Nueva Rosita Weather Records (MXN00005021)

Record envelope, standing records and threshold days for Nueva Rosita (MXN00005021), Mexico, with 58 years of record.

Key Facts for Nueva Rosita

Nueva Rosita (MXN00005021) is a weather station in Mexico at 27.92 latitude and -101.25 longitude, 369 m (1,210 ft) above sea level.
The station reports from 1924 to 1981, 58 years of record.
1,464 records set at Nueva Rosita still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Nueva Rosita set a daily record low minimum temperature of 2.8 C (37.0 F) on 25 April 1981.

About the Station

Location: Mexico, 27.92 latitude, -101.25 longitude.
Elevation: 369 m (1,210 ft).
Period of record: 1924 to 1981, 58 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 Nueva Rosita. 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 Nueva Rosita, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.6 C (96.1 F)	-13.3 C (8.1 F)	n/a	n/a
Feb	36.7 C (98.1 F)	-8.9 C (16.0 F)	n/a	n/a
Mar	41.7 C (107.1 F)	-3.3 C (26.1 F)	n/a	n/a
Apr	43.9 C (111.0 F)	0.0 C (32.0 F)	n/a	n/a
May	45.0 C (113.0 F)	1.7 C (35.1 F)	n/a	n/a
Jun	45.6 C (114.1 F)	13.9 C (57.0 F)	n/a	n/a
Jul	45.6 C (114.1 F)	15.6 C (60.1 F)	n/a	n/a
Aug	46.7 C (116.1 F)	11.1 C (52.0 F)	n/a	n/a
Sep	43.9 C (111.0 F)	3.9 C (39.0 F)	n/a	n/a
Oct	40.6 C (105.1 F)	2.8 C (37.0 F)	n/a	n/a
Nov	37.8 C (100.0 F)	-6.1 C (21.0 F)	n/a	n/a
Dec	32.8 C (91.0 F)	-6.7 C (19.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Nueva Rosita still stand. 1933 holds the most, with 80.

Standing records at Nueva Rosita by the year they were set
Year set	Standing records
1924	15
1925	63
1926	26
1927	59
1928	42
1929	48
1930	68
1931	55
1932	53
1933	80
1934	13
1935	11
1936	21
1937	14
1938	35
1939	7
1940	41
1941	11
1942	31
1943	54
1944	32
1945	35
1946	20
1947	23
1948	30
1949	30
1950	20
1951	28
1952	22
1953	18
1954	9
1955	23
1956	41
1957	26
1958	14
1959	30
1960	34
1961	33
1962	34
1963	19
1964	33
1965	25
1966	18
1967	17
1968	22
1969	13
1970	11
1971	32
1980	13
1981	12

All-Time Record Progression

4 new records

4 all-time records were set at Nueva Rosita between 26 May 1957 and 10 July 1964. Each dot is a new record.

When Nueva Rosita set new all-time records
Date	Kind	Detail
1957-05-26	Record daily precipitation	Record daily precipitation 141.0 mm (5.6 in)
1962-01-11	Record low minimum temperature	Record low minimum temperature -9.4 C (15.1 F)
1962-01-12	Record low minimum temperature	Record low minimum temperature -13.3 C (8.1 F)
1964-07-10	Record high minimum temperature	Record high minimum temperature 31.7 C (89.1 F)

Wettest Day of Each Month

May: 141.0 mm (5.6 in)

The wettest day on record for each calendar month at Nueva Rosita. The most was 141.0 mm (5.6 in) on 26 May 1957.

Record daily precipitation for each month at Nueva Rosita
Month	Record daily precipitation (mm)	Date
Jan	33.3 mm (1.3 in)	29 January 1931
Feb	47.8 mm (1.9 in)	11 February 1960
Mar	39.9 mm (1.6 in)	15 March 1931
Apr	79.8 mm (3.1 in)	27 April 1930
May	141.0 mm (5.6 in)	26 May 1957
Jun	75.9 mm (3.0 in)	22 June 1927
Jul	84.3 mm (3.3 in)	16 July 1960
Aug	119.9 mm (4.7 in)	5 August 1949
Sep	131.3 mm (5.2 in)	19 September 1964
Oct	85.3 mm (3.4 in)	21 October 1963
Nov	65.8 mm (2.6 in)	7 November 1965
Dec	41.9 mm (1.6 in)	21 December 1939

Period of Record Coverage

1924 to 1981

50 years of record at Nueva Rosita, 1924 to 1981. 11 years have data for under 90 percent of days and are left out of rankings: 1924, 1925, 1926, 1932, 1955, 1956, 1965, 1969 and others.

