Record envelope, standing records and threshold days for Coal Creek Canyon (USC00051681), Colorado, United States, with 36 years of record.
Key Facts for Coal Creek Canyon
Coal Creek Canyon (USC00051681) is a weather station in Colorado, United States at 39.90 latitude and -105.38 longitude, 2,728 m (8,950 ft) above sea level.
The station reports from 1984 to 2019, 36 years of record.
1,464 records set at Coal Creek Canyon still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Coal Creek Canyon set a monthly record low minimum temperature of -23.9 C (-11.0 F) on 30 October 2019.
About the Station
Location: Colorado, United States, 39.90 latitude, -105.38 longitude.
Elevation: 2,728 m (8,950 ft).
Period of record: 1984 to 2019, 36 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Coal Creek Canyon. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Coal Creek Canyon, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.6 C (60.1 F)
-31.1 C (-24.0 F)
n/a
n/a
Feb
14.4 C (57.9 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
18.9 C (66.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Apr
22.8 C (73.0 F)
-23.3 C (-9.9 F)
n/a
n/a
May
27.2 C (81.0 F)
-15.6 C (3.9 F)
n/a
n/a
Jun
31.1 C (88.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
31.7 C (89.1 F)
0.6 C (33.1 F)
n/a
n/a
Aug
30.6 C (87.1 F)
-1.1 C (30.0 F)
n/a
n/a
Sep
28.9 C (84.0 F)
-16.1 C (3.0 F)
n/a
n/a
Oct
23.9 C (75.0 F)
-23.9 C (-11.0 F)
n/a
n/a
Nov
19.4 C (66.9 F)
-27.2 C (-17.0 F)
n/a
n/a
Dec
15.6 C (60.1 F)
-34.4 C (-29.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Coal Creek Canyon still stand. 1989 holds the most, with 66.
Standing records at Coal Creek Canyon by the year they were set
Year set
Standing records
1984
20
1985
45
1986
46
1987
48
1988
40
1989
66
1990
51
1991
41
1992
38
1993
40
1994
30
1995
65
1996
55
1997
39
1998
30
1999
45
2000
60
2001
38
2002
41
2003
53
2004
39
2005
40
2006
49
2007
33
2008
31
2009
42
2010
22
2011
31
2012
35
2013
39
2014
45
2015
38
2016
32
2017
40
2018
28
2019
29
Wettest Day of Each Month
Mar: 123.2 mm (4.9 in)
The wettest day on record for each calendar month at Coal Creek Canyon. The most was 123.2 mm (4.9 in) on 18 March 2003.
Record daily precipitation for each month at Coal Creek Canyon
Month
Record daily precipitation (mm)
Date
Jan
32.3 mm (1.3 in)
28 January 1989
Feb
47.2 mm (1.9 in)
3 February 2012
Mar
123.2 mm (4.9 in)
18 March 2003
Apr
96.8 mm (3.8 in)
17 April 2009
May
73.9 mm (2.9 in)
18 May 2017
Jun
49.8 mm (2.0 in)
20 June 2011
Jul
46.5 mm (1.8 in)
22 July 1991
Aug
51.6 mm (2.0 in)
4 August 1999
Sep
67.1 mm (2.6 in)
12 September 2013
Oct
50.0 mm (2.0 in)
26 October 2006
Nov
25.1 mm (1.0 in)
2 November 2011
Dec
56.4 mm (2.2 in)
20 December 2006
Period of Record Coverage
1984 to 2019
Complete yearUnder 90 percent of days
36 years of record at Coal Creek Canyon, 1984 to 2019. 2 years have data for under 90 percent of days and are left out of rankings: 1984, 2019.
