San Francisco de Los Romo (Dg Weather Records (MXN00001083)

Record envelope, standing records and threshold days for San Francisco de Los Romo (Dg (MXN00001083), Mexico, with 35 years of record.

Key Facts for San Francisco de Los Romo (Dg

San Francisco de Los Romo (Dg (MXN00001083) is a weather station in Mexico at 22.07 latitude and -102.27 longitude, 1,909 m (6,263 ft) above sea level.
The station reports from 1979 to 2013, 35 years of record.
1,464 records set at San Francisco de Los Romo (Dg still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
San Francisco de Los Romo (Dg set a daily record high minimum temperature of 17.8 C (64.0 F) on 21 September 2013.

About the Station

Location: Mexico, 22.07 latitude, -102.27 longitude.
Elevation: 1,909 m (6,263 ft).
Period of record: 1979 to 2013, 35 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 Francisco de Los Romo (Dg. 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 Francisco de Los Romo (Dg, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	31.7 C (89.1 F)	-6.1 C (21.0 F)	n/a	n/a
Feb	32.8 C (91.0 F)	-5.0 C (23.0 F)	n/a	n/a
Mar	35.0 C (95.0 F)	-2.2 C (28.0 F)	n/a	n/a
Apr	38.9 C (102.0 F)	0.6 C (33.1 F)	n/a	n/a
May	38.9 C (102.0 F)	5.0 C (41.0 F)	n/a	n/a
Jun	38.9 C (102.0 F)	6.7 C (44.1 F)	n/a	n/a
Jul	35.0 C (95.0 F)	10.0 C (50.0 F)	n/a	n/a
Aug	35.6 C (96.1 F)	8.9 C (48.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	5.0 C (41.0 F)	n/a	n/a
Oct	33.9 C (93.0 F)	0.6 C (33.1 F)	n/a	n/a
Nov	31.1 C (88.0 F)	-4.4 C (24.1 F)	n/a	n/a
Dec	33.9 C (93.0 F)	-7.2 C (19.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Francisco de Los Romo (Dg still stand. 1983 holds the most, with 86.

Standing records at San Francisco de Los Romo (Dg by the year they were set
Year set	Standing records
1979	48
1980	61
1981	54
1982	74
1983	86
1984	43
1985	45
1986	52
1987	52
1988	21
1989	32
1990	73
1991	38
1992	23
1993	18
1994	50
1995	59
1996	15
1997	29
1998	40
1999	32
2000	18
2001	20
2002	19
2003	32
2004	46
2005	42
2006	30
2007	27
2008	16
2009	30
2010	83
2011	71
2012	43
2013	42

All-Time Record Progression

2 new records

2 all-time records were set at San Francisco de Los Romo (Dg between 19 January 2011 and 14 June 2013. Each dot is a new record.

When San Francisco de Los Romo (Dg set new all-time records
Date	Kind	Detail
2011-01-19	Record low maximum temperature	Record low maximum temperature 5.0 C (41.0 F)
2013-06-14	Record daily precipitation	Record daily precipitation 122.2 mm (4.8 in)

Wettest Day of Each Month

Jun: 122.2 mm (4.8 in)

The wettest day on record for each calendar month at San Francisco de Los Romo (Dg. The most was 122.2 mm (4.8 in) on 14 June 2013.

Record daily precipitation for each month at San Francisco de Los Romo (Dg
Month	Record daily precipitation (mm)	Date
Jan	61.7 mm (2.4 in)	1 January 2013
Feb	39.4 mm (1.6 in)	3 February 2010
Mar	25.9 mm (1.0 in)	2 March 2001
Apr	20.8 mm (0.8 in)	13 April 2008
May	40.9 mm (1.6 in)	27 May 1989
Jun	122.2 mm (4.8 in)	14 June 2013
Jul	61.0 mm (2.4 in)	1 July 1991
Aug	79.8 mm (3.1 in)	10 August 1985
Sep	49.8 mm (2.0 in)	16 September 1991
Oct	71.9 mm (2.8 in)	7 October 1986
Nov	30.0 mm (1.2 in)	3 November 2002
Dec	42.9 mm (1.7 in)	2 December 1979

Period of Record Coverage

1979 to 2013

35 years of record at San Francisco de Los Romo (Dg, 1979 to 2013. 9 years have data for under 90 percent of days and are left out of rankings: 1979, 1980, 1981, 1982, 1990, 2007, 2011, 2012 and others.

