Climateby Month

Arvada, CO weather in July

NOAA 1991-2020 normals and daily records · Arvada all year

In July, Arvada sees highs around 88°F and lows around 57°F: hot, with some rain. There are about 9 days with rain. It is one of the warmest months in Arvada.

Normal high
88°F
Normal low
57°F
Wet days
9
1.9 in total
Muggy days
0
dew point 65°F+

How July changes from start to finish

Normal values at the start and end of July
July 1July 31
Normal high87°F88°F
Normal low55°F57°F
Chance of a wet day27%30%
Sunrise / sunset5:35 am / 8:32 pm5:58 am / 8:15 pm
Daylight14.9 h14.3 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).

A typical July day

  1. 6 am64°Fdew point 50°F
  2. 9 am76°Fdew point 49°F
  3. Noon84°Fdew point 45°F
  4. 3 pm85°Fdew point 44°F
  5. 6 pm79°Fdew point 47°F
  6. 9 pm70°Fdew point 50°F

NOAA hourly normals (local standard time) from Aurora Buckley Fld ANGB (19 mi away); average wind 8 mph; clear or few clouds in 42% of daytime hours, mostly cloudy or overcast in 33%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F4 of 31
  • Hot dayshigh 90°F or more16 of 31
  • Muggy daysdaily mean dew point 65°F or more0 of 31
  • Wet daysat least 0.01 in of rain or melted snow9 of 31
  • Notable rainat least 0.10 in4 of 31
  • Freezing nightslow 32°F or below0 of 31
  • Snow on the groundsnow depth 1 in or more0 of 31

Average days per July, counted from daily records for each year 1991-2020.

Rain in July

Normal precipitation is 1.9 in; a dry July brings about 1.1 in and a wet one about 2.3 in (25th and 75th percentiles). About 1 day brings half an inch or more.

How July varies from year to year

  • Warmest July, 1991-20202002: average high 94°F
  • Coolest July2004: average high 85°F
  • Wettest July2013: 4.9 in
  • Driest July2008: 0.2 in
  • Highest reading102°F (July 21, 2005)
  • Lowest reading42°F (July 8, 1994)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

July compared with June and August

JuneJulyAugust
Normal high83°F88°F86°F
Normal low51°F57°F55°F
Wet days898
Comfortable days1045
Daylight14.9 h14.7 h13.7 h

Highs change by +5°F from June and -2°F into August.

Nearby alternatives in July

How Arvada ranks in July

  • Normal high176th warmest of 378 cities; 5th of 17 in Colorado
  • Wet days166th driest of 378
  • Comfortable days131st most of 340

What to pack for Arvada in July

  • Light, breathable clothing – highs near 88°F
  • Layers – afternoons near 88°F but nights near 57°F
  • A rain jacket or umbrella – rain on about 9 days
  • Sunglasses and sunscreen – about 14.7 hours of daylight and highs near 88°F

Heating and cooling

July has 6 heating degree days and 238 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.

Questions

How hot is Arvada in July?

The normal high is 88°F and the normal low is 57°F. From 1991 to 2020 the hottest July reading was 102°F (July 21, 2005).

Does it rain a lot in Arvada in July?

About 9 days in July have at least 0.01 in of precipitation, and the normal total is 1.9 in. The wettest July in 1991-2020 was in 2013 (4.9 in); the driest was in 2008 (0.2 in).

Is July a good time to visit Arvada?

July ranks 9th of 12 months on our comfort score for Arvada (51 out of 100). It has about 4 comfortable days and about 16 days at 90°F or hotter. The best month is May.

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.