Agua Prieta Weather Records (MXN00026001)

Record envelope, standing records and threshold days for Agua Prieta (MXN00026001), Mexico, with 51 years of record.

Key Facts for Agua Prieta

Agua Prieta (MXN00026001) is a weather station in Mexico at 31.32 latitude and -109.53 longitude, 1,210 m (3,969 ft) above sea level.
The station reports from 1961 to 2011, 51 years of record.
1,464 records set at Agua Prieta still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Agua Prieta set a daily record precipitation of 13.5 mm (0.5 in) on 12 December 2011.

About the Station

Location: Mexico, 31.32 latitude, -109.53 longitude.
Elevation: 1,210 m (3,969 ft).
Period of record: 1961 to 2011, 51 years.
Eligible elements: tmax, tmin, prcp.

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 Agua Prieta. 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 Agua Prieta, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	30.0 C (86.0 F)	-12.8 C (9.0 F)	n/a	n/a
Feb	31.7 C (89.1 F)	-12.2 C (10.0 F)	n/a	n/a
Mar	35.0 C (95.0 F)	-9.4 C (15.1 F)	n/a	n/a
Apr	37.8 C (100.0 F)	-3.9 C (25.0 F)	n/a	n/a
May	41.7 C (107.1 F)	-1.1 C (30.0 F)	n/a	n/a
Jun	45.0 C (113.0 F)	5.6 C (42.1 F)	n/a	n/a
Jul	43.9 C (111.0 F)	10.0 C (50.0 F)	n/a	n/a
Aug	41.7 C (107.1 F)	10.0 C (50.0 F)	n/a	n/a
Sep	40.6 C (105.1 F)	3.9 C (39.0 F)	n/a	n/a
Oct	37.8 C (100.0 F)	-4.4 C (24.1 F)	n/a	n/a
Nov	35.6 C (96.1 F)	-8.9 C (16.0 F)	n/a	n/a
Dec	30.6 C (87.1 F)	-19.4 C (-2.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Agua Prieta still stand. 1964 holds the most, with 64.

Standing records at Agua Prieta by the year they were set
Year set	Standing records
1961	23
1962	55
1963	3
1964	64
1965	44
1966	25
1967	36
1968	34
1969	56
1970	46
1971	54
1972	20
1973	8
1974	22
1975	26
1976	29
1977	27
1978	24
1979	42
1980	14
1981	9
1982	32
1983	29
1984	14
1985	29
1986	17
1987	22
1988	23
1989	40
1990	31
1991	18
1992	26
1993	24
1994	26
1995	17
1996	26
1997	21
1998	13
2000	8
2001	15
2002	24
2003	55
2004	28
2005	61
2006	38
2007	53
2008	40
2009	32
2010	15
2011	26

All-Time Record Progression

3 new records

3 all-time records were set at Agua Prieta between 24 July 2001 and 3 February 2010. Each dot is a new record.

When Agua Prieta set new all-time records
Date	Kind	Detail
2001-07-24	Record daily precipitation	Record daily precipitation 66.5 mm (2.6 in)
2005-07-13	Record high minimum temperature	Record high minimum temperature 26.7 C (80.1 F)
2010-02-03	Record daily precipitation	Record daily precipitation 69.9 mm (2.8 in)

Wettest Day of Each Month

Feb: 69.9 mm (2.8 in)

The wettest day on record for each calendar month at Agua Prieta. The most was 69.9 mm (2.8 in) on 3 February 2010.

