Tres Piedras Weather Records (USC00299085)

Record envelope, standing records and threshold days for Tres Piedras (USC00299085), New Mexico, United States, with 112 years of record.

Key Facts for Tres Piedras

Tres Piedras (USC00299085) is a weather station in New Mexico, United States at 36.65 latitude and -105.97 longitude, 2,481 m (8,139 ft) above sea level.
The station reports from 1905 to 2016, 112 years of record.
1,464 records set at Tres Piedras still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Tres Piedras set a daily record snow depth of 2.5 cm (1.0 in) on 20 April 2016.

About the Station

Location: New Mexico, United States, 36.65 latitude, -105.97 longitude.
Elevation: 2,481 m (8,139 ft).
Period of record: 1905 to 2016, 112 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Tres Piedras. 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 Tres Piedras, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	16.1 C (61.0 F)	-37.2 C (-35.0 F)	n/a	n/a
Feb	19.4 C (66.9 F)	-37.2 C (-35.0 F)	n/a	n/a
Mar	21.7 C (71.1 F)	-30.6 C (-23.1 F)	n/a	n/a
Apr	26.7 C (80.1 F)	-20.0 C (-4.0 F)	n/a	n/a
May	30.6 C (87.1 F)	-11.1 C (12.0 F)	n/a	n/a
Jun	35.0 C (95.0 F)	-8.9 C (16.0 F)	n/a	n/a
Jul	33.9 C (93.0 F)	-3.9 C (25.0 F)	n/a	n/a
Aug	33.3 C (91.9 F)	-2.8 C (27.0 F)	n/a	n/a
Sep	31.7 C (89.1 F)	-9.4 C (15.1 F)	n/a	n/a
Oct	31.7 C (89.1 F)	-20.6 C (-5.1 F)	n/a	n/a
Nov	23.3 C (73.9 F)	-30.0 C (-22.0 F)	n/a	n/a
Dec	17.8 C (64.0 F)	-38.3 C (-36.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tres Piedras still stand. 1930 holds the most, with 51.

Standing records at Tres Piedras by the year they were set
Year set	Standing records
1905	11
1906	13
1907	17
1908	18
1909	13
1910	18
1911	10
1912	12
1913	16
1914	2
1915	16
1916	24
1917	21
1918	17
1919	26
1920	13
1921	17
1922	10
1923	9
1924	14
1925	13
1926	19
1927	14
1928	10
1929	18
1930	51
1931	16
1932	21
1933	10
1934	10
1935	18
1936	10
1937	10
1938	14
1939	19
1940	9
1941	3
1942	7
1943	12
1944	12
1945	10
1946	7
1947	9
1948	23
1949	25
1951	13
1952	11
1953	18
1954	31
1955	26
1956	21
1957	24
1958	15
1959	10
1960	8
1961	7
1962	16
1963	15
1964	9
1965	19
1966	5
1967	9
1968	9
1969	14
1970	11
1971	26
1972	19
1973	9
1974	10
1975	9
1976	13
1977	5
1978	9
1979	13
1980	31
1981	38
1982	29
1983	8
1984	19
1985	12
1986	14
1987	7
1988	8
1989	18
1990	15
1991	8
1992	23
1993	5
1994	8
1995	7
1996	35
1997	3
1998	10
1999	3
2000	16
2001	2
2002	8
2003	5
2004	1
2005	10
2006	3
2007	17
2008	9
2009	11
2010	5
2011	5

All-Time Record Progression

13 new records

13 all-time records were set at Tres Piedras between 5 August 1940 and 26 December 2008. Each dot is a new record.

When Tres Piedras set new all-time records
Date	Kind	Detail
1940-08-05	Record high minimum temperature	Record high minimum temperature 16.1 C (61.0 F)
1949-09-04	Record high minimum temperature	Record high minimum temperature 16.7 C (62.1 F)
1963-01-12	Record low maximum temperature	Record low maximum temperature -15.6 C (3.9 F)
1971-01-04	Record low maximum temperature	Record low maximum temperature -18.3 C (-0.9 F)
1971-06-07	Record high minimum temperature	Record high minimum temperature 17.8 C (64.0 F)
1971-06-28	Record high minimum temperature	Record high minimum temperature 19.4 C (66.9 F)
1990-12-23	Record low minimum temperature	Record low minimum temperature -38.3 C (-36.9 F)
1991-08-06	Record daily precipitation	Record daily precipitation 73.7 mm (2.9 in)
1998-06-28	Record high maximum temperature	Record high maximum temperature 35.0 C (95.0 F)
2008-12-23	Record snow depth	Record snow depth 76.2 cm (30.0 in)
2008-12-24	Record snow depth	Record snow depth 78.7 cm (31.0 in)
2008-12-25	Record snow depth	Record snow depth 88.9 cm (35.0 in)
2008-12-26	Record snow depth	Record snow depth 91.4 cm (36.0 in)

Wettest Day of Each Month

Aug: 73.7 mm (2.9 in)

The wettest day on record for each calendar month at Tres Piedras. The most was 73.7 mm (2.9 in) on 6 August 1991.

