Best Time to Visit Denver
United States · Humid Continental climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
Recommended Months
Based on temperature comfort, low precipitation, and sunshine hours, the best time to visit Denver is:
July → August → September
July scores 72/100 — the highest-rated month for travel.
Monthly Ratings (0-100)
Scores are weighted: temperature comfort (50%), low precipitation (30%), sunshine (20%). Higher is better.
| Month | Overall Score | Temp Comfort | Precipitation | Sunshine | Bar |
|---|---|---|---|---|---|
| January | 13 | 0 | 44 | 0 | |
| February | 0 | 0 | 2 | 0 | |
| March | 0 | 0 | 0 | 0 | |
| April | 12 | 24 | 0 | 0 | |
| May | 27 | 54 | 0 | 0 | |
| June | 44 | 89 | 0 | 0 | |
| July | 54 | 95 | 22 | 0 | |
| August | 54 | 98 | 17 | 0 | |
| September | 50 | 80 | 32 | 0 | |
| October | 35 | 41 | 47 | 0 | |
| November | 14 | 3 | 40 | 0 | |
| December | 15 | 0 | 51 | 0 |
Monthly Temperature Comfort
| Month | Mean Temp | Comfort Level |
|---|---|---|
| January | -2.8°C (27.0°F) | Cold (Below 0°C) |
| February | -3.6°C (25.5°F) | Cold (Below 0°C) |
| March | 2.2°C (36.0°F) | Cool (0-9°C) |
| April | 7.8°C (46.0°F) | Cool (0-9°C) |
| May | 13.8°C (56.8°F) | Mild (10-17°C) |
| June | 20.8°C (69.4°F) | Warm (18-24°C) |
| July | 24.0°C (75.2°F) | Warm (18-24°C) |
| August | 23.4°C (74.1°F) | Warm (18-24°C) |
| September | 19.1°C (66.4°F) | Warm (18-24°C) |
| October | 11.2°C (52.2°F) | Mild (10-17°C) |
| November | 3.6°C (38.5°F) | Cool (0-9°C) |
| December | 0.5°C (32.9°F) | Cool (0-9°C) |
Monthly Precipitation Rating
| Month | Rainfall (mm) | Rainy Days | Rating |
|---|---|---|---|
| January | 18.7 mm | 1.0 | Dry |
| February | 32.8 mm | 0.8 | Moderate |
| March | 51.8 mm | 5.8 | Moderate |
| April | 41.6 mm | 8.2 | Moderate |
| May | 82.4 mm | 13.6 | Wet |
| June | 44.9 mm | 10.8 | Moderate |
| July | 26.1 mm | 11.6 | Dry |
| August | 27.8 mm | 11.0 | Dry |
| September | 22.5 mm | 5.8 | Dry |
| October | 17.6 mm | 3.6 | Dry |
| November | 19.9 mm | 4.6 | Dry |
| December | 16.4 mm | 1.8 | Dry |
Monthly Sunshine Rating
| Month | Sunshine (hrs/day) | Rating |
|---|---|---|
| January | 7.7 hrs | Good |
| February | 8.8 hrs | Excellent |
| March | 9.5 hrs | Excellent |
| April | 10.7 hrs | Excellent |
| May | 11.5 hrs | Excellent |
| June | 12.4 hrs | Excellent |
| July | 12.9 hrs | Excellent |
| August | 12.0 hrs | Excellent |
| September | 11.0 hrs | Excellent |
| October | 9.8 hrs | Excellent |
| November | 8.4 hrs | Excellent |
| December | 7.8 hrs | Good |
Season-by-Season Breakdown
Spring (Mar-May)
Temperature: 7.9°C (46.2°F)
Rainfall: 58.6mm avg
Sunshine: 10.6 hrs/day
Humidity: 55.4%
Rainy Days: 9.2/mo
This is the cool season. Pack warm layers and plan indoor activities.
Summer (Jun-Aug)
Temperature: 22.7°C (72.9°F)
Rainfall: 32.9mm avg
Sunshine: 12.4 hrs/day
Humidity: 45.4%
Rainy Days: 11.1/mo
This is the warm season. Ideal for outdoor activities but be prepared for heat.
Autumn (Sep-Nov)
Temperature: 11.3°C (52.3°F)
Rainfall: 20.0mm avg
Sunshine: 9.7 hrs/day
Humidity: 46.9%
Rainy Days: 4.7/mo
Mild transitional weather — comfortable for most activities.
Winter (Dec-Feb)
Temperature: -2.0°C (28.4°F)
Rainfall: 22.6mm avg
Sunshine: 8.1 hrs/day
Humidity: 58.7%
Rainy Days: 1.2/mo
This is the cool season. Pack warm layers and plan indoor activities.
Frequently Asked Questions
What is the best time to visit Denver?
Based on our data-driven analysis, the best months to visit Denver are July, August, September, when temperatures are comfortable, rainfall is lower, and sunshine is plentiful. July scores 72/100, the highest-rated month.
What is the hottest month in Denver?
July is the hottest month with an average temperature of 24.0°C (75.2°F).
What is the coldest month in Denver?
February is the coldest month with an average temperature of -3.6°C (25.5°F).
When is the rainy season in Denver?
May is the wettest month with an average of 82.4mm of precipitation. Denver experiences about 79.0 rainy days per year. The driest month is December with 16.4mm.
What should I pack for a trip to Denver?
Packing recommendations depend on the season of your visit. Based on the climate data, pack lightweight, breathable clothing if visiting during the warm months (July is hottest at 24.0°C). For cooler months, bring layers and a warm jacket (February averages -3.6°C). A waterproof jacket or umbrella is recommended year-round as Denver receives 402.0mm of annual precipitation. Sun protection is important, especially during months with high UV index.
Denver's mile-high altitude creates a unique climate with low humidity and intense sunshine. I've studied the data and found that the city receives over 300 days of sunshine annually, making it one of the sunniest major US cities. The best time for outdoor activities is May to October, when temperatures are warm and the Rocky Mountains are accessible. The winters are cold but dry, with plenty of sunshine.
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 39.74°, -104.99°. Timezone: America/Denver. Last updated: 2026-07-30.