Record daily precipitation for each month at Agua Prieta
Month	Record daily precipitation (mm)	Date
Jan	31.8 mm (1.3 in)	18 January 1993
Feb	69.9 mm (2.8 in)	3 February 2010
Mar	19.8 mm (0.8 in)	22 March 2007
Apr	25.4 mm (1.0 in)	14 April 1988
May	21.8 mm (0.9 in)	5 May 1992
Jun	35.3 mm (1.4 in)	29 June 1981
Jul	66.5 mm (2.6 in)	24 July 2001
Aug	65.8 mm (2.6 in)	16 August 1966
Sep	59.9 mm (2.4 in)	5 September 1991
Oct	55.4 mm (2.2 in)	22 October 2000
Nov	54.9 mm (2.2 in)	11 November 1994
Dec	64.8 mm (2.6 in)	9 December 1988

Period of Record Coverage

1961 to 2011

50 years of record at Agua Prieta, 1961 to 2011. 10 years have data for under 90 percent of days and are left out of rankings: 1962, 1963, 1972, 1973, 1987, 1998, 2000, 2009 and others.

Days with data per year at Agua Prieta
Year	Days with data	Share of year	Complete
1961	334	92%	Yes
1962	212	58%	No
1963	120	33%	No
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	363	99%	Yes
1968	366	100%	Yes
1969	359	98%	Yes
1970	365	100%	Yes
1971	363	99%	Yes
1972	181	49%	No
1973	92	25%	No
1974	363	99%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	363	99%	Yes
1979	363	99%	Yes
1980	365	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	361	99%	Yes
1985	331	91%	Yes
1986	363	99%	Yes
1987	273	75%	No
1988	363	99%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	364	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	365	100%	Yes
1997	365	100%	Yes
1998	280	77%	No
2000	92	25%	No
2001	353	97%	Yes
2002	334	92%	Yes
2003	359	98%	Yes
2004	358	98%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	362	99%	Yes
2008	347	95%	Yes
2009	263	72%	No
2010	190	52%	No
2011	296	81%	No

Latest Records

Latest records at Agua Prieta
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 December 2011	Agua Prieta, MX	daily rain	13.5 mm (0.5 in)	1.6 mm (0.06 in)	16 years	11 of 100 (Routine)
24 November 2011	Agua Prieta, MX	daily rain	25.4 mm (1.0 in)	3.3 mm (0.13 in)	32 years	18 of 100 (Routine)
21 November 2011	Agua Prieta, MX	daily high min	10.0 C (50.0 F)	4.4 C (7.9 F)	6 years	19 of 100 (Routine)
22 October 2011	Agua Prieta, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	4 years	1 of 100 (Routine)
13 October 2011	Agua Prieta, MX	daily high max	35.0 C (95.0 F)	1.1 C (2.0 F)	14 years	11 of 100 (Routine)
8 October 2011	Agua Prieta, MX	daily low min	3.9 C (39.0 F)	0.5 C (0.9 F)	40 years	18 of 100 (Routine)
25 September 2011	Agua Prieta, MX	daily high max (Tie)	36.7 C (98.1 F)	tie	5 years	1 of 100 (Routine)
23 September 2011	Agua Prieta, MX	daily high max (Tie)	36.7 C (98.1 F)	tie	2 years	1 of 100 (Routine)
16 September 2011	Agua Prieta, MX	daily high min	20.0 C (68.0 F)	0.6 C (1.1 F)	45 years	20 of 100 (Routine)
15 September 2011	Agua Prieta, MX	daily high max (Tie)	37.8 C (100.0 F)	tie	8 years	1 of 100 (Routine)
11 September 2011	Agua Prieta, MX	daily high max	37.8 C (100.0 F)	1.1 C (2.0 F)	20 years	14 of 100 (Routine)
10 September 2011	Agua Prieta, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	41 years	4 of 100 (Routine)
8 September 2011	Agua Prieta, MX	daily high max	37.8 C (100.0 F)	1.1 C (2.0 F)	49 years	22 of 100 (Routine)
8 September 2011	Agua Prieta, MX	daily high min	20.6 C (69.1 F)	0.6 C (1.1 F)	6 years	9 of 100 (Routine)
7 September 2011	Agua Prieta, MX	daily high max	38.9 C (102.0 F)	2.2 C (4.0 F)	2 years	11 of 100 (Routine)
7 September 2011	Agua Prieta, MX	monthly high min (Tie)	21.7 C (71.1 F)	tie	16 years	4 of 100 (Routine)
6 September 2011	Agua Prieta, MX	monthly high min (Tie)	21.7 C (71.1 F)	tie	15 years	4 of 100 (Routine)
6 September 2011	Agua Prieta, MX	daily high max (Tie)	37.8 C (100.0 F)	tie	16 years	2 of 100 (Routine)
4 September 2011	Agua Prieta, MX	daily high max	38.9 C (102.0 F)	1.1 C (2.0 F)	9 years	10 of 100 (Routine)
3 September 2011	Agua Prieta, MX	daily high max (Tie)	37.8 C (100.0 F)	tie	28 years	3 of 100 (Routine)