Record daily precipitation for each month at Tres Piedras
Month	Record daily precipitation (mm)	Date
Jan	30.5 mm (1.2 in)	14 January 1997
Feb	26.4 mm (1.0 in)	15 February 1927
Mar	37.6 mm (1.5 in)	30 March 1916
Apr	50.0 mm (2.0 in)	27 April 1926
May	38.1 mm (1.5 in)	17 May 1935
Jun	43.2 mm (1.7 in)	26 June 1920
Jul	51.1 mm (2.0 in)	27 July 1941
Aug	73.7 mm (2.9 in)	6 August 1991
Sep	51.3 mm (2.0 in)	23 September 1934
Oct	50.0 mm (2.0 in)	11 October 2008
Nov	41.1 mm (1.6 in)	21 November 1947
Dec	56.1 mm (2.2 in)	31 December 1940

Period of Record Coverage

1905 to 2011

106 years of record at Tres Piedras, 1905 to 2011. 51 years have data for under 90 percent of days and are left out of rankings: 1905, 1911, 1915, 1917, 1933, 1946, 1949, 1951 and others.

Days with data per year at Tres Piedras
Year	Days with data	Share of year	Complete
1905	257	70%	No
1906	335	92%	Yes
1907	364	100%	Yes
1908	342	93%	Yes
1909	361	99%	Yes
1910	364	100%	Yes
1911	113	31%	No
1912	336	92%	Yes
1913	360	99%	Yes
1914	346	95%	Yes
1915	191	52%	No
1916	365	100%	Yes
1917	231	63%	No
1918	365	100%	Yes
1919	363	99%	Yes
1920	364	99%	Yes
1921	365	100%	Yes
1922	363	99%	Yes
1923	365	100%	Yes
1924	362	99%	Yes
1925	364	100%	Yes
1926	358	98%	Yes
1927	360	99%	Yes
1928	364	99%	Yes
1929	364	100%	Yes
1930	362	99%	Yes
1931	351	96%	Yes
1932	366	100%	Yes
1933	310	85%	No
1934	357	98%	Yes
1935	364	100%	Yes
1936	361	99%	Yes
1937	361	99%	Yes
1938	355	97%	Yes
1939	361	99%	Yes
1940	360	98%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	361	99%	Yes
1944	364	99%	Yes
1945	362	99%	Yes
1946	272	75%	No
1947	330	90%	Yes
1948	356	97%	Yes
1949	258	71%	No
1951	145	40%	No
1952	366	100%	Yes
1953	361	99%	Yes
1954	349	96%	Yes
1955	357	98%	Yes
1956	363	99%	Yes
1957	365	100%	Yes
1958	328	90%	No
1959	325	89%	No
1960	318	87%	No
1961	338	93%	Yes
1962	301	82%	No
1963	335	92%	Yes
1964	312	85%	No
1965	252	69%	No
1966	228	62%	No
1967	229	63%	No
1968	242	66%	No
1969	226	62%	No
1970	270	74%	No
1971	298	82%	No
1972	273	75%	No
1973	337	92%	Yes
1974	332	91%	Yes
1975	270	74%	No
1976	240	66%	No
1977	185	51%	No
1978	297	81%	No
1979	347	95%	Yes
1980	359	98%	Yes
1981	345	95%	Yes
1982	304	83%	No
1983	193	53%	No
1984	311	85%	No
1985	288	79%	No
1986	301	82%	No
1987	302	83%	No
1988	314	86%	No
1989	342	94%	Yes
1990	345	95%	Yes
1991	339	93%	Yes
1992	330	90%	Yes
1993	319	87%	No
1994	293	80%	No
1995	260	71%	No
1996	285	78%	No
1997	277	76%	No
1998	268	73%	No
1999	245	67%	No
2000	287	78%	No
2001	207	57%	No
2002	268	73%	No
2003	281	77%	No
2004	234	64%	No
2005	306	84%	No
2006	267	73%	No
2007	222	61%	No
2008	301	82%	No
2009	289	79%	No
2010	271	74%	No
2011	59	16%	No