Days with data per year at Nueva Rosita
Year	Days with data	Share of year	Complete
1924	61	17%	No
1925	304	83%	No
1926	245	67%	No
1927	365	100%	Yes
1928	366	100%	Yes
1929	365	100%	Yes
1930	365	100%	Yes
1931	365	100%	Yes
1932	274	75%	No
1933	365	100%	Yes
1934	364	100%	Yes
1935	363	99%	Yes
1936	363	99%	Yes
1937	364	100%	Yes
1938	365	100%	Yes
1939	365	100%	Yes
1940	366	100%	Yes
1941	364	100%	Yes
1942	365	100%	Yes
1943	363	99%	Yes
1944	365	100%	Yes
1945	362	99%	Yes
1946	360	99%	Yes
1947	358	98%	Yes
1948	363	99%	Yes
1949	359	98%	Yes
1950	361	99%	Yes
1951	358	98%	Yes
1952	364	99%	Yes
1953	361	99%	Yes
1954	362	99%	Yes
1955	302	83%	No
1956	130	36%	No
1957	358	98%	Yes
1958	359	98%	Yes
1959	361	99%	Yes
1960	362	99%	Yes
1961	363	99%	Yes
1962	363	99%	Yes
1963	363	99%	Yes
1964	362	99%	Yes
1965	270	74%	No
1966	360	99%	Yes
1967	364	100%	Yes
1968	362	99%	Yes
1969	292	80%	No
1970	330	90%	Yes
1971	211	58%	No
1980	55	15%	No
1981	103	28%	No

Latest Records

Latest records at Nueva Rosita
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 April 1981	Nueva Rosita, MX	daily low min	2.8 C (37.0 F)	2.2 C (4.0 F)	32 years	19 of 100 (Routine)
24 April 1981	Nueva Rosita, MX	daily low min (Tie)	6.7 C (44.1 F)	tie	22 years	2 of 100 (Routine)
23 April 1981	Nueva Rosita, MX	daily rain	11.9 mm (0.5 in)	11.9 mm (0.5 in)	56 years	20 of 100 (Routine)
18 April 1981	Nueva Rosita, MX	daily rain (Tie)	4.8 mm (0.19 in)	tie	36 years	4 of 100 (Routine)
17 April 1981	Nueva Rosita, MX	daily rain	2.8 mm (0.11 in)	2.0 mm (0.08 in)	22 years	12 of 100 (Routine)
15 April 1981	Nueva Rosita, MX	daily rain	26.9 mm (1.1 in)	19.0 mm (0.7 in)	27 years	24 of 100 (Routine)
15 April 1981	Nueva Rosita, MX	daily high max	38.9 C (102.0 F)	1.1 C (2.0 F)	48 years	21 of 100 (Routine)
13 April 1981	Nueva Rosita, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	27 years	3 of 100 (Routine)
8 April 1981	Nueva Rosita, MX	daily low min	2.8 C (37.0 F)	2.8 C (5.0 F)	52 years	26 of 100 (Routine)
6 April 1981	Nueva Rosita, MX	daily high max	40.6 C (105.1 F)	1.7 C (3.1 F)	20 years	14 of 100 (Routine)
5 April 1981	Nueva Rosita, MX	daily low min	2.8 C (37.0 F)	2.2 C (4.0 F)	42 years	22 of 100 (Routine)
4 April 1981	Nueva Rosita, MX	daily low min (Tie)	3.9 C (39.0 F)	tie	36 years	4 of 100 (Routine)
4 April 1981	Nueva Rosita, MX	daily high max (Tie)	40.6 C (105.1 F)	tie	23 years	2 of 100 (Routine)
3 April 1981	Nueva Rosita, MX	daily low min	2.8 C (37.0 F)	2.8 C (5.0 F)	20 years	17 of 100 (Routine)
3 April 1981	Nueva Rosita, MX	daily high max	38.9 C (102.0 F)	1.1 C (2.0 F)	23 years	13 of 100 (Routine)
2 April 1981	Nueva Rosita, MX	daily high max	38.9 C (102.0 F)	1.1 C (2.0 F)	24 years	14 of 100 (Routine)
2 April 1981	Nueva Rosita, MX	daily low min (Tie)	3.9 C (39.0 F)	tie	20 years	2 of 100 (Routine)
1 April 1981	Nueva Rosita, MX	daily low min	5.0 C (41.0 F)	0.6 C (1.1 F)	22 years	12 of 100 (Routine)
23 March 1981	Nueva Rosita, MX	daily low max	10.6 C (51.1 F)	3.3 C (5.9 F)	28 years	18 of 100 (Routine)
17 March 1981	Nueva Rosita, MX	daily low min	0.0 C (32.0 F)	1.7 C (3.1 F)	52 years	23 of 100 (Routine)

