When to go · Keystone, Colorado
Keystone, Colorado in September
Avoid month. Listed as a month to avoid: Apr–May (thin snow), Sep–Oct (wet).
Key facts
- Verdict
- Avoid
- Temperature
- 19°C (66°F)66°F (19°C) / 6°C (43°F)43°F (6°C)
- average high / low
- Rain days
- 7
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Listed as a month to avoid: Apr–May (thin snow), Sep–Oct (wet).
Is another month better than September?
September is rated avoid. These months rate higher:
- DecemberGreatInside Keystone, Colorado's best window: Dec–Mar (ski), Jun–Aug (bike/hike).
- JanuaryGreatInside Keystone, Colorado's best window: Dec–Mar (ski), Jun–Aug (bike/hike).
- FebruaryGreatInside Keystone, Colorado's best window: Dec–Mar (ski), Jun–Aug (bike/hike).
- MarchGreatInside Keystone, Colorado's best window: Dec–Mar (ski), Jun–Aug (bike/hike).
Weather in September
- Keystone, ColoradoHighs around 19 °C (66 °F), lows around 6 °C (43 °F), rain on about 7 daysHighs around 66 °F (19 °C), lows around 43 °F (6 °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.
Labor Day big impact
1st Monday of September · United States
End of summer; last big road-trip weekend.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: After Labor Day the crowds drop and parks stay open; Florida and the Gulf are at hurricane peak.
Compare two months
Weather, crowds and prices for any two months in Keystone, Colorado, side by side.
Verdict
Sep: Avoid
Jan: Great (better)
Daytime high
Sep: 19 °C (66 °F)66 °F (19 °C)
Jan: -5 °C (23 °F)23 °F (-5 °C)
Night low
Sep: 6 °C (43 °F)43 °F (6 °C)
Jan: -15 °C (5 °F)5 °F (-15 °C)
Rain days
Sep: 7
Jan: 5 (better)
Crowds
Sep: Medium
Jan: Low
Prices
Sep: Medium
Jan: Low
Festivals listed
Sep: 1
Jan: 0
September: Listed as a month to avoid: Apr–May (thin snow), Sep–Oct (wet).
January: Inside Keystone, Colorado's best window: Dec–Mar (ski), Jun–Aug (bike/hike).
Keystone, Colorado: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings