Ozuluama Weather Records (MXN00030122)

Record envelope, standing records and threshold days for Ozuluama (MXN00030122), Mexico, with 87 years of record.

Key Facts for Ozuluama

Ozuluama (MXN00030122) is a weather station in Mexico at 21.65 latitude and -97.85 longitude, 165 m (541 ft) above sea level.
The station reports from 1925 to 2011, 87 years of record.
1,464 records set at Ozuluama still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Ozuluama set a daily record precipitation of 33.8 mm (1.3 in) on 16 December 2011.

About the Station

Location: Mexico, 21.65 latitude, -97.85 longitude.
Elevation: 165 m (541 ft).
Period of record: 1925 to 2011, 87 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 Ozuluama. 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 Ozuluama, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	37.8 C (100.0 F)	1.1 C (34.0 F)	n/a	n/a
Feb	40.6 C (105.1 F)	3.9 C (39.0 F)	n/a	n/a
Mar	45.0 C (113.0 F)	5.0 C (41.0 F)	n/a	n/a
Apr	45.0 C (113.0 F)	8.9 C (48.0 F)	n/a	n/a
May	43.9 C (111.0 F)	8.9 C (48.0 F)	n/a	n/a
Jun	42.8 C (109.0 F)	11.7 C (53.1 F)	n/a	n/a
Jul	41.7 C (107.1 F)	10.0 C (50.0 F)	n/a	n/a
Aug	40.6 C (105.1 F)	15.0 C (59.0 F)	n/a	n/a
Sep	40.6 C (105.1 F)	10.6 C (51.1 F)	n/a	n/a
Oct	40.0 C (104.0 F)	5.0 C (41.0 F)	n/a	n/a
Nov	40.0 C (104.0 F)	2.8 C (37.0 F)	n/a	n/a
Dec	40.0 C (104.0 F)	0.6 C (33.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ozuluama still stand. 1953 holds the most, with 153.

Standing records at Ozuluama by the year they were set
Year set	Standing records
1925	7
1926	20
1927	26
1928	14
1929	23
1930	19
1931	19
1932	20
1933	19
1934	3
1935	7
1936	16
1937	17
1938	7
1939	20
1940	14
1941	4
1942	10
1943	4
1944	7
1945	5
1946	16
1947	19
1948	12
1949	13
1950	34
1951	87
1952	104
1953	153
1954	112
1955	122
1956	42
1957	51
1958	9
1959	14
1960	13
1961	77
1962	106
1963	28
1964	11
1965	6
1966	7
1967	14
1968	20
1969	7
1970	12
1971	11
1972	4
1973	18
1974	4
1975	3
1976	8
1978	1
1979	15
1980	20
1981	4
1982	4
1983	2

All-Time Record Progression

1 new records

1 all-time records were set at Ozuluama between 10 January 1967 and 10 January 1967. Each dot is a new record.

Wettest Day of Each Month

Oct: 264.9 mm (10.4 in)

The wettest day on record for each calendar month at Ozuluama. The most was 264.9 mm (10.4 in) on 12 October 1930.

Record daily precipitation for each month at Ozuluama
Month	Record daily precipitation (mm)	Date
Jan	119.9 mm (4.7 in)	21 January 1976
Feb	83.3 mm (3.3 in)	27 February 1949
Mar	39.9 mm (1.6 in)	22 March 1972
Apr	64.8 mm (2.6 in)	19 April 1952
May	159.8 mm (6.3 in)	14 May 1976
Jun	185.9 mm (7.3 in)	27 June 1973
Jul	220.0 mm (8.7 in)	5 July 1974
Aug	231.9 mm (9.1 in)	25 August 1946
Sep	244.3 mm (9.6 in)	14 September 1933
Oct	264.9 mm (10.4 in)	12 October 1930
Nov	77.0 mm (3.0 in)	5 November 1952
Dec	80.0 mm (3.1 in)	5 December 1981

Period of Record Coverage

1925 to 1983

58 years of record at Ozuluama, 1925 to 1983. 19 years have data for under 90 percent of days and are left out of rankings: 1925, 1936, 1937, 1948, 1950, 1951, 1957, 1958 and others.

