San Jose Weather Records (MXN00016111)

Record envelope, standing records and threshold days for San Jose (MXN00016111), Mexico, with 57 years of record.

Key Facts for San Jose

San Jose (MXN00016111) is a weather station in Mexico at 19.90 latitude and -100.32 longitude, 2,043 m (6,702 ft) above sea level.
The station reports from 1955 to 2011, 57 years of record.
1,464 records set at San Jose still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
San Jose tied a daily record low minimum temperature of 3.9 C (39.0 F) on 31 October 2011.

About the Station

Location: Mexico, 19.90 latitude, -100.32 longitude.
Elevation: 2,043 m (6,702 ft).
Period of record: 1955 to 2011, 57 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 San Jose. 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 San Jose, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	32.8 C (91.0 F)	-4.4 C (24.1 F)	n/a	n/a
Feb	32.8 C (91.0 F)	-3.3 C (26.1 F)	n/a	n/a
Mar	36.7 C (98.1 F)	-3.3 C (26.1 F)	n/a	n/a
Apr	38.9 C (102.0 F)	-1.1 C (30.0 F)	n/a	n/a
May	38.9 C (102.0 F)	3.9 C (39.0 F)	n/a	n/a
Jun	35.6 C (96.1 F)	6.7 C (44.1 F)	n/a	n/a
Jul	33.9 C (93.0 F)	5.6 C (42.1 F)	n/a	n/a
Aug	31.7 C (89.1 F)	5.6 C (42.1 F)	n/a	n/a
Sep	31.7 C (89.1 F)	1.7 C (35.1 F)	n/a	n/a
Oct	35.0 C (95.0 F)	0.0 C (32.0 F)	n/a	n/a
Nov	35.0 C (95.0 F)	-2.2 C (28.0 F)	n/a	n/a
Dec	31.7 C (89.1 F)	-6.1 C (21.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Jose still stand. 2000 holds the most, with 74.

Standing records at San Jose by the year they were set
Year set	Standing records
1955	23
1956	41
1957	40
1958	41
1959	14
1960	22
1961	32
1962	13
1963	26
1964	23
1965	59
1966	52
1967	24
1968	43
1969	6
1970	38
1971	21
1972	22
1973	62
1974	61
1975	16
1976	33
1977	32
1978	32
1979	24
1980	26
1981	27
1982	39
1983	31
1984	20
1985	23
1986	19
1987	20
1988	34
1989	23
1990	15
1991	15
1992	34
1993	9
1994	5
1995	23
1996	9
1997	22
1998	23
1999	23
2000	74
2001	59
2002	1
2003	13
2004	5
2006	12
2007	7
2008	12
2009	7
2010	20
2011	14

All-Time Record Progression

3 new records

3 all-time records were set at San Jose between 7 November 1990 and 7 May 1998. Each dot is a new record.

When San Jose set new all-time records
Date	Kind	Detail
1990-11-07	Record daily precipitation	Record daily precipitation 78.0 mm (3.1 in)
1991-10-30	Record daily precipitation	Record daily precipitation 95.0 mm (3.7 in)
1998-05-07	Record high maximum temperature	Record high maximum temperature 38.9 C (102.0 F)

Wettest Day of Each Month

Oct: 95.0 mm (3.7 in)

The wettest day on record for each calendar month at San Jose. The most was 95.0 mm (3.7 in) on 30 October 1991.

Record daily precipitation for each month at San Jose
Month	Record daily precipitation (mm)	Date
Jan	44.5 mm (1.8 in)	24 January 1980
Feb	69.9 mm (2.8 in)	4 February 2010
Mar	26.9 mm (1.1 in)	3 March 2001
Apr	34.8 mm (1.4 in)	16 April 1959
May	47.0 mm (1.9 in)	1 May 1956
Jun	54.6 mm (2.1 in)	13 June 1971
Jul	61.0 mm (2.4 in)	1 July 1955
Aug	59.4 mm (2.3 in)	21 August 1995
Sep	69.9 mm (2.8 in)	12 September 2009
Oct	95.0 mm (3.7 in)	30 October 1991
Nov	78.0 mm (3.1 in)	7 November 1990
Dec	23.9 mm (0.9 in)	3 December 1979

Period of Record Coverage

1955 to 2011

56 years of record at San Jose, 1955 to 2011. 5 years have data for under 90 percent of days and are left out of rankings: 1955, 1969, 1996, 2004, 2011.

