Tumacacori Nm Weather Records (USC00028865)

Record envelope, standing records and threshold days for Tumacacori Nm (USC00028865), Arizona, United States, with 81 years of record.

Key Facts for Tumacacori Nm

Tumacacori Nm (USC00028865) is a weather station in Arizona, United States at 31.57 latitude and -111.05 longitude, 996 m (3,267 ft) above sea level.
The station reports from 1946 to 2026, 81 years of record.
1,464 records set at Tumacacori Nm still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Tumacacori Nm set a daily record high minimum temperature of 22.8 C (73.0 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: Arizona, United States, 31.57 latitude, -111.05 longitude.
Elevation: 996 m (3,267 ft).
Period of record: 1946 to 2026, 81 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

15 days at or beyond a record

The band shows the record high and record low for each calendar day at Tumacacori Nm. The lines show the 2026 daily maximum and minimum. 15 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Tumacacori Nm, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	31.7 C (89.1 F)	-15.6 C (3.9 F)	24.4 C (75.9 F)	-4.4 C (24.1 F)
Feb	33.3 C (91.9 F)	-12.8 C (9.0 F)	30.6 C (87.1 F)	-1.1 C (30.0 F)
Mar	37.8 C (100.0 F)	-9.4 C (15.1 F)	37.8 C (100.0 F)	-1.1 C (30.0 F)
Apr	37.8 C (100.0 F)	-6.7 C (19.9 F)	31.1 C (88.0 F)	3.3 C (37.9 F)
May	42.8 C (109.0 F)	-2.2 C (28.0 F)	37.8 C (100.0 F)	4.4 C (39.9 F)
Jun	45.0 C (113.0 F)	3.3 C (37.9 F)	39.4 C (102.9 F)	12.8 C (55.0 F)
Jul	45.0 C (113.0 F)	5.6 C (42.1 F)	40.6 C (105.1 F)	12.2 C (54.0 F)
Aug	42.8 C (109.0 F)	8.3 C (46.9 F)	39.4 C (102.9 F)	17.8 C (64.0 F)
Sep	42.2 C (108.0 F)	2.2 C (36.0 F)	n/a	n/a
Oct	40.0 C (104.0 F)	-7.8 C (18.0 F)	n/a	n/a
Nov	33.9 C (93.0 F)	-12.8 C (9.0 F)	n/a	n/a
Dec	31.1 C (88.0 F)	-15.0 C (5.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tumacacori Nm still stand. 1958 holds the most, with 60.

Standing records at Tumacacori Nm by the year they were set
Year set	Standing records
1946	15
1947	19
1948	33
1949	28
1950	35
1951	18
1952	21
1953	18
1954	12
1955	24
1956	24
1957	21
1958	60
1959	12
1960	16
1961	11
1962	35
1963	15
1964	17
1965	26
1966	17
1967	18
1968	20
1969	20
1970	18
1971	23
1972	18
1973	13
1974	11
1975	14
1976	8
1977	13
1978	19
1979	18
1980	37
1981	20
1982	7
1983	14
1984	6
1985	26
1986	17
1987	26
1988	11
1989	24
1990	16
1991	15
1992	10
1993	13
1994	17
1995	15
1996	16
1997	20
1998	13
1999	11
2000	27
2001	12
2002	10
2003	14
2004	14
2005	13
2006	10
2007	15
2008	11
2009	15
2010	20
2011	20
2012	23
2013	36
2014	39
2015	12
2016	10
2017	12
2018	13
2019	15
2020	14
2021	12
2022	5
2023	15
2024	11
2025	20
2026	22

All-Time Record Progression

6 new records

6 all-time records were set at Tumacacori Nm between 8 December 1978 and 12 January 2013. Each dot is a new record.

When Tumacacori Nm set new all-time records
Date	Kind	Detail
1978-12-08	Record low minimum temperature	Record low minimum temperature -15.0 C (5.0 F)
1981-06-25	Record high minimum temperature	Record high minimum temperature 27.8 C (82.0 F)
1983-10-01	Record daily precipitation	Record daily precipitation 92.2 mm (3.6 in)
1987-12-24	Record snow depth	Record snow depth 10.2 cm (4.0 in)
2011-02-04	Record low maximum temperature	Record low maximum temperature 1.1 C (34.0 F)
2013-01-12	Record low minimum temperature	Record low minimum temperature -15.6 C (3.9 F)

Wettest Day of Each Month

Oct: 92.2 mm (3.6 in)

The wettest day on record for each calendar month at Tumacacori Nm. The most was 92.2 mm (3.6 in) on 1 October 1983.