Cooler than the station meanWarmer than the station mean
One stripe for each of 34 complete years at Coal Creek Canyon, 1985 to 2018. Blue stripes are years cooler than the station's own mean of 4.5 C (40.1 F); red stripes are warmer. The coolest year was 1993, at 3.4 C (38.1 F), and the warmest was 2012, at 5.6 C (42.0 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Coal Creek Canyon as warming stripes, 1985 to 2018
Year
Annual mean temperature
Difference from the station mean
1985
3.4 C
-1.09 C
1986
4.5 C
+0.06 C
1987
3.9 C
-0.56 C
1988
4.3 C
-0.18 C
1989
3.9 C
-0.55 C
1990
4.1 C
-0.39 C
1991
4.0 C
-0.45 C
1992
4.3 C
-0.17 C
1993
3.4 C
-1.10 C
1994
5.0 C
+0.51 C
1995
4.5 C
-0.01 C
1996
4.6 C
+0.14 C
1997
3.9 C
-0.55 C
1998
4.6 C
+0.14 C
1999
5.0 C
+0.51 C
2000
5.3 C
+0.77 C
2001
5.4 C
+0.89 C
2002
4.9 C
+0.39 C
2003
5.3 C
+0.85 C
2004
4.3 C
-0.16 C
2005
4.7 C
+0.23 C
2006
4.6 C
+0.12 C
2007
4.7 C
+0.21 C
2008
3.8 C
-0.64 C
2009
3.7 C
-0.75 C
2010
4.3 C
-0.15 C
2011
4.1 C
-0.37 C
2012
5.6 C
+1.09 C
2013
3.8 C
-0.68 C
2014
4.2 C
-0.33 C
2015
4.9 C
+0.39 C
2016
5.1 C
+0.57 C
2017
5.4 C
+0.87 C
2018
4.9 C
+0.40 C
The annual mean temperature here has risen by 0.22 C (0.03 to 0.41) per decade over 1985 to 2018. In Fahrenheit: 0.39 F (0.05 to 0.74) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Coal Creek Canyon
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.22 C (0.03 to 0.41) per decade
0.39 F (0.05 to 0.74) per decade
1985 to 2018
34
Rise
Mean daily maximum
0.1 C (-0.1 to 0.4) per decade
0.2 F (-0.2 to 0.7) per decade
1985 to 2018
34
Not clearly different from zero
Mean daily minimum
0.3 C (0.1 to 0.5) per decade
0.6 F (0.3 to 0.8) per decade
1985 to 2018
34
Rise
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1984 to 2019
Yearly extremes at Coal Creek Canyon: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
31.7 C (89.1 F)
2003
28.9 C (84.0 F)
36
Coldest night (TNn)
-37.8 C (-36.0 F)
1989
-26.1 C (-15.0 F)
36
Wettest day (Rx1day)
123.2 mm (4.9 in)
2003
52.2 mm (2.1 in)
36
Wettest five days (Rx5day)
230.1 mm (9.1 in)
2003
77.6 mm (3.1 in)
36
Longest dry spell (CDD)
34 days
1992
21 days
36
Hottest day (TXx)
The hottest day of the year at Coal Creek Canyon, 1984 to 2019. The record is 31.7 C (89.1 F) in 2003, marked on the chart; the median year is 28.9 C (84.0 F).
Hottest day (TXx) at Coal Creek Canyon by year
Year
Hottest day (TXx)
1984
27.8 C (82.0 F)
1985
28.3 C (82.9 F)
1986
30.0 C (86.0 F)
1987
27.8 C (82.0 F)
1988
27.8 C (82.0 F)
1989
29.4 C (84.9 F)
1990
29.4 C (84.9 F)
1991
26.7 C (80.1 F)
1992
28.3 C (82.9 F)
1993
29.4 C (84.9 F)
1994
30.0 C (86.0 F)
1995
30.0 C (86.0 F)
1996
30.6 C (87.1 F)
1997
28.3 C (82.9 F)
1998
31.1 C (88.0 F)
1999
28.3 C (82.9 F)
2000
30.6 C (87.1 F)
2001
30.6 C (87.1 F)
2002
31.1 C (88.0 F)
2003
31.7 C (89.1 F)
2004
28.9 C (84.0 F)
2005
30.6 C (87.1 F)
2006
29.4 C (84.9 F)
2007
28.3 C (82.9 F)
2008
28.9 C (84.0 F)
2009
28.3 C (82.9 F)
2010
28.3 C (82.9 F)
2011
27.2 C (81.0 F)
2012
31.1 C (88.0 F)
2013
28.3 C (82.9 F)
2014
27.8 C (82.0 F)
2015
27.8 C (82.0 F)
2016
28.9 C (84.0 F)
2017
28.3 C (82.9 F)
2018
27.8 C (82.0 F)
2019
28.9 C (84.0 F)
Coldest night (TNn)
The coldest night of the year at Coal Creek Canyon, 1984 to 2019. The record is -37.8 C (-36.0 F) in 1989, marked on the chart; the median year is -26.1 C (-15.0 F).