Latest Records

Latest records at Tres Piedras
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 April 2016	Tres Piedras, US	daily snow depth	2.5 cm (1.0 in)	2.5 cm (1.0 in)	101 years	20 of 100 (Routine)
19 April 2016	Tres Piedras, US	daily snow depth	12.7 cm (5.0 in)	12.7 cm (5.0 in)	101 years	68 of 100 (Major)
19 April 2016	Tres Piedras, US	daily snowfall	24.1 cm (9.5 in)	13.9 cm (5.5 in)	72 years	53 of 100 (Notable)
9 February 2011	Tres Piedras, US	daily low max	-10.6 C (12.9 F)	2.8 C (5.0 F)	77 years	39 of 100 (Notable)
3 February 2011	Tres Piedras, US	daily low min	-31.1 C (-24.0 F)	1.7 C (3.1 F)	72 years	33 of 100 (Routine)
2 February 2011	Tres Piedras, US	monthly low max	-17.8 C (0.0 F)	6.1 C (11.0 F)	95 years	61 of 100 (Major)
2 February 2011	Tres Piedras, US	daily low min	-32.2 C (-26.0 F)	3.9 C (7.0 F)	95 years	44 of 100 (Notable)
1 January 2011	Tres Piedras, US	daily low max	-11.7 C (10.9 F)	1.7 C (3.1 F)	40 years	25 of 100 (Routine)
29 September 2010	Tres Piedras, US	daily high max (Tie)	26.7 C (80.1 F)	tie	76 years	8 of 100 (Routine)
9 June 2010	Tres Piedras, US	daily high max	30.0 C (86.0 F)	0.6 C (1.1 F)	104 years	41 of 100 (Notable)
6 June 2010	Tres Piedras, US	daily high min	11.1 C (52.0 F)	1.1 C (2.0 F)	104 years	43 of 100 (Notable)
6 June 2010	Tres Piedras, US	daily high max	31.1 C (88.0 F)	2.2 C (4.0 F)	32 years	24 of 100 (Routine)
5 June 2010	Tres Piedras, US	daily high max (Tie)	30.0 C (86.0 F)	tie	4 years	2 of 100 (Routine)
22 May 2010	Tres Piedras, US	daily high min	9.4 C (48.9 F)	0.5 C (0.9 F)	41 years	23 of 100 (Routine)
2 May 2010	Tres Piedras, US	daily low max	4.4 C (39.9 F)	1.7 C (3.1 F)	56 years	30 of 100 (Routine)
22 January 2010	Tres Piedras, US	daily snowfall	17.8 cm (7.0 in)	10.2 cm (4.0 in)	100 years	54 of 100 (Notable)
29 October 2009	Tres Piedras, US	daily low max	-3.3 C (26.1 F)	3.9 C (7.0 F)	80 years	41 of 100 (Notable)
29 October 2009	Tres Piedras, US	daily low min	-17.8 C (0.0 F)	1.1 C (2.0 F)	92 years	39 of 100 (Notable)
29 October 2009	Tres Piedras, US	daily snow depth	5.1 cm (2.0 in)	2.6 cm (1.0 in)	79 years	20 of 100 (Routine)
28 October 2009	Tres Piedras, US	daily snow depth	2.5 cm (1.0 in)	2.5 cm (1.0 in)	60 years	20 of 100 (Routine)

Climate Trend

48 complete years, 1907 to 2005

One stripe for each of 48 complete years at Tres Piedras, 1907 to 2005. Blue stripes are years cooler than the station's own mean of 5.6 C (42.1 F); red stripes are warmer. The coolest year was 1930, at 4.0 C (39.3 F), and the warmest was 1934, at 7.5 C (45.5 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Tres Piedras as warming stripes, 1907 to 2005
Year	Annual mean temperature	Difference from the station mean
1907	6.4 C	+0.79 C
1908	6.0 C	+0.36 C
1909	5.6 C	+0.05 C
1910	7.1 C	+1.52 C
1912	5.1 C	-0.47 C
1913	5.3 C	-0.34 C
1916	5.3 C	-0.32 C
1918	5.4 C	-0.17 C
1919	4.5 C	-1.07 C
1920	5.2 C	-0.38 C
1921	6.1 C	+0.54 C
1922	5.6 C	+0.05 C
1923	5.5 C	-0.13 C
1924	5.1 C	-0.46 C
1925	5.3 C	-0.27 C
1926	4.5 C	-1.11 C
1927	5.2 C	-0.36 C
1928	5.2 C	-0.35 C
1929	4.8 C	-0.75 C
1930	4.0 C	-1.55 C
1931	5.6 C	-0.02 C
1932	5.0 C	-0.59 C
1934	7.5 C	+1.90 C
1935	5.9 C	+0.30 C
1936	6.2 C	+0.60 C
1937	5.6 C	-0.01 C
1938	5.6 C	-0.03 C
1939	5.8 C	+0.23 C
1940	6.0 C	+0.37 C
1941	4.9 C	-0.68 C
1942	5.4 C	-0.17 C
1943	6.2 C	+0.61 C
1944	5.2 C	-0.41 C
1945	5.9 C	+0.34 C
1948	6.4 C	+0.83 C
1952	4.8 C	-0.81 C
1955	5.0 C	-0.64 C
1956	6.4 C	+0.80 C
1960	5.8 C	+0.25 C
1961	5.8 C	+0.18 C
1963	6.8 C	+1.16 C
1964	4.6 C	-1.03 C
1979	5.1 C	-0.45 C
1980	6.5 C	+0.89 C
1989	5.9 C	+0.31 C
1990	5.3 C	-0.30 C
1991	5.2 C	-0.44 C
2005	7.0 C	+1.36 C