Days with data per year at San Francisco de Los Romo (Dg
Year	Days with data	Share of year	Complete
1979	122	33%	No
1980	245	67%	No
1981	247	68%	No
1982	302	83%	No
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	364	100%	Yes
1988	366	100%	Yes
1989	334	92%	Yes
1990	256	70%	No
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	364	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	364	100%	Yes
2003	365	100%	Yes
2004	346	95%	Yes
2005	355	97%	Yes
2006	365	100%	Yes
2007	305	84%	No
2008	364	99%	Yes
2009	359	98%	Yes
2010	356	98%	Yes
2011	319	87%	No
2012	294	80%	No
2013	266	73%	No

Latest Records

Latest records at San Francisco de Los Romo (Dg
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 2013	San Francisco de Los Romo (Dg, MX	daily high min	17.8 C (64.0 F)	1.1 C (2.0 F)	14 years	12 of 100 (Routine)
20 September 2013	San Francisco de Los Romo (Dg, MX	daily high min (Tie)	17.8 C (64.0 F)	tie	10 years	1 of 100 (Routine)
19 September 2013	San Francisco de Los Romo (Dg, MX	daily rain	14.5 mm (0.6 in)	5.1 mm (0.20 in)	2 years	8 of 100 (Routine)
19 September 2013	San Francisco de Los Romo (Dg, MX	daily high min (Tie)	16.7 C (62.1 F)	tie	15 years	1 of 100 (Routine)
17 September 2013	San Francisco de Los Romo (Dg, MX	daily rain	27.9 mm (1.1 in)	18.0 mm (0.7 in)	2 years	21 of 100 (Routine)
17 September 2013	San Francisco de Los Romo (Dg, MX	daily high min	16.7 C (62.1 F)	1.1 C (2.0 F)	24 years	15 of 100 (Routine)
15 September 2013	San Francisco de Los Romo (Dg, MX	daily low max	20.0 C (68.0 F)	0.6 C (1.1 F)	15 years	8 of 100 (Routine)
9 September 2013	San Francisco de Los Romo (Dg, MX	daily low max	20.0 C (68.0 F)	1.7 C (3.1 F)	12 years	11 of 100 (Routine)
8 September 2013	San Francisco de Los Romo (Dg, MX	daily low max	18.9 C (66.0 F)	1.1 C (2.0 F)	12 years	9 of 100 (Routine)
7 September 2013	San Francisco de Los Romo (Dg, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	12 years	1 of 100 (Routine)
6 September 2013	San Francisco de Los Romo (Dg, MX	daily low max	16.7 C (62.1 F)	3.3 C (5.9 F)	12 years	16 of 100 (Routine)
5 September 2013	San Francisco de Los Romo (Dg, MX	daily low max	17.8 C (64.0 F)	3.3 C (5.9 F)	24 years	20 of 100 (Routine)
5 September 2013	San Francisco de Los Romo (Dg, MX	daily high min (Tie)	15.6 C (60.1 F)	tie	30 years	3 of 100 (Routine)
4 September 2013	San Francisco de Los Romo (Dg, MX	daily low max	17.8 C (64.0 F)	2.2 C (4.0 F)	2 years	10 of 100 (Routine)
26 August 2013	San Francisco de Los Romo (Dg, MX	daily low max (Tie)	21.7 C (71.1 F)	tie	6 years	1 of 100 (Routine)
13 August 2013	San Francisco de Los Romo (Dg, MX	daily low max	20.6 C (69.1 F)	1.1 C (2.0 F)	8 years	9 of 100 (Routine)
12 August 2013	San Francisco de Los Romo (Dg, MX	daily low max	20.6 C (69.1 F)	2.7 C (4.9 F)	28 years	21 of 100 (Routine)
10 August 2013	San Francisco de Los Romo (Dg, MX	daily low max (Tie)	21.7 C (71.1 F)	tie	28 years	2 of 100 (Routine)
9 August 2013	San Francisco de Los Romo (Dg, MX	daily low max (Tie)	21.7 C (71.1 F)	tie	16 years	1 of 100 (Routine)
8 August 2013	San Francisco de Los Romo (Dg, MX	daily high min	17.8 C (64.0 F)	2.2 C (4.0 F)	30 years	25 of 100 (Routine)

