Balcon Diablo Weather Records (MXN00021016)

Record envelope, standing records and threshold days for Balcon Diablo (MXN00021016), Mexico, with 67 years of record.

Key Facts for Balcon Diablo

Balcon Diablo (MXN00021016) is a weather station in Mexico at 18.88 latitude and -98.12 longitude, 2,120 m (6,955 ft) above sea level.
The station reports from 1943 to 2009, 67 years of record.
1,464 records set at Balcon Diablo still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Balcon Diablo tied a daily record low maximum temperature of 18.3 C (64.9 F) on 28 December 2009.

About the Station

Location: Mexico, 18.88 latitude, -98.12 longitude.
Elevation: 2,120 m (6,955 ft).
Period of record: 1943 to 2009, 67 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 Balcon Diablo. 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 Balcon Diablo, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	30.6 C (87.1 F)	-7.8 C (18.0 F)	n/a	n/a
Feb	31.7 C (89.1 F)	-5.0 C (23.0 F)	n/a	n/a
Mar	35.0 C (95.0 F)	-4.4 C (24.1 F)	n/a	n/a
Apr	35.0 C (95.0 F)	1.1 C (34.0 F)	n/a	n/a
May	35.6 C (96.1 F)	2.8 C (37.0 F)	n/a	n/a
Jun	32.8 C (91.0 F)	5.0 C (41.0 F)	n/a	n/a
Jul	35.0 C (95.0 F)	5.0 C (41.0 F)	n/a	n/a
Aug	30.0 C (86.0 F)	5.0 C (41.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	2.8 C (37.0 F)	n/a	n/a
Oct	30.6 C (87.1 F)	-0.6 C (30.9 F)	n/a	n/a
Nov	31.7 C (89.1 F)	-4.4 C (24.1 F)	n/a	n/a
Dec	30.6 C (87.1 F)	-8.3 C (17.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Balcon Diablo still stand. 1946 holds the most, with 139.

Standing records at Balcon Diablo by the year they were set
Year set	Standing records
1944	23
1945	27
1946	139
1947	102
1948	9
1949	14
1950	22
1951	20
1952	23
1953	21
1954	17
1955	26
1956	27
1957	18
1958	23
1959	16
1960	20
1961	18
1962	9
1963	10
1964	19
1965	18
1966	15
1967	24
1968	25
1969	11
1970	11
1971	13
1972	11
1973	14
1974	23
1975	23
1976	76
1977	73
1978	65
1979	54
1980	18
1981	9
1982	10
1983	11
1984	10
1985	8
1986	23
1987	22
1988	11
1989	13
1990	1
1991	15
1992	28
1993	9
1994	7
1995	4
1996	7
1997	16
1998	25
1999	17
2000	10
2001	18
2002	13
2003	7
2004	6
2005	7
2006	22
2007	28
2008	12
2009	18

All-Time Record Progression

1 new records

1 all-time records were set at Balcon Diablo between 10 September 1998 and 10 September 1998. Each dot is a new record.

Wettest Day of Each Month

Sep: 162.3 mm (6.4 in)

The wettest day on record for each calendar month at Balcon Diablo. The most was 162.3 mm (6.4 in) on 10 September 1998.

Record daily precipitation for each month at Balcon Diablo
Month	Record daily precipitation (mm)	Date
Jan	38.4 mm (1.5 in)	4 January 1969
Feb	23.4 mm (0.9 in)	3 February 2007
Mar	32.0 mm (1.3 in)	19 March 1997
Apr	48.3 mm (1.9 in)	16 April 1965
May	75.2 mm (3.0 in)	29 May 2000
Jun	77.5 mm (3.1 in)	19 June 1968
Jul	66.0 mm (2.6 in)	22 July 1966
Aug	110.0 mm (4.3 in)	15 August 1947
Sep	162.3 mm (6.4 in)	10 September 1998
Oct	59.9 mm (2.4 in)	6 October 2007
Nov	61.2 mm (2.4 in)	5 November 1991
Dec	73.2 mm (2.9 in)	6 December 1973

Period of Record Coverage

1943 to 2009

67 years of record at Balcon Diablo, 1943 to 2009. 6 years have data for under 90 percent of days and are left out of rankings: 1943, 1948, 1966, 1990, 1995, 1996.