The fitted trend in annual mean temperature here over 1907 to 2005 is 0.04 C (-0.04 to 0.13) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.2) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Tres Piedras
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.04 C (-0.04 to 0.13) per decade	0.1 F (-0.1 to 0.2) per decade	1907 to 2005	48	Not clearly different from zero
Mean daily maximum	0.11 C (-0.03 to 0.24) per decade	0.2 F (-0.1 to 0.4) per decade	1907 to 2005	48	Not clearly different from zero
Mean daily minimum	-0.02 C (-0.11 to 0.07) per decade	-0.04 F (-0.20 to 0.12) per decade	1907 to 2005	48	Not clearly different from zero

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

1905 to 2016

Yearly extremes at Tres Piedras: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.0 C (95.0 F)	1998	31.7 C (89.1 F)	106
Coldest night (TNn)	-38.3 C (-36.9 F)	1990	-27.2 C (-17.0 F)	106
Wettest day (Rx1day)	73.7 mm (2.9 in)	1991	29.9 mm (1.2 in)	108
Wettest five days (Rx5day)	133.1 mm (5.2 in)	1991	44.4 mm (1.7 in)	108
Longest dry spell (CDD)	109 days	2010	41 days	108

Hottest day (TXx)

The hottest day of the year at Tres Piedras, 1905 to 2016. The record is 35.0 C (95.0 F) in 1998, marked on the chart; the median year is 31.7 C (89.1 F).

Hottest day (TXx) at Tres Piedras by year
Year	Hottest day (TXx)
1905	33.3 C (91.9 F)
1906	30.6 C (87.1 F)
1907	30.0 C (86.0 F)
1908	33.3 C (91.9 F)
1909	32.2 C (90.0 F)
1910	33.9 C (93.0 F)
1911	13.9 C (57.0 F)
1912	29.4 C (84.9 F)
1913	32.2 C (90.0 F)
1914	30.6 C (87.1 F)
1915	23.9 C (75.0 F)
1916	31.7 C (89.1 F)
1917	33.3 C (91.9 F)
1918	31.7 C (89.1 F)
1919	31.7 C (89.1 F)
1920	31.7 C (89.1 F)
1921	28.9 C (84.0 F)
1922	32.2 C (90.0 F)
1923	31.1 C (88.0 F)
1924	30.0 C (86.0 F)
1925	31.1 C (88.0 F)
1926	31.1 C (88.0 F)
1927	28.3 C (82.9 F)
1928	30.6 C (87.1 F)
1929	30.0 C (86.0 F)
1930	28.3 C (82.9 F)
1931	31.7 C (89.1 F)
1932	30.0 C (86.0 F)
1933	31.1 C (88.0 F)
1934	31.7 C (89.1 F)
1935	31.7 C (89.1 F)
1936	32.2 C (90.0 F)
1937	31.7 C (89.1 F)
1938	31.7 C (89.1 F)
1939	32.2 C (90.0 F)
1940	33.3 C (91.9 F)
1941	28.3 C (82.9 F)
1942	31.7 C (89.1 F)
1943	31.1 C (88.0 F)
1944	32.2 C (90.0 F)
1945	31.1 C (88.0 F)
1946	31.1 C (88.0 F)
1947	32.2 C (90.0 F)
1948	32.8 C (91.0 F)
1949	29.4 C (84.9 F)
1950	n/a
1951	32.8 C (91.0 F)
1952	31.1 C (88.0 F)
1953	31.1 C (88.0 F)
1954	32.2 C (90.0 F)
1955	31.1 C (88.0 F)
1956	31.7 C (89.1 F)
1957	32.8 C (91.0 F)
1958	32.2 C (90.0 F)
1959	30.0 C (86.0 F)
1960	31.1 C (88.0 F)
1961	30.6 C (87.1 F)
1962	32.8 C (91.0 F)
1963	32.8 C (91.0 F)
1964	31.7 C (89.1 F)
1965	29.4 C (84.9 F)
1966	31.1 C (88.0 F)
1967	30.6 C (87.1 F)
1968	30.6 C (87.1 F)
1969	33.3 C (91.9 F)
1970	33.3 C (91.9 F)
1971	33.9 C (93.0 F)
1972	32.8 C (91.0 F)
1973	31.7 C (89.1 F)
1974	31.1 C (88.0 F)
1975	31.1 C (88.0 F)
1976	31.7 C (89.1 F)
1977	32.8 C (91.0 F)
1978	31.1 C (88.0 F)
1979	31.7 C (89.1 F)
1980	33.3 C (91.9 F)
1981	32.2 C (90.0 F)
1982	30.6 C (87.1 F)
1983	31.1 C (88.0 F)
1984	30.0 C (86.0 F)
1985	32.2 C (90.0 F)
1986	28.9 C (84.0 F)
1987	28.9 C (84.0 F)
1988	29.4 C (84.9 F)
1989	31.7 C (89.1 F)
1990	33.3 C (91.9 F)
1991	30.6 C (87.1 F)
1992	32.8 C (91.0 F)
1993	32.2 C (90.0 F)
1994	32.2 C (90.0 F)
1995	32.8 C (91.0 F)
1996	31.7 C (89.1 F)
1997	30.6 C (87.1 F)
1998	35.0 C (95.0 F)
1999	31.1 C (88.0 F)
2000	30.6 C (87.1 F)
2001	31.1 C (88.0 F)
2002	31.7 C (89.1 F)
2003	33.3 C (91.9 F)
2004	31.1 C (88.0 F)
2005	32.2 C (90.0 F)
2006	32.8 C (91.0 F)
2007	31.1 C (88.0 F)
2008	30.6 C (87.1 F)
2009	30.6 C (87.1 F)
2010	31.1 C (88.0 F)
2011	11.1 C (52.0 F)
2016	n/a