Days with data per year at San Jose
Year	Days with data	Share of year	Complete
1955	199	55%	No
1956	335	92%	Yes
1957	365	100%	Yes
1958	345	95%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	363	99%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	364	100%	Yes
1968	335	92%	Yes
1969	196	54%	No
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	363	99%	Yes
1980	365	100%	Yes
1981	365	100%	Yes
1982	335	92%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	365	100%	Yes
1989	364	100%	Yes
1990	333	91%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	363	99%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	215	59%	No
1997	364	100%	Yes
1998	365	100%	Yes
1999	363	99%	Yes
2000	335	92%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	91	25%	No
2006	353	97%	Yes
2007	364	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	364	100%	Yes
2011	304	83%	No

Latest Records

Latest records at San Jose
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 October 2011	San Jose, MX	daily low min (Tie)	3.9 C (39.0 F)	tie	28 years	3 of 100 (Routine)
30 October 2011	San Jose, MX	daily low min	1.7 C (35.1 F)	2.2 C (4.0 F)	24 years	20 of 100 (Routine)
29 October 2011	San Jose, MX	daily low min (Tie)	1.7 C (35.1 F)	tie	28 years	3 of 100 (Routine)
28 October 2011	San Jose, MX	daily low min (Tie)	1.7 C (35.1 F)	tie	12 years	2 of 100 (Routine)
27 October 2011	San Jose, MX	daily low min (Tie)	1.7 C (35.1 F)	tie	12 years	2 of 100 (Routine)
26 October 2011	San Jose, MX	daily low min	0.6 C (33.1 F)	1.1 C (2.0 F)	4 years	10 of 100 (Routine)
25 October 2011	San Jose, MX	monthly low min	0.0 C (32.0 F)	0.6 C (1.1 F)	0 years	17 of 100 (Routine)
24 October 2011	San Jose, MX	monthly low min (Tie)	0.6 C (33.1 F)	tie	0 years	3 of 100 (Routine)
23 October 2011	San Jose, MX	monthly low min	0.6 C (33.1 F)	1.1 C (2.0 F)	54 years	35 of 100 (Notable)
22 October 2011	San Jose, MX	daily low min (Tie)	3.9 C (39.0 F)	tie	56 years	5 of 100 (Routine)
21 October 2011	San Jose, MX	daily low min	2.8 C (37.0 F)	1.1 C (2.0 F)	56 years	25 of 100 (Routine)
26 September 2011	San Jose, MX	daily high max	30.6 C (87.1 F)	0.6 C (1.1 F)	24 years	14 of 100 (Routine)
11 September 2011	San Jose, MX	daily low min	6.7 C (44.1 F)	1.1 C (2.0 F)	22 years	16 of 100 (Routine)
10 September 2011	San Jose, MX	daily low min (Tie)	3.9 C (39.0 F)	tie	22 years	2 of 100 (Routine)
9 September 2011	San Jose, MX	monthly low min (Tie)	1.7 C (35.1 F)	tie	31 years	6 of 100 (Routine)
8 September 2011	San Jose, MX	daily low min	2.8 C (37.0 F)	3.9 C (7.0 F)	10 years	26 of 100 (Routine)
26 August 2011	San Jose, MX	monthly high max (Tie)	31.7 C (89.1 F)	tie	29 years	5 of 100 (Routine)
23 August 2011	San Jose, MX	daily rain	45.0 mm (1.8 in)	5.6 mm (0.22 in)	52 years	25 of 100 (Routine)
9 August 2011	San Jose, MX	daily high max (Tie)	30.6 C (87.1 F)	tie	16 years	2 of 100 (Routine)
24 July 2011	San Jose, MX	daily low min (Tie)	8.9 C (48.0 F)	tie	12 years	2 of 100 (Routine)