Record daily precipitation for each month at Tumacacori Nm
Month	Record daily precipitation (mm)	Date
Jan	57.2 mm (2.3 in)	18 January 1993
Feb	48.3 mm (1.9 in)	11 February 1991
Mar	49.5 mm (1.9 in)	28 March 1992
Apr	32.8 mm (1.3 in)	6 April 2001
May	26.2 mm (1.0 in)	21 May 1992
Jun	39.1 mm (1.5 in)	27 June 2008
Jul	73.9 mm (2.9 in)	30 July 1979
Aug	88.1 mm (3.5 in)	5 August 1958
Sep	73.2 mm (2.9 in)	7 September 2016
Oct	92.2 mm (3.6 in)	1 October 1983
Nov	82.6 mm (3.3 in)	11 November 1994
Dec	81.3 mm (3.2 in)	5 December 1994

Period of Record Coverage

1946 to 2026

81 years of record at Tumacacori Nm, 1946 to 2026. 11 years have data for under 90 percent of days and are left out of rankings: 1946, 1960, 1961, 1962, 1995, 2016, 2019, 2023 and others.

Days with data per year at Tumacacori Nm
Year	Days with data	Share of year	Complete
1946	255	70%	No
1947	363	99%	Yes
1948	364	99%	Yes
1949	359	98%	Yes
1950	363	99%	Yes
1951	363	99%	Yes
1952	365	100%	Yes
1953	363	99%	Yes
1954	363	99%	Yes
1955	361	99%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	363	99%	Yes
1959	332	91%	Yes
1960	322	88%	No
1961	312	85%	No
1962	325	89%	No
1963	362	99%	Yes
1964	361	99%	Yes
1965	357	98%	Yes
1966	359	98%	Yes
1967	355	97%	Yes
1968	366	100%	Yes
1969	354	97%	Yes
1970	364	100%	Yes
1971	365	100%	Yes
1972	358	98%	Yes
1973	365	100%	Yes
1974	354	97%	Yes
1975	356	98%	Yes
1976	353	96%	Yes
1977	356	98%	Yes
1978	360	99%	Yes
1979	362	99%	Yes
1980	363	99%	Yes
1981	364	100%	Yes
1982	353	97%	Yes
1983	362	99%	Yes
1984	358	98%	Yes
1985	360	99%	Yes
1986	352	96%	Yes
1987	358	98%	Yes
1988	357	98%	Yes
1989	345	95%	Yes
1990	347	95%	Yes
1991	345	95%	Yes
1992	350	96%	Yes
1993	348	95%	Yes
1994	346	95%	Yes
1995	314	86%	No
1996	363	99%	Yes
1997	360	99%	Yes
1998	361	99%	Yes
1999	356	98%	Yes
2000	354	97%	Yes
2001	353	97%	Yes
2002	330	90%	Yes
2003	357	98%	Yes
2004	360	98%	Yes
2005	360	99%	Yes
2006	331	91%	Yes
2007	362	99%	Yes
2008	330	90%	Yes
2009	363	99%	Yes
2010	363	99%	Yes
2011	363	99%	Yes
2012	363	99%	Yes
2013	356	98%	Yes
2014	361	99%	Yes
2015	362	99%	Yes
2016	321	88%	No
2017	355	97%	Yes
2018	356	98%	Yes
2019	314	86%	No
2020	358	98%	Yes
2021	343	94%	Yes
2022	351	96%	Yes
2023	324	89%	No
2024	329	90%	No
2025	313	86%	No
2026	240	66%	No

