Denver-Stapleton Weather Records (USW00023062)

Record envelope, standing records and threshold days for Denver-Stapleton (USW00023062), Colorado, United States, with 79 years of record.

Key Facts for Denver-Stapleton

Denver-Stapleton (USW00023062) is a weather station in Colorado, United States at 39.76 latitude and -104.87 longitude, 1,611 m (5,286 ft) above sea level.
The station reports from 1948 to 2026, 79 years of record.
1,464 records set at Denver-Stapleton still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Denver-Stapleton set a daily record high maximum temperature of 36.1 C (97.0 F) on 28 August 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: Colorado, United States, 39.76 latitude, -104.87 longitude.
Elevation: 1,611 m (5,286 ft).
Period of record: 1948 to 2026, 79 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

22 days at or beyond a record

The band shows the record high and record low for each calendar day at Denver-Stapleton. The lines show the 2026 daily maximum and minimum. 22 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Denver-Stapleton, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	23.3 C (73.9 F)	-31.7 C (-25.1 F)	22.2 C (72.0 F)	-17.8 C (0.0 F)
Feb	28.3 C (82.9 F)	-31.7 C (-25.1 F)	20.6 C (69.1 F)	-12.8 C (9.0 F)
Mar	30.6 C (87.1 F)	-23.3 C (-9.9 F)	30.6 C (87.1 F)	-10.0 C (14.0 F)
Apr	32.2 C (90.0 F)	-18.9 C (-2.0 F)	28.3 C (82.9 F)	-4.4 C (24.1 F)
May	35.6 C (96.1 F)	-5.6 C (21.9 F)	35.6 C (96.1 F)	-2.8 C (27.0 F)
Jun	40.0 C (104.0 F)	-1.1 C (30.0 F)	35.6 C (96.1 F)	8.3 C (46.9 F)
Jul	40.0 C (104.0 F)	6.1 C (43.0 F)	38.3 C (100.9 F)	11.1 C (52.0 F)
Aug	38.9 C (102.0 F)	5.0 C (41.0 F)	38.9 C (102.0 F)	10.0 C (50.0 F)
Sep	37.2 C (99.0 F)	-8.3 C (17.1 F)	n/a	n/a
Oct	31.7 C (89.1 F)	-16.1 C (3.0 F)	n/a	n/a
Nov	27.8 C (82.0 F)	-23.3 C (-9.9 F)	n/a	n/a
Dec	24.4 C (75.9 F)	-31.7 C (-25.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Denver-Stapleton still stand. 1962 holds the most, with 42.

Standing records at Denver-Stapleton by the year they were set
Year set	Standing records
1948	24
1949	8
1950	32
1951	26
1952	19
1953	17
1954	27
1955	17
1956	19
1957	12
1958	17
1959	13
1960	23
1961	24
1962	42
1963	27
1964	15
1965	20
1966	8
1967	15
1968	13
1969	30
1970	12
1971	25
1972	29
1973	16
1974	21
1975	19
1976	13
1977	10
1978	18
1979	13
1980	16
1981	18
1982	11
1983	27
1984	11
1985	31
1986	13
1987	14
1988	9
1989	32
1990	29
1991	13
1992	16
1993	13
1994	17
1995	19
1996	23
1997	15
1998	12
1999	15
2000	14
2001	11
2002	21
2003	25
2004	23
2005	15
2006	21
2007	5
2008	14
2009	20
2010	10
2011	11
2012	14
2013	18
2014	21
2015	17
2016	21
2017	28
2018	18
2019	18
2020	27
2021	26
2022	16
2023	17
2024	16
2025	16
2026	23

All-Time Record Progression

7 new records

7 all-time records were set at Denver-Stapleton between 21 November 1979 and 12 September 2013. Each dot is a new record.

