2.4 in)
- Annual precipitation45 in