Climate Trend

43 complete years, 1957 to 2010

One stripe for each of 43 complete years at San Jose, 1957 to 2010. Blue stripes are years cooler than the station's own mean of 17.4 C (63.3 F); red stripes are warmer. The coolest year was 1970, at 16.4 C (61.5 F), and the warmest was 1973, at 18.4 C (65.0 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at San Jose as warming stripes, 1957 to 2010
Year	Annual mean temperature	Difference from the station mean
1957	17.3 C	-0.08 C
1959	17.3 C	-0.09 C
1960	17.4 C	-0.05 C
1961	17.3 C	-0.15 C
1962	17.6 C	+0.19 C
1963	17.6 C	+0.22 C
1964	17.5 C	+0.07 C
1965	17.2 C	-0.22 C
1966	17.0 C	-0.44 C
1967	16.8 C	-0.61 C
1970	16.4 C	-1.02 C
1971	17.0 C	-0.38 C
1972	17.9 C	+0.48 C
1973	18.4 C	+0.95 C
1974	18.4 C	+0.94 C
1975	17.4 C	-0.02 C
1976	17.2 C	-0.25 C
1977	17.4 C	-0.03 C
1978	17.5 C	+0.06 C
1980	17.7 C	+0.26 C
1981	17.8 C	+0.40 C
1983	17.8 C	+0.42 C
1984	17.4 C	-0.02 C
1985	17.1 C	-0.34 C
1986	17.4 C	-0.03 C
1987	17.4 C	0.00 C
1988	17.6 C	+0.20 C
1989	17.4 C	+0.03 C
1991	17.3 C	-0.11 C
1992	17.0 C	-0.42 C
1993	17.7 C	+0.28 C
1994	18.1 C	+0.69 C
1995	18.2 C	+0.82 C
1997	17.4 C	0.00 C
1998	18.2 C	+0.77 C
1999	16.4 C	-0.97 C
2001	18.3 C	+0.90 C
2002	17.4 C	-0.02 C
2003	16.9 C	-0.53 C
2007	17.1 C	-0.31 C
2008	16.9 C	-0.50 C
2009	17.4 C	-0.04 C
2010	16.6 C	-0.86 C

The fitted trend in annual mean temperature here over 1957 to 2010 is -0.01 C (-0.11 to 0.09) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.02 F (-0.20 to 0.15) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at San Jose
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.01 C (-0.11 to 0.09) per decade	-0.02 F (-0.20 to 0.15) per decade	1957 to 2010	43	Not clearly different from zero
Mean daily maximum	0.12 C (-0.04 to 0.28) per decade	0.2 F (-0.1 to 0.5) per decade	1957 to 2010	43	Not clearly different from zero
Mean daily minimum	-0.15 C (-0.29 to 0.00) per decade	-0.27 F (-0.52 to -0.01) per decade	1957 to 2010	43	Fall

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

1955 to 2011

Yearly extremes at San Jose: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	1998	35.0 C (95.0 F)	56
Coldest night (TNn)	-6.1 C (21.0 F)	1957	0.0 C (32.0 F)	56
Wettest day (Rx1day)	95.0 mm (3.7 in)	1991	44.8 mm (1.8 in)	56
Wettest five days (Rx5day)	156.5 mm (6.2 in)	2010	92.3 mm (3.6 in)	56
Longest dry spell (CDD)	133 days	1999	63 days	56

Hottest day (TXx)