Days with data per year at Ozuluama
Year	Days with data	Share of year	Complete
1925	136	37%	No
1926	357	98%	Yes
1927	357	98%	Yes
1928	354	97%	Yes
1929	355	97%	Yes
1930	346	95%	Yes
1931	349	96%	Yes
1932	354	97%	Yes
1933	359	98%	Yes
1934	361	99%	Yes
1935	351	96%	Yes
1936	324	89%	No
1937	323	88%	No
1938	336	92%	Yes
1939	331	91%	Yes
1940	335	92%	Yes
1941	345	95%	Yes
1942	337	92%	Yes
1943	347	95%	Yes
1944	347	95%	Yes
1945	347	95%	Yes
1946	342	94%	Yes
1947	331	91%	Yes
1948	322	88%	No
1949	330	90%	Yes
1950	288	79%	No
1951	291	80%	No
1952	357	98%	Yes
1953	359	98%	Yes
1954	354	97%	Yes
1955	346	95%	Yes
1956	342	93%	Yes
1957	209	57%	No
1958	327	90%	No
1959	353	97%	Yes
1960	345	94%	Yes
1961	322	88%	No
1962	262	72%	No
1963	362	99%	Yes
1964	138	38%	No
1965	357	98%	Yes
1966	240	66%	No
1967	359	98%	Yes
1968	349	95%	Yes
1969	355	97%	Yes
1970	358	98%	Yes
1971	362	99%	Yes
1972	348	95%	Yes
1973	363	99%	Yes
1974	357	98%	Yes
1975	354	97%	Yes
1976	297	81%	No
1978	92	25%	No
1979	179	49%	No
1980	297	81%	No
1981	149	41%	No
1982	174	48%	No
1983	180	49%	No

Latest Records

Latest records at Ozuluama
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 December 2011	Ozuluama, MX	daily rain	33.8 mm (1.3 in)	21.4 mm (0.8 in)	85 years	50 of 100 (Notable)
12 February 2011	Ozuluama, MX	daily rain (Tie)	1.8 mm (0.07 in)	tie	52 years	5 of 100 (Routine)
13 July 1983	Ozuluama, MX	monthly high min (Tie)	28.9 C (84.0 F)	tie	36 years	6 of 100 (Routine)
30 April 1983	Ozuluama, MX	daily low max (Tie)	22.8 C (73.0 F)	tie	20 years	2 of 100 (Routine)
4 April 1983	Ozuluama, MX	daily high min	25.6 C (78.1 F)	0.6 C (1.1 F)	25 years	13 of 100 (Routine)
3 April 1983	Ozuluama, MX	daily high min (Tie)	25.0 C (77.0 F)	tie	36 years	3 of 100 (Routine)
17 March 1983	Ozuluama, MX	daily low max (Tie)	17.8 C (64.0 F)	tie	22 years	2 of 100 (Routine)
6 March 1983	Ozuluama, MX	daily high min	21.7 C (71.1 F)	0.6 C (1.1 F)	56 years	22 of 100 (Routine)
12 February 1983	Ozuluama, MX	daily rain (Tie)	1.8 mm (0.07 in)	tie	24 years	3 of 100 (Routine)
18 January 1983	Ozuluama, MX	daily rain	13.0 mm (0.5 in)	9.2 mm (0.36 in)	16 years	17 of 100 (Routine)
8 December 1982	Ozuluama, MX	daily rain	19.6 mm (0.8 in)	10.2 mm (0.4 in)	40 years	20 of 100 (Routine)
6 December 1982	Ozuluama, MX	daily rain	20.6 mm (0.8 in)	6.1 mm (0.24 in)	8 years	12 of 100 (Routine)
3 December 1982	Ozuluama, MX	daily high min (Tie)	21.7 C (71.1 F)	tie	48 years	4 of 100 (Routine)
23 October 1982	Ozuluama, MX	daily low max	20.0 C (68.0 F)	3.9 C (7.0 F)	56 years	34 of 100 (Routine)
15 October 1982	Ozuluama, MX	daily low max	21.7 C (71.1 F)	0.5 C (0.9 F)	55 years	22 of 100 (Routine)
14 October 1982	Ozuluama, MX	daily low max	20.6 C (69.1 F)	1.1 C (2.0 F)	43 years	20 of 100 (Routine)
8 October 1982	Ozuluama, MX	daily high min (Tie)	25.0 C (77.0 F)	tie	43 years	4 of 100 (Routine)
31 March 1982	Ozuluama, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	40 years	4 of 100 (Routine)
27 February 1982	Ozuluama, MX	daily low max	15.0 C (59.0 F)	0.6 C (1.1 F)	54 years	22 of 100 (Routine)
5 December 1981	Ozuluama, MX	monthly rain	80.0 mm (3.1 in)	3.0 mm (0.12 in)	7 years	19 of 100 (Routine)