Latest Records

Latest records at Tumacacori Nm
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 August 2026	Tumacacori Nm, US	daily high min (Provisional)	22.8 C (73.0 F)	1.7 C (3.1 F)	79 years	38 of 100 (Notable)
27 August 2026	Tumacacori Nm, US	daily high max (Tie, Provisional)	39.4 C (102.9 F)	tie	64 years	6 of 100 (Routine)
22 August 2026	Tumacacori Nm, US	daily high max (Tie, Provisional)	39.4 C (102.9 F)	tie	53 years	6 of 100 (Routine)
31 July 2026	Tumacacori Nm, US	daily high min	23.9 C (75.0 F)	0.6 C (1.1 F)	31 years	19 of 100 (Routine)
18 June 2026	Tumacacori Nm, US	daily rain	22.6 mm (0.9 in)	14.2 mm (0.6 in)	25 years	20 of 100 (Routine)
13 June 2026	Tumacacori Nm, US	daily high min	23.9 C (75.0 F)	2.8 C (5.0 F)	27 years	23 of 100 (Routine)
8 June 2026	Tumacacori Nm, US	daily high min	20.6 C (69.1 F)	0.6 C (1.1 F)	11 years	12 of 100 (Routine)
5 May 2026	Tumacacori Nm, US	daily rain (Tie)	10.2 mm (0.4 in)	tie	56 years	6 of 100 (Routine)
4 May 2026	Tumacacori Nm, US	daily high min	15.6 C (60.1 F)	0.6 C (1.1 F)	64 years	28 of 100 (Routine)
30 April 2026	Tumacacori Nm, US	daily high min	13.9 C (57.0 F)	0.6 C (1.1 F)	44 years	22 of 100 (Routine)
1 April 2026	Tumacacori Nm, US	daily high min	17.2 C (63.0 F)	4.4 C (7.9 F)	48 years	34 of 100 (Routine)
31 March 2026	Tumacacori Nm, US	monthly high min (Tie)	15.6 C (60.1 F)	tie	0 years	4 of 100 (Routine)
30 March 2026	Tumacacori Nm, US	monthly high min	15.6 C (60.1 F)	0.6 C (1.1 F)	22 years	25 of 100 (Routine)
29 March 2026	Tumacacori Nm, US	daily high max	35.6 C (96.1 F)	1.7 C (3.1 F)	55 years	27 of 100 (Routine)
28 March 2026	Tumacacori Nm, US	daily high max	35.6 C (96.1 F)	3.9 C (7.0 F)	11 years	18 of 100 (Routine)
27 March 2026	Tumacacori Nm, US	daily high max	35.0 C (95.0 F)	2.8 C (5.0 F)	40 years	25 of 100 (Routine)
26 March 2026	Tumacacori Nm, US	daily high max (Tie)	35.0 C (95.0 F)	tie	37 years	4 of 100 (Routine)
25 March 2026	Tumacacori Nm, US	daily high max	34.4 C (93.9 F)	2.2 C (4.0 F)	79 years	35 of 100 (Notable)
24 March 2026	Tumacacori Nm, US	daily high max	34.4 C (93.9 F)	2.2 C (4.0 F)	52 years	27 of 100 (Routine)
23 March 2026	Tumacacori Nm, US	daily high max	36.1 C (97.0 F)	4.4 C (7.9 F)	55 years	32 of 100 (Routine)