Climate Trend

37 complete years, 1927 to 1968

One stripe for each of 37 complete years at Nueva Rosita, 1927 to 1968. Blue stripes are years cooler than the station's own mean of 21.1 C (70.1 F); red stripes are warmer. The coolest year was 1968, at 19.5 C (67.0 F), and the warmest was 1927, at 22.8 C (73.1 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Nueva Rosita as warming stripes, 1927 to 1968
Year	Annual mean temperature	Difference from the station mean
1927	22.8 C	+1.66 C
1928	21.4 C	+0.20 C
1929	21.9 C	+0.71 C
1930	22.0 C	+0.87 C
1931	22.0 C	+0.87 C
1933	21.3 C	+0.16 C
1934	21.0 C	-0.11 C
1935	21.3 C	+0.19 C
1936	20.3 C	-0.90 C
1937	21.1 C	-0.08 C
1938	21.7 C	+0.56 C
1939	21.4 C	+0.23 C
1940	20.9 C	-0.21 C
1941	21.2 C	+0.09 C
1942	21.1 C	-0.08 C
1943	22.0 C	+0.87 C
1944	21.7 C	+0.50 C
1945	22.2 C	+1.03 C
1946	21.4 C	+0.21 C
1947	20.3 C	-0.90 C
1948	20.8 C	-0.39 C
1949	20.1 C	-1.04 C
1950	20.9 C	-0.21 C
1951	20.7 C	-0.43 C
1952	20.5 C	-0.66 C
1953	21.2 C	+0.08 C
1954	21.4 C	+0.23 C
1957	21.2 C	+0.04 C
1958	20.4 C	-0.77 C
1959	20.5 C	-0.63 C
1960	21.1 C	-0.02 C
1961	20.4 C	-0.78 C
1962	22.2 C	+1.05 C
1963	21.3 C	+0.12 C
1964	21.5 C	+0.37 C
1966	19.9 C	-1.24 C
1968	19.5 C	-1.69 C

The annual mean temperature here has fallen by 0.3 C (0.1 to 0.5) per decade over 1927 to 1968. In Fahrenheit: 0.5 F (0.2 to 0.9) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Nueva Rosita
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.3 C (-0.5 to -0.1) per decade	-0.5 F (-0.9 to -0.2) per decade	1927 to 1968	37	Fall
Mean daily maximum	-0.28 C (-0.60 to 0.03) per decade	-0.5 F (-1.1 to 0.1) per decade	1927 to 1968	37	Not clearly different from zero
Mean daily minimum	-0.3 C (-0.5 to -0.2) per decade	-0.6 F (-0.8 to -0.3) per decade	1927 to 1968	37	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

1924 to 1981

Yearly extremes at Nueva Rosita: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.7 C (116.1 F)	1943	41.7 C (107.1 F)	50
Coldest night (TNn)	-13.3 C (8.1 F)	1962	-5.0 C (23.0 F)	50
Wettest day (Rx1day)	141.0 mm (5.6 in)	1957	59.2 mm (2.3 in)	50
Wettest five days (Rx5day)	230.9 mm (9.1 in)	1964	92.6 mm (3.6 in)	50
Longest dry spell (CDD)	164 days	1953	64 days	50

Hottest day (TXx)

The hottest day of the year at Nueva Rosita, 1924 to 1981. The record is 46.7 C (116.1 F) in 1943, marked on the chart; the median year is 41.7 C (107.1 F).