Climate Trend

23 complete years, 1983 to 2010

One stripe for each of 23 complete years at San Francisco de Los Romo (Dg, 1983 to 2010. Blue stripes are years cooler than the station's own mean of 18.0 C (64.4 F); red stripes are warmer. The coolest year was 1987, at 16.7 C (62.1 F), and the warmest was 1995, at 19.4 C (67.0 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at San Francisco de Los Romo (Dg as warming stripes, 1983 to 2010
Year	Annual mean temperature	Difference from the station mean
1983	18.0 C	-0.01 C
1984	18.3 C	+0.32 C
1985	17.9 C	-0.07 C
1986	16.9 C	-1.12 C
1987	16.7 C	-1.25 C
1988	16.8 C	-1.21 C
1991	17.9 C	-0.11 C
1992	17.5 C	-0.46 C
1993	18.1 C	+0.07 C
1994	19.1 C	+1.08 C
1995	19.4 C	+1.44 C
1996	18.7 C	+0.70 C
1997	18.3 C	+0.31 C
1998	18.7 C	+0.68 C
1999	18.8 C	+0.86 C
2000	18.0 C	-0.01 C
2001	17.5 C	-0.53 C
2002	18.5 C	+0.53 C
2003	18.1 C	+0.14 C
2006	17.4 C	-0.60 C
2008	17.7 C	-0.33 C
2009	18.4 C	+0.46 C
2010	17.0 C	-0.94 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 2013

Yearly extremes at San Francisco de Los Romo (Dg: 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)	1980	35.0 C (95.0 F)	35
Coldest night (TNn)	-7.2 C (19.0 F)	1997	-2.8 C (27.0 F)	35
Wettest day (Rx1day)	122.2 mm (4.8 in)	2013	39.9 mm (1.6 in)	35
Wettest five days (Rx5day)	154.0 mm (6.1 in)	2013	71.7 mm (2.8 in)	35
Longest dry spell (CDD)	155 days	1999	86 days	35

Hottest day (TXx)

The hottest day of the year at San Francisco de Los Romo (Dg, 1979 to 2013. The record is 38.9 C (102.0 F) in 1980, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at San Francisco de Los Romo (Dg by year
Year	Hottest day (TXx)
1979	33.9 C (93.0 F)
1980	38.9 C (102.0 F)
1981	33.9 C (93.0 F)
1982	36.7 C (98.1 F)
1983	38.9 C (102.0 F)
1984	35.6 C (96.1 F)
1985	33.9 C (93.0 F)
1986	35.0 C (95.0 F)
1987	35.0 C (95.0 F)
1988	33.9 C (93.0 F)
1989	35.0 C (95.0 F)
1990	35.6 C (96.1 F)
1991	35.6 C (96.1 F)
1992	33.9 C (93.0 F)
1993	34.4 C (93.9 F)
1994	33.9 C (93.0 F)
1995	35.6 C (96.1 F)
1996	33.9 C (93.0 F)
1997	35.6 C (96.1 F)
1998	35.6 C (96.1 F)
1999	35.0 C (95.0 F)
2000	35.6 C (96.1 F)
2001	33.9 C (93.0 F)
2002	35.0 C (95.0 F)
2003	37.8 C (100.0 F)
2004	35.0 C (95.0 F)
2005	38.9 C (102.0 F)
2006	33.9 C (93.0 F)
2007	35.6 C (96.1 F)
2008	35.6 C (96.1 F)
2009	36.7 C (98.1 F)
2010	36.7 C (98.1 F)
2011	32.8 C (91.0 F)
2012	31.7 C (89.1 F)
2013	33.9 C (93.0 F)

Coldest night (TNn)

The coldest night of the year at San Francisco de Los Romo (Dg, 1979 to 2013. The record is -7.2 C (19.0 F) in 1997, marked on the chart; the median year is -2.8 C (27.0 F).

Coldest night (TNn) at San Francisco de Los Romo (Dg by year
Year	Coldest night (TNn)
1979	0.6 C (33.1 F)
1980	0.0 C (32.0 F)
1981	-3.3 C (26.1 F)
1982	-5.0 C (23.0 F)
1983	-4.4 C (24.1 F)
1984	-2.2 C (28.0 F)
1985	-4.4 C (24.1 F)
1986	-3.3 C (26.1 F)
1987	-5.0 C (23.0 F)
1988	-2.2 C (28.0 F)
1989	-1.1 C (30.0 F)
1990	-2.8 C (27.0 F)
1991	-3.3 C (26.1 F)
1992	-1.1 C (30.0 F)
1993	-2.2 C (28.0 F)
1994	0.0 C (32.0 F)
1995	0.0 C (32.0 F)
1996	0.0 C (32.0 F)
1997	-7.2 C (19.0 F)
1998	-3.3 C (26.1 F)
1999	-3.3 C (26.1 F)
2000	-3.3 C (26.1 F)
2001	-3.3 C (26.1 F)
2002	-2.2 C (28.0 F)
2003	-5.0 C (23.0 F)
2004	-3.3 C (26.1 F)
2005	-1.1 C (30.0 F)
2006	-6.1 C (21.0 F)
2007	0.0 C (32.0 F)
2008	-3.3 C (26.1 F)
2009	-0.6 C (30.9 F)
2010	-2.2 C (28.0 F)
2011	-4.4 C (24.1 F)
2012	0.0 C (32.0 F)
2013	-1.1 C (30.0 F)

Wettest day (Rx1day)

The wettest day of the year at San Francisco de Los Romo (Dg, 1979 to 2013. The record is 122.2 mm (4.8 in) in 2013, marked on the chart; the median year is 39.9 mm (1.6 in).

