Climate Overview
The climate in Denver is cool. The average annual temperature is 9°C and approximately 1033mm of precipitation falls per year. Denver receives a notable amount of rainfall throughout the year, including during its driest month. Denver is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, December, when temperatures can drop to -10°C. Snowfall occurs from January to December, with around 74cm accumulating over the season.
Temperature
Denver has a wide annual temperature range, spanning 38°C from the coldest to warmest months. The warmest month is July, when average highs reach 28°C and the mean temperature sits around 23°C. The coldest month is January, when overnight lows fall to -10°C and the daily average is -7°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 8°C shift in average temperatures.
Precipitation
Denver is a moderately rainy area, receiving approximately 1033mm of precipitation annually, which averages out to around 86mm per month. The wettest month is May, averaging 150mm of rainfall. June and August also tend to see above-average precipitation. The driest month is February, with just 39mm. That's 111mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 74cm accumulating over the season. January typically sees the most snow at around 18cm.
Wind
Denver is moderately windy, with an average annual wind speed of 22km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 27km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 18km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 9km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 23km/h in winter, 24km/h in spring, 19km/h in summer, 23km/h in autumn.
Seasons
87 days until Summer
It is currently spring in Denver, which began on March 20, 2026. Denver is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 28°C, while the coldest stretch bottoms out in January near -10°C. Summer is next, beginning on June 21, 2026 — 87 days from now.
Spring
Temperatures range from -2 to 22°C. Rainfall is heavy, totalling around 315mm across the season with a monthly average of 105mm. Winds are moderate at around 24km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 17 to 28°C. Rainfall is heavy, totalling around 332mm across the season with a monthly average of 111mm. Winds are moderate at around 19km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from -1 to 25°C. Precipitation is moderate at around 260mm for the season, averaging 87mm per month. Expect around 6cm of snow accumulation during this period. Winds are moderate at around 23km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -10 to 2°C. Rainfall is relatively light, with around 126mm over the season and a monthly average of 42mm. Expect around 49cm of snow accumulation during this period. Winds are moderate at around 23km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Monthly Climate Data
The table below shows monthly climate averages for Denver based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
