Rancho Santa Rosa Weather Records (MXN00030345)

Record envelope, standing records and threshold days for Rancho Santa Rosa (MXN00030345), Mexico, with 33 years of record.

Key Facts for Rancho Santa Rosa

Rancho Santa Rosa (MXN00030345) is a weather station in Mexico at 21.50 latitude and -98.17 longitude, 98 m (321 ft) above sea level.
The station reports from 1979 to 2011, 33 years of record.
1,464 records set at Rancho Santa Rosa still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 21.50 latitude, -98.17 longitude.
Elevation: 98 m (321 ft).
Period of record: 1979 to 2011, 33 years.
Eligible elements: none yet.

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 Rancho Santa Rosa. 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 Rancho Santa Rosa, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.0 C (95.0 F)	3.9 C (39.0 F)	n/a	n/a
Feb	35.6 C (96.1 F)	1.7 C (35.1 F)	n/a	n/a
Mar	41.7 C (107.1 F)	6.7 C (44.1 F)	n/a	n/a
Apr	46.7 C (116.1 F)	8.9 C (48.0 F)	n/a	n/a
May	45.0 C (113.0 F)	11.7 C (53.1 F)	n/a	n/a
Jun	45.0 C (113.0 F)	15.0 C (59.0 F)	n/a	n/a
Jul	39.4 C (102.9 F)	18.9 C (66.0 F)	n/a	n/a
Aug	38.3 C (100.9 F)	16.7 C (62.1 F)	n/a	n/a
Sep	39.4 C (102.9 F)	15.6 C (60.1 F)	n/a	n/a
Oct	36.7 C (98.1 F)	8.9 C (48.0 F)	n/a	n/a
Nov	33.9 C (93.0 F)	5.6 C (42.1 F)	n/a	n/a
Dec	34.4 C (93.9 F)	-1.1 C (30.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Rancho Santa Rosa still stand. 1979 holds the most, with 89.

Standing records at Rancho Santa Rosa by the year they were set
Year set	Standing records
1979	89
1980	73
1981	33
1982	75
1983	75
1984	80
1985	45
1986	53
1987	30
1988	13
1989	70
1990	44
1991	66
1992	39
1993	45
1994	45
1995	29
1996	7
1997	54
1998	76
1999	37
2000	46
2001	35
2002	37
2003	40
2004	31
2005	30
2006	32
2007	29
2008	40
2011	66

Wettest Day of Each Month

Aug: 336.3 mm (13.2 in)

The wettest day on record for each calendar month at Rancho Santa Rosa. The most was 336.3 mm (13.2 in) on 7 August 1990.

Record daily precipitation for each month at Rancho Santa Rosa
Month	Record daily precipitation (mm)	Date
Jan	47.0 mm (1.9 in)	17 January 1981
Feb	112.3 mm (4.4 in)	3 February 2007
Mar	59.4 mm (2.3 in)	29 March 2004
Apr	112.3 mm (4.4 in)	4 April 2007
May	147.3 mm (5.8 in)	21 May 1985
Jun	156.5 mm (6.2 in)	2 June 2004
Jul	139.4 mm (5.5 in)	1 July 2011
Aug	336.3 mm (13.2 in)	7 August 1990
Sep	311.4 mm (12.3 in)	20 September 1993
Oct	172.5 mm (6.8 in)	7 October 1991
Nov	67.3 mm (2.6 in)	15 November 2007
Dec	84.3 mm (3.3 in)	4 December 1981

Period of Record Coverage

1979 to 2011

31 years of record at Rancho Santa Rosa, 1979 to 2011. 5 years have data for under 90 percent of days and are left out of rankings: 1987, 1988, 1995, 1996, 2001.

Days with data per year at Rancho Santa Rosa
Year	Days with data	Share of year	Complete
1979	350	96%	Yes
1980	355	97%	Yes
1981	359	98%	Yes
1982	356	98%	Yes
1983	362	99%	Yes
1984	359	98%	Yes
1985	337	92%	Yes
1986	365	100%	Yes
1987	151	41%	No
1988	46	13%	No
1989	363	99%	Yes
1990	365	100%	Yes
1991	362	99%	Yes
1992	365	100%	Yes
1993	364	100%	Yes
1994	364	100%	Yes
1995	118	32%	No
1996	57	16%	No
1997	357	98%	Yes
1998	364	100%	Yes
1999	334	92%	Yes
2000	366	100%	Yes
2001	303	83%	No
2002	364	100%	Yes
2003	363	99%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	364	100%	Yes
2007	360	99%	Yes
2008	366	100%	Yes
2011	358	98%	Yes

Latest Records

No records were set at this station in the latest data.