Days with data per year at Balcon Diablo
Year	Days with data	Share of year	Complete
1943	31	8%	No
1944	366	100%	Yes
1945	364	100%	Yes
1946	364	100%	Yes
1947	365	100%	Yes
1948	183	50%	No
1949	365	100%	Yes
1950	334	92%	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	337	92%	Yes
1959	363	99%	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	273	75%	No
1967	365	100%	Yes
1968	366	100%	Yes
1969	364	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	365	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	336	92%	Yes
1989	335	92%	Yes
1990	92	25%	No
1991	365	100%	Yes
1992	360	98%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	303	83%	No
1996	305	83%	No
1997	364	100%	Yes
1998	350	96%	Yes
1999	365	100%	Yes
2000	344	94%	Yes
2001	336	92%	Yes
2002	363	99%	Yes
2003	365	100%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	364	100%	Yes
2008	365	100%	Yes
2009	359	98%	Yes

Latest Records

Latest records at Balcon Diablo
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 December 2009	Balcon Diablo, MX	daily low max (Tie)	18.3 C (64.9 F)	tie	8 years	2 of 100 (Routine)
23 December 2009	Balcon Diablo, MX	daily low max	16.7 C (62.1 F)	1.1 C (2.0 F)	40 years	22 of 100 (Routine)
22 December 2009	Balcon Diablo, MX	daily low max	16.1 C (61.0 F)	2.8 C (5.0 F)	48 years	31 of 100 (Routine)
20 December 2009	Balcon Diablo, MX	monthly low max	11.1 C (52.0 F)	1.1 C (2.0 F)	51 years	35 of 100 (Notable)
19 December 2009	Balcon Diablo, MX	daily high min	8.3 C (46.9 F)	0.5 C (0.9 F)	64 years	26 of 100 (Routine)
17 December 2009	Balcon Diablo, MX	daily high min (Tie)	10.0 C (50.0 F)	tie	30 years	3 of 100 (Routine)
2 December 2009	Balcon Diablo, MX	daily high min	11.1 C (52.0 F)	0.5 C (0.9 F)	23 years	13 of 100 (Routine)
2 December 2009	Balcon Diablo, MX	daily low max (Tie)	18.9 C (66.0 F)	tie	44 years	4 of 100 (Routine)
26 October 2009	Balcon Diablo, MX	daily low max	18.9 C (66.0 F)	1.1 C (2.0 F)	43 years	23 of 100 (Routine)
11 September 2009	Balcon Diablo, MX	daily low max	18.9 C (66.0 F)	1.1 C (2.0 F)	40 years	23 of 100 (Routine)
29 August 2009	Balcon Diablo, MX	daily rain	39.9 mm (1.6 in)	10.9 mm (0.4 in)	16 years	20 of 100 (Routine)
27 August 2009	Balcon Diablo, MX	daily high max (Tie)	27.2 C (81.0 F)	tie	60 years	6 of 100 (Routine)
11 August 2009	Balcon Diablo, MX	daily low min	7.2 C (45.0 F)	0.6 C (1.1 F)	48 years	23 of 100 (Routine)
8 August 2009	Balcon Diablo, MX	daily high max (Tie)	27.8 C (82.0 F)	tie	56 years	5 of 100 (Routine)
26 June 2009	Balcon Diablo, MX	daily low max	20.6 C (69.1 F)	1.1 C (2.0 F)	51 years	25 of 100 (Routine)
24 June 2009	Balcon Diablo, MX	daily low min	8.9 C (48.0 F)	1.1 C (2.0 F)	42 years	24 of 100 (Routine)
23 May 2009	Balcon Diablo, MX	daily low max (Tie)	21.7 C (71.1 F)	tie	44 years	4 of 100 (Routine)
22 May 2009	Balcon Diablo, MX	daily low max	20.6 C (69.1 F)	0.5 C (0.9 F)	59 years	25 of 100 (Routine)
18 May 2009	Balcon Diablo, MX	daily low max (Tie)	21.7 C (71.1 F)	tie	36 years	4 of 100 (Routine)
24 March 2009	Balcon Diablo, MX	daily rain	4.6 mm (0.18 in)	1.3 mm (0.05 in)	4 years	9 of 100 (Routine)