Coldest night (TNn)

The coldest night of the year at Tres Piedras, 1905 to 2016. The record is -38.3 C (-36.9 F) in 1990, marked on the chart; the median year is -27.2 C (-17.0 F).

Coldest night (TNn) at Tres Piedras by year
Year	Coldest night (TNn)
1905	-25.0 C (-13.0 F)
1906	-28.3 C (-18.9 F)
1907	-27.2 C (-17.0 F)
1908	-24.4 C (-11.9 F)
1909	-30.6 C (-23.1 F)
1910	-32.8 C (-27.0 F)
1911	-29.4 C (-20.9 F)
1912	-27.2 C (-17.0 F)
1913	-31.7 C (-25.1 F)
1914	-23.9 C (-11.0 F)
1915	-26.1 C (-15.0 F)
1916	-28.9 C (-20.0 F)
1917	-23.3 C (-9.9 F)
1918	-29.4 C (-20.9 F)
1919	-35.6 C (-32.1 F)
1920	-27.2 C (-17.0 F)
1921	-26.1 C (-15.0 F)
1922	-27.8 C (-18.0 F)
1923	-22.2 C (-8.0 F)
1924	-31.7 C (-25.1 F)
1925	-31.1 C (-24.0 F)
1926	-25.6 C (-14.1 F)
1927	-28.9 C (-20.0 F)
1928	-25.0 C (-13.0 F)
1929	-27.2 C (-17.0 F)
1930	-28.3 C (-18.9 F)
1931	-27.8 C (-18.0 F)
1932	-26.1 C (-15.0 F)
1933	-37.2 C (-35.0 F)
1934	-22.2 C (-8.0 F)
1935	-28.9 C (-20.0 F)
1936	-23.3 C (-9.9 F)
1937	-28.3 C (-18.9 F)
1938	-27.8 C (-18.0 F)
1939	-29.4 C (-20.9 F)
1940	-28.3 C (-18.9 F)
1941	-25.6 C (-14.1 F)
1942	-29.4 C (-20.9 F)
1943	-25.6 C (-14.1 F)
1944	-24.4 C (-11.9 F)
1945	-30.0 C (-22.0 F)
1946	-25.6 C (-14.1 F)
1947	-16.7 C (1.9 F)
1948	-17.8 C (0.0 F)
1949	-17.8 C (0.0 F)
1950	n/a
1951	-29.4 C (-20.9 F)
1952	-26.1 C (-15.0 F)
1953	-29.4 C (-20.9 F)
1954	-26.7 C (-16.1 F)
1955	-32.2 C (-26.0 F)
1956	-22.2 C (-8.0 F)
1957	-25.6 C (-14.1 F)
1958	-31.7 C (-25.1 F)
1959	-25.0 C (-13.0 F)
1960	-25.6 C (-14.1 F)
1961	-28.9 C (-20.0 F)
1962	-28.9 C (-20.0 F)
1963	-34.4 C (-29.9 F)
1964	-28.3 C (-18.9 F)
1965	-32.2 C (-26.0 F)
1966	-28.9 C (-20.0 F)
1967	-28.3 C (-18.9 F)
1968	-29.4 C (-20.9 F)
1969	-26.1 C (-15.0 F)
1970	-30.0 C (-22.0 F)
1971	-37.2 C (-35.0 F)
1972	-30.6 C (-23.1 F)
1973	-23.3 C (-9.9 F)
1974	-32.8 C (-27.0 F)
1975	-29.4 C (-20.9 F)
1976	-33.9 C (-29.0 F)
1977	-26.7 C (-16.1 F)
1978	-37.2 C (-35.0 F)
1979	-35.6 C (-32.1 F)
1980	-24.4 C (-11.9 F)
1981	-26.1 C (-15.0 F)
1982	-28.9 C (-20.0 F)
1983	-25.6 C (-14.1 F)
1984	-29.4 C (-20.9 F)
1985	-28.9 C (-20.0 F)
1986	-26.1 C (-15.0 F)
1987	-26.1 C (-15.0 F)
1988	-25.0 C (-13.0 F)
1989	-30.0 C (-22.0 F)
1990	-38.3 C (-36.9 F)
1991	-27.8 C (-18.0 F)
1992	-25.6 C (-14.1 F)
1993	-24.4 C (-11.9 F)
1994	-25.6 C (-14.1 F)
1995	-21.7 C (-7.1 F)
1996	-25.0 C (-13.0 F)
1997	-23.3 C (-9.9 F)
1998	-21.7 C (-7.1 F)
1999	-21.1 C (-6.0 F)
2000	-21.1 C (-6.0 F)
2001	-22.8 C (-9.0 F)
2002	-26.1 C (-15.0 F)
2003	-23.3 C (-9.9 F)
2004	-23.9 C (-11.0 F)
2005	-24.4 C (-11.9 F)
2006	-23.3 C (-9.9 F)
2007	-26.7 C (-16.1 F)
2008	-28.3 C (-18.9 F)
2009	-18.9 C (-2.0 F)
2010	-22.2 C (-8.0 F)
2011	-32.2 C (-26.0 F)
2016	n/a