Climate Trend

36 complete years, 1964 to 2007

One stripe for each of 36 complete years at Agua Prieta, 1964 to 2007. Blue stripes are years cooler than the station's own mean of 17.2 C (62.9 F); red stripes are warmer. The coolest year was 1975, at 15.9 C (60.7 F), and the warmest was 2005, at 19.6 C (67.3 F). The strongest colour marks a difference of 2.5 C (4.5 F).

Annual mean temperature at Agua Prieta as warming stripes, 1964 to 2007
Year	Annual mean temperature	Difference from the station mean
1964	16.5 C	-0.73 C
1965	16.8 C	-0.41 C
1966	16.9 C	-0.34 C
1967	17.0 C	-0.24 C
1968	16.5 C	-0.71 C
1969	17.0 C	-0.15 C
1970	16.7 C	-0.46 C
1971	16.4 C	-0.81 C
1974	16.6 C	-0.55 C
1975	15.9 C	-1.26 C
1976	16.3 C	-0.89 C
1977	16.5 C	-0.69 C
1978	16.5 C	-0.71 C
1979	16.0 C	-1.19 C
1980	16.8 C	-0.44 C
1981	17.0 C	-0.23 C
1982	16.4 C	-0.83 C
1983	15.9 C	-1.25 C
1984	16.5 C	-0.72 C
1986	16.9 C	-0.28 C
1988	16.9 C	-0.28 C
1989	17.9 C	+0.73 C
1990	16.9 C	-0.32 C
1991	16.7 C	-0.52 C
1992	16.7 C	-0.51 C
1993	17.2 C	-0.03 C
1994	17.8 C	+0.59 C
1995	17.8 C	+0.57 C
1996	18.1 C	+0.90 C
1997	17.9 C	+0.69 C
2001	18.0 C	+0.79 C
2003	19.5 C	+2.28 C
2004	18.6 C	+1.38 C
2005	19.6 C	+2.44 C
2006	19.3 C	+2.15 C
2007	19.3 C	+2.06 C

The annual mean temperature here has risen by 0.6 C (0.4 to 0.8) per decade over 1964 to 2007. In Fahrenheit: 1.1 F (0.8 to 1.4) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Agua Prieta
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.6 C (0.4 to 0.8) per decade	1.1 F (0.8 to 1.4) per decade	1964 to 2007	36	Rise
Mean daily maximum	0.4 C (0.1 to 0.7) per decade	0.7 F (0.1 to 1.2) per decade	1964 to 2007	36	Rise
Mean daily minimum	0.9 C (0.7 to 1.0) per decade	1.5 F (1.3 to 1.7) per decade	1964 to 2007	36	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

1961 to 2011

Yearly extremes at Agua Prieta: 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)	1969	41.1 C (106.0 F)	50
Coldest night (TNn)	-19.4 C (-2.9 F)	1978	-7.2 C (19.0 F)	50
Wettest day (Rx1day)	69.9 mm (2.8 in)	2010	41.9 mm (1.6 in)	50
Wettest five days (Rx5day)	135.8 mm (5.3 in)	1977	61.9 mm (2.4 in)	50
Longest dry spell (CDD)	178 days	2011	63 days	50

Hottest day (TXx)

The hottest day of the year at Agua Prieta, 1961 to 2011. The record is 45.0 C (113.0 F) in 1969, marked on the chart; the median year is 41.1 C (106.0 F).