When Denver-Stapleton set new all-time records
Date	Kind	Detail
1979-11-21	Record snow depth	Record snow depth 43.2 cm (17.0 in)
1982-12-24	Record daily snowfall	Record daily snowfall 59.9 cm (23.6 in)
1982-12-25	Record snow depth	Record snow depth 61.0 cm (24.0 in)
1994-06-26	Record high maximum temperature	Record high maximum temperature 40.0 C (104.0 F)
1997-07-19	Record daily precipitation	Record daily precipitation 97.3 mm (3.8 in)
2003-07-25	Record high minimum temperature	Record high minimum temperature 22.2 C (72.0 F)
2013-09-12	Record daily precipitation	Record daily precipitation 98.6 mm (3.9 in)

Wettest Day of Each Month

Sep: 98.6 mm (3.9 in)

The wettest day on record for each calendar month at Denver-Stapleton. The most was 98.6 mm (3.9 in) on 12 September 2013.

Record daily precipitation for each month at Denver-Stapleton
Month	Record daily precipitation (mm)	Date
Jan	23.4 mm (0.9 in)	8 January 1962
Feb	25.7 mm (1.0 in)	19 February 1953
Mar	78.7 mm (3.1 in)	19 March 2003
Apr	82.6 mm (3.3 in)	13 April 1967
May	84.3 mm (3.3 in)	12 May 2023
Jun	80.3 mm (3.2 in)	11 June 1970
Jul	97.3 mm (3.8 in)	19 July 1997
Aug	96.8 mm (3.8 in)	19 August 2004
Sep	98.6 mm (3.9 in)	12 September 2013
Oct	40.1 mm (1.6 in)	18 October 1960
Nov	24.1 mm (0.9 in)	20 November 1979
Dec	50.8 mm (2.0 in)	24 December 1982

Period of Record Coverage

1948 to 2026

79 years of record at Denver-Stapleton, 1948 to 2026. 1 years have data for under 90 percent of days and are left out of rankings: 2026.

Days with data per year at Denver-Stapleton
Year	Days with data	Share of year	Complete
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	363	99%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	365	100%	Yes
2001	364	100%	Yes
2002	365	100%	Yes
2003	362	99%	Yes
2004	365	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	334	92%	Yes
2010	365	100%	Yes
2011	364	100%	Yes
2012	366	100%	Yes
2013	364	100%	Yes
2014	362	99%	Yes
2015	364	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	365	100%	Yes
2020	366	100%	Yes
2021	365	100%	Yes
2022	352	96%	Yes
2023	365	100%	Yes
2024	366	100%	Yes
2025	364	100%	Yes
2026	242	66%	No

Latest Records

Latest records at Denver-Stapleton
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 August 2026	Denver-Stapleton, US	daily high max (Provisional)	36.1 C (97.0 F)	0.5 C (0.9 F)	24 years	15 of 100 (Routine)
23 August 2026	Denver-Stapleton, US	daily high min (Tie, Provisional)	18.9 C (66.0 F)	tie	45 years	5 of 100 (Routine)
21 August 2026	Denver-Stapleton, US	daily high max (Provisional)	37.8 C (100.0 F)	1.1 C (2.0 F)	7 years	11 of 100 (Routine)
11 August 2026	Denver-Stapleton, US	daily high min (Tie)	19.4 C (66.9 F)	tie	31 years	4 of 100 (Routine)
9 August 2026	Denver-Stapleton, US	daily high max	37.2 C (99.0 F)	1.1 C (2.0 F)	25 years	16 of 100 (Routine)
3 August 2026	Denver-Stapleton, US	monthly high max (Tie)	38.9 C (102.0 F)	tie	24 years	6 of 100 (Routine)
27 July 2026	Denver-Stapleton, US	daily high min	20.0 C (68.0 F)	1.1 C (2.0 F)	72 years	32 of 100 (Routine)
26 July 2026	Denver-Stapleton, US	daily high max	38.3 C (100.9 F)	1.6 C (2.9 F)	31 years	20 of 100 (Routine)
26 July 2026	Denver-Stapleton, US	daily high min (Tie)	19.4 C (66.9 F)	tie	72 years	7 of 100 (Routine)
25 July 2026	Denver-Stapleton, US	daily high max (Tie)	38.3 C (100.9 F)	tie	23 years	3 of 100 (Routine)
19 May 2026	Denver-Stapleton, US	daily low min (Tie)	0.0 C (32.0 F)	tie	57 years	6 of 100 (Routine)
18 May 2026	Denver-Stapleton, US	daily low max	6.7 C (44.1 F)	1.6 C (2.9 F)	44 years	22 of 100 (Routine)
15 May 2026	Denver-Stapleton, US	daily high max (Tie)	32.8 C (91.0 F)	tie	29 years	3 of 100 (Routine)
14 May 2026	Denver-Stapleton, US	daily high min	15.6 C (60.1 F)	2.8 C (5.0 F)	71 years	35 of 100 (Notable)
14 May 2026	Denver-Stapleton, US	monthly high max (Tie)	35.6 C (96.1 F)	tie	22 years	5 of 100 (Routine)
13 May 2026	Denver-Stapleton, US	daily high max	32.2 C (90.0 F)	1.6 C (2.9 F)	37 years	20 of 100 (Routine)
11 May 2026	Denver-Stapleton, US	daily high max	34.4 C (93.9 F)	1.6 C (2.9 F)	8 years	11 of 100 (Routine)
9 May 2026	Denver-Stapleton, US	daily high max	31.7 C (89.1 F)	1.7 C (3.1 F)	64 years	28 of 100 (Routine)
5 May 2026	Denver-Stapleton, US	daily snow depth	2.5 cm (1.0 in)	2.5 cm (1.0 in)	77 years	20 of 100 (Routine)
30 March 2026	Denver-Stapleton, US	daily high max	26.7 C (80.1 F)	0.6 C (1.1 F)	40 years	19 of 100 (Routine)