Coldest night (TNn) at Coal Creek Canyon by year
Year
Coldest night (TNn)
1984
-20.0 C (-4.0 F)
1985
-32.2 C (-26.0 F)
1986
-25.0 C (-13.0 F)
1987
-24.4 C (-11.9 F)
1988
-22.8 C (-9.0 F)
1989
-37.8 C (-36.0 F)
1990
-34.4 C (-29.9 F)
1991
-24.4 C (-11.9 F)
1992
-26.1 C (-15.0 F)
1993
-25.6 C (-14.1 F)
1994
-26.1 C (-15.0 F)
1995
-22.2 C (-8.0 F)
1996
-26.7 C (-16.1 F)
1997
-29.4 C (-20.9 F)
1998
-26.1 C (-15.0 F)
1999
-17.8 C (0.0 F)
2000
-17.8 C (0.0 F)
2001
-24.4 C (-11.9 F)
2002
-27.8 C (-18.0 F)
2003
-27.2 C (-17.0 F)
2004
-26.7 C (-16.1 F)
2005
-30.6 C (-23.1 F)
2006
-27.2 C (-17.0 F)
2007
-26.1 C (-15.0 F)
2008
-25.0 C (-13.0 F)
2009
-25.6 C (-14.1 F)
2010
-24.4 C (-11.9 F)
2011
-33.9 C (-29.0 F)
2012
-20.6 C (-5.1 F)
2013
-28.3 C (-18.9 F)
2014
-29.4 C (-20.9 F)
2015
-25.0 C (-13.0 F)
2016
-26.7 C (-16.1 F)
2017
-25.0 C (-13.0 F)
2018
-24.4 C (-11.9 F)
2019
-26.1 C (-15.0 F)
Wettest day (Rx1day)
The wettest day of the year at Coal Creek Canyon, 1984 to 2019. The record is 123.2 mm (4.9 in) in 2003, marked on the chart; the median year is 52.2 mm (2.1 in).
Wettest day (Rx1day) at Coal Creek Canyon by year
Year
Wettest day (Rx1day)
1984
41.4 mm (1.6 in)
1985
22.1 mm (0.9 in)
1986
79.0 mm (3.1 in)
1987
41.9 mm (1.6 in)
1988
48.8 mm (1.9 in)
1989
32.3 mm (1.3 in)
1990
101.6 mm (4.0 in)
1991
46.5 mm (1.8 in)
1992
52.8 mm (2.1 in)
1993
30.2 mm (1.2 in)
1994
23.1 mm (0.9 in)
1995
54.1 mm (2.1 in)
1996
29.5 mm (1.2 in)
1997
70.6 mm (2.8 in)
1998
54.1 mm (2.1 in)
1999
51.6 mm (2.0 in)
2000
21.8 mm (0.9 in)
2001
24.6 mm (1.0 in)
2002
28.4 mm (1.1 in)
2003
123.2 mm (4.9 in)
2004
49.3 mm (1.9 in)
2005
53.8 mm (2.1 in)
2006
56.4 mm (2.2 in)
2007
72.6 mm (2.9 in)
2008
25.7 mm (1.0 in)
2009
96.8 mm (3.8 in)
2010
41.1 mm (1.6 in)
2011
53.6 mm (2.1 in)
2012
47.2 mm (1.9 in)
2013
67.1 mm (2.6 in)
2014
46.0 mm (1.8 in)
2015
57.2 mm (2.3 in)
2016
71.4 mm (2.8 in)
2017
73.9 mm (2.9 in)
2018
54.9 mm (2.2 in)
2019
55.9 mm (2.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Coal Creek Canyon, 1984 to 2019. The record is 230.1 mm (9.1 in) in 2003, marked on the chart; the median year is 77.6 mm (3.1 in).