Hottest day (TXx) at Agua Prieta by year
Year	Hottest day (TXx)
1961	42.8 C (109.0 F)
1962	43.3 C (109.9 F)
1963	36.1 C (97.0 F)
1964	43.9 C (111.0 F)
1965	41.7 C (107.1 F)
1966	41.7 C (107.1 F)
1967	41.1 C (106.0 F)
1968	42.2 C (108.0 F)
1969	45.0 C (113.0 F)
1970	41.1 C (106.0 F)
1971	40.6 C (105.1 F)
1972	35.0 C (95.0 F)
1973	32.8 C (91.0 F)
1974	40.6 C (105.1 F)
1975	39.4 C (102.9 F)
1976	40.0 C (104.0 F)
1977	40.0 C (104.0 F)
1978	40.0 C (104.0 F)
1979	40.6 C (105.1 F)
1980	41.1 C (106.0 F)
1981	40.0 C (104.0 F)
1982	38.9 C (102.0 F)
1983	38.9 C (102.0 F)
1984	37.8 C (100.0 F)
1985	39.4 C (102.9 F)
1986	40.0 C (104.0 F)
1987	37.2 C (99.0 F)
1988	40.0 C (104.0 F)
1989	42.8 C (109.0 F)
1990	42.8 C (109.0 F)
1991	38.9 C (102.0 F)
1992	40.6 C (105.1 F)
1993	40.0 C (104.0 F)
1994	43.9 C (111.0 F)
1995	41.1 C (106.0 F)
1996	41.7 C (107.1 F)
1997	42.8 C (109.0 F)
1998	42.8 C (109.0 F)
2000	35.0 C (95.0 F)
2001	40.0 C (104.0 F)
2002	42.2 C (108.0 F)
2003	42.8 C (109.0 F)
2004	41.7 C (107.1 F)
2005	42.2 C (108.0 F)
2006	42.2 C (108.0 F)
2007	42.2 C (108.0 F)
2008	42.8 C (109.0 F)
2009	40.6 C (105.1 F)
2010	41.7 C (107.1 F)
2011	45.0 C (113.0 F)

Coldest night (TNn)

The coldest night of the year at Agua Prieta, 1961 to 2011. The record is -19.4 C (-2.9 F) in 1978, marked on the chart; the median year is -7.2 C (19.0 F).

Coldest night (TNn) at Agua Prieta by year
Year	Coldest night (TNn)
1961	-5.0 C (23.0 F)
1962	-12.8 C (9.0 F)
1963	-6.1 C (21.0 F)
1964	-12.2 C (10.0 F)
1965	-10.0 C (14.0 F)
1966	-10.0 C (14.0 F)
1967	-12.2 C (10.0 F)
1968	-12.2 C (10.0 F)
1969	-8.3 C (17.1 F)
1970	-10.0 C (14.0 F)
1971	-12.2 C (10.0 F)
1972	-10.0 C (14.0 F)
1973	-9.4 C (15.1 F)
1974	-10.0 C (14.0 F)
1975	-9.4 C (15.1 F)
1976	-10.0 C (14.0 F)
1977	-8.3 C (17.1 F)
1978	-19.4 C (-2.9 F)
1979	-8.9 C (16.0 F)
1980	-5.6 C (21.9 F)
1981	-7.2 C (19.0 F)
1982	-6.7 C (19.9 F)
1983	-6.7 C (19.9 F)
1984	-6.7 C (19.9 F)
1985	-5.0 C (23.0 F)
1986	-5.0 C (23.0 F)
1987	-7.2 C (19.0 F)
1988	-9.4 C (15.1 F)
1989	-8.3 C (17.1 F)
1990	-8.3 C (17.1 F)
1991	-5.0 C (23.0 F)
1992	-7.2 C (19.0 F)
1993	-5.0 C (23.0 F)
1994	-6.1 C (21.0 F)
1995	-4.4 C (24.1 F)
1996	-6.1 C (21.0 F)
1997	-7.2 C (19.0 F)
1998	-3.3 C (26.1 F)
2000	-6.1 C (21.0 F)
2001	-8.3 C (17.1 F)
2002	-7.2 C (19.0 F)
2003	-9.4 C (15.1 F)
2004	-5.6 C (21.9 F)
2005	-5.0 C (23.0 F)
2006	-5.6 C (21.9 F)
2007	-7.2 C (19.0 F)
2008	-4.4 C (24.1 F)
2009	-4.4 C (24.1 F)
2010	-6.1 C (21.0 F)
2011	-12.2 C (10.0 F)