Climate Trend

23 complete years, 1980 to 2011

One stripe for each of 23 complete years at Rancho Santa Rosa, 1980 to 2011. Blue stripes are years cooler than the station's own mean of 23.8 C (74.8 F); red stripes are warmer. The coolest year was 1992, at 22.8 C (73.0 F), and the warmest was 1998, at 24.8 C (76.7 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at Rancho Santa Rosa as warming stripes, 1980 to 2011
Year	Annual mean temperature	Difference from the station mean
1980	24.0 C	+0.19 C
1981	23.3 C	-0.48 C
1982	24.1 C	+0.34 C
1983	23.8 C	+0.08 C
1984	23.3 C	-0.49 C
1986	23.7 C	-0.05 C
1989	23.3 C	-0.46 C
1990	23.3 C	-0.50 C
1991	24.0 C	+0.23 C
1992	22.8 C	-0.98 C
1993	23.5 C	-0.25 C
1994	23.7 C	-0.08 C
1997	23.5 C	-0.22 C
1998	24.8 C	+1.08 C
2000	24.1 C	+0.31 C
2002	24.0 C	+0.27 C
2003	24.4 C	+0.65 C
2004	23.6 C	-0.13 C
2005	23.8 C	-0.01 C
2006	24.3 C	+0.58 C
2007	23.7 C	-0.05 C
2008	23.7 C	-0.09 C
2011	23.7 C	-0.04 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1979 to 2011

Yearly extremes at Rancho Santa Rosa: 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)	1998	40.0 C (104.0 F)	31
Coldest night (TNn)	-1.1 C (30.0 F)	1983	6.7 C (44.1 F)	31
Wettest day (Rx1day)	336.3 mm (13.2 in)	1990	95.3 mm (3.8 in)	31
Wettest five days (Rx5day)	537.5 mm (21.2 in)	1990	170.7 mm (6.7 in)	31
Longest dry spell (CDD)	70 days	2003	36 days	31

Hottest day (TXx)

The hottest day of the year at Rancho Santa Rosa, 1979 to 2011. The record is 46.7 C (116.1 F) in 1998, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at Rancho Santa Rosa by year
Year	Hottest day (TXx)
1979	41.7 C (107.1 F)
1980	43.3 C (109.9 F)
1981	40.0 C (104.0 F)
1982	40.0 C (104.0 F)
1983	41.7 C (107.1 F)
1984	45.0 C (113.0 F)
1985	35.6 C (96.1 F)
1986	37.8 C (100.0 F)
1987	37.8 C (100.0 F)
1988	33.9 C (93.0 F)
1989	40.0 C (104.0 F)
1990	38.9 C (102.0 F)
1991	42.8 C (109.0 F)
1992	35.0 C (95.0 F)
1993	40.0 C (104.0 F)
1994	37.8 C (100.0 F)
1995	35.6 C (96.1 F)
1996	30.6 C (87.1 F)
1997	37.8 C (100.0 F)
1998	46.7 C (116.1 F)
1999	37.8 C (100.0 F)
2000	41.7 C (107.1 F)
2001	40.6 C (105.1 F)
2002	41.7 C (107.1 F)
2003	43.9 C (111.0 F)
2004	40.0 C (104.0 F)
2005	43.9 C (111.0 F)
2006	41.7 C (107.1 F)
2007	37.8 C (100.0 F)
2008	42.8 C (109.0 F)
2011	42.8 C (109.0 F)

Coldest night (TNn)

The coldest night of the year at Rancho Santa Rosa, 1979 to 2011. The record is -1.1 C (30.0 F) in 1983, marked on the chart; the median year is 6.7 C (44.1 F).

Coldest night (TNn) at Rancho Santa Rosa by year
Year	Coldest night (TNn)
1979	7.8 C (46.0 F)
1980	7.2 C (45.0 F)
1981	7.8 C (46.0 F)
1982	5.6 C (42.1 F)
1983	-1.1 C (30.0 F)
1984	5.0 C (41.0 F)
1985	3.9 C (39.0 F)
1986	6.1 C (43.0 F)
1987	5.0 C (41.0 F)
1988	10.6 C (51.1 F)
1989	5.0 C (41.0 F)
1990	6.7 C (44.1 F)
1991	7.8 C (46.0 F)
1992	7.8 C (46.0 F)
1993	6.7 C (44.1 F)
1994	6.7 C (44.1 F)
1995	7.8 C (46.0 F)
1996	6.7 C (44.1 F)
1997	3.9 C (39.0 F)
1998	7.8 C (46.0 F)
1999	6.7 C (44.1 F)
2000	6.7 C (44.1 F)
2001	6.7 C (44.1 F)
2002	6.7 C (44.1 F)
2003	7.8 C (46.0 F)
2004	5.6 C (42.1 F)
2005	7.8 C (46.0 F)
2006	7.8 C (46.0 F)
2007	5.0 C (41.0 F)
2008	7.8 C (46.0 F)
2011	1.7 C (35.1 F)

