Climate almanac
Princeton
Illinois, US · 41.37°, -89.46°
What is the climate like in Princeton?
The best time to visit Princeton is typically August – September, with trip comfort peaking in September (7.3/10). Princeton is warmest in July, when daily highs average 85°F (29°C), and coolest in January, when lows fall to about 20°F (-7°C). The wettest month is typically May and the driest is November; the year sees roughly 41 in of precipitation.
- Best time to visitAugust – September — comfort peaks in September (7.3/10)
- Warmest monthJuly — average high 85°F (29°C)
- Coolest monthJanuary — average low 20°F (-7°C)
- Wettest monthMay (4.9 in)
- Driest monthNovember (2.0 in)
- Annual precipitation41 in