Climate Trend

39 complete years, 1926 to 1975

One stripe for each of 39 complete years at Ozuluama, 1926 to 1975. Blue stripes are years cooler than the station's own mean of 23.7 C (74.6 F); red stripes are warmer. The coolest year was 1952, at 21.6 C (70.9 F), and the warmest was 1933, at 24.9 C (76.9 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Ozuluama as warming stripes, 1926 to 1975
Year	Annual mean temperature	Difference from the station mean
1926	23.1 C	-0.54 C
1927	24.6 C	+0.88 C
1928	23.7 C	+0.04 C
1929	24.0 C	+0.28 C
1930	23.7 C	-0.01 C
1931	23.1 C	-0.60 C
1932	23.9 C	+0.27 C
1933	24.9 C	+1.27 C
1934	24.2 C	+0.57 C
1935	24.2 C	+0.48 C
1936	23.1 C	-0.53 C
1938	23.4 C	-0.25 C
1939	23.1 C	-0.58 C
1940	23.1 C	-0.60 C
1941	23.0 C	-0.72 C
1942	23.7 C	+0.07 C
1943	23.8 C	+0.08 C
1944	23.5 C	-0.15 C
1945	24.0 C	+0.33 C
1946	23.9 C	+0.20 C
1947	23.2 C	-0.47 C
1948	23.8 C	+0.12 C
1949	24.2 C	+0.48 C
1952	21.6 C	-2.08 C
1953	24.7 C	+1.07 C
1954	24.7 C	+1.01 C
1955	24.7 C	+1.03 C
1956	24.0 C	+0.31 C
1958	23.3 C	-0.37 C
1959	23.2 C	-0.52 C
1963	23.0 C	-0.69 C
1965	24.3 C	+0.67 C
1967	24.3 C	+0.62 C
1969	23.1 C	-0.56 C
1970	22.8 C	-0.87 C
1971	23.8 C	+0.09 C
1973	23.6 C	-0.03 C
1974	23.5 C	-0.22 C
1975	23.6 C	-0.07 C

The fitted trend in annual mean temperature here over 1926 to 1975 is -0.04 C (-0.19 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.3 to 0.2) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ozuluama
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.04 C (-0.19 to 0.10) per decade	-0.1 F (-0.3 to 0.2) per decade	1926 to 1975	39	Not clearly different from zero
Mean daily maximum	0.4 C (-0.1 to 0.9) per decade	0.8 F (-0.1 to 1.6) per decade	1926 to 1975	39	Not clearly different from zero
Mean daily minimum	-0.5 C (-0.9 to -0.1) per decade	-0.9 F (-1.6 to -0.2) per decade	1926 to 1975	39	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

1925 to 2011

Yearly extremes at Ozuluama: 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)	1953	35.9 C (96.5 F)	58
Coldest night (TNn)	0.6 C (33.1 F)	1939	5.6 C (42.1 F)	58
Wettest day (Rx1day)	264.9 mm (10.4 in)	1930	119.9 mm (4.7 in)	59
Wettest five days (Rx5day)	620.8 mm (24.4 in)	1944	204.9 mm (8.1 in)	59
Longest dry spell (CDD)	90 days	1945	37 days	59

Hottest day (TXx)

The hottest day of the year at Ozuluama, 1925 to 2011. The record is 45.0 C (113.0 F) in 1953, marked on the chart; the median year is 35.9 C (96.5 F).

