Denver CO Average Temperatures by Month - Current Results

Denver Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Denver, Colorado during each month of the year.

The average high and low temperatures are listed below monthly and annually for Denver, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month in Denver, scroll down farther. There are also monthly and yearly counts of days with cold weather.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1981 to 2010 weather.

10-year temperature averages for Denver, 2010 to 2019
High °F Low °F   High °C Low °C
46 18 January 8 -8
44 18 February 7 -8
56 28 March 13 -2
62 34 April 17 1
68 43 May 20 6
85 54 June 29 12
89 60 July 32 16
88 58 August 31 14
82 51 September 28 10
66 37 October 19 3
55 26 November 13 -3
45 18 December 7 -8
65 37 Year 19 3
30-year temperature averages for Denver, 1981 to 2010
High °F Low °F   High °C Low °C
45 17 January 7 -8
46 20 February 8 -7
54 26 March 12 -3
61 34 April 16 1
71 44 May 21 7
81 53 June 27 12
88 59 July 31 15
86 57 August 30 14
77 48 September 25 9
65 36 October 18 2
52 25 November 11 -4
43 17 December 6 -9
64 36 Year 18 2

Days of Hot Weather in Denver

Denver usually gets a taste of scorching hot weather each year. On average, the thermometer hits 100 degrees Fahrenheit just one day in July. Temperatures in the 90s occur from June to September, including on about half of July days.

Winters are much cooler. Just a few days from December to February make it to 60 degrees, and none normally reach past 70.

Regardless of how warm the days get, Denver cools down at night to below 70 °F. Summer nights can stay in the 60s, but outside of July lows are more often down to the 50s. From October to April, nighttime temperatures in Denver normally fall below 50 degrees.

Average days per month in Denver of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 0 0 0
February 0 0 0
March 3 0 0
April 8 1 0
May 17 7 0
June 27 17 6
July 30 27 14
August 30 26 9
September 24 14 2
October 13 3 0
November 3 0 0
December 0 0 0
Year 155 96 31

How Often Denver Has Cold Temperatures

Denver more frequently has freezing temperatures than other metropolitan areas its size. Nighttime lows can drop to 32 degrees or less in all but three months a year.

The coldest nights get to zero degrees Fahrenheit or below. Temperatures in negative territory happen seven times a year on average, scattered amongst January, February and December.

Despite the frequency of night frost, Denver usually thaws during the day. Just 21 days a year typically have highs that don't break through the 32-degree freezing point. Weather this chilly shows up anytime from November to April, with any one month averaging at most six days.

Days per month on average in Denver when the minimum temperature drops to 10, 20, or 32 °F or below
  10 °F
-12 °C
20 °F
-8 °C
32 °F
0 °C
January 6 17 30
February 4 12 26
March 1 6 24
April 0 1 12
May 0 0 1
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 1
October 0 1 9
November 2 8 24
December 7 18 30
Year 20 63 157
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

NOAA National Centers for Environmental Information. 1981-2010 U.S. Climate Normals. (Data Access. FTP.)