Wettest day (Rx1day)

The wettest day of the year at Tres Piedras, 1905 to 2016. The record is 73.7 mm (2.9 in) in 1991, marked on the chart; the median year is 29.9 mm (1.2 in).

Wettest day (Rx1day) at Tres Piedras by year
Year	Wettest day (Rx1day)
1905	27.9 mm (1.1 in)
1906	27.9 mm (1.1 in)
1907	19.1 mm (0.8 in)
1908	30.5 mm (1.2 in)
1909	22.9 mm (0.9 in)
1910	27.9 mm (1.1 in)
1911	19.1 mm (0.8 in)
1912	16.3 mm (0.6 in)
1913	23.4 mm (0.9 in)
1914	27.7 mm (1.1 in)
1915	22.9 mm (0.9 in)
1916	37.6 mm (1.5 in)
1917	9.4 mm (0.37 in)
1918	33.8 mm (1.3 in)
1919	27.9 mm (1.1 in)
1920	43.2 mm (1.7 in)
1921	31.2 mm (1.2 in)
1922	20.6 mm (0.8 in)
1923	36.1 mm (1.4 in)
1924	33.0 mm (1.3 in)
1925	24.1 mm (0.9 in)
1926	50.0 mm (2.0 in)
1927	35.6 mm (1.4 in)
1928	23.4 mm (0.9 in)
1929	32.5 mm (1.3 in)
1930	33.0 mm (1.3 in)
1931	39.4 mm (1.6 in)
1932	41.9 mm (1.6 in)
1933	16.5 mm (0.6 in)
1934	51.3 mm (2.0 in)
1935	38.1 mm (1.5 in)
1936	70.9 mm (2.8 in)
1937	30.5 mm (1.2 in)
1938	38.6 mm (1.5 in)
1939	27.7 mm (1.1 in)
1940	56.1 mm (2.2 in)
1941	51.1 mm (2.0 in)
1942	30.5 mm (1.2 in)
1943	40.6 mm (1.6 in)
1944	19.3 mm (0.8 in)
1945	19.3 mm (0.8 in)
1946	20.3 mm (0.8 in)
1947	41.1 mm (1.6 in)
1948	34.3 mm (1.4 in)
1949	28.4 mm (1.1 in)
1950	30.5 mm (1.2 in)
1951	53.3 mm (2.1 in)
1952	30.0 mm (1.2 in)
1953	19.3 mm (0.8 in)
1954	18.3 mm (0.7 in)
1955	41.9 mm (1.6 in)
1956	20.3 mm (0.8 in)
1957	49.0 mm (1.9 in)
1958	49.3 mm (1.9 in)
1959	24.6 mm (1.0 in)
1960	45.0 mm (1.8 in)
1961	19.1 mm (0.8 in)
1962	21.3 mm (0.8 in)
1963	18.8 mm (0.7 in)
1964	30.2 mm (1.2 in)
1965	23.9 mm (0.9 in)
1966	25.1 mm (1.0 in)
1967	30.0 mm (1.2 in)
1968	21.8 mm (0.9 in)
1969	29.7 mm (1.2 in)
1970	20.3 mm (0.8 in)
1971	44.5 mm (1.8 in)
1972	25.4 mm (1.0 in)
1973	19.8 mm (0.8 in)
1974	39.4 mm (1.6 in)
1975	30.5 mm (1.2 in)
1976	23.1 mm (0.9 in)
1977	17.5 mm (0.7 in)
1978	38.6 mm (1.5 in)
1979	27.9 mm (1.1 in)
1980	21.8 mm (0.9 in)
1981	30.7 mm (1.2 in)
1982	44.5 mm (1.8 in)
1983	50.8 mm (2.0 in)
1984	28.2 mm (1.1 in)
1985	22.9 mm (0.9 in)
1986	33.5 mm (1.3 in)
1987	30.5 mm (1.2 in)
1988	22.9 mm (0.9 in)
1989	33.5 mm (1.3 in)
1990	38.1 mm (1.5 in)
1991	73.7 mm (2.9 in)
1992	27.4 mm (1.1 in)
1993	38.9 mm (1.5 in)
1994	38.9 mm (1.5 in)
1995	45.7 mm (1.8 in)
1996	50.8 mm (2.0 in)
1997	31.8 mm (1.3 in)
1998	39.4 mm (1.6 in)
1999	25.4 mm (1.0 in)
2000	23.4 mm (0.9 in)
2001	21.6 mm (0.9 in)
2002	47.5 mm (1.9 in)
2003	34.0 mm (1.3 in)
2004	29.7 mm (1.2 in)
2005	23.9 mm (0.9 in)
2006	24.6 mm (1.0 in)
2007	26.7 mm (1.1 in)
2008	50.0 mm (2.0 in)
2009	20.3 mm (0.8 in)
2010	14.2 mm (0.6 in)
2011	1.8 mm (0.07 in)
2016	4.6 mm (0.18 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tres Piedras, 1905 to 2016. The record is 133.1 mm (5.2 in) in 1991, marked on the chart; the median year is 44.4 mm (1.7 in).