Climate Trend

66 complete years, 1947 to 2021

One stripe for each of 66 complete years at Tumacacori Nm, 1947 to 2021. Blue stripes are years cooler than the station's own mean of 17.8 C (64.1 F); red stripes are warmer. The coolest year was 1998, at 16.5 C (61.7 F), and the warmest was 1980, at 19.2 C (66.6 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Tumacacori Nm as warming stripes, 1947 to 2021
Year	Annual mean temperature	Difference from the station mean
1947	17.8 C	-0.08 C
1948	17.6 C	-0.25 C
1949	17.5 C	-0.30 C
1950	18.7 C	+0.84 C
1951	17.9 C	+0.06 C
1952	17.8 C	-0.08 C
1953	17.9 C	+0.02 C
1954	18.7 C	+0.89 C
1955	17.4 C	-0.41 C
1956	17.8 C	+0.00 C
1957	18.2 C	+0.41 C
1958	17.6 C	-0.26 C
1959	18.1 C	+0.25 C
1960	17.5 C	-0.31 C
1961	17.7 C	-0.17 C
1962	18.3 C	+0.42 C
1963	18.3 C	+0.42 C
1964	16.8 C	-1.02 C
1965	17.5 C	-0.31 C
1966	17.8 C	+0.01 C
1967	17.8 C	-0.08 C
1968	17.6 C	-0.24 C
1969	18.1 C	+0.29 C
1970	17.8 C	-0.03 C
1971	17.3 C	-0.55 C
1972	17.8 C	-0.01 C
1973	16.6 C	-1.28 C
1974	17.7 C	-0.13 C
1975	17.2 C	-0.61 C
1976	17.7 C	-0.11 C
1977	18.6 C	+0.78 C
1978	18.3 C	+0.47 C
1979	18.1 C	+0.27 C
1980	19.2 C	+1.38 C
1981	19.1 C	+1.29 C
1982	18.1 C	+0.30 C
1983	17.7 C	-0.17 C
1984	18.0 C	+0.16 C
1985	18.0 C	+0.21 C
1986	18.7 C	+0.84 C
1987	17.2 C	-0.62 C
1988	17.5 C	-0.35 C
1989	18.4 C	+0.54 C
1990	17.4 C	-0.47 C
1992	17.4 C	-0.40 C
1993	17.5 C	-0.32 C
1996	18.2 C	+0.39 C
1997	17.3 C	-0.49 C
1998	16.5 C	-1.34 C
1999	17.7 C	-0.13 C
2000	18.2 C	+0.37 C
2001	17.6 C	-0.28 C
2003	18.3 C	+0.49 C
2004	17.6 C	-0.22 C
2005	18.2 C	+0.32 C
2007	17.9 C	+0.07 C
2009	18.2 C	+0.37 C
2010	17.5 C	-0.37 C
2011	17.7 C	-0.14 C
2012	18.3 C	+0.46 C
2013	17.0 C	-0.79 C
2014	17.2 C	-0.64 C
2015	17.9 C	+0.06 C
2017	18.6 C	+0.78 C
2018	17.6 C	-0.20 C
2021	17.6 C	-0.20 C

The fitted trend in annual mean temperature here over 1947 to 2021 is -0.01 C (-0.07 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.02 F (-0.13 to 0.09) per decade. The slope is a straight line fitted to 66 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Tumacacori Nm
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.01 C (-0.07 to 0.05) per decade	-0.02 F (-0.13 to 0.09) per decade	1947 to 2021	66	Not clearly different from zero
Mean daily maximum	-0.2 C (-0.3 to -0.1) per decade	-0.3 F (-0.5 to -0.2) per decade	1947 to 2021	66	Fall
Mean daily minimum	0.2 C (0.1 to 0.2) per decade	0.3 F (0.2 to 0.4) per decade	1947 to 2021	66	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

1946 to 2026

Yearly extremes at Tumacacori Nm: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.0 C (113.0 F)	1960	42.2 C (108.0 F)	81
Coldest night (TNn)	-15.6 C (3.9 F)	2013	-8.3 C (17.1 F)	81
Wettest day (Rx1day)	92.2 mm (3.6 in)	1983	39.4 mm (1.6 in)	81
Wettest five days (Rx5day)	238.7 mm (9.4 in)	1983	62.4 mm (2.5 in)	81
Longest dry spell (CDD)	149 days	1972	71 days	81

Hottest day (TXx)

The hottest day of the year at Tumacacori Nm, 1946 to 2026. The record is 45.0 C (113.0 F) in 1960, marked on the chart; the median year is 42.2 C (108.0 F).