Wettest day (Rx1day)

The wettest day of the year at Agua Prieta, 1961 to 2011. The record is 69.9 mm (2.8 in) in 2010, marked on the chart; the median year is 41.9 mm (1.6 in).

Wettest day (Rx1day) at Agua Prieta by year
Year	Wettest day (Rx1day)
1961	36.8 mm (1.4 in)
1962	23.9 mm (0.9 in)
1963	43.9 mm (1.7 in)
1964	45.0 mm (1.8 in)
1965	30.0 mm (1.2 in)
1966	65.8 mm (2.6 in)
1967	43.4 mm (1.7 in)
1968	26.9 mm (1.1 in)
1969	21.8 mm (0.9 in)
1970	40.4 mm (1.6 in)
1971	43.9 mm (1.7 in)
1972	22.4 mm (0.9 in)
1973	8.9 mm (0.35 in)
1974	34.8 mm (1.4 in)
1975	31.8 mm (1.3 in)
1976	34.3 mm (1.4 in)
1977	53.8 mm (2.1 in)
1978	35.8 mm (1.4 in)
1979	48.0 mm (1.9 in)
1980	43.2 mm (1.7 in)
1981	35.3 mm (1.4 in)
1982	31.8 mm (1.3 in)
1983	49.8 mm (2.0 in)
1984	49.8 mm (2.0 in)
1985	47.8 mm (1.9 in)
1986	36.8 mm (1.4 in)
1987	22.9 mm (0.9 in)
1988	64.8 mm (2.6 in)
1989	55.9 mm (2.2 in)
1990	45.0 mm (1.8 in)
1991	59.9 mm (2.4 in)
1992	32.3 mm (1.3 in)
1993	31.8 mm (1.3 in)
1994	54.9 mm (2.2 in)
1995	40.9 mm (1.6 in)
1996	34.8 mm (1.4 in)
1997	24.9 mm (1.0 in)
1998	52.8 mm (2.1 in)
2000	55.4 mm (2.2 in)
2001	66.5 mm (2.6 in)
2002	46.5 mm (1.8 in)
2003	17.3 mm (0.7 in)
2004	42.9 mm (1.7 in)
2005	39.4 mm (1.6 in)
2006	33.3 mm (1.3 in)
2007	47.8 mm (1.9 in)
2008	45.0 mm (1.8 in)
2009	22.9 mm (0.9 in)
2010	69.9 mm (2.8 in)
2011	49.8 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Agua Prieta, 1961 to 2011. The record is 135.8 mm (5.3 in) in 1977, marked on the chart; the median year is 61.9 mm (2.4 in).

