Sun Valley weather in April
April in Sun Valley: cold, a little rain, with reliable snow — one of the best months to visit.
#2 of 12 months in Sun Valley · #45 of 604 destinations to visit in April · comfort 92/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Sun Valley climate normals — April
| Daytime high | 7°C / 45°F | 🧥 cold |
|---|---|---|
| Nighttime low | -4°C / 25°F | |
| Feels like (high) | 4°C / 39°F | |
| Rainfall | 41 mm / 1.6 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 71% | 💧 humid |
| Dew point | -5°C / 23°F | |
| Sunshine | 11.3 h/day | |
| Daylight | 13.5 h | |
| Wind | 13 km/h / 8 mph | |
| Snowfall | 25 cm / 9.8 in | |
| Air quality (US AQI) | 53 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Sun Valley?
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Sun Valley in April — FAQ
- Is April a good time to visit Sun Valley?
- April in Sun Valley: cold, a little rain, with reliable snow — one of the best months to visit. It ranks #2 of 12 months for Sun Valley on SeasonMap's comfort score (92/100).
- What is the weather like in Sun Valley in April?
- In April, Sun Valley averages a daily high of 7°C and a low of -3.7°C, with about 41.2 mm of rain over roughly 9.8 rainy days.
- What is the air quality in Sun Valley in April?
- Sun Valley has a mean US Air Quality Index of about 53 in April.
- Does it snow in Sun Valley in April?
- Sun Valley sees roughly 25 cm of snowfall in April.