Hottest day (TXx) at Tumacacori Nm by year
Year	Hottest day (TXx)
1946	42.2 C (108.0 F)
1947	42.8 C (109.0 F)
1948	42.2 C (108.0 F)
1949	41.7 C (107.1 F)
1950	42.2 C (108.0 F)
1951	41.7 C (107.1 F)
1952	42.2 C (108.0 F)
1953	42.8 C (109.0 F)
1954	43.3 C (109.9 F)
1955	43.9 C (111.0 F)
1956	42.2 C (108.0 F)
1957	43.9 C (111.0 F)
1958	43.9 C (111.0 F)
1959	42.2 C (108.0 F)
1960	45.0 C (113.0 F)
1961	42.8 C (109.0 F)
1962	42.2 C (108.0 F)
1963	41.7 C (107.1 F)
1964	43.3 C (109.9 F)
1965	42.2 C (108.0 F)
1966	41.1 C (106.0 F)
1967	41.1 C (106.0 F)
1968	43.9 C (111.0 F)
1969	42.8 C (109.0 F)
1970	45.0 C (113.0 F)
1971	43.9 C (111.0 F)
1972	43.3 C (109.9 F)
1973	43.9 C (111.0 F)
1974	43.9 C (111.0 F)
1975	42.2 C (108.0 F)
1976	42.8 C (109.0 F)
1977	42.2 C (108.0 F)
1978	43.3 C (109.9 F)
1979	43.9 C (111.0 F)
1980	44.4 C (111.9 F)
1981	43.9 C (111.0 F)
1982	41.7 C (107.1 F)
1983	45.0 C (113.0 F)
1984	40.6 C (105.1 F)
1985	43.3 C (109.9 F)
1986	41.7 C (107.1 F)
1987	40.0 C (104.0 F)
1988	42.2 C (108.0 F)
1989	44.4 C (111.9 F)
1990	43.9 C (111.0 F)
1991	40.0 C (104.0 F)
1992	41.7 C (107.1 F)
1993	41.7 C (107.1 F)
1994	42.8 C (109.0 F)
1995	42.8 C (109.0 F)
1996	41.1 C (106.0 F)
1997	42.2 C (108.0 F)
1998	41.1 C (106.0 F)
1999	41.1 C (106.0 F)
2000	40.6 C (105.1 F)
2001	41.1 C (106.0 F)
2002	41.7 C (107.1 F)
2003	41.7 C (107.1 F)
2004	40.0 C (104.0 F)
2005	42.2 C (108.0 F)
2006	40.6 C (105.1 F)
2007	41.7 C (107.1 F)
2008	41.7 C (107.1 F)
2009	39.4 C (102.9 F)
2010	40.6 C (105.1 F)
2011	42.8 C (109.0 F)
2012	40.6 C (105.1 F)
2013	40.0 C (104.0 F)
2014	39.4 C (102.9 F)
2015	40.6 C (105.1 F)
2016	43.3 C (109.9 F)
2017	43.3 C (109.9 F)
2018	40.6 C (105.1 F)
2019	40.0 C (104.0 F)
2020	41.1 C (106.0 F)
2021	42.8 C (109.0 F)
2022	40.0 C (104.0 F)
2023	42.2 C (108.0 F)
2024	42.2 C (108.0 F)
2025	42.8 C (109.0 F)
2026	40.6 C (105.1 F)

Coldest night (TNn)

The coldest night of the year at Tumacacori Nm, 1946 to 2026. The record is -15.6 C (3.9 F) in 2013, marked on the chart; the median year is -8.3 C (17.1 F).

Coldest night (TNn) at Tumacacori Nm by year
Year	Coldest night (TNn)
1946	-5.6 C (21.9 F)
1947	-8.9 C (16.0 F)
1948	-11.1 C (12.0 F)
1949	-11.7 C (10.9 F)
1950	-11.7 C (10.9 F)
1951	-7.2 C (19.0 F)
1952	-8.3 C (17.1 F)
1953	-10.0 C (14.0 F)
1954	-12.2 C (10.0 F)
1955	-11.7 C (10.9 F)
1956	-9.4 C (15.1 F)
1957	-7.2 C (19.0 F)
1958	-8.3 C (17.1 F)
1959	-7.8 C (18.0 F)
1960	-10.6 C (12.9 F)
1961	-6.7 C (19.9 F)
1962	-10.0 C (14.0 F)
1963	-10.6 C (12.9 F)
1964	-11.1 C (12.0 F)
1965	-10.0 C (14.0 F)
1966	-8.3 C (17.1 F)
1967	-10.0 C (14.0 F)
1968	-10.6 C (12.9 F)
1969	-7.8 C (18.0 F)
1970	-8.3 C (17.1 F)
1971	-13.3 C (8.1 F)
1972	-9.4 C (15.1 F)
1973	-10.0 C (14.0 F)
1974	-12.2 C (10.0 F)
1975	-8.3 C (17.1 F)
1976	-8.9 C (16.0 F)
1977	-6.1 C (21.0 F)
1978	-15.0 C (5.0 F)
1979	-8.9 C (16.0 F)
1980	-4.4 C (24.1 F)
1981	-7.2 C (19.0 F)
1982	-6.1 C (21.0 F)
1983	-5.6 C (21.9 F)
1984	-6.1 C (21.0 F)
1985	-8.3 C (17.1 F)
1986	-6.1 C (21.0 F)
1987	-10.0 C (14.0 F)
1988	-10.6 C (12.9 F)
1989	-8.9 C (16.0 F)
1990	-8.9 C (16.0 F)
1991	-7.8 C (18.0 F)
1992	-8.3 C (17.1 F)
1993	-6.1 C (21.0 F)
1994	-7.8 C (18.0 F)
1995	-5.0 C (23.0 F)
1996	-8.3 C (17.1 F)
1997	-7.2 C (19.0 F)
1998	-7.8 C (18.0 F)
1999	-6.1 C (21.0 F)
2000	-7.2 C (19.0 F)
2001	-6.7 C (19.9 F)
2002	-9.4 C (15.1 F)
2003	-10.6 C (12.9 F)
2004	-9.4 C (15.1 F)
2005	-8.3 C (17.1 F)
2006	-8.3 C (17.1 F)
2007	-11.7 C (10.9 F)
2008	-8.3 C (17.1 F)
2009	-5.0 C (23.0 F)
2010	-10.6 C (12.9 F)
2011	-11.7 C (10.9 F)
2012	-6.1 C (21.0 F)
2013	-15.6 C (3.9 F)
2014	-13.3 C (8.1 F)
2015	-8.3 C (17.1 F)
2016	-8.3 C (17.1 F)
2017	-7.8 C (18.0 F)
2018	-7.8 C (18.0 F)
2019	-7.8 C (18.0 F)
2020	-6.7 C (19.9 F)
2021	-7.2 C (19.0 F)
2022	-9.4 C (15.1 F)
2023	-6.7 C (19.9 F)
2024	-6.7 C (19.9 F)
2025	-8.3 C (17.1 F)
2026	-4.4 C (24.1 F)