Wettest day (Rx1day)

The wettest day of the year at Rancho Santa Rosa, 1979 to 2011. The record is 336.3 mm (13.2 in) in 1990, marked on the chart; the median year is 95.3 mm (3.8 in).

Wettest day (Rx1day) at Rancho Santa Rosa by year
Year	Wettest day (Rx1day)
1979	82.3 mm (3.2 in)
1980	86.9 mm (3.4 in)
1981	142.5 mm (5.6 in)
1982	48.8 mm (1.9 in)
1983	61.0 mm (2.4 in)
1984	95.3 mm (3.8 in)
1985	147.3 mm (5.8 in)
1986	72.9 mm (2.9 in)
1987	40.9 mm (1.6 in)
1988	4.3 mm (0.17 in)
1989	108.5 mm (4.3 in)
1990	336.3 mm (13.2 in)
1991	172.5 mm (6.8 in)
1992	87.4 mm (3.4 in)
1993	311.4 mm (12.3 in)
1994	79.2 mm (3.1 in)
1995	18.3 mm (0.7 in)
1996	8.9 mm (0.35 in)
1997	74.4 mm (2.9 in)
1998	115.3 mm (4.5 in)
1999	114.3 mm (4.5 in)
2000	95.3 mm (3.8 in)
2001	91.4 mm (3.6 in)
2002	99.3 mm (3.9 in)
2003	114.3 mm (4.5 in)
2004	156.5 mm (6.2 in)
2005	141.5 mm (5.6 in)
2006	58.4 mm (2.3 in)
2007	112.3 mm (4.4 in)
2008	140.5 mm (5.5 in)
2011	139.4 mm (5.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Rancho Santa Rosa, 1979 to 2011. The record is 537.5 mm (21.2 in) in 1990, marked on the chart; the median year is 170.7 mm (6.7 in).

Wettest five days (Rx5day) at Rancho Santa Rosa by year
Year	Wettest five days (Rx5day)
1979	164.1 mm (6.5 in)
1980	198.1 mm (7.8 in)
1981	289.8 mm (11.4 in)
1982	72.9 mm (2.9 in)
1983	141.0 mm (5.6 in)
1984	203.2 mm (8.0 in)
1985	186.5 mm (7.3 in)
1986	87.1 mm (3.4 in)
1987	52.3 mm (2.1 in)
1988	7.4 mm (0.29 in)
1989	157.8 mm (6.2 in)
1990	537.5 mm (21.2 in)
1991	371.2 mm (14.6 in)
1992	121.4 mm (4.8 in)
1993	500.6 mm (19.7 in)
1994	160.0 mm (6.3 in)
1995	19.6 mm (0.8 in)
1996	10.2 mm (0.4 in)
1997	170.7 mm (6.7 in)
1998	184.7 mm (7.3 in)
1999	177.3 mm (7.0 in)
2000	149.6 mm (5.9 in)
2001	113.0 mm (4.4 in)
2002	167.5 mm (6.6 in)
2003	218.9 mm (8.6 in)
2004	179.6 mm (7.1 in)
2005	251.0 mm (9.9 in)
2006	87.6 mm (3.4 in)
2007	283.8 mm (11.2 in)
2008	183.7 mm (7.2 in)
2011	434.7 mm (17.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Rancho Santa Rosa, 1979 to 2011. The record is 70 days in 2003, marked on the chart; the median year is 36 days.

Longest dry spell (CDD) at Rancho Santa Rosa by year
Year	Longest dry spell (CDD)
1979	40 days
1980	41 days
1981	32 days
1982	22 days
1983	47 days
1984	62 days
1985	22 days
1986	41 days
1987	17 days
1988	22 days
1989	48 days
1990	22 days
1991	33 days
1992	23 days
1993	24 days
1994	19 days
1995	25 days
1996	20 days
1997	20 days
1998	69 days
1999	38 days
2000	36 days
2001	24 days
2002	39 days
2003	70 days
2004	36 days
2005	31 days
2006	44 days
2007	45 days
2008	37 days
2011	41 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.

Download the Data

Data for Rancho Santa Rosa standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Rancho Santa Rosa 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).