Climate almanac
Machesney Park
Illinois, United States · 42.35°, -89.04°
What is the climate like in Machesney Park?
The best time to visit Machesney Park is typically June – September, with trip comfort peaking in August (6.9/10). Machesney Park is warmest in July, when daily highs average 84°F (29°C), and coolest in January, when lows fall to about 18°F (-8°C). The wettest month is typically May and the driest is February; the year sees roughly 39 in (982 mm) of precipitation.
- Best time to visitJune – September — comfort peaks in August (6.9/10)
- Warmest monthJuly — average high 84°F (29°C)
- Coolest monthJanuary — average low 18°F (-8°C)
- Wettest monthMay (4.9 in (124 mm))
- Driest monthFebruary (1.8 in (46 mm))
- Annual precipitation39 in (982 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromBeloit, 17 km away (1893-2026)