Hottest day (TXx) at Ozuluama by year
Year	Hottest day (TXx)
1925	30.6 C (87.1 F)
1926	33.3 C (91.9 F)
1927	35.0 C (95.0 F)
1928	37.8 C (100.0 F)
1929	36.7 C (98.1 F)
1930	36.1 C (97.0 F)
1931	33.3 C (91.9 F)
1932	37.2 C (99.0 F)
1933	36.1 C (97.0 F)
1934	35.6 C (96.1 F)
1935	36.7 C (98.1 F)
1936	33.3 C (91.9 F)
1937	36.7 C (98.1 F)
1938	32.8 C (91.0 F)
1939	33.9 C (93.0 F)
1940	35.0 C (95.0 F)
1941	33.9 C (93.0 F)
1942	35.0 C (95.0 F)
1943	33.9 C (93.0 F)
1944	35.0 C (95.0 F)
1945	36.7 C (98.1 F)
1946	36.7 C (98.1 F)
1947	33.9 C (93.0 F)
1948	35.6 C (96.1 F)
1949	35.6 C (96.1 F)
1950	35.6 C (96.1 F)
1951	30.6 C (87.1 F)
1952	40.6 C (105.1 F)
1953	45.0 C (113.0 F)
1954	45.0 C (113.0 F)
1955	43.9 C (111.0 F)
1956	37.8 C (100.0 F)
1957	34.4 C (93.9 F)
1958	40.0 C (104.0 F)
1959	37.8 C (100.0 F)
1960	37.8 C (100.0 F)
1961	35.6 C (96.1 F)
1962	35.6 C (96.1 F)
1963	35.0 C (95.0 F)
1964	35.6 C (96.1 F)
1965	37.8 C (100.0 F)
1966	36.1 C (97.0 F)
1967	40.0 C (104.0 F)
1968	35.6 C (96.1 F)
1969	36.7 C (98.1 F)
1970	37.8 C (100.0 F)
1971	40.6 C (105.1 F)
1972	35.6 C (96.1 F)
1973	43.9 C (111.0 F)
1974	40.0 C (104.0 F)
1975	38.9 C (102.0 F)
1976	36.7 C (98.1 F)
1978	35.6 C (96.1 F)
1979	35.6 C (96.1 F)
1980	38.9 C (102.0 F)
1981	35.0 C (95.0 F)
1982	32.8 C (91.0 F)
1983	38.9 C (102.0 F)
2011	n/a

Coldest night (TNn)

The coldest night of the year at Ozuluama, 1925 to 2011. The record is 0.6 C (33.1 F) in 1939, marked on the chart; the median year is 5.6 C (42.1 F).

Coldest night (TNn) at Ozuluama by year
Year	Coldest night (TNn)
1925	8.3 C (46.9 F)
1926	7.8 C (46.0 F)
1927	5.0 C (41.0 F)
1928	7.2 C (45.0 F)
1929	6.1 C (43.0 F)
1930	5.0 C (41.0 F)
1931	10.0 C (50.0 F)
1932	5.6 C (42.1 F)
1933	8.9 C (48.0 F)
1934	10.0 C (50.0 F)
1935	7.2 C (45.0 F)
1936	8.3 C (46.9 F)
1937	10.0 C (50.0 F)
1938	7.8 C (46.0 F)
1939	0.6 C (33.1 F)
1940	5.0 C (41.0 F)
1941	10.0 C (50.0 F)
1942	10.0 C (50.0 F)
1943	7.8 C (46.0 F)
1944	7.8 C (46.0 F)
1945	6.1 C (43.0 F)
1946	5.6 C (42.1 F)
1947	3.9 C (39.0 F)
1948	3.9 C (39.0 F)
1949	2.8 C (37.0 F)
1950	10.0 C (50.0 F)
1951	5.6 C (42.1 F)
1952	5.6 C (42.1 F)
1953	3.9 C (39.0 F)
1954	5.0 C (41.0 F)
1955	2.8 C (37.0 F)
1956	3.9 C (39.0 F)
1957	5.6 C (42.1 F)
1958	5.6 C (42.1 F)
1959	5.6 C (42.1 F)
1960	5.6 C (42.1 F)
1961	7.8 C (46.0 F)
1962	8.9 C (48.0 F)
1963	2.8 C (37.0 F)
1964	5.0 C (41.0 F)
1965	6.7 C (44.1 F)
1966	5.6 C (42.1 F)
1967	1.1 C (34.0 F)
1968	6.7 C (44.1 F)
1969	6.7 C (44.1 F)
1970	5.0 C (41.0 F)
1971	3.9 C (39.0 F)
1972	3.9 C (39.0 F)
1973	5.0 C (41.0 F)
1974	7.8 C (46.0 F)
1975	5.0 C (41.0 F)
1976	6.7 C (44.1 F)
1978	10.6 C (51.1 F)
1979	3.9 C (39.0 F)
1980	1.7 C (35.1 F)
1981	10.0 C (50.0 F)
1982	6.7 C (44.1 F)
1983	10.0 C (50.0 F)
2011	n/a