Wettest day (Rx1day)

The wettest day of the year at Tumacacori Nm, 1946 to 2026. The record is 92.2 mm (3.6 in) in 1983, marked on the chart; the median year is 39.4 mm (1.6 in).

Wettest day (Rx1day) at Tumacacori Nm by year
Year	Wettest day (Rx1day)
1946	33.3 mm (1.3 in)
1947	12.7 mm (0.5 in)
1948	34.5 mm (1.4 in)
1949	30.5 mm (1.2 in)
1950	27.4 mm (1.1 in)
1951	64.8 mm (2.6 in)
1952	27.4 mm (1.1 in)
1953	23.6 mm (0.9 in)
1954	74.9 mm (2.9 in)
1955	49.3 mm (1.9 in)
1956	67.3 mm (2.6 in)
1957	20.3 mm (0.8 in)
1958	88.1 mm (3.5 in)
1959	43.2 mm (1.7 in)
1960	47.2 mm (1.9 in)
1961	35.6 mm (1.4 in)
1962	25.1 mm (1.0 in)
1963	45.5 mm (1.8 in)
1964	54.4 mm (2.1 in)
1965	30.7 mm (1.2 in)
1966	43.2 mm (1.7 in)
1967	45.7 mm (1.8 in)
1968	33.0 mm (1.3 in)
1969	38.1 mm (1.5 in)
1970	38.1 mm (1.5 in)
1971	39.4 mm (1.6 in)
1972	25.7 mm (1.0 in)
1973	47.0 mm (1.9 in)
1974	39.9 mm (1.6 in)
1975	23.6 mm (0.9 in)
1976	31.8 mm (1.3 in)
1977	41.4 mm (1.6 in)
1978	57.9 mm (2.3 in)
1979	73.9 mm (2.9 in)
1980	27.9 mm (1.1 in)
1981	34.5 mm (1.4 in)
1982	26.4 mm (1.0 in)
1983	92.2 mm (3.6 in)
1984	57.9 mm (2.3 in)
1985	50.0 mm (2.0 in)
1986	21.3 mm (0.8 in)
1987	35.3 mm (1.4 in)
1988	39.6 mm (1.6 in)
1989	54.9 mm (2.2 in)
1990	39.4 mm (1.6 in)
1991	48.3 mm (1.9 in)
1992	76.2 mm (3.0 in)
1993	57.2 mm (2.3 in)
1994	82.6 mm (3.3 in)
1995	39.4 mm (1.6 in)
1996	53.3 mm (2.1 in)
1997	38.4 mm (1.5 in)
1998	35.1 mm (1.4 in)
1999	30.5 mm (1.2 in)
2000	50.8 mm (2.0 in)
2001	39.9 mm (1.6 in)
2002	50.3 mm (2.0 in)
2003	24.1 mm (0.9 in)
2004	30.5 mm (1.2 in)
2005	35.8 mm (1.4 in)
2006	61.5 mm (2.4 in)
2007	33.0 mm (1.3 in)
2008	39.1 mm (1.5 in)
2009	28.4 mm (1.1 in)
2010	42.4 mm (1.7 in)
2011	34.3 mm (1.4 in)
2012	32.8 mm (1.3 in)
2013	38.9 mm (1.5 in)
2014	50.8 mm (2.0 in)
2015	63.0 mm (2.5 in)
2016	73.2 mm (2.9 in)
2017	20.3 mm (0.8 in)
2018	67.3 mm (2.6 in)
2019	48.0 mm (1.9 in)
2020	51.3 mm (2.0 in)
2021	58.9 mm (2.3 in)
2022	33.0 mm (1.3 in)
2023	40.6 mm (1.6 in)
2024	30.5 mm (1.2 in)
2025	21.6 mm (0.9 in)
2026	31.8 mm (1.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tumacacori Nm, 1946 to 2026. The record is 238.7 mm (9.4 in) in 1983, marked on the chart; the median year is 62.4 mm (2.5 in).