Climate Trend

77 complete years, 1948 to 2025

One stripe for each of 77 complete years at Denver-Stapleton, 1948 to 2025. Blue stripes are years cooler than the station's own mean of 10.4 C (50.7 F); red stripes are warmer. The coolest year was 1951, at 9.0 C (48.3 F), and the warmest was 1981, at 12.3 C (54.1 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Denver-Stapleton as warming stripes, 1948 to 2025
Year	Annual mean temperature	Difference from the station mean
1948	9.6 C	-0.84 C
1949	9.8 C	-0.62 C
1950	10.3 C	-0.08 C
1951	9.0 C	-1.36 C
1952	10.4 C	+0.04 C
1953	11.0 C	+0.61 C
1954	11.9 C	+1.54 C
1955	10.1 C	-0.33 C
1956	10.8 C	+0.41 C
1957	10.1 C	-0.31 C
1958	10.7 C	+0.33 C
1959	10.0 C	-0.43 C
1960	9.8 C	-0.59 C
1961	9.3 C	-1.06 C
1962	9.8 C	-0.60 C
1963	10.4 C	+0.01 C
1964	9.8 C	-0.60 C
1965	9.8 C	-0.61 C
1966	10.3 C	-0.15 C
1967	9.6 C	-0.77 C
1968	9.4 C	-1.04 C
1969	10.0 C	-0.45 C
1970	9.7 C	-0.69 C
1971	9.7 C	-0.72 C
1972	9.9 C	-0.49 C
1973	9.9 C	-0.46 C
1974	10.2 C	-0.17 C
1975	9.7 C	-0.75 C
1976	10.5 C	+0.12 C
1977	11.4 C	+1.00 C
1978	9.8 C	-0.56 C
1979	9.7 C	-0.71 C
1980	11.2 C	+0.80 C
1981	12.3 C	+1.85 C
1982	9.6 C	-0.78 C
1983	9.1 C	-1.35 C
1984	9.6 C	-0.78 C
1985	9.4 C	-1.01 C
1986	11.2 C	+0.78 C
1987	10.7 C	+0.30 C
1988	10.7 C	+0.27 C
1989	10.3 C	-0.13 C
1990	10.8 C	+0.44 C
1991	10.6 C	+0.22 C
1992	10.6 C	+0.22 C
1993	9.8 C	-0.65 C
1994	11.8 C	+1.44 C
1995	10.1 C	-0.31 C
1996	10.5 C	+0.07 C
1997	9.9 C	-0.49 C
1998	10.7 C	+0.32 C
1999	11.2 C	+0.78 C
2000	10.9 C	+0.52 C
2001	10.9 C	+0.48 C
2002	10.5 C	+0.11 C
2003	10.8 C	+0.36 C
2004	10.2 C	-0.21 C
2005	10.7 C	+0.26 C
2006	10.8 C	+0.38 C
2007	10.2 C	-0.22 C
2008	9.8 C	-0.58 C
2010	10.4 C	+0.03 C
2011	9.8 C	-0.59 C
2012	11.9 C	+1.47 C
2013	9.8 C	-0.57 C
2014	10.1 C	-0.27 C
2015	10.9 C	+0.53 C
2016	11.6 C	+1.16 C
2017	11.7 C	+1.25 C
2018	11.0 C	+0.63 C
2019	9.9 C	-0.50 C
2020	11.3 C	+0.89 C
2021	11.4 C	+1.01 C
2022	10.8 C	+0.35 C
2023	10.3 C	-0.11 C
2024	11.5 C	+1.12 C
2025	11.3 C	+0.90 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1948 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 77 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Denver-Stapleton
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (0.1 to 0.2) per decade	0.2 F (0.1 to 0.3) per decade	1948 to 2025	77	Rise
Mean daily maximum	0.2 C (0.1 to 0.2) per decade	0.3 F (0.1 to 0.4) per decade	1948 to 2025	77	Rise
Mean daily minimum	0.10 C (0.03 to 0.17) per decade	0.17 F (0.05 to 0.30) per decade	1948 to 2025	77	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