Hottest day (TXx) at Nueva Rosita by year
Year	Hottest day (TXx)
1924	32.2 C (90.0 F)
1925	40.0 C (104.0 F)
1926	41.7 C (107.1 F)
1927	45.0 C (113.0 F)
1928	43.3 C (109.9 F)
1929	42.2 C (108.0 F)
1930	43.3 C (109.9 F)
1931	42.2 C (108.0 F)
1932	42.2 C (108.0 F)
1933	40.0 C (104.0 F)
1934	40.0 C (104.0 F)
1935	39.4 C (102.9 F)
1936	40.6 C (105.1 F)
1937	40.0 C (104.0 F)
1938	40.0 C (104.0 F)
1939	41.7 C (107.1 F)
1940	41.1 C (106.0 F)
1941	41.7 C (107.1 F)
1942	45.0 C (113.0 F)
1943	46.7 C (116.1 F)
1944	45.0 C (113.0 F)
1945	45.6 C (114.1 F)
1946	43.9 C (111.0 F)
1947	40.6 C (105.1 F)
1948	41.7 C (107.1 F)
1949	38.9 C (102.0 F)
1950	40.0 C (104.0 F)
1951	41.7 C (107.1 F)
1952	43.9 C (111.0 F)
1953	43.9 C (111.0 F)
1954	43.9 C (111.0 F)
1955	40.6 C (105.1 F)
1956	41.7 C (107.1 F)
1957	43.9 C (111.0 F)
1958	43.9 C (111.0 F)
1959	40.6 C (105.1 F)
1960	45.6 C (114.1 F)
1961	40.6 C (105.1 F)
1962	45.0 C (113.0 F)
1963	41.7 C (107.1 F)
1964	43.9 C (111.0 F)
1965	40.6 C (105.1 F)
1966	41.7 C (107.1 F)
1967	40.6 C (105.1 F)
1968	38.9 C (102.0 F)
1969	41.7 C (107.1 F)
1970	38.9 C (102.0 F)
1971	38.9 C (102.0 F)
1980	38.9 C (102.0 F)
1981	40.6 C (105.1 F)

Coldest night (TNn)

The coldest night of the year at Nueva Rosita, 1924 to 1981. The record is -13.3 C (8.1 F) in 1962, marked on the chart; the median year is -5.0 C (23.0 F).

Coldest night (TNn) at Nueva Rosita by year
Year	Coldest night (TNn)
1924	-3.3 C (26.1 F)
1925	-6.7 C (19.9 F)
1926	-4.4 C (24.1 F)
1927	-3.9 C (25.0 F)
1928	-6.1 C (21.0 F)
1929	-5.0 C (23.0 F)
1930	-8.9 C (16.0 F)
1931	-2.2 C (28.0 F)
1932	-4.4 C (24.1 F)
1933	-8.9 C (16.0 F)
1934	-3.9 C (25.0 F)
1935	-5.0 C (23.0 F)
1936	-3.9 C (25.0 F)
1937	-3.3 C (26.1 F)
1938	-6.1 C (21.0 F)
1939	-2.2 C (28.0 F)
1940	-5.0 C (23.0 F)
1941	-3.3 C (26.1 F)
1942	-6.1 C (21.0 F)
1943	-7.8 C (18.0 F)
1944	-6.1 C (21.0 F)
1945	-3.3 C (26.1 F)
1946	-3.3 C (26.1 F)
1947	-5.0 C (23.0 F)
1948	-6.1 C (21.0 F)
1949	-8.3 C (17.1 F)
1950	-6.1 C (21.0 F)
1951	-5.0 C (23.0 F)
1952	-2.2 C (28.0 F)
1953	-5.0 C (23.0 F)
1954	-2.2 C (28.0 F)
1955	-3.3 C (26.1 F)
1956	-2.2 C (28.0 F)
1957	-6.1 C (21.0 F)
1958	-5.0 C (23.0 F)
1959	-5.0 C (23.0 F)
1960	-7.2 C (19.0 F)
1961	-4.4 C (24.1 F)
1962	-13.3 C (8.1 F)
1963	-8.3 C (17.1 F)
1964	-7.2 C (19.0 F)
1965	-6.1 C (21.0 F)
1966	-5.0 C (23.0 F)
1967	-5.0 C (23.0 F)
1968	-3.3 C (26.1 F)
1969	-4.4 C (24.1 F)
1970	-1.1 C (30.0 F)
1971	-4.4 C (24.1 F)
1980	0.0 C (32.0 F)
1981	0.0 C (32.0 F)