Climate Trend

56 complete years, 1944 to 2009

One stripe for each of 56 complete years at Balcon Diablo, 1944 to 2009. Blue stripes are years cooler than the station's own mean of 16.3 C (61.4 F); red stripes are warmer. The coolest year was 1974, at 15.5 C (59.8 F), and the warmest was 1977, at 18.4 C (65.0 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Balcon Diablo as warming stripes, 1944 to 2009
Year	Annual mean temperature	Difference from the station mean
1944	16.3 C	-0.01 C
1945	17.0 C	+0.67 C
1946	18.1 C	+1.72 C
1947	17.9 C	+1.53 C
1949	16.2 C	-0.09 C
1951	16.3 C	-0.08 C
1952	16.2 C	-0.15 C
1953	16.7 C	+0.38 C
1954	16.3 C	-0.06 C
1955	16.2 C	-0.17 C
1956	15.9 C	-0.41 C
1957	16.5 C	+0.15 C
1959	16.3 C	-0.08 C
1960	16.4 C	+0.05 C
1961	16.4 C	+0.07 C
1962	16.5 C	+0.15 C
1963	16.1 C	-0.26 C
1964	16.2 C	-0.15 C
1965	15.8 C	-0.54 C
1967	15.6 C	-0.72 C
1968	15.5 C	-0.79 C
1969	16.4 C	+0.02 C
1970	15.8 C	-0.50 C
1971	15.8 C	-0.57 C
1972	16.1 C	-0.26 C
1973	15.9 C	-0.47 C
1974	15.5 C	-0.86 C
1975	17.4 C	+1.08 C
1976	18.1 C	+1.81 C
1977	18.4 C	+2.02 C
1978	18.3 C	+1.96 C
1979	17.5 C	+1.20 C
1980	16.4 C	+0.06 C
1981	15.9 C	-0.40 C
1982	16.5 C	+0.16 C
1983	16.2 C	-0.17 C
1984	15.8 C	-0.55 C
1985	15.7 C	-0.68 C
1986	15.7 C	-0.63 C
1987	16.0 C	-0.31 C
1991	16.1 C	-0.23 C
1992	15.5 C	-0.86 C
1993	15.9 C	-0.47 C
1994	16.4 C	+0.07 C
1997	16.0 C	-0.32 C
1998	16.5 C	+0.21 C
1999	15.5 C	-0.81 C
2000	15.8 C	-0.57 C
2002	16.2 C	-0.18 C
2003	16.3 C	-0.01 C
2004	15.8 C	-0.51 C
2005	16.5 C	+0.16 C
2006	16.0 C	-0.31 C
2007	16.7 C	+0.38 C
2008	15.9 C	-0.42 C
2009	16.1 C	-0.22 C

The fitted trend in annual mean temperature here over 1944 to 2009 is -0.09 C (-0.19 to 0.01) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.16 F (-0.34 to 0.01) per decade. The slope is a straight line fitted to 56 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Balcon Diablo
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.09 C (-0.19 to 0.01) per decade	-0.16 F (-0.34 to 0.01) per decade	1944 to 2009	56	Not clearly different from zero
Mean daily maximum	-0.2 C (-0.3 to -0.1) per decade	-0.4 F (-0.6 to -0.2) per decade	1944 to 2009	56	Fall
Mean daily minimum	0.1 C (-0.1 to 0.2) per decade	0.1 F (-0.1 to 0.3) per decade	1944 to 2009	56	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