Wettest day (Rx1day)

The wettest day of the year at Ozuluama, 1925 to 2011. The record is 264.9 mm (10.4 in) in 1930, marked on the chart; the median year is 119.9 mm (4.7 in).

Wettest day (Rx1day) at Ozuluama by year
Year	Wettest day (Rx1day)
1925	218.7 mm (8.6 in)
1926	111.8 mm (4.4 in)
1927	110.0 mm (4.3 in)
1928	199.9 mm (7.9 in)
1929	78.0 mm (3.1 in)
1930	264.9 mm (10.4 in)
1931	91.4 mm (3.6 in)
1932	161.8 mm (6.4 in)
1933	244.3 mm (9.6 in)
1934	64.8 mm (2.6 in)
1935	179.8 mm (7.1 in)
1936	69.9 mm (2.8 in)
1937	42.9 mm (1.7 in)
1938	21.8 mm (0.9 in)
1939	26.9 mm (1.1 in)
1940	35.8 mm (1.4 in)
1941	132.8 mm (5.2 in)
1942	142.7 mm (5.6 in)
1943	62.0 mm (2.4 in)
1944	209.8 mm (8.3 in)
1945	166.4 mm (6.6 in)
1946	231.9 mm (9.1 in)
1947	179.8 mm (7.1 in)
1948	128.3 mm (5.1 in)
1949	83.3 mm (3.3 in)
1950	181.9 mm (7.2 in)
1951	128.3 mm (5.1 in)
1952	239.8 mm (9.4 in)
1953	99.8 mm (3.9 in)
1954	215.9 mm (8.5 in)
1955	233.9 mm (9.2 in)
1956	179.8 mm (7.1 in)
1957	119.9 mm (4.7 in)
1958	113.8 mm (4.5 in)
1959	75.9 mm (3.0 in)
1960	46.0 mm (1.8 in)
1961	55.9 mm (2.2 in)
1962	119.9 mm (4.7 in)
1963	115.8 mm (4.6 in)
1964	119.9 mm (4.7 in)
1965	79.0 mm (3.1 in)
1966	91.9 mm (3.6 in)
1967	132.8 mm (5.2 in)
1968	72.9 mm (2.9 in)
1969	124.0 mm (4.9 in)
1970	119.9 mm (4.7 in)
1971	78.0 mm (3.1 in)
1972	99.8 mm (3.9 in)
1973	261.9 mm (10.3 in)
1974	220.0 mm (8.7 in)
1975	169.9 mm (6.7 in)
1976	159.8 mm (6.3 in)
1978	120.4 mm (4.7 in)
1979	47.0 mm (1.9 in)
1980	80.8 mm (3.2 in)
1981	80.0 mm (3.1 in)
1982	89.2 mm (3.5 in)
1983	39.9 mm (1.6 in)
2011	67.8 mm (2.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ozuluama, 1925 to 2011. The record is 620.8 mm (24.4 in) in 1944, marked on the chart; the median year is 204.9 mm (8.1 in).

