Climateby Month

Fort Collins, CO weather in July

NOAA 1991-2020 normals and daily records · Fort Collins all year

July in Fort Collins: warm, with some rain. Highs 87°F, lows 59°F, about 9 wet days. This is the peak of the warm season in Fort Collins.

Normal high
87°F
Normal low
59°F
Wet days
9
1.6 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 high86°F87°F
Normal low57°F59°F
Chance of a wet day29%32%
Sunrise / sunset5:33 am / 8:35 pm5:56 am / 8:16 pm
Daylight15.0 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 am65°Fdew point 50°F
  2. 9 am77°Fdew point 50°F
  3. Noon85°Fdew point 46°F
  4. 3 pm86°Fdew point 45°F
  5. 6 pm80°Fdew point 48°F
  6. 9 pm71°Fdew point 50°F

NOAA hourly normals (local standard time) from Denver Intl Airport (57 mi away); average wind 10 mph; clear or few clouds in 72% of daytime hours, mostly cloudy or overcast in 19%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F3 of 31
  • Hot dayshigh 90°F or more13 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 1.6 in; a dry July brings about 0.9 in and a wet one about 2.0 in (25th and 75th percentiles). About 1 day brings half an inch or more.

How July varies from year to year

  • Warmest July, 1991-20202003: average high 93°F
  • Coolest July1992: average high 81°F
  • Wettest July1997: 6.7 in
  • Driest July2002: 0.07 in
  • Highest reading103°F (July 21, 2005)
  • Lowest reading44°F (July 3, 1992)

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 high82°F87°F85°F
Normal low53°F59°F57°F
Wet days999
Comfortable days1136
Daylight15.0 h14.7 h13.7 h

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

Nearby alternatives in July

How Fort Collins ranks in July

  • Normal high185th warmest of 378 cities; 7th of 17 in Colorado
  • Wet days192nd driest of 378
  • Comfortable days140th most of 340

What to pack for Fort Collins in July

  • Light, breathable clothing – highs near 87°F
  • Layers – afternoons near 87°F but nights near 59°F
  • A rain jacket or umbrella – rain on about 9 days
  • Sunglasses and sunscreen – about 14.7 hours of daylight and highs near 87°F

Heating and cooling

July has 4 heating degree days and 253 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.

Questions

How hot is Fort Collins in July?

The normal high is 87°F and the normal low is 59°F. From 1991 to 2020 the hottest July reading was 103°F (July 21, 2005).

Does it rain a lot in Fort Collins in July?

About 9 days in July have at least 0.01 in of precipitation, and the normal total is 1.6 in. The wettest July in 1991-2020 was in 1997 (6.7 in); the driest was in 2002 (0.07 in).

Is July a good time to visit Fort Collins?

July ranks 8th of 12 months on our comfort score for Fort Collins (53 out of 100). It has about 3 comfortable days and about 13 days at 90°F or hotter. The best month is May.

Where the numbers come from

  • Temperature, rain, snowfall, snow depth and frost dates: Ft Collins (USC00053005), 0.6 mi S of the city center, 5,004 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Denver Intl Airport (USW00003017), 57 mi SSE of the city center, 5,414 ft (410 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Cloud cover: Cheyenne (USW00024018), 42 mi NNE of the city center, 6,128 ft (1,124 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Denver International Airport (725650-03017), 56 mi SSE of the city center, 5,404 ft (400 ft higher than the city). Hourly observations, 1991-2020.