1943 to 2009

Yearly extremes at Balcon Diablo: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.6 C (96.1 F)	1946	31.1 C (88.0 F)	67
Coldest night (TNn)	-8.3 C (17.1 F)	1945	-2.2 C (28.0 F)	67
Wettest day (Rx1day)	162.3 mm (6.4 in)	1998	45.5 mm (1.8 in)	67
Wettest five days (Rx5day)	218.0 mm (8.6 in)	1998	87.1 mm (3.4 in)	67
Longest dry spell (CDD)	116 days	1996	70 days	67

Hottest day (TXx)

The hottest day of the year at Balcon Diablo, 1943 to 2009. The record is 35.6 C (96.1 F) in 1946, marked on the chart; the median year is 31.1 C (88.0 F).

Hottest day (TXx) at Balcon Diablo by year
Year	Hottest day (TXx)
1943	25.0 C (77.0 F)
1944	31.1 C (88.0 F)
1945	32.2 C (90.0 F)
1946	35.6 C (96.1 F)
1947	35.0 C (95.0 F)
1948	28.3 C (82.9 F)
1949	31.1 C (88.0 F)
1950	30.0 C (86.0 F)
1951	31.1 C (88.0 F)
1952	30.0 C (86.0 F)
1953	34.4 C (93.9 F)
1954	31.7 C (89.1 F)
1955	32.2 C (90.0 F)
1956	30.0 C (86.0 F)
1957	31.7 C (89.1 F)
1958	31.7 C (89.1 F)
1959	30.0 C (86.0 F)
1960	31.1 C (88.0 F)
1961	31.7 C (89.1 F)
1962	30.0 C (86.0 F)
1963	31.7 C (89.1 F)
1964	32.8 C (91.0 F)
1965	30.6 C (87.1 F)
1966	27.2 C (81.0 F)
1967	32.8 C (91.0 F)
1968	30.0 C (86.0 F)
1969	31.7 C (89.1 F)
1970	31.7 C (89.1 F)
1971	31.7 C (89.1 F)
1972	31.1 C (88.0 F)
1973	32.2 C (90.0 F)
1974	31.7 C (89.1 F)
1975	31.7 C (89.1 F)
1976	31.7 C (89.1 F)
1977	32.8 C (91.0 F)
1978	31.7 C (89.1 F)
1979	31.7 C (89.1 F)
1980	31.7 C (89.1 F)
1981	31.1 C (88.0 F)
1982	31.1 C (88.0 F)
1983	32.2 C (90.0 F)
1984	31.7 C (89.1 F)
1985	30.0 C (86.0 F)
1986	31.1 C (88.0 F)
1987	29.4 C (84.9 F)
1988	31.7 C (89.1 F)
1989	30.6 C (87.1 F)
1990	26.1 C (79.0 F)
1991	31.7 C (89.1 F)
1992	28.9 C (84.0 F)
1993	31.7 C (89.1 F)
1994	30.6 C (87.1 F)
1995	31.1 C (88.0 F)
1996	28.9 C (84.0 F)
1997	28.9 C (84.0 F)
1998	33.3 C (91.9 F)
1999	30.6 C (87.1 F)
2000	30.6 C (87.1 F)
2001	30.0 C (86.0 F)
2002	31.7 C (89.1 F)
2003	32.2 C (90.0 F)
2004	30.6 C (87.1 F)
2005	31.1 C (88.0 F)
2006	32.8 C (91.0 F)
2007	33.9 C (93.0 F)
2008	30.0 C (86.0 F)
2009	30.6 C (87.1 F)

Coldest night (TNn)

The coldest night of the year at Balcon Diablo, 1943 to 2009. The record is -8.3 C (17.1 F) in 1945, marked on the chart; the median year is -2.2 C (28.0 F).