The hottest day of the year at San Jose, 1955 to 2011. The record is 38.9 C (102.0 F) in 1998, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at San Jose by year
Year	Hottest day (TXx)
1955	32.2 C (90.0 F)
1956	33.9 C (93.0 F)
1957	33.3 C (91.9 F)
1958	35.0 C (95.0 F)
1959	32.8 C (91.0 F)
1960	33.9 C (93.0 F)
1961	35.0 C (95.0 F)
1962	34.4 C (93.9 F)
1963	35.0 C (95.0 F)
1964	36.1 C (97.0 F)
1965	33.9 C (93.0 F)
1966	37.2 C (99.0 F)
1967	37.8 C (100.0 F)
1968	31.7 C (89.1 F)
1969	30.0 C (86.0 F)
1970	35.0 C (95.0 F)
1971	33.9 C (93.0 F)
1972	36.7 C (98.1 F)
1973	35.6 C (96.1 F)
1974	35.6 C (96.1 F)
1975	35.6 C (96.1 F)
1976	32.8 C (91.0 F)
1977	35.0 C (95.0 F)
1978	35.6 C (96.1 F)
1979	35.0 C (95.0 F)
1980	35.6 C (96.1 F)
1981	35.0 C (95.0 F)
1982	35.6 C (96.1 F)
1983	35.6 C (96.1 F)
1984	33.9 C (93.0 F)
1985	35.0 C (95.0 F)
1986	35.6 C (96.1 F)
1987	33.9 C (93.0 F)
1988	35.6 C (96.1 F)
1989	35.6 C (96.1 F)
1990	35.0 C (95.0 F)
1991	35.0 C (95.0 F)
1992	35.6 C (96.1 F)
1993	35.6 C (96.1 F)
1994	35.0 C (95.0 F)
1995	35.0 C (95.0 F)
1996	30.6 C (87.1 F)
1997	35.6 C (96.1 F)
1998	38.9 C (102.0 F)
1999	32.8 C (91.0 F)
2000	35.0 C (95.0 F)
2001	35.6 C (96.1 F)
2002	35.0 C (95.0 F)
2003	35.0 C (95.0 F)
2004	31.7 C (89.1 F)
2006	31.7 C (89.1 F)
2007	31.7 C (89.1 F)
2008	38.9 C (102.0 F)
2009	32.8 C (91.0 F)
2010	33.9 C (93.0 F)
2011	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at San Jose, 1955 to 2011. The record is -6.1 C (21.0 F) in 1957, marked on the chart; the median year is 0.0 C (32.0 F).

Coldest night (TNn) at San Jose by year
Year	Coldest night (TNn)
1955	0.0 C (32.0 F)
1956	-3.3 C (26.1 F)
1957	-6.1 C (21.0 F)
1958	-1.1 C (30.0 F)
1959	-2.2 C (28.0 F)
1960	-2.2 C (28.0 F)
1961	-3.3 C (26.1 F)
1962	-0.6 C (30.9 F)
1963	0.0 C (32.0 F)
1964	0.6 C (33.1 F)
1965	-0.6 C (30.9 F)
1966	0.0 C (32.0 F)
1967	0.0 C (32.0 F)
1968	0.0 C (32.0 F)
1969	0.6 C (33.1 F)
1970	0.0 C (32.0 F)
1971	-4.4 C (24.1 F)
1972	0.6 C (33.1 F)
1973	0.0 C (32.0 F)
1974	-2.2 C (28.0 F)
1975	-3.3 C (26.1 F)
1976	-3.3 C (26.1 F)
1977	0.6 C (33.1 F)
1978	0.6 C (33.1 F)
1979	0.0 C (32.0 F)
1980	-1.1 C (30.0 F)
1981	-0.6 C (30.9 F)
1982	0.0 C (32.0 F)
1983	0.0 C (32.0 F)
1984	1.7 C (35.1 F)
1985	0.6 C (33.1 F)
1986	0.0 C (32.0 F)
1987	0.0 C (32.0 F)
1988	-1.1 C (30.0 F)
1989	-6.1 C (21.0 F)
1990	0.6 C (33.1 F)
1991	-1.1 C (30.0 F)
1992	0.6 C (33.1 F)
1993	0.0 C (32.0 F)
1994	1.7 C (35.1 F)
1995	1.7 C (35.1 F)
1996	0.0 C (32.0 F)
1997	-2.2 C (28.0 F)
1998	-2.2 C (28.0 F)
1999	-1.1 C (30.0 F)
2000	-1.1 C (30.0 F)
2001	0.6 C (33.1 F)
2002	0.6 C (33.1 F)
2003	-1.1 C (30.0 F)
2004	-3.3 C (26.1 F)
2006	-5.0 C (23.0 F)
2007	-1.1 C (30.0 F)
2008	-2.2 C (28.0 F)
2009	-1.1 C (30.0 F)
2010	0.0 C (32.0 F)
2011	0.0 C (32.0 F)