Wettest five days (Rx5day) at Coal Creek Canyon by year
Year
Wettest five days (Rx5day)
1984
77.5 mm (3.1 in)
1985
46.0 mm (1.8 in)
1986
133.4 mm (5.3 in)
1987
59.4 mm (2.3 in)
1988
106.7 mm (4.2 in)
1989
49.6 mm (2.0 in)
1990
119.3 mm (4.7 in)
1991
81.0 mm (3.2 in)
1992
105.4 mm (4.1 in)
1993
53.0 mm (2.1 in)
1994
37.8 mm (1.5 in)
1995
78.0 mm (3.1 in)
1996
69.4 mm (2.7 in)
1997
105.2 mm (4.1 in)
1998
72.4 mm (2.9 in)
1999
74.5 mm (2.9 in)
2000
48.6 mm (1.9 in)
2001
60.4 mm (2.4 in)
2002
42.9 mm (1.7 in)
2003
230.1 mm (9.1 in)
2004
77.7 mm (3.1 in)
2005
63.7 mm (2.5 in)
2006
71.1 mm (2.8 in)
2007
80.1 mm (3.2 in)
2008
50.0 mm (2.0 in)
2009
145.6 mm (5.7 in)
2010
89.7 mm (3.5 in)
2011
93.9 mm (3.7 in)
2012
57.4 mm (2.3 in)
2013
202.3 mm (8.0 in)
2014
77.7 mm (3.1 in)
2015
112.9 mm (4.4 in)
2016
91.0 mm (3.6 in)
2017
96.0 mm (3.8 in)
2018
68.9 mm (2.7 in)
2019
57.5 mm (2.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Coal Creek Canyon, 1984 to 2019. The record is 34 days in 1992, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Coal Creek Canyon by year
Year
Longest dry spell (CDD)
1984
28 days
1985
21 days
1986
28 days
1987
26 days
1988
28 days
1989
20 days
1990
19 days
1991
19 days
1992
34 days
1993
22 days
1994
24 days
1995
15 days
1996
18 days
1997
24 days
1998
16 days
1999
33 days
2000
20 days
2001
17 days
2002
28 days
2003
31 days
2004
18 days
2005
20 days
2006
19 days
2007
20 days
2008
22 days
2009
18 days
2010
20 days
2011
20 days
2012
31 days
2013
18 days
2014
17 days
2015
24 days
2016
28 days
2017
22 days
2018
22 days
2019
18 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
34 years with a frost
Across 34 years with a frost, the median last spring frost at Coal Creek Canyon falls on 8 June and the median first autumn frost on 16 September, which leaves a median of 100 days between them.
Fitted over all years, the growing season changes by +3.6 days per decade at this station.
Frost dates and growing season at Coal Creek Canyon
Measure
Median, all years
Earliest period
Recent period (1989 to 2018)
Recent against earliest
Fitted trend
Last spring frost
8 June
n/a
8 June
n/a
-2.7 days per decade
First autumn frost
16 September
n/a
16 September
n/a
+1.0 days per decade
Growing days
100 days
n/a
99 days
n/a
+3.6 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
34 years, 1985 to 2018
A day with at least 49.2 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 127.8 mm (5.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Coal Creek Canyon: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
49.2 mm (1.9 in)
5 years
70.4 mm (2.8 in)
10 years
84.4 mm (3.3 in)
25 years
102.0 mm (4.0 in)
50 years
115.0 mm (4.5 in)
Longer than the 34 years of record
100 years
127.8 mm (5.0 in)
Longer than the 34 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 34 years of values from 1985 to 2018.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 123.2 mm (4.9 in) in 2003; 101.6 mm (4.0 in) in 1990; 96.8 mm (3.8 in) in 2009.
Download the Data
Data for Coal Creek Canyon standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Coal Creek Canyon threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-12 (12 October 2026). Records are computed by this site and are not official.