Climate almanac
Washington
Indiana, United States · 38.66°, -87.17°
What is the climate like in Washington?
The best time to visit Washington is typically August – October, with trip comfort peaking in September (7.5/10). Washington is warmest in July, when daily highs average 87°F (31°C), and coolest in January, when lows fall to about 27°F (-3°C). The wettest month is typically March and the driest is September; the year sees roughly 50 in (1264 mm) of precipitation.
- Best time to visitAugust – October — comfort peaks in September (7.5/10)
- Warmest monthJuly — average high 87°F (31°C)
- Coolest monthJanuary — average low 27°F (-3°C)
- Wettest monthMarch (5.6 in (142 mm))
- Driest monthSeptember (2.7 in (68 mm))
- Annual precipitation50 in (1264 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromWashington 1 W, 2 km away (1896-2026)