1948 to 2026

Yearly extremes at Denver-Stapleton: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	1994	37.2 C (99.0 F)	79
Coldest night (TNn)	-31.7 C (-25.1 F)	1951	-23.3 C (-9.9 F)	79
Wettest day (Rx1day)	98.6 mm (3.9 in)	2013	37.1 mm (1.5 in)	79
Wettest five days (Rx5day)	129.6 mm (5.1 in)	2013	57.0 mm (2.2 in)	79
Longest dry spell (CDD)	71 days	2021	30 days	79

Hottest day (TXx)

The hottest day of the year at Denver-Stapleton, 1948 to 2026. The record is 40.0 C (104.0 F) in 1994, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Denver-Stapleton by year
Year	Hottest day (TXx)
1948	35.0 C (95.0 F)
1949	35.0 C (95.0 F)
1950	33.9 C (93.0 F)
1951	36.1 C (97.0 F)
1952	36.1 C (97.0 F)
1953	37.2 C (99.0 F)
1954	38.9 C (102.0 F)
1955	37.2 C (99.0 F)
1956	35.6 C (96.1 F)
1957	36.1 C (97.0 F)
1958	35.6 C (96.1 F)
1959	36.1 C (97.0 F)
1960	36.7 C (98.1 F)
1961	37.2 C (99.0 F)
1962	37.8 C (100.0 F)
1963	37.2 C (99.0 F)
1964	36.7 C (98.1 F)
1965	36.1 C (97.0 F)
1966	36.7 C (98.1 F)
1967	33.9 C (93.0 F)
1968	36.1 C (97.0 F)
1969	37.8 C (100.0 F)
1970	36.7 C (98.1 F)
1971	38.3 C (100.9 F)
1972	37.8 C (100.0 F)
1973	39.4 C (102.9 F)
1974	35.6 C (96.1 F)
1975	35.0 C (95.0 F)
1976	36.7 C (98.1 F)
1977	36.7 C (98.1 F)
1978	36.7 C (98.1 F)
1979	37.2 C (99.0 F)
1980	37.8 C (100.0 F)
1981	37.8 C (100.0 F)
1982	37.2 C (99.0 F)
1983	35.6 C (96.1 F)
1984	36.1 C (97.0 F)
1985	36.7 C (98.1 F)
1986	37.2 C (99.0 F)
1987	36.7 C (98.1 F)
1988	37.2 C (99.0 F)
1989	39.4 C (102.9 F)
1990	38.9 C (102.0 F)
1991	37.8 C (100.0 F)
1992	37.2 C (99.0 F)
1993	37.2 C (99.0 F)
1994	40.0 C (104.0 F)
1995	37.2 C (99.0 F)
1996	36.7 C (98.1 F)
1997	37.8 C (100.0 F)
1998	37.8 C (100.0 F)
1999	35.6 C (96.1 F)
2000	37.8 C (100.0 F)
2001	37.2 C (99.0 F)
2002	38.9 C (102.0 F)
2003	38.9 C (102.0 F)
2004	37.8 C (100.0 F)
2005	40.0 C (104.0 F)
2006	37.8 C (100.0 F)
2007	37.2 C (99.0 F)
2008	38.9 C (102.0 F)
2009	35.6 C (96.1 F)
2010	38.3 C (100.9 F)
2011	36.7 C (98.1 F)
2012	40.0 C (104.0 F)
2013	38.3 C (100.9 F)
2014	36.1 C (97.0 F)
2015	36.1 C (97.0 F)
2016	39.4 C (102.9 F)
2017	38.9 C (102.0 F)
2018	40.0 C (104.0 F)
2019	37.8 C (100.0 F)
2020	37.2 C (99.0 F)
2021	38.9 C (102.0 F)
2022	38.3 C (100.9 F)
2023	37.2 C (99.0 F)
2024	37.2 C (99.0 F)
2025	38.3 C (100.9 F)
2026	38.9 C (102.0 F)