Wettest five days (Rx5day) at Tumacacori Nm by year
Year	Wettest five days (Rx5day)
1946	56.4 mm (2.2 in)
1947	24.0 mm (0.9 in)
1948	93.5 mm (3.7 in)
1949	58.2 mm (2.3 in)
1950	57.9 mm (2.3 in)
1951	71.2 mm (2.8 in)
1952	32.0 mm (1.3 in)
1953	60.7 mm (2.4 in)
1954	103.1 mm (4.1 in)
1955	81.5 mm (3.2 in)
1956	78.0 mm (3.1 in)
1957	28.7 mm (1.1 in)
1958	102.8 mm (4.0 in)
1959	66.1 mm (2.6 in)
1960	62.4 mm (2.5 in)
1961	58.9 mm (2.3 in)
1962	27.6 mm (1.1 in)
1963	54.9 mm (2.2 in)
1964	78.8 mm (3.1 in)
1965	73.7 mm (2.9 in)
1966	84.7 mm (3.3 in)
1967	92.2 mm (3.6 in)
1968	74.1 mm (2.9 in)
1969	38.1 mm (1.5 in)
1970	41.8 mm (1.6 in)
1971	89.6 mm (3.5 in)
1972	48.3 mm (1.9 in)
1973	59.4 mm (2.3 in)
1974	59.7 mm (2.4 in)
1975	41.9 mm (1.6 in)
1976	47.8 mm (1.9 in)
1977	102.1 mm (4.0 in)
1978	75.4 mm (3.0 in)
1979	79.0 mm (3.1 in)
1980	38.4 mm (1.5 in)
1981	64.1 mm (2.5 in)
1982	45.3 mm (1.8 in)
1983	238.7 mm (9.4 in)
1984	82.7 mm (3.3 in)
1985	107.4 mm (4.2 in)
1986	53.5 mm (2.1 in)
1987	58.2 mm (2.3 in)
1988	75.4 mm (3.0 in)
1989	56.2 mm (2.2 in)
1990	69.8 mm (2.7 in)
1991	56.2 mm (2.2 in)
1992	80.1 mm (3.2 in)
1993	32.9 mm (1.3 in)
1994	108.6 mm (4.3 in)
1995	52.4 mm (2.1 in)
1996	58.6 mm (2.3 in)
1997	53.8 mm (2.1 in)
1998	75.0 mm (3.0 in)
1999	42.4 mm (1.7 in)
2000	100.6 mm (4.0 in)
2001	72.4 mm (2.9 in)
2002	60.3 mm (2.4 in)
2003	32.8 mm (1.3 in)
2004	38.1 mm (1.5 in)
2005	60.3 mm (2.4 in)
2006	121.8 mm (4.8 in)
2007	49.8 mm (2.0 in)
2008	81.6 mm (3.2 in)
2009	71.0 mm (2.8 in)
2010	96.3 mm (3.8 in)
2011	58.2 mm (2.3 in)
2012	41.4 mm (1.6 in)
2013	53.9 mm (2.1 in)
2014	69.1 mm (2.7 in)
2015	92.0 mm (3.6 in)
2016	73.2 mm (2.9 in)
2017	48.1 mm (1.9 in)
2018	69.1 mm (2.7 in)
2019	69.6 mm (2.7 in)
2020	56.4 mm (2.2 in)
2021	82.0 mm (3.2 in)
2022	96.1 mm (3.8 in)
2023	46.5 mm (1.8 in)
2024	89.4 mm (3.5 in)
2025	43.2 mm (1.7 in)
2026	72.0 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tumacacori Nm, 1946 to 2026. The record is 149 days in 1972, marked on the chart; the median year is 71 days.

