Sun Valley weather in July
July in Sun Valley: warm, dry, with clean air — one of the weakest months to visit.
#12 of 12 months in Sun Valley · #604 of 604 destinations to visit in July · comfort 15/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Sun Valley climate normals — July
| Daytime high | 27°C / 81°F | 🌤 warm |
|---|---|---|
| Nighttime low | 12°C / 54°F | |
| Feels like (high) | 26°C / 79°F | |
| Rainfall | 15 mm / 0.6 in | ☀️ dry |
| Rainy days | 4 days | |
| Humidity | 41% | 🍃 comfortable |
| Dew point | 5°C / 41°F | |
| Sunshine | 13.6 h/day | |
| Daylight | 15.1 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Sun Valley in July — FAQ
- Is July a good time to visit Sun Valley?
- July in Sun Valley: warm, dry, with clean air — one of the weakest months to visit. It ranks #12 of 12 months for Sun Valley on SeasonMap's comfort score (15/100).
- What is the weather like in Sun Valley in July?
- In July, Sun Valley averages a daily high of 27.3°C and a low of 12.3°C, with about 15.2 mm of rain over roughly 4.2 rainy days.
- What is the air quality in Sun Valley in July?
- Sun Valley has a mean US Air Quality Index of about 48 in July.