Wettest day (Rx1day)

The wettest day of the year at Nueva Rosita, 1924 to 1981. The record is 141.0 mm (5.6 in) in 1957, marked on the chart; the median year is 59.2 mm (2.3 in).

Wettest day (Rx1day) at Nueva Rosita by year
Year	Wettest day (Rx1day)
1924	1.3 mm (0.05 in)
1925	47.8 mm (1.9 in)
1926	71.4 mm (2.8 in)
1927	75.9 mm (3.0 in)
1928	79.8 mm (3.1 in)
1929	50.3 mm (2.0 in)
1930	79.8 mm (3.1 in)
1931	67.3 mm (2.6 in)
1932	47.0 mm (1.9 in)
1933	64.8 mm (2.6 in)
1934	42.4 mm (1.7 in)
1935	67.3 mm (2.6 in)
1936	39.9 mm (1.6 in)
1937	48.3 mm (1.9 in)
1938	69.9 mm (2.8 in)
1939	74.9 mm (2.9 in)
1940	89.9 mm (3.5 in)
1941	58.4 mm (2.3 in)
1942	54.9 mm (2.2 in)
1943	35.8 mm (1.4 in)
1944	69.9 mm (2.8 in)
1945	56.9 mm (2.2 in)
1946	69.9 mm (2.8 in)
1947	75.9 mm (3.0 in)
1948	55.9 mm (2.2 in)
1949	119.9 mm (4.7 in)
1950	75.9 mm (3.0 in)
1951	57.9 mm (2.3 in)
1952	24.9 mm (1.0 in)
1953	43.9 mm (1.7 in)
1954	25.9 mm (1.0 in)
1955	36.8 mm (1.4 in)
1956	19.1 mm (0.8 in)
1957	141.0 mm (5.6 in)
1958	108.2 mm (4.3 in)
1959	40.4 mm (1.6 in)
1960	84.3 mm (3.3 in)
1961	71.9 mm (2.8 in)
1962	27.9 mm (1.1 in)
1963	85.3 mm (3.4 in)
1964	131.3 mm (5.2 in)
1965	92.5 mm (3.6 in)
1966	46.5 mm (1.8 in)
1967	43.9 mm (1.7 in)
1968	59.9 mm (2.4 in)
1969	42.9 mm (1.7 in)
1970	82.8 mm (3.3 in)
1971	69.9 mm (2.8 in)
1980	0.3 mm (0.01 in)
1981	26.9 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Nueva Rosita, 1924 to 1981. The record is 230.9 mm (9.1 in) in 1964, marked on the chart; the median year is 92.6 mm (3.6 in).

