Climate almanac
Rupert
Idaho, United States · 42.62°, -113.68°
What is the climate like in Rupert?
The best time to visit Rupert is typically May – September, with trip comfort peaking in July (8.9/10). Rupert is warmest in July, when daily highs average 94°F (34°C), and coolest in January, when lows fall to about 23°F (-5°C). The wettest month is typically December and the driest is July; the year sees roughly 15 in (382 mm) of precipitation.
- Best time to visitMay – September — comfort peaks in July (8.9/10)
- Warmest monthJuly — average high 94°F (34°C)
- Coolest monthJanuary — average low 23°F (-5°C)
- Wettest monthDecember (1.9 in (48 mm))
- Driest monthJuly (0.3 in (7 mm))
- Annual precipitation15 in (382 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromRupert 3 Wsw, 4 km away (1906-2022)