Wettest day (Rx1day)

The wettest day of the year at San Jose, 1955 to 2011. The record is 95.0 mm (3.7 in) in 1991, marked on the chart; the median year is 44.8 mm (1.8 in).

Wettest day (Rx1day) at San Jose by year
Year	Wettest day (Rx1day)
1955	61.0 mm (2.4 in)
1956	47.0 mm (1.9 in)
1957	47.8 mm (1.9 in)
1958	40.4 mm (1.6 in)
1959	39.6 mm (1.6 in)
1960	24.9 mm (1.0 in)
1961	48.8 mm (1.9 in)
1962	34.3 mm (1.4 in)
1963	59.9 mm (2.4 in)
1964	34.5 mm (1.4 in)
1965	40.4 mm (1.6 in)
1966	43.4 mm (1.7 in)
1967	47.0 mm (1.9 in)
1968	39.9 mm (1.6 in)
1969	28.4 mm (1.1 in)
1970	45.0 mm (1.8 in)
1971	54.6 mm (2.1 in)
1972	40.4 mm (1.6 in)
1973	46.0 mm (1.8 in)
1974	40.4 mm (1.6 in)
1975	35.3 mm (1.4 in)
1976	61.0 mm (2.4 in)
1977	36.3 mm (1.4 in)
1978	59.9 mm (2.4 in)
1979	26.9 mm (1.1 in)
1980	44.5 mm (1.8 in)
1981	53.3 mm (2.1 in)
1982	43.9 mm (1.7 in)
1983	41.9 mm (1.6 in)
1984	39.9 mm (1.6 in)
1985	50.5 mm (2.0 in)
1986	59.9 mm (2.4 in)
1987	39.9 mm (1.6 in)
1988	59.9 mm (2.4 in)
1989	41.9 mm (1.6 in)
1990	78.0 mm (3.1 in)
1991	95.0 mm (3.7 in)
1992	47.0 mm (1.9 in)
1993	54.9 mm (2.2 in)
1994	35.8 mm (1.4 in)
1995	59.4 mm (2.3 in)
1996	43.9 mm (1.7 in)
1997	37.8 mm (1.5 in)
1998	46.0 mm (1.8 in)
1999	50.8 mm (2.0 in)
2000	31.8 mm (1.3 in)
2001	39.9 mm (1.6 in)
2002	49.8 mm (2.0 in)
2003	37.8 mm (1.5 in)
2004	11.9 mm (0.5 in)
2006	54.9 mm (2.2 in)
2007	47.8 mm (1.9 in)
2008	35.8 mm (1.4 in)
2009	69.9 mm (2.8 in)
2010	69.9 mm (2.8 in)
2011	45.0 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Jose, 1955 to 2011. The record is 156.5 mm (6.2 in) in 2010, marked on the chart; the median year is 92.3 mm (3.6 in).