Coldest night (TNn) at Balcon Diablo by year
Year	Coldest night (TNn)
1943	0.6 C (33.1 F)
1944	-5.0 C (23.0 F)
1945	-8.3 C (17.1 F)
1946	0.6 C (33.1 F)
1947	-3.3 C (26.1 F)
1948	2.2 C (36.0 F)
1949	-3.3 C (26.1 F)
1950	-3.9 C (25.0 F)
1951	-3.9 C (25.0 F)
1952	-1.1 C (30.0 F)
1953	-4.4 C (24.1 F)
1954	-3.9 C (25.0 F)
1955	-2.8 C (27.0 F)
1956	-7.8 C (18.0 F)
1957	-3.9 C (25.0 F)
1958	-1.7 C (28.9 F)
1959	-2.8 C (27.0 F)
1960	-4.4 C (24.1 F)
1961	-5.0 C (23.0 F)
1962	0.0 C (32.0 F)
1963	-3.3 C (26.1 F)
1964	0.0 C (32.0 F)
1965	0.0 C (32.0 F)
1966	-4.4 C (24.1 F)
1967	-3.3 C (26.1 F)
1968	-3.9 C (25.0 F)
1969	-1.1 C (30.0 F)
1970	-2.2 C (28.0 F)
1971	0.0 C (32.0 F)
1972	-3.3 C (26.1 F)
1973	-5.0 C (23.0 F)
1974	-2.2 C (28.0 F)
1975	-3.3 C (26.1 F)
1976	-3.3 C (26.1 F)
1977	1.7 C (35.1 F)
1978	0.0 C (32.0 F)
1979	-1.7 C (28.9 F)
1980	-2.2 C (28.0 F)
1981	-1.1 C (30.0 F)
1982	-3.3 C (26.1 F)
1983	-1.7 C (28.9 F)
1984	-3.9 C (25.0 F)
1985	0.0 C (32.0 F)
1986	-5.0 C (23.0 F)
1987	-3.3 C (26.1 F)
1988	-4.4 C (24.1 F)
1989	-4.4 C (24.1 F)
1990	-2.2 C (28.0 F)
1991	0.0 C (32.0 F)
1992	-1.1 C (30.0 F)
1993	0.0 C (32.0 F)
1994	0.6 C (33.1 F)
1995	-1.1 C (30.0 F)
1996	-3.3 C (26.1 F)
1997	-2.8 C (27.0 F)
1998	0.0 C (32.0 F)
1999	-3.3 C (26.1 F)
2000	-2.2 C (28.0 F)
2001	0.6 C (33.1 F)
2002	-4.4 C (24.1 F)
2003	-2.2 C (28.0 F)
2004	-1.1 C (30.0 F)
2005	0.6 C (33.1 F)
2006	-4.4 C (24.1 F)
2007	0.6 C (33.1 F)
2008	0.6 C (33.1 F)
2009	-2.2 C (28.0 F)

Wettest day (Rx1day)

The wettest day of the year at Balcon Diablo, 1943 to 2009. The record is 162.3 mm (6.4 in) in 1998, marked on the chart; the median year is 45.5 mm (1.8 in).