Coldest night (TNn)

The coldest night of the year at Denver-Stapleton, 1948 to 2026. The record is -31.7 C (-25.1 F) in 1951, marked on the chart; the median year is -23.3 C (-9.9 F).

Coldest night (TNn) at Denver-Stapleton by year
Year	Coldest night (TNn)
1948	-28.9 C (-20.0 F)
1949	-28.3 C (-18.9 F)
1950	-25.6 C (-14.1 F)
1951	-31.7 C (-25.1 F)
1952	-21.7 C (-7.1 F)
1953	-18.9 C (-2.0 F)
1954	-20.6 C (-5.1 F)
1955	-20.6 C (-5.1 F)
1956	-20.6 C (-5.1 F)
1957	-20.6 C (-5.1 F)
1958	-20.6 C (-5.1 F)
1959	-25.0 C (-13.0 F)
1960	-23.9 C (-11.0 F)
1961	-26.7 C (-16.1 F)
1962	-31.1 C (-24.0 F)
1963	-31.7 C (-25.1 F)
1964	-22.2 C (-8.0 F)
1965	-20.6 C (-5.1 F)
1966	-25.0 C (-13.0 F)
1967	-24.4 C (-11.9 F)
1968	-24.4 C (-11.9 F)
1969	-20.6 C (-5.1 F)
1970	-23.3 C (-9.9 F)
1971	-26.7 C (-16.1 F)
1972	-27.8 C (-18.0 F)
1973	-21.7 C (-7.1 F)
1974	-27.2 C (-17.0 F)
1975	-23.9 C (-11.0 F)
1976	-20.0 C (-4.0 F)
1977	-20.0 C (-4.0 F)
1978	-23.3 C (-9.9 F)
1979	-23.9 C (-11.0 F)
1980	-20.6 C (-5.1 F)
1981	-24.4 C (-11.9 F)
1982	-26.1 C (-15.0 F)
1983	-29.4 C (-20.9 F)
1984	-28.3 C (-18.9 F)
1985	-26.1 C (-15.0 F)
1986	-22.8 C (-9.0 F)
1987	-23.9 C (-11.0 F)
1988	-24.4 C (-11.9 F)
1989	-31.1 C (-24.0 F)
1990	-31.7 C (-25.1 F)
1991	-20.0 C (-4.0 F)
1992	-20.6 C (-5.1 F)
1993	-22.8 C (-9.0 F)
1994	-19.4 C (-2.9 F)
1995	-21.7 C (-7.1 F)
1996	-26.1 C (-15.0 F)
1997	-23.3 C (-9.9 F)
1998	-25.6 C (-14.1 F)
1999	-15.6 C (3.9 F)
2000	-18.3 C (-0.9 F)
2001	-22.2 C (-8.0 F)
2002	-20.6 C (-5.1 F)
2003	-19.4 C (-2.9 F)
2004	-22.2 C (-8.0 F)
2005	-23.3 C (-9.9 F)
2006	-25.0 C (-13.0 F)
2007	-24.4 C (-11.9 F)
2008	-26.1 C (-15.0 F)
2009	-25.0 C (-13.0 F)
2010	-21.7 C (-7.1 F)
2011	-27.2 C (-17.0 F)
2012	-17.8 C (0.0 F)
2013	-23.3 C (-9.9 F)
2014	-25.6 C (-14.1 F)
2015	-23.3 C (-9.9 F)
2016	-26.1 C (-15.0 F)
2017	-24.4 C (-11.9 F)
2018	-19.4 C (-2.9 F)
2019	-20.6 C (-5.1 F)
2020	-18.3 C (-0.9 F)
2021	-23.3 C (-9.9 F)
2022	-26.1 C (-15.0 F)
2023	-22.2 C (-8.0 F)
2024	-25.0 C (-13.0 F)
2025	-22.8 C (-9.0 F)
2026	-17.8 C (0.0 F)