Longest dry spell (CDD) at Tumacacori Nm by year
Year	Longest dry spell (CDD)
1946	62 days
1947	61 days
1948	79 days
1949	78 days
1950	129 days
1951	71 days
1952	46 days
1953	84 days
1954	84 days
1955	134 days
1956	85 days
1957	54 days
1958	71 days
1959	58 days
1960	75 days
1961	78 days
1962	98 days
1963	68 days
1964	80 days
1965	79 days
1966	62 days
1967	53 days
1968	82 days
1969	58 days
1970	114 days
1971	78 days
1972	149 days
1973	75 days
1974	107 days
1975	74 days
1976	41 days
1977	88 days
1978	52 days
1979	48 days
1980	76 days
1981	56 days
1982	63 days
1983	85 days
1984	82 days
1985	70 days
1986	71 days
1987	54 days
1988	69 days
1989	37 days
1990	39 days
1991	55 days
1992	46 days
1993	46 days
1994	26 days
1995	71 days
1996	61 days
1997	46 days
1998	72 days
1999	102 days
2000	90 days
2001	32 days
2002	112 days
2003	48 days
2004	57 days
2005	74 days
2006	53 days
2007	59 days
2008	65 days
2009	79 days
2010	74 days
2011	84 days
2012	66 days
2013	113 days
2014	122 days
2015	28 days
2016	61 days
2017	61 days
2018	107 days
2019	115 days
2020	69 days
2021	98 days
2022	82 days
2023	44 days
2024	83 days
2025	79 days
2026	35 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

66 years with a frost

Across 66 years with a frost, the median last spring frost at Tumacacori Nm falls on 15 April and the median first autumn frost on 8 November, which leaves a median of 208 days between them.

In 1983 to 2021 the median growing season was 214 days. That is 12 days more than in 1947 to 1976.

Fitted over all years, the growing season changes by +1.4 days per decade at this station.

Frost dates and growing season at Tumacacori Nm
Measure	Median, all years	Earliest period (1947 to 1976)	Recent period (1983 to 2021)	Recent against earliest	Fitted trend
Last spring frost	15 April	21 April	6 April	15 days earlier	-1.7 days per decade
First autumn frost	8 November	8 November	10 November	2 days later	-0.4 days per decade
Growing days	208 days	202 days	214 days	12 days more	+1.4 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

70 years, 1947 to 2024

A day with at least 39.3 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 99.5 mm (3.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Tumacacori Nm: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	39.3 mm (1.5 in)
5 years	54.3 mm (2.1 in)
10 years	64.6 mm (2.5 in)
25 years	78.2 mm (3.1 in)
50 years	88.7 mm (3.5 in)
100 years	99.5 mm (3.9 in)	Longer than the 70 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, 70 years of values from 1947 to 2024.

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: 92.2 mm (3.6 in) in 1983; 88.1 mm (3.5 in) in 1958; 76.2 mm (3.0 in) in 1992.

Station Changes

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

Climate Twins

2001 to 2021 against 1961 to 1990

Over 2001 to 2021, Tumacacori Nm had a mean temperature of 17.8 C (64.1 F) and 365.5 mm (14.4 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Cascabel (United States, 102 km away), Porterville (United States, 890 km away) and Bacanuchi (Mexico, 134 km away).

Climate twins of Tumacacori Nm: stations whose 1961 to 1990 climate is closest to its 2001 to 2021 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Cascabel	United States	102 km (63 mi)	17.5 C (63.5 F)	355.0 mm (14.0 in)	0.66
Porterville	United States	890 km (553 mi)	17.7 C (63.9 F)	280.0 mm (11.0 in)	0.81
Bacanuchi	Mexico	134 km (83 mi)	17.3 C (63.1 F)	484.9 mm (19.1 in)	0.88

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 Tumacacori Nm standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tumacacori Nm 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 2026-10-14. Last revised 14 October 2026 (2026-10-14).