Wettest day (Rx1day) at San Francisco de Los Romo (Dg by year
Year	Wettest day (Rx1day)
1979	42.9 mm (1.7 in)
1980	21.8 mm (0.9 in)
1981	30.0 mm (1.2 in)
1982	33.8 mm (1.3 in)
1983	42.9 mm (1.7 in)
1984	39.9 mm (1.6 in)
1985	79.8 mm (3.1 in)
1986	71.9 mm (2.8 in)
1987	86.9 mm (3.4 in)
1988	26.9 mm (1.1 in)
1989	40.9 mm (1.6 in)
1990	17.3 mm (0.7 in)
1991	61.0 mm (2.4 in)
1992	48.3 mm (1.9 in)
1993	25.9 mm (1.0 in)
1994	36.3 mm (1.4 in)
1995	36.8 mm (1.4 in)
1996	31.8 mm (1.3 in)
1997	43.4 mm (1.7 in)
1998	28.4 mm (1.1 in)
1999	47.0 mm (1.9 in)
2000	34.8 mm (1.4 in)
2001	49.3 mm (1.9 in)
2002	34.8 mm (1.4 in)
2003	47.0 mm (1.9 in)
2004	48.8 mm (1.9 in)
2005	44.7 mm (1.8 in)
2006	34.8 mm (1.4 in)
2007	42.9 mm (1.7 in)
2008	32.8 mm (1.3 in)
2009	37.8 mm (1.5 in)
2010	39.4 mm (1.6 in)
2011	37.8 mm (1.5 in)
2012	41.9 mm (1.6 in)
2013	122.2 mm (4.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Francisco de Los Romo (Dg, 1979 to 2013. The record is 154.0 mm (6.1 in) in 2013, marked on the chart; the median year is 71.7 mm (2.8 in).

Wettest five days (Rx5day) at San Francisco de Los Romo (Dg by year
Year	Wettest five days (Rx5day)
1979	71.9 mm (2.8 in)
1980	30.8 mm (1.2 in)
1981	53.9 mm (2.1 in)
1982	86.7 mm (3.4 in)
1983	94.2 mm (3.7 in)
1984	71.7 mm (2.8 in)
1985	94.8 mm (3.7 in)
1986	152.8 mm (6.0 in)
1987	86.9 mm (3.4 in)
1988	67.8 mm (2.7 in)
1989	42.4 mm (1.7 in)
1990	17.6 mm (0.7 in)
1991	148.3 mm (5.8 in)
1992	93.8 mm (3.7 in)
1993	55.6 mm (2.2 in)
1994	57.7 mm (2.3 in)
1995	68.4 mm (2.7 in)
1996	77.6 mm (3.1 in)
1997	80.2 mm (3.2 in)
1998	62.9 mm (2.5 in)
1999	64.6 mm (2.5 in)
2000	57.4 mm (2.3 in)
2001	73.5 mm (2.9 in)
2002	75.5 mm (3.0 in)
2003	69.9 mm (2.8 in)
2004	89.2 mm (3.5 in)
2005	63.2 mm (2.5 in)
2006	58.8 mm (2.3 in)
2007	76.3 mm (3.0 in)
2008	74.0 mm (2.9 in)
2009	49.3 mm (1.9 in)
2010	95.0 mm (3.7 in)
2011	43.4 mm (1.7 in)
2012	70.0 mm (2.8 in)
2013	154.0 mm (6.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Francisco de Los Romo (Dg, 1979 to 2013. The record is 155 days in 1999, marked on the chart; the median year is 86 days.

Longest dry spell (CDD) at San Francisco de Los Romo (Dg by year
Year	Longest dry spell (CDD)
1979	78 days
1980	56 days
1981	31 days
1982	81 days
1983	127 days
1984	90 days
1985	97 days
1986	77 days
1987	96 days
1988	66 days
1989	107 days
1990	69 days
1991	83 days
1992	61 days
1993	82 days
1994	86 days
1995	95 days
1996	113 days
1997	50 days
1998	114 days
1999	155 days
2000	140 days
2001	56 days
2002	58 days
2003	117 days
2004	64 days
2005	110 days
2006	52 days
2007	85 days
2008	99 days
2009	79 days
2010	96 days
2011	105 days
2012	100 days
2013	131 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 San Francisco de Los Romo (Dg standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Francisco de Los Romo (Dg 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).