Wettest five days (Rx5day) at Tres Piedras by year
Year	Wettest five days (Rx5day)
1905	36.8 mm (1.4 in)
1906	65.9 mm (2.6 in)
1907	39.4 mm (1.6 in)
1908	43.2 mm (1.7 in)
1909	28.0 mm (1.1 in)
1910	50.8 mm (2.0 in)
1911	32.9 mm (1.3 in)
1912	25.7 mm (1.0 in)
1913	51.3 mm (2.0 in)
1914	47.1 mm (1.9 in)
1915	34.4 mm (1.4 in)
1916	41.7 mm (1.6 in)
1917	17.3 mm (0.7 in)
1918	64.6 mm (2.5 in)
1919	67.0 mm (2.6 in)
1920	56.0 mm (2.2 in)
1921	74.2 mm (2.9 in)
1922	28.0 mm (1.1 in)
1923	51.9 mm (2.0 in)
1924	44.9 mm (1.8 in)
1925	32.5 mm (1.3 in)
1926	51.0 mm (2.0 in)
1927	56.7 mm (2.2 in)
1928	33.0 mm (1.3 in)
1929	57.6 mm (2.3 in)
1930	69.6 mm (2.7 in)
1931	53.9 mm (2.1 in)
1932	50.0 mm (2.0 in)
1933	27.1 mm (1.1 in)
1934	61.4 mm (2.4 in)
1935	103.6 mm (4.1 in)
1936	89.5 mm (3.5 in)
1937	60.0 mm (2.4 in)
1938	53.3 mm (2.1 in)
1939	39.1 mm (1.5 in)
1940	50.3 mm (2.0 in)
1941	61.7 mm (2.4 in)
1942	50.8 mm (2.0 in)
1943	50.3 mm (2.0 in)
1944	46.7 mm (1.8 in)
1945	39.7 mm (1.6 in)
1946	28.2 mm (1.1 in)
1947	41.4 mm (1.6 in)
1948	34.3 mm (1.4 in)
1949	28.4 mm (1.1 in)
1950	30.5 mm (1.2 in)
1951	82.0 mm (3.2 in)
1952	51.1 mm (2.0 in)
1953	20.3 mm (0.8 in)
1954	32.2 mm (1.3 in)
1955	88.9 mm (3.5 in)
1956	35.0 mm (1.4 in)
1957	57.6 mm (2.3 in)
1958	56.7 mm (2.2 in)
1959	54.6 mm (2.1 in)
1960	52.6 mm (2.1 in)
1961	27.7 mm (1.1 in)
1962	44.7 mm (1.8 in)
1963	23.9 mm (0.9 in)
1964	35.2 mm (1.4 in)
1965	43.2 mm (1.7 in)
1966	26.9 mm (1.1 in)
1967	75.5 mm (3.0 in)
1968	57.8 mm (2.3 in)
1969	34.3 mm (1.4 in)
1970	42.2 mm (1.7 in)
1971	74.0 mm (2.9 in)
1972	37.6 mm (1.5 in)
1973	25.1 mm (1.0 in)
1974	42.2 mm (1.7 in)
1975	46.7 mm (1.8 in)
1976	29.6 mm (1.2 in)
1977	40.8 mm (1.6 in)
1978	40.7 mm (1.6 in)
1979	32.0 mm (1.3 in)
1980	28.4 mm (1.1 in)
1981	43.3 mm (1.7 in)
1982	64.2 mm (2.5 in)
1983	54.3 mm (2.1 in)
1984	35.0 mm (1.4 in)
1985	35.6 mm (1.4 in)
1986	51.8 mm (2.0 in)
1987	38.1 mm (1.5 in)
1988	46.2 mm (1.8 in)
1989	52.1 mm (2.1 in)
1990	55.3 mm (2.2 in)
1991	133.1 mm (5.2 in)
1992	43.9 mm (1.7 in)
1993	44.0 mm (1.7 in)
1994	75.8 mm (3.0 in)
1995	60.9 mm (2.4 in)
1996	82.6 mm (3.3 in)
1997	34.8 mm (1.4 in)
1998	51.1 mm (2.0 in)
1999	30.5 mm (1.2 in)
2000	38.6 mm (1.5 in)
2001	34.8 mm (1.4 in)
2002	71.6 mm (2.8 in)
2003	38.1 mm (1.5 in)
2004	49.5 mm (1.9 in)
2005	43.2 mm (1.7 in)
2006	46.2 mm (1.8 in)
2007	65.2 mm (2.6 in)
2008	50.3 mm (2.0 in)
2009	31.2 mm (1.2 in)
2010	26.9 mm (1.1 in)
2011	3.9 mm (0.15 in)
2016	0.0 mm (0.00 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tres Piedras, 1905 to 2016. The record is 109 days in 2010, marked on the chart; the median year is 41 days.

