Denver Climate & Weather Averages
United States · Humid Continental climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
Best Time to Visit Denver
Based on temperature comfort, low rainfall, and sunshine hours, the best months to visit Denver are:
July, August, September
Scores based on ideal temperature (18-28°C), low precipitation, and high sunshine. July scores 72/100.
Denver has a Humid Continental climate with warm summers and very cold winters. The warmest month is July with an average temperature of 24.0°C (75.2°F), while February is the coldest at -3.6°C (25.5°F). Annual precipitation averages 402.0mm spread across approximately 79.0 rainy days per year, with May being the wettest month at 82.4mm and December the driest at 16.4mm. The city receives an average of 7.7-12.9 hours of sunshine per day, with the sunniest months being July and June. Humidity remains relatively consistent throughout the year, averaging around 51.6% annually, while average wind speeds reach 18.3 km/h. The overall annual mean temperature is 10.0°C (50.0°F), reflecting the humid continental conditions shaped by Denver's latitude (39.74°) and surrounding geography. For travelers, the best time to visit is July, August, September, when temperatures are comfortable and rainfall is lower.
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.
Seasonal Climate Overview
Spring (Mar-May)
Average temperature 7.9°C (46.2°F), rainfall 58.6mm, sunshine 10.6 hrs/day, humidity 55.4%. Cold season conditions dominate. Expect around 9.2 rainy days per month.
Summer (Jun-Aug)
Average temperature 22.7°C (72.9°F), rainfall 32.9mm, sunshine 12.4 hrs/day, humidity 45.4%. Warm season conditions prevail. Expect around 11.1 rainy days per month.
Autumn (Sep-Nov)
Average temperature 11.3°C (52.3°F), rainfall 20.0mm, sunshine 9.7 hrs/day, humidity 46.9%. Mild transitional weather characterizes this period. Expect around 4.7 rainy days per month.
Winter (Dec-Feb)
Average temperature -2.0°C (28.4°F), rainfall 22.6mm, sunshine 8.1 hrs/day, humidity 58.7%. Cold season conditions dominate. Expect around 1.2 rainy days per month.
Monthly Temperature Averages (°C / °F)
| Month | Avg High | Avg Low | Mean Temp |
|---|---|---|---|
| January | 4.7°C (40.5°F) | -9.0°C (15.8°F) | -2.8°C (27.0°F) |
| February | 4.7°C (40.5°F) | -10.9°C (12.4°F) | -3.6°C (25.5°F) |
| March | 10.4°C (50.7°F) | -5.0°C (23.0°F) | 2.2°C (36.0°F) |
| April | 16.1°C (61.0°F) | -0.2°C (31.6°F) | 7.8°C (46.0°F) |
| May | 21.5°C (70.7°F) | 6.3°C (43.3°F) | 13.8°C (56.8°F) |
| June | 28.9°C (84.0°F) | 12.7°C (54.9°F) | 20.8°C (69.4°F) |
| July | 32.1°C (89.8°F) | 16.0°C (60.8°F) | 24.0°C (75.2°F) |
| August | 31.6°C (88.9°F) | 15.6°C (60.1°F) | 23.4°C (74.1°F) |
| September | 28.2°C (82.8°F) | 10.6°C (51.1°F) | 19.1°C (66.4°F) |
| October | 20.2°C (68.4°F) | 3.6°C (38.5°F) | 11.2°C (52.2°F) |
| November | 11.9°C (53.4°F) | -2.7°C (27.1°F) | 3.6°C (38.5°F) |
| December | 8.2°C (46.8°F) | -5.2°C (22.6°F) | 0.5°C (32.9°F) |
Monthly Precipitation (mm)
| Month | Avg Rainfall | Bar |
|---|---|---|
| January | 18.7 mm | |
| February | 32.8 mm | |
| March | 51.8 mm | |
| April | 41.6 mm | |
| May | 82.4 mm | |
| June | 44.9 mm | |
| July | 26.1 mm | |
| August | 27.8 mm | |
| September | 22.5 mm | |
| October | 17.6 mm | |
| November | 19.9 mm | |
| December | 16.4 mm |
Monthly Rainy Days (avg days with rain > 0.1mm)
| Month | Avg Rainy Days | Bar |
|---|---|---|
| January | 1.0 | |
| February | 0.8 | |
| March | 5.8 | |
| April | 8.2 | |
| May | 13.6 | |
| June | 10.8 | |
| July | 11.6 | |
| August | 11.0 | |
| September | 5.8 | |
| October | 3.6 | |
| November | 4.6 | |
| December | 1.8 |
Monthly Humidity (%)
| Month | Avg Humidity | Bar |
|---|---|---|
| January | 60.7% | |
| February | 62.5% | |
| March | 60.7% | |
| April | 50.0% | |
| May | 55.5% | |
| June | 47.3% | |
| July | 44.3% | |
| August | 44.7% | |
| September | 42.1% | |
| October | 45.7% | |
| November | 52.9% | |
| December | 53.0% |
Monthly Wind Speed (avg max km/h)
| Month | Avg Max Wind | Bar |
|---|---|---|
| January | 15.9 km/h | |
| February | 17.5 km/h | |
| March | 18.0 km/h | |
| April | 20.3 km/h | |
| May | 20.7 km/h | |
| June | 20.7 km/h | |
| July | 20.5 km/h | |
| August | 19.5 km/h | |
| September | 17.7 km/h | |
| October | 17.4 km/h | |
| November | 15.8 km/h | |
| December | 16.0 km/h |
Monthly UV Index (avg max)
| Month | UV Index | Risk Level | Bar |
|---|---|---|---|
| January | — | — | |
| February | — | — | |
| March | — | — | |
| April | — | — | |
| May | — | — | |
| June | — | — | |
| July | — | — | |
| August | — | — | |
| September | — | — | |
| October | — | — | |
| November | — | — | |
| December | — | — |
Monthly Snowfall (cm)
| Month | Avg Snowfall | Bar |
|---|---|---|
| January | 12.9 cm | |
| February | 21.1 cm | |
| March | 26.9 cm | |
| April | 11.3 cm | |
| May | 3.2 cm | |
| June | 0.0 cm | |
| July | 0.0 cm | |
| August | 0.0 cm | |
| September | 2.3 cm | |
| October | 4.5 cm | |
| November | 9.9 cm | |
| December | 9.7 cm |
Monthly Sunshine Hours (daily average)
| Month | Avg Daily Sunshine | Bar |
|---|---|---|
| January | 7.7 hrs | |
| February | 8.8 hrs | |
| March | 9.5 hrs | |
| April | 10.7 hrs | |
| May | 11.5 hrs | |
| June | 12.4 hrs | |
| July | 12.9 hrs | |
| August | 12.0 hrs | |
| September | 11.0 hrs | |
| October | 9.8 hrs | |
| November | 8.4 hrs | |
| December | 7.8 hrs |
Frequently Asked Questions
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).
What is the rainiest month in Denver?
May is the wettest month with an average of 82.4mm of precipitation. The city experiences about 79.0 rainy days per year.
When is the best time to visit Denver?
The best time to visit Denver is during July, August, September, when temperatures are comfortable and rainfall is lower.
Cities with Similar Climate (Humid Continental)
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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.