Wettest day (Rx1day)

The wettest day of the year at Denver-Stapleton, 1948 to 2026. The record is 98.6 mm (3.9 in) in 2013, marked on the chart; the median year is 37.1 mm (1.5 in).

Wettest day (Rx1day) at Denver-Stapleton by year
Year	Wettest day (Rx1day)
1948	61.0 mm (2.4 in)
1949	25.4 mm (1.0 in)
1950	52.3 mm (2.1 in)
1951	49.0 mm (1.9 in)
1952	38.1 mm (1.5 in)
1953	44.5 mm (1.8 in)
1954	29.2 mm (1.1 in)
1955	35.3 mm (1.4 in)
1956	36.1 mm (1.4 in)
1957	59.4 mm (2.3 in)
1958	47.2 mm (1.9 in)
1959	35.3 mm (1.4 in)
1960	40.1 mm (1.6 in)
1961	45.7 mm (1.8 in)
1962	23.4 mm (0.9 in)
1963	33.3 mm (1.3 in)
1964	33.8 mm (1.3 in)
1965	56.6 mm (2.2 in)
1966	16.3 mm (0.6 in)
1967	82.6 mm (3.3 in)
1968	33.3 mm (1.3 in)
1969	74.9 mm (2.9 in)
1970	80.3 mm (3.2 in)
1971	29.7 mm (1.2 in)
1972	77.2 mm (3.0 in)
1973	83.1 mm (3.3 in)
1974	45.5 mm (1.8 in)
1975	34.8 mm (1.4 in)
1976	43.4 mm (1.7 in)
1977	27.2 mm (1.1 in)
1978	28.2 mm (1.1 in)
1979	41.4 mm (1.6 in)
1980	32.8 mm (1.3 in)
1981	27.4 mm (1.1 in)
1982	50.8 mm (2.0 in)
1983	68.1 mm (2.7 in)
1984	27.2 mm (1.1 in)
1985	38.4 mm (1.5 in)
1986	24.6 mm (1.0 in)
1987	44.7 mm (1.8 in)
1988	42.9 mm (1.7 in)
1989	36.6 mm (1.4 in)
1990	34.0 mm (1.3 in)
1991	47.0 mm (1.9 in)
1992	50.3 mm (2.0 in)
1993	27.4 mm (1.1 in)
1994	20.8 mm (0.8 in)
1995	38.9 mm (1.5 in)
1996	23.9 mm (0.9 in)
1997	97.3 mm (3.8 in)
1998	41.4 mm (1.6 in)
1999	36.1 mm (1.4 in)
2000	45.2 mm (1.8 in)
2001	38.6 mm (1.5 in)
2002	33.3 mm (1.3 in)
2003	78.7 mm (3.1 in)
2004	96.8 mm (3.8 in)
2005	33.8 mm (1.3 in)
2006	36.3 mm (1.4 in)
2007	43.4 mm (1.7 in)
2008	37.1 mm (1.5 in)
2009	30.2 mm (1.2 in)
2010	27.9 mm (1.1 in)
2011	80.5 mm (3.2 in)
2012	39.4 mm (1.6 in)
2013	98.6 mm (3.9 in)
2014	26.4 mm (1.0 in)
2015	63.0 mm (2.5 in)
2016	26.2 mm (1.0 in)
2017	31.2 mm (1.2 in)
2018	24.6 mm (1.0 in)
2019	23.4 mm (0.9 in)
2020	27.9 mm (1.1 in)
2021	34.3 mm (1.4 in)
2022	37.3 mm (1.5 in)
2023	84.3 mm (3.3 in)
2024	26.7 mm (1.1 in)
2025	29.5 mm (1.2 in)
2026	16.3 mm (0.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Denver-Stapleton, 1948 to 2026. The record is 129.6 mm (5.1 in) in 2013, marked on the chart; the median year is 57.0 mm (2.2 in).