Longest dry spell (CDD) at Tres Piedras by year
Year	Longest dry spell (CDD)
1905	29 days
1906	35 days
1907	23 days
1908	33 days
1909	39 days
1910	30 days
1911	13 days
1912	74 days
1913	34 days
1914	47 days
1915	37 days
1916	67 days
1917	52 days
1918	28 days
1919	23 days
1920	35 days
1921	53 days
1922	36 days
1923	25 days
1924	42 days
1925	32 days
1926	35 days
1927	31 days
1928	47 days
1929	53 days
1930	42 days
1931	30 days
1932	46 days
1933	48 days
1934	30 days
1935	36 days
1936	25 days
1937	26 days
1938	33 days
1939	40 days
1940	29 days
1941	24 days
1942	54 days
1943	30 days
1944	22 days
1945	55 days
1946	37 days
1947	23 days
1948	51 days
1949	59 days
1950	91 days
1951	52 days
1952	42 days
1953	59 days
1954	66 days
1955	48 days
1956	76 days
1957	39 days
1958	41 days
1959	27 days
1960	25 days
1961	57 days
1962	49 days
1963	27 days
1964	47 days
1965	35 days
1966	45 days
1967	66 days
1968	56 days
1969	29 days
1970	29 days
1971	50 days
1972	46 days
1973	52 days
1974	42 days
1975	52 days
1976	36 days
1977	46 days
1978	53 days
1979	37 days
1980	67 days
1981	59 days
1982	24 days
1983	21 days
1984	45 days
1985	34 days
1986	69 days
1987	45 days
1988	57 days
1989	85 days
1990	37 days
1991	48 days
1992	37 days
1993	27 days
1994	30 days
1995	41 days
1996	91 days
1997	20 days
1998	51 days
1999	46 days
2000	32 days
2001	33 days
2002	97 days
2003	52 days
2004	29 days
2005	72 days
2006	43 days
2007	51 days
2008	37 days
2009	29 days
2010	109 days
2011	31 days
2016	5 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

48 years with a frost

Across 48 years with a frost, the median last spring frost at Tres Piedras falls on 8 June and the median first autumn frost on 15 September, which leaves a median of 97 days between them.

Fitted over all years, the growing season changes by +0.8 days per decade at this station.

Frost dates and growing season at Tres Piedras
Measure	Median, all years	Earliest period	Recent period (1929 to 2005)	Recent against earliest	Fitted trend
Last spring frost	8 June	n/a	8 June	n/a	-0.2 days per decade
First autumn frost	15 September	n/a	15 September	n/a	+0.6 days per decade
Growing days	97 days	n/a	98 days	n/a	+0.8 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, 1906 to 2008

A day with at least 30.1 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 75.0 mm (3.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Tres Piedras: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	30.1 mm (1.2 in)
5 years	40.6 mm (1.6 in)
10 years	48.1 mm (1.9 in)
25 years	58.4 mm (2.3 in)
50 years	66.5 mm (2.6 in)
100 years	75.0 mm (3.0 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 1906 to 2008.

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: 73.7 mm (2.9 in) in 1991; 70.9 mm (2.8 in) in 1936; 56.1 mm (2.2 in) in 1940.

Station Changes

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

Download the Data

Data for Tres Piedras standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tres Piedras 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).