Wettest day (Rx1day) at Balcon Diablo by year
Year	Wettest day (Rx1day)
1943	9.1 mm (0.36 in)
1944	54.9 mm (2.2 in)
1945	52.6 mm (2.1 in)
1946	42.4 mm (1.7 in)
1947	110.0 mm (4.3 in)
1948	28.2 mm (1.1 in)
1949	33.8 mm (1.3 in)
1950	43.2 mm (1.7 in)
1951	73.2 mm (2.9 in)
1952	55.9 mm (2.2 in)
1953	37.6 mm (1.5 in)
1954	49.8 mm (2.0 in)
1955	54.9 mm (2.2 in)
1956	43.2 mm (1.7 in)
1957	49.8 mm (2.0 in)
1958	40.4 mm (1.6 in)
1959	31.0 mm (1.2 in)
1960	39.4 mm (1.6 in)
1961	42.7 mm (1.7 in)
1962	43.7 mm (1.7 in)
1963	51.3 mm (2.0 in)
1964	56.6 mm (2.2 in)
1965	57.2 mm (2.3 in)
1966	66.0 mm (2.6 in)
1967	56.9 mm (2.2 in)
1968	77.5 mm (3.1 in)
1969	59.7 mm (2.4 in)
1970	47.5 mm (1.9 in)
1971	41.7 mm (1.6 in)
1972	62.7 mm (2.5 in)
1973	73.2 mm (2.9 in)
1974	36.1 mm (1.4 in)
1975	37.3 mm (1.5 in)
1976	33.0 mm (1.3 in)
1977	47.5 mm (1.9 in)
1978	49.8 mm (2.0 in)
1979	53.1 mm (2.1 in)
1980	42.7 mm (1.7 in)
1981	43.2 mm (1.7 in)
1982	37.6 mm (1.5 in)
1983	35.6 mm (1.4 in)
1984	50.3 mm (2.0 in)
1985	27.4 mm (1.1 in)
1986	34.3 mm (1.4 in)
1987	37.8 mm (1.5 in)
1988	60.2 mm (2.4 in)
1989	46.7 mm (1.8 in)
1990	8.9 mm (0.35 in)
1991	61.2 mm (2.4 in)
1992	36.6 mm (1.4 in)
1993	43.7 mm (1.7 in)
1994	34.5 mm (1.4 in)
1995	47.2 mm (1.9 in)
1996	45.5 mm (1.8 in)
1997	43.4 mm (1.7 in)
1998	162.3 mm (6.4 in)
1999	58.7 mm (2.3 in)
2000	75.2 mm (3.0 in)
2001	54.6 mm (2.1 in)
2002	46.2 mm (1.8 in)
2003	37.1 mm (1.5 in)
2004	40.1 mm (1.6 in)
2005	27.9 mm (1.1 in)
2006	39.9 mm (1.6 in)
2007	59.9 mm (2.4 in)
2008	55.6 mm (2.2 in)
2009	39.9 mm (1.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Balcon Diablo, 1943 to 2009. The record is 218.0 mm (8.6 in) in 1998, marked on the chart; the median year is 87.1 mm (3.4 in).

Wettest five days (Rx5day) at Balcon Diablo by year
Year	Wettest five days (Rx5day)
1943	10.1 mm (0.4 in)
1944	129.9 mm (5.1 in)
1945	79.2 mm (3.1 in)
1946	90.1 mm (3.5 in)
1947	157.8 mm (6.2 in)
1948	65.3 mm (2.6 in)
1949	71.1 mm (2.8 in)
1950	71.0 mm (2.8 in)
1951	90.5 mm (3.6 in)
1952	124.0 mm (4.9 in)
1953	85.0 mm (3.3 in)
1954	102.7 mm (4.0 in)
1955	156.0 mm (6.1 in)
1956	107.8 mm (4.2 in)
1957	83.1 mm (3.3 in)
1958	95.6 mm (3.8 in)
1959	85.4 mm (3.4 in)
1960	80.1 mm (3.2 in)
1961	58.5 mm (2.3 in)
1962	63.2 mm (2.5 in)
1963	68.6 mm (2.7 in)
1964	87.2 mm (3.4 in)
1965	95.8 mm (3.8 in)
1966	106.9 mm (4.2 in)
1967	78.2 mm (3.1 in)
1968	182.0 mm (7.2 in)
1969	150.2 mm (5.9 in)
1970	87.2 mm (3.4 in)
1971	99.3 mm (3.9 in)
1972	150.7 mm (5.9 in)
1973	112.0 mm (4.4 in)
1974	83.8 mm (3.3 in)
1975	84.9 mm (3.3 in)
1976	78.0 mm (3.1 in)
1977	146.8 mm (5.8 in)
1978	110.5 mm (4.4 in)
1979	100.4 mm (4.0 in)
1980	87.1 mm (3.4 in)
1981	131.4 mm (5.2 in)
1982	65.8 mm (2.6 in)
1983	73.5 mm (2.9 in)
1984	108.7 mm (4.3 in)
1985	75.6 mm (3.0 in)
1986	72.2 mm (2.8 in)
1987	87.1 mm (3.4 in)
1988	113.6 mm (4.5 in)
1989	49.7 mm (2.0 in)
1990	8.9 mm (0.35 in)
1991	81.0 mm (3.2 in)
1992	67.3 mm (2.6 in)
1993	87.7 mm (3.5 in)
1994	82.8 mm (3.3 in)
1995	98.5 mm (3.9 in)
1996	54.9 mm (2.2 in)
1997	75.2 mm (3.0 in)
1998	218.0 mm (8.6 in)
1999	92.4 mm (3.6 in)
2000	97.3 mm (3.8 in)
2001	87.4 mm (3.4 in)
2002	72.7 mm (2.9 in)
2003	94.0 mm (3.7 in)
2004	82.8 mm (3.3 in)
2005	41.1 mm (1.6 in)
2006	94.6 mm (3.7 in)
2007	106.9 mm (4.2 in)
2008	83.8 mm (3.3 in)
2009	45.7 mm (1.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Balcon Diablo, 1943 to 2009. The record is 116 days in 1996, marked on the chart; the median year is 70 days.