Wettest five days (Rx5day) at Ozuluama by year
Year	Wettest five days (Rx5day)
1925	291.3 mm (11.5 in)
1926	189.3 mm (7.5 in)
1927	300.3 mm (11.8 in)
1928	392.7 mm (15.5 in)
1929	143.5 mm (5.6 in)
1930	365.2 mm (14.4 in)
1931	204.9 mm (8.1 in)
1932	253.7 mm (10.0 in)
1933	320.6 mm (12.6 in)
1934	147.9 mm (5.8 in)
1935	357.8 mm (14.1 in)
1936	215.1 mm (8.5 in)
1937	156.7 mm (6.2 in)
1938	76.2 mm (3.0 in)
1939	96.8 mm (3.8 in)
1940	57.4 mm (2.3 in)
1941	310.4 mm (12.2 in)
1942	211.6 mm (8.3 in)
1943	124.0 mm (4.9 in)
1944	620.8 mm (24.4 in)
1945	382.7 mm (15.1 in)
1946	382.6 mm (15.1 in)
1947	504.4 mm (19.9 in)
1948	153.7 mm (6.1 in)
1949	253.3 mm (10.0 in)
1950	185.2 mm (7.3 in)
1951	210.9 mm (8.3 in)
1952	538.9 mm (21.2 in)
1953	275.0 mm (10.8 in)
1954	580.4 mm (22.9 in)
1955	366.8 mm (14.4 in)
1956	466.3 mm (18.4 in)
1957	187.5 mm (7.4 in)
1958	314.5 mm (12.4 in)
1959	130.8 mm (5.1 in)
1960	99.2 mm (3.9 in)
1961	88.7 mm (3.5 in)
1962	195.6 mm (7.7 in)
1963	198.3 mm (7.8 in)
1964	195.6 mm (7.7 in)
1965	91.7 mm (3.6 in)
1966	217.5 mm (8.6 in)
1967	349.5 mm (13.8 in)
1968	92.5 mm (3.6 in)
1969	190.5 mm (7.5 in)
1970	201.0 mm (7.9 in)
1971	192.4 mm (7.6 in)
1972	173.3 mm (6.8 in)
1973	410.3 mm (16.2 in)
1974	294.6 mm (11.6 in)
1975	344.2 mm (13.6 in)
1976	221.3 mm (8.7 in)
1978	246.8 mm (9.7 in)
1979	116.5 mm (4.6 in)
1980	163.1 mm (6.4 in)
1981	101.3 mm (4.0 in)
1982	135.2 mm (5.3 in)
1983	85.4 mm (3.4 in)
2011	180.3 mm (7.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ozuluama, 1925 to 2011. The record is 90 days in 1945, marked on the chart; the median year is 37 days.

Longest dry spell (CDD) at Ozuluama by year
Year	Longest dry spell (CDD)
1925	26 days
1926	29 days
1927	70 days
1928	24 days
1929	54 days
1930	25 days
1931	23 days
1932	48 days
1933	62 days
1934	28 days
1935	36 days
1936	42 days
1937	26 days
1938	34 days
1939	37 days
1940	44 days
1941	24 days
1942	46 days
1943	42 days
1944	62 days
1945	90 days
1946	36 days
1947	32 days
1948	38 days
1949	55 days
1950	46 days
1951	70 days
1952	41 days
1953	43 days
1954	49 days
1955	65 days
1956	37 days
1957	47 days
1958	55 days
1959	20 days
1960	37 days
1961	37 days
1962	46 days
1963	27 days
1964	22 days
1965	28 days
1966	30 days
1967	26 days
1968	24 days
1969	27 days
1970	35 days
1971	34 days
1972	16 days
1973	22 days
1974	44 days
1975	33 days
1976	21 days
1978	12 days
1979	38 days
1980	63 days
1981	63 days
1982	90 days
1983	60 days
2011	46 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

47 years, 1926 to 2011

A day with at least 123.4 mm (4.9 in) of rain is expected about once in 2 years. A day with at least 325.7 mm (12.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Ozuluama: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	123.4 mm (4.9 in)
5 years	186.7 mm (7.4 in)
10 years	224.6 mm (8.8 in)
25 years	268.5 mm (10.6 in)
50 years	298.2 mm (11.7 in)	Longer than the 47 years of record
100 years	325.7 mm (12.8 in)	Longer than the 47 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, 47 years of values from 1926 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: 264.9 mm (10.4 in) in 1930; 261.9 mm (10.3 in) in 1973; 244.3 mm (9.6 in) in 1933.

Download the Data

Data for Ozuluama standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ozuluama 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 2026-10-16 (16 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).