Coal Creek, Jefferson County, Colorado
# Coal Creek, Jefferson County, Colorado

Coal Creek, commonly known as Coal Creek Canyon, is a census-designated place (CDP) located in and governed by Jefferson, Boulder, and Gilpin counties in Colorado, United States, but primarily Jefferson County. The population of the Coal Creek CDP was 2,494 at the United States Census 2020. The Golden post office (Zip code 80403) serves the area.

## Geography

The Coal Creek CDP has an area of 6,018 acres (24.355 $km^2),$ including 9.6 acres (0.039 $km^2)$ of water.

## Climate

According to the Köppen Climate Classification system, Coal Creek has a warm-summer humid continental climate, abbreviated "BSk" on climate maps, but closely borders on an oceanic climate (Cfb).

Climate data for Coal Creek Canyon, Colorado, 1991–2020 normals, extremes 1984–2019 :

| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Record high °F (°C) | 60 (16) | 58 (14) | 66 (19) | 73 (23) | 81 (27) | 88 (31) | 89 (32) | 87 (31) | 84 (29) | 75 (24) | 67 (19) | 60 (16) | 89 (32) |
| Mean maximum °F (°C) | 51.5 (10.8) | 51.4 (10.8) | 58.3 (14.6) | 63.9 (17.7) | 71.7 (22.1) | 80.5 (26.9) | 83.2 (28.4) | 81.0 (27.2) | 76.9 (24.9) | 68.7 (20.4) | 58.3 (14.6) | 51.6 (10.9) | 84.4 (29.1) |
| Average high °F (°C) | 33.4 (0.8) | 34.2 (1.2) | 41.2 (5.1) | 45.9 (7.7) | 55.3 (12.9) | 66.7 (19.3) | 73.0 (22.8) | 71.2 (21.8) | 64.3 (17.9) | 51.8 (11.0) | 40.9 (4.9) | 33.2 (0.7) | 50.9 (10.5) |
| Daily mean °F (°C) | 24.5 (−4.2) | 24.4 (−4.2) | 30.7 (−0.7) | 35.2 (1.8) | 44.0 (6.7) | 54.0 (12.2) | 60.3 (15.7) | 58.6 (14.8) | 51.7 (10.9) | 40.8 (4.9) | 31.0 (−0.6) | 24.0 (−4.4) | 39.9 (4.4) |
| Average low °F (°C) | 15.6 (−9.1) | 14.7 (−9.6) | 20.2 (−6.6) | 24.4 (−4.2) | 32.6 (0.3) | 41.2 (5.1) | 47.5 (8.6) | 46.1 (7.8) | 39.2 (4.0) | 29.8 (−1.2) | 21.1 (−6.1) | 14.8 (−9.6) | 28.9 (−1.7) |
| Mean minimum °F (°C) | −6.8 (−21.6) | −8.4 (−22.4) | −0.4 (−18.0) | 7.5 (−13.6) | 19.3 (−7.1) | 31.1 (−0.5) | 39.1 (3.9) | 36.7 (2.6) | 24.8 (−4.0) | 12.4 (−10.9) | 0.9 (−17.3) | −8.3 (−22.4) | −15.5 (−26.4) |
| Record low °F (°C) | −24 (−31) | −36 (−38) | −18 (−28) | −10 (−23) | 4 (−16) | 26 (−3) | 33 (1) | 30 (−1) | 3 (−16) | −11 (−24) | −17 (−27) | −30 (−34) | −36 (−38) |
| Average precipitation inches (mm) | 1.00 (25) | 1.32 (34) | 2.68 (68) | 3.79 (96) | 3.24 (82) | 2.19 (56) | 2.89 (73) | 2.84 (72) | 1.86 (47) | 1.66 (42) | 1.23 (31) | 1.13 (29) | 25.83 (655) |
| Average snowfall inches (cm) | 17.4 (44) | 23.2 (59) | 35.6 (90) | 42.0 (107) | 16.6 (42) | 0.9 (2.3) | 0.0 (0.0) | 0.0 (0.0) | 2.7 (6.9) | 16.1 (41) | 18.4 (47) | 21.8 (55) | 194.7 (494.2) |
| Average precipitation days (≥ 0.01 in) | 9.6 | 10.4 | 11.2 | 13.6 | 13.6 | 12.2 | 14.8 | 15.4 | 9.8 | 8.1 | 8.1 | 9.0 | 135.8 |
| Average snowy days (≥ 0.1 in) | 10.5 | 11.3 | 12.1 | 12.7 | 6.9 | 0.9 | 0.0 | 0.0 | 1.2 | 6.2 | 8.4 | 10.0 | 80.2 |
| Source 1: NOAA ||||||||||||||
| Source 2: National Weather Service (mean maxima and minima 1984–2019) ||||||||||||||

## Demographics

The United States Census Bureau initially defined the Coal Creek CDP for the United States Census 2000.

