Climateby Month

Arvada, CO climate by month

NOAA 1991-2020 normals · 5,349 ft elevation

Arvada has hot summers and chilly and snowy winters. Highs peak at 88°F in July and fall to 47°F in December. The wettest month is May (about 10 wet days) and the driest is December (about 5). Normal snowfall is about 76 in a year. By our comfort score the best month is May.

Warmest month
88°F
July normal high
Coldest month
17°F
December normal low
Wet days a year
87
17.1 in of precipitation
Snow a year
75.5 in
normal snowfall

How warm is Arvada?

Normal highs range from 47°F in December to 88°F in July.

0°20°40°60°80°100° January: normal high 47°F (8°C), low 17°F (-8°C) 47° 17° February: normal high 48°F (9°C), low 18°F (-8°C) March: normal high 57°F (14°C), low 26°F (-3°C) April: normal high 62°F (17°C), low 33°F (1°C) May: normal high 71°F (22°C), low 43°F (6°C) June: normal high 83°F (28°C), low 51°F (11°C) July: normal high 88°F (31°C), low 57°F (14°C) 88° 57° August: normal high 86°F (30°C), low 55°F (13°C) September: normal high 79°F (26°C), low 45°F (7°C) October: normal high 66°F (19°C), low 34°F (1°C) November: normal high 55°F (13°C), low 24°F (-4°C) December: normal high 47°F (8°C), low 17°F (-8°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Arvada?

May has the most wet days (about 10); the year brings about 17 in of precipitation.

January: 5 wet days February: 6 wet days March: 7 wet days April: 9 wet days May: 10 wet days 10 June: 8 wet days July: 9 wet days August: 8 wet days September: 7 wet days October: 6 wet days November: 6 wet days December: 5 wet days 5 JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How much does it snow?

Normal snowfall is 75.5 in a year, most of it in March.

January: 9.6 in of snow February: 11.9 in of snow March: 12.9 in of snow 12.9 April: 12.1 in of snow May: 2.2 in of snow June: 0.0 in of snow 0.0 July: 0.0 in of snow August: 0.0 in of snow September: 1.0 in of snow October: 5.9 in of snow November: 10.0 in of snow December: 9.9 in of snow JFMAMJJASOND

How humid is Arvada?

Muggy days (dew point 65°F or higher) are rare in any month.

January: 0 muggy days 0 February: 0 muggy days March: 0 muggy days April: 0 muggy days May: 0 muggy days June: 0 muggy days July: 0 muggy days August: 0 muggy days September: 0 muggy days October: 0 muggy days November: 0 muggy days December: 0 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at Buckley Air Force Base, 19 mi ESE of the city center (the nearest airport with complete hourly records).

How much daylight?

Daylight ranges from about 9.4 hours in December to 14.9 hours in June.

January: 9.7 hours of daylight February: 10.7 hours of daylight March: 12.0 hours of daylight April: 13.3 hours of daylight May: 14.4 hours of daylight June: 14.9 hours of daylight 14.9 July: 14.7 hours of daylight August: 13.7 hours of daylight September: 12.4 hours of daylight October: 11.1 hours of daylight November: 10.0 hours of daylight December: 9.4 hours of daylight 9.4 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Arvada, 1991-2020
MonthHighLowPrecip.Wet daysSnowMuggy daysDaylight
January 47°F17°F 0.6 in5 9.6 in 0 9.7 h
February 48°F18°F 0.8 in6 11.9 in 0 10.7 h
March 57°F26°F 1.5 in7 12.9 in 0 12.0 h
April 62°F33°F 2.3 in9 12.1 in 0 13.3 h
May 71°F43°F 2.6 in10 2.2 in 0 14.4 h
June 83°F51°F 1.7 in8 0.0 in 0 14.9 h
July 88°F57°F 1.9 in9 0.0 in 0 14.7 h
August 86°F55°F 1.6 in8 0.0 in 0 13.7 h
September 79°F45°F 1.3 in7 1.0 in 0 12.4 h
October 66°F34°F 1.2 in6 5.9 in 0 11.1 h
November 55°F24°F 0.9 in6 10.0 in 0 10.0 h
December 47°F17°F 0.6 in5 9.9 in 0 9.4 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Arvada

By our comfort score, the best month is May.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 42228
Feb 47437
Mar 591044
Apr 671362
May 731661
Jun 641048
Jul 514416
Aug 535412
Sep 621143
Oct 651432
Nov 54935
Dec 41229

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Arvada

The last spring frost typically comes around May 5, and the first fall frost around Oct 5, leaving 151 frost-free days in a typical year.

Frost and freeze dates for Arvada
Typical date1 year in 10
Last spring frost (32°F)May 5after May 18
First fall frost (32°F)Oct 5before Sep 20
Last hard freeze (28°F)Apr 25after May 9
First hard freeze (28°F)Oct 14before Sep 28
Frost-free season151 daysunder 132 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Wheat Ridge 2 (USC00058995), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Colorado.

Hottest and coldest readings, 1991-2020

The highest reading was 103°F (June 26, 2012); the lowest was -12°F (December 31, 2014, and 1 other day).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Arvada

Similar climates elsewhere

Where the numbers come from

  • Temperature, rain, snowfall, snow depth and frost dates: Wheat Ridge 2 (USC00058995), 2.5 mi SW of the city center, 5,398 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour and cloud cover: Aurora Buckley Fld ANGB (USW00023036), 19 mi ESE of the city center, 5,663 ft (314 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Buckley Air Force Base (724695-23036), 19 mi ESE of the city center, 5,663 ft (314 ft higher than the city). Hourly observations, 1991-2020.

Distances from the city center (USGS). Methodology · Report an error