Wettest five days (Rx5day) at Denver-Stapleton by year
Year	Wettest five days (Rx5day)
1948	61.0 mm (2.4 in)
1949	62.5 mm (2.5 in)
1950	70.3 mm (2.8 in)
1951	87.9 mm (3.5 in)
1952	40.7 mm (1.6 in)
1953	49.3 mm (1.9 in)
1954	31.5 mm (1.2 in)
1955	64.0 mm (2.5 in)
1956	108.8 mm (4.3 in)
1957	87.4 mm (3.4 in)
1958	66.0 mm (2.6 in)
1959	47.5 mm (1.9 in)
1960	60.7 mm (2.4 in)
1961	59.7 mm (2.4 in)
1962	27.0 mm (1.1 in)
1963	62.8 mm (2.5 in)
1964	58.9 mm (2.3 in)
1965	103.4 mm (4.1 in)
1966	25.3 mm (1.0 in)
1967	91.5 mm (3.6 in)
1968	41.9 mm (1.6 in)
1969	122.5 mm (4.8 in)
1970	91.0 mm (3.6 in)
1971	42.4 mm (1.7 in)
1972	79.5 mm (3.1 in)
1973	90.8 mm (3.6 in)
1974	50.1 mm (2.0 in)
1975	43.4 mm (1.7 in)
1976	55.3 mm (2.2 in)
1977	43.0 mm (1.7 in)
1978	55.1 mm (2.2 in)
1979	66.9 mm (2.6 in)
1980	40.2 mm (1.6 in)
1981	34.2 mm (1.3 in)
1982	51.6 mm (2.0 in)
1983	78.1 mm (3.1 in)
1984	46.2 mm (1.8 in)
1985	56.7 mm (2.2 in)
1986	35.5 mm (1.4 in)
1987	73.2 mm (2.9 in)
1988	94.2 mm (3.7 in)
1989	59.4 mm (2.3 in)
1990	49.7 mm (2.0 in)
1991	70.6 mm (2.8 in)
1992	51.8 mm (2.0 in)
1993	37.5 mm (1.5 in)
1994	22.3 mm (0.9 in)
1995	57.0 mm (2.2 in)
1996	56.2 mm (2.2 in)
1997	101.4 mm (4.0 in)
1998	80.5 mm (3.2 in)
1999	61.2 mm (2.4 in)
2000	80.3 mm (3.2 in)
2001	69.7 mm (2.7 in)
2002	38.9 mm (1.5 in)
2003	115.8 mm (4.6 in)
2004	97.1 mm (3.8 in)
2005	54.6 mm (2.1 in)
2006	36.8 mm (1.4 in)
2007	48.8 mm (1.9 in)
2008	59.7 mm (2.4 in)
2009	59.9 mm (2.4 in)
2010	61.1 mm (2.4 in)
2011	93.0 mm (3.7 in)
2012	43.8 mm (1.7 in)
2013	129.6 mm (5.1 in)
2014	46.2 mm (1.8 in)
2015	83.3 mm (3.3 in)
2016	42.6 mm (1.7 in)
2017	53.0 mm (2.1 in)
2018	34.8 mm (1.4 in)
2019	31.2 mm (1.2 in)
2020	28.4 mm (1.1 in)
2021	61.4 mm (2.4 in)
2022	48.3 mm (1.9 in)
2023	124.7 mm (4.9 in)
2024	46.7 mm (1.8 in)
2025	48.8 mm (1.9 in)
2026	33.1 mm (1.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Denver-Stapleton, 1948 to 2026. The record is 71 days in 2021, marked on the chart; the median year is 30 days.