Wettest five days (Rx5day) at San Jose by year
Year	Wettest five days (Rx5day)
1955	97.1 mm (3.8 in)
1956	72.4 mm (2.9 in)
1957	86.9 mm (3.4 in)
1958	93.0 mm (3.7 in)
1959	95.3 mm (3.8 in)
1960	58.9 mm (2.3 in)
1961	79.5 mm (3.1 in)
1962	79.1 mm (3.1 in)
1963	77.7 mm (3.1 in)
1964	64.8 mm (2.6 in)
1965	117.1 mm (4.6 in)
1966	100.3 mm (3.9 in)
1967	84.9 mm (3.3 in)
1968	70.5 mm (2.8 in)
1969	54.6 mm (2.1 in)
1970	93.6 mm (3.7 in)
1971	110.5 mm (4.4 in)
1972	65.5 mm (2.6 in)
1973	87.1 mm (3.4 in)
1974	78.0 mm (3.1 in)
1975	86.9 mm (3.4 in)
1976	89.7 mm (3.5 in)
1977	80.7 mm (3.2 in)
1978	135.6 mm (5.3 in)
1979	75.4 mm (3.0 in)
1980	137.5 mm (5.4 in)
1981	114.1 mm (4.5 in)
1982	62.7 mm (2.5 in)
1983	105.9 mm (4.2 in)
1984	97.3 mm (3.8 in)
1985	100.6 mm (4.0 in)
1986	113.3 mm (4.5 in)
1987	91.5 mm (3.6 in)
1988	93.2 mm (3.7 in)
1989	67.7 mm (2.7 in)
1990	87.4 mm (3.4 in)
1991	110.7 mm (4.4 in)
1992	145.5 mm (5.7 in)
1993	139.5 mm (5.5 in)
1994	104.4 mm (4.1 in)
1995	106.7 mm (4.2 in)
1996	98.6 mm (3.9 in)
1997	65.2 mm (2.6 in)
1998	77.3 mm (3.0 in)
1999	150.1 mm (5.9 in)
2000	74.2 mm (2.9 in)
2001	76.0 mm (3.0 in)
2002	115.1 mm (4.5 in)
2003	97.4 mm (3.8 in)
2004	15.5 mm (0.6 in)
2006	79.0 mm (3.1 in)
2007	106.9 mm (4.2 in)
2008	96.8 mm (3.8 in)
2009	107.0 mm (4.2 in)
2010	156.5 mm (6.2 in)
2011	76.5 mm (3.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Jose, 1955 to 2011. The record is 133 days in 1999, marked on the chart; the median year is 63 days.

Longest dry spell (CDD) at San Jose by year
Year	Longest dry spell (CDD)
1955	39 days
1956	110 days
1957	77 days
1958	87 days
1959	67 days
1960	77 days
1961	50 days
1962	86 days
1963	79 days
1964	46 days
1965	39 days
1966	34 days
1967	51 days
1968	41 days
1969	41 days
1970	121 days
1971	65 days
1972	34 days
1973	84 days
1974	86 days
1975	94 days
1976	37 days
1977	47 days
1978	48 days
1979	52 days
1980	37 days
1981	31 days
1982	43 days
1983	69 days
1984	44 days
1985	37 days
1986	71 days
1987	50 days
1988	41 days
1989	78 days
1990	34 days
1991	83 days
1992	60 days
1993	54 days
1994	60 days
1995	65 days
1996	39 days
1997	66 days
1998	81 days
1999	133 days
2000	91 days
2001	51 days
2002	56 days
2003	130 days
2004	38 days
2006	72 days
2007	69 days
2008	103 days
2009	93 days
2010	97 days
2011	105 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.

Rainfall Return Levels

51 years, 1956 to 2010

A day with at least 44.8 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 90.5 mm (3.6 in) of rain is expected about once in 100 years.

Rainfall return levels at San Jose: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.8 mm (1.8 in)
5 years	55.9 mm (2.2 in)
10 years	63.7 mm (2.5 in)
25 years	74.0 mm (2.9 in)
50 years	82.1 mm (3.2 in)
100 years	90.5 mm (3.6 in)	Longer than the 51 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, 51 years of values from 1956 to 2010.

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: 95.0 mm (3.7 in) in 1991; 78.0 mm (3.1 in) in 1990; 69.9 mm (2.8 in) in 2009.

Download the Data

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