Wettest five days (Rx5day) at Agua Prieta by year
Year	Wettest five days (Rx5day)
1961	50.1 mm (2.0 in)
1962	47.2 mm (1.9 in)
1963	55.8 mm (2.2 in)
1964	83.6 mm (3.3 in)
1965	48.4 mm (1.9 in)
1966	109.4 mm (4.3 in)
1967	86.8 mm (3.4 in)
1968	49.0 mm (1.9 in)
1969	51.6 mm (2.0 in)
1970	70.9 mm (2.8 in)
1971	59.4 mm (2.3 in)
1972	22.4 mm (0.9 in)
1973	8.9 mm (0.35 in)
1974	60.2 mm (2.4 in)
1975	38.9 mm (1.5 in)
1976	49.8 mm (2.0 in)
1977	135.8 mm (5.3 in)
1978	51.8 mm (2.0 in)
1979	80.8 mm (3.2 in)
1980	45.2 mm (1.8 in)
1981	66.1 mm (2.6 in)
1982	37.9 mm (1.5 in)
1983	132.0 mm (5.2 in)
1984	87.9 mm (3.5 in)
1985	62.8 mm (2.5 in)
1986	56.7 mm (2.2 in)
1987	33.9 mm (1.3 in)
1988	108.0 mm (4.3 in)
1989	77.7 mm (3.1 in)
1990	83.9 mm (3.3 in)
1991	59.9 mm (2.4 in)
1992	61.0 mm (2.4 in)
1993	51.1 mm (2.0 in)
1994	74.7 mm (2.9 in)
1995	63.3 mm (2.5 in)
1996	70.9 mm (2.8 in)
1997	36.1 mm (1.4 in)
1998	90.1 mm (3.5 in)
2000	71.2 mm (2.8 in)
2001	78.0 mm (3.1 in)
2002	73.5 mm (2.9 in)
2003	30.0 mm (1.2 in)
2004	42.9 mm (1.7 in)
2005	70.2 mm (2.8 in)
2006	65.1 mm (2.6 in)
2007	78.6 mm (3.1 in)
2008	45.0 mm (1.8 in)
2009	36.9 mm (1.5 in)
2010	77.8 mm (3.1 in)
2011	80.3 mm (3.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Agua Prieta, 1961 to 2011. The record is 178 days in 2011, marked on the chart; the median year is 63 days.

Longest dry spell (CDD) at Agua Prieta by year
Year	Longest dry spell (CDD)
1961	134 days
1962	63 days
1963	31 days
1964	96 days
1965	81 days
1966	73 days
1967	55 days
1968	80 days
1969	61 days
1970	86 days
1971	66 days
1972	150 days
1973	48 days
1974	172 days
1975	85 days
1976	51 days
1977	63 days
1978	50 days
1979	56 days
1980	60 days
1981	53 days
1982	50 days
1983	80 days
1984	78 days
1985	42 days
1986	40 days
1987	50 days
1988	67 days
1989	83 days
1990	38 days
1991	51 days
1992	36 days
1993	49 days
1994	53 days
1995	86 days
1996	132 days
1997	42 days
1998	44 days
2000	55 days
2001	38 days
2002	162 days
2003	118 days
2004	71 days
2005	49 days
2006	130 days
2007	58 days
2008	128 days
2009	72 days
2010	62 days
2011	178 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

36 years with a frost

Across 36 years with a frost, the median last spring frost at Agua Prieta falls on 3 April and the median first autumn frost on 5 November, which leaves a median of 220 days between them.

Fitted over all years, the growing season changes by +18.3 days per decade at this station.

Frost dates and growing season at Agua Prieta
Measure	Median, all years	Earliest period	Recent period (1970 to 2007)	Recent against earliest	Fitted trend
Last spring frost	3 April	n/a	28 March	n/a	-13.2 days per decade
First autumn frost	5 November	n/a	5 November	n/a	+5.1 days per decade
Growing days	220 days	n/a	229 days	n/a	+18.3 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

43 years, 1961 to 2011

A day with at least 41.2 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 74.8 mm (2.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Agua Prieta: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	41.2 mm (1.6 in)
5 years	52.5 mm (2.1 in)
10 years	59.0 mm (2.3 in)
25 years	66.1 mm (2.6 in)
50 years	70.7 mm (2.8 in)	Longer than the 43 years of record
100 years	74.8 mm (2.9 in)	Longer than the 43 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, 43 years of values from 1961 to 2011.

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: 69.9 mm (2.8 in) in 2010; 66.5 mm (2.6 in) in 2001; 65.8 mm (2.6 in) in 1966.

Download the Data

Data for Agua Prieta standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Agua Prieta 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 2026-10-17 (17 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).