When to go · Sisters
Sisters in May
Good month. Outside the best window (Jun–Sep for trails and events; Dec–Mar for Hoodoo skiing). Across United States: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
Key facts
- Verdict
- Good
- Temperature
- 19°C (66°F)66°F (19°C) / 3°C (37°F)37°F (3°C)
- average high / low
- Rain days
- 7
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Outside the best window (Jun–Sep for trails and events; Dec–Mar for Hoodoo skiing). Across United States: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
Is another month better than May?
May is rated good. These months rate higher:
- JuneGreatInside Sisters's best window: Jun–Sep for trails and events; Dec–Mar for Hoodoo skiing.
- JulyGreatInside Sisters's best window: Jun–Sep for trails and events; Dec–Mar for Hoodoo skiing.
- AugustGreatInside Sisters's best window: Jun–Sep for trails and events; Dec–Mar for Hoodoo skiing.
- SeptemberGreatInside Sisters's best window: Jun–Sep for trails and events; Dec–Mar for Hoodoo skiing.
Weather in May
- SistersHighs around 19 °C (66 °F), lows around 3 °C (37 °F), rain on about 7 daysHighs around 66 °F (19 °C), lows around 37 °F (3 °C), rain on about 7 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 Sisters, side by side.
Verdict
May: Good
Jan: Great (better)
Daytime high
May: 19 °C (66 °F)66 °F (19 °C)
Jan: 6 °C (43 °F)43 °F (6 °C)
Night low
May: 3 °C (37 °F)37 °F (3 °C)
Jan: -4 °C (25 °F)25 °F (-4 °C)
Rain days
May: 7 (better)
Jan: 10
Crowds
May: Medium
Jan: Low
Prices
May: Medium
Jan: Low
Festivals listed
May: 1
Jan: 0
May: Outside the best window (Jun–Sep for trails and events; Dec–Mar for Hoodoo skiing). Across United States: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
January: Inside Sisters's best window: Jun–Sep for trails and events; Dec–Mar for Hoodoo skiing.
Sisters: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm coat, hat and gloves for mornings and evenings