Longest dry spell (CDD) at Denver-Stapleton by year
Year	Longest dry spell (CDD)
1948	31 days
1949	41 days
1950	31 days
1951	18 days
1952	32 days
1953	34 days
1954	50 days
1955	31 days
1956	65 days
1957	29 days
1958	26 days
1959	27 days
1960	46 days
1961	26 days
1962	54 days
1963	61 days
1964	30 days
1965	38 days
1966	26 days
1967	22 days
1968	21 days
1969	24 days
1970	63 days
1971	24 days
1972	37 days
1973	34 days
1974	34 days
1975	22 days
1976	29 days
1977	33 days
1978	31 days
1979	25 days
1980	36 days
1981	25 days
1982	30 days
1983	31 days
1984	30 days
1985	22 days
1986	29 days
1987	25 days
1988	55 days
1989	25 days
1990	20 days
1991	30 days
1992	61 days
1993	24 days
1994	23 days
1995	27 days
1996	28 days
1997	20 days
1998	40 days
1999	33 days
2000	29 days
2001	23 days
2002	36 days
2003	52 days
2004	28 days
2005	27 days
2006	34 days
2007	29 days
2008	28 days
2009	29 days
2010	33 days
2011	30 days
2012	39 days
2013	30 days
2014	28 days
2015	24 days
2016	41 days
2017	39 days
2018	36 days
2019	22 days
2020	46 days
2021	71 days
2022	27 days
2023	42 days
2024	26 days
2025	27 days
2026	42 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

77 years with a frost

Across 77 years with a frost, the median last spring frost at Denver-Stapleton falls on 3 May and the median first autumn frost on 9 October, which leaves a median of 155 days between them.

In 1995 to 2025 the median growing season was 154 days. That is 6 days fewer than in 1948 to 1977.

Fitted over all years, the growing season changes by +0.1 days per decade at this station.

Frost dates and growing season at Denver-Stapleton
Measure	Median, all years	Earliest period (1948 to 1977)	Recent period (1995 to 2025)	Recent against earliest	Fitted trend
Last spring frost	3 May	3 May	9 May	6 days later	+0.3 days per decade
First autumn frost	9 October	7 October	12 October	5 days later	+0.4 days per decade
Growing days	155 days	160 days	154 days	6 days fewer	+0.1 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

78 years, 1948 to 2025

A day with at least 38.3 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 125.6 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Denver-Stapleton: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	38.3 mm (1.5 in)
5 years	54.6 mm (2.1 in)
10 years	67.8 mm (2.7 in)
25 years	87.7 mm (3.5 in)
50 years	105.3 mm (4.1 in)
100 years	125.6 mm (4.9 in)	Longer than the 78 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, 78 years of values from 1948 to 2025.

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: 98.6 mm (3.9 in) in 2013; 97.3 mm (3.8 in) in 1997; 96.8 mm (3.8 in) in 2004.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2011 to 2025 against 1961 to 1990

Over 2011 to 2025, Denver-Stapleton had a mean temperature of 10.9 C (51.6 F) and 372.3 mm (14.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Burlington (United States, 229 km away), Trinidad AP (United States, 282 km away) and Cheyenne Wells 2NE (United States, 240 km away).

Climate twins of Denver-Stapleton: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Burlington	United States	229 km (142 mi)	10.9 C (51.6 F)	400.0 mm (15.7 in)	0.86
Trinidad AP	United States	282 km (175 mi)	11.0 C (51.8 F)	342.3 mm (13.5 in)	0.98
Cheyenne Wells 2NE	United States	240 km (149 mi)	10.8 C (51.5 F)	388.9 mm (15.3 in)	1.04

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for Denver-Stapleton standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Denver-Stapleton 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).