Wettest five days (Rx5day) at Nueva Rosita by year
Year	Wettest five days (Rx5day)
1924	1.3 mm (0.05 in)
1925	60.2 mm (2.4 in)
1926	86.9 mm (3.4 in)
1927	156.4 mm (6.2 in)
1928	96.3 mm (3.8 in)
1929	55.4 mm (2.2 in)
1930	139.7 mm (5.5 in)
1931	91.4 mm (3.6 in)
1932	53.6 mm (2.1 in)
1933	72.2 mm (2.8 in)
1934	115.6 mm (4.6 in)
1935	87.3 mm (3.4 in)
1936	93.7 mm (3.7 in)
1937	54.1 mm (2.1 in)
1938	103.6 mm (4.1 in)
1939	74.9 mm (2.9 in)
1940	97.6 mm (3.8 in)
1941	94.5 mm (3.7 in)
1942	54.9 mm (2.2 in)
1943	45.5 mm (1.8 in)
1944	89.4 mm (3.5 in)
1945	117.4 mm (4.6 in)
1946	120.7 mm (4.8 in)
1947	93.7 mm (3.7 in)
1948	134.6 mm (5.3 in)
1949	153.7 mm (6.1 in)
1950	125.7 mm (4.9 in)
1951	71.7 mm (2.8 in)
1952	35.6 mm (1.4 in)
1953	123.4 mm (4.9 in)
1954	37.8 mm (1.5 in)
1955	38.6 mm (1.5 in)
1956	31.0 mm (1.2 in)
1957	145.1 mm (5.7 in)
1958	147.6 mm (5.8 in)
1959	49.5 mm (1.9 in)
1960	151.8 mm (6.0 in)
1961	128.3 mm (5.1 in)
1962	31.3 mm (1.2 in)
1963	91.1 mm (3.6 in)
1964	230.9 mm (9.1 in)
1965	169.2 mm (6.7 in)
1966	96.8 mm (3.8 in)
1967	74.9 mm (2.9 in)
1968	104.9 mm (4.1 in)
1969	49.6 mm (2.0 in)
1970	147.6 mm (5.8 in)
1971	192.1 mm (7.6 in)
1980	0.3 mm (0.01 in)
1981	41.9 mm (1.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Nueva Rosita, 1924 to 1981. The record is 164 days in 1953, marked on the chart; the median year is 64 days.

Longest dry spell (CDD) at Nueva Rosita by year
Year	Longest dry spell (CDD)
1924	30 days
1925	79 days
1926	61 days
1927	74 days
1928	70 days
1929	68 days
1930	81 days
1931	103 days
1932	51 days
1933	85 days
1934	68 days
1935	47 days
1936	69 days
1937	63 days
1938	105 days
1939	90 days
1940	64 days
1941	63 days
1942	62 days
1943	52 days
1944	30 days
1945	84 days
1946	86 days
1947	64 days
1948	112 days
1949	49 days
1950	98 days
1951	117 days
1952	161 days
1953	164 days
1954	69 days
1955	95 days
1956	115 days
1957	60 days
1958	53 days
1959	43 days
1960	49 days
1961	58 days
1962	52 days
1963	60 days
1964	50 days
1965	34 days
1966	82 days
1967	77 days
1968	47 days
1969	58 days
1970	81 days
1971	54 days
1980	31 days
1981	40 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

35 years with a frost

Across 35 years with a frost, the median last spring frost at Nueva Rosita falls on 23 February and the median first autumn frost on 5 December, which leaves a median of 281 days between them.

Fitted over all years, the growing season changes by -4.6 days per decade at this station.

Frost dates and growing season at Nueva Rosita
Measure	Median, all years	Earliest period	Recent period (1934 to 1968)	Recent against earliest	Fitted trend
Last spring frost	23 February	n/a	25 February	n/a	+6.7 days per decade
First autumn frost	5 December	n/a	5 December	n/a	+2.1 days per decade
Growing days	281 days	n/a	281 days	n/a	-4.6 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

38 years, 1927 to 1970

A day with at least 63.8 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 144.9 mm (5.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Nueva Rosita: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	63.8 mm (2.5 in)
5 years	87.7 mm (3.5 in)
10 years	102.6 mm (4.0 in)
25 years	120.4 mm (4.7 in)
50 years	133.0 mm (5.2 in)	Longer than the 38 years of record
100 years	144.9 mm (5.7 in)	Longer than the 38 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, 38 years of values from 1927 to 1970.

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: 141.0 mm (5.6 in) in 1957; 131.3 mm (5.2 in) in 1964; 119.9 mm (4.7 in) in 1949.

Download the Data

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