Longest dry spell (CDD) at Balcon Diablo by year
Year	Longest dry spell (CDD)
1943	29 days
1944	56 days
1945	95 days
1946	90 days
1947	56 days
1948	26 days
1949	66 days
1950	69 days
1951	70 days
1952	61 days
1953	90 days
1954	42 days
1955	89 days
1956	47 days
1957	40 days
1958	59 days
1959	99 days
1960	74 days
1961	49 days
1962	101 days
1963	100 days
1964	57 days
1965	32 days
1966	51 days
1967	61 days
1968	33 days
1969	71 days
1970	74 days
1971	76 days
1972	40 days
1973	57 days
1974	45 days
1975	97 days
1976	93 days
1977	93 days
1978	32 days
1979	41 days
1980	72 days
1981	33 days
1982	62 days
1983	72 days
1984	70 days
1985	97 days
1986	62 days
1987	96 days
1988	70 days
1989	88 days
1990	31 days
1991	103 days
1992	49 days
1993	55 days
1994	96 days
1995	40 days
1996	116 days
1997	77 days
1998	63 days
1999	73 days
2000	103 days
2001	53 days
2002	56 days
2003	71 days
2004	80 days
2005	86 days
2006	83 days
2007	76 days
2008	102 days
2009	50 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

28 years with a frost

Across 28 years with a frost, the median last spring frost at Balcon Diablo falls on 5 February and the median first autumn frost on 3 December, which leaves a median of 306 days between them.

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

Frost dates and growing season at Balcon Diablo
Measure	Median, all years	Earliest period	Recent period (1944 to 2006)	Recent against earliest	Fitted trend
Last spring frost	5 February	n/a	5 February	n/a	-3.6 days per decade
First autumn frost	3 December	n/a	3 December	n/a	-2.2 days per decade
Growing days	306 days	n/a	306 days	n/a	+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

61 years, 1944 to 2009

A day with at least 45.5 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 124.0 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Balcon Diablo: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	45.5 mm (1.8 in)
5 years	59.4 mm (2.3 in)
10 years	71.0 mm (2.8 in)
25 years	88.9 mm (3.5 in)
50 years	105.1 mm (4.1 in)
100 years	124.0 mm (4.9 in)	Longer than the 61 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, 61 years of values from 1944 to 2009.

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: 162.3 mm (6.4 in) in 1998; 110.0 mm (4.3 in) in 1947; 77.5 mm (3.1 in) in 1968.

Download the Data

Data for Balcon Diablo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Balcon Diablo 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).