When to go · Sun Valley
Sun Valley in May
Avoid month. Listed as a month to avoid: Apr–May and Nov (mud season, lifts and trails closed).
Key facts
- Verdict
- Avoid
- Temperature
- 18°C (64°F)64°F (18°C) / 2°C (36°F)36°F (2°C)
- average high / low
- Rain days
- 8
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Listed as a month to avoid: Apr–May and Nov (mud season, lifts and trails closed).
Is another month better than May?
May is rated avoid. These months rate higher:
- JulyGreatInside Sun Valley's best window: Jan–Mar (ski), Jul–Sep (hike, bike, fish).
- AugustGreatInside Sun Valley's best window: Jan–Mar (ski), Jul–Sep (hike, bike, fish).
- SeptemberGreatInside Sun Valley's best window: Jan–Mar (ski), Jul–Sep (hike, bike, fish).
- JanuaryGreatInside Sun Valley's best window: Jan–Mar (ski), Jul–Sep (hike, bike, fish).
Weather in May
- Sun ValleyHighs around 18 °C (64 °F), lows around 2 °C (36 °F), rain on about 8 daysHighs around 64 °F (18 °C), lows around 36 °F (2 °C), rain on about 8 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Memorial Day big impact
Last Monday of May · United States
Start of summer; roads and beaches full.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
Compare two months
Weather, crowds and prices for any two months in Sun Valley, side by side.
Verdict
May: Avoid
Jan: Great (better)
Daytime high
May: 18 °C (64 °F)64 °F (18 °C)
Jan: 0 °C (32 °F)32 °F (0 °C)
Night low
May: 2 °C (36 °F)36 °F (2 °C)
Jan: -12 °C (10 °F)10 °F (-12 °C)
Rain days
May: 8 (better)
Jan: 9
Crowds
May: Medium
Jan: Low
Prices
May: Medium
Jan: Low
Festivals listed
May: 1
Jan: 0
May: Listed as a month to avoid: Apr–May and Nov (mud season, lifts and trails closed).
January: Inside Sun Valley's best window: Jan–Mar (ski), Jul–Sep (hike, bike, fish).
Sun Valley: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm coat, hat and gloves for mornings and evenings