Rayon Weather Records (MXN00024060)

Record envelope, standing records and threshold days for Rayon (MXN00024060), Mexico, with 51 years of record.

Key Facts for Rayon

Rayon (MXN00024060) is a weather station in Mexico at 21.83 latitude and -99.63 longitude, 972 m (3,188 ft) above sea level.
The station reports from 1961 to 2011, 51 years of record.
1,464 records set at Rayon still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Rayon tied a daily record high maximum temperature of 35.0 C (95.0 F) on 26 September 2011.

About the Station

Location: Mexico, 21.83 latitude, -99.63 longitude.
Elevation: 972 m (3,188 ft).
Period of record: 1961 to 2011, 51 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 Rayon. 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 Rayon, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	36.7 C (98.1 F)	-3.3 C (26.1 F)	n/a	n/a
Feb	37.8 C (100.0 F)	-4.4 C (24.1 F)	n/a	n/a
Mar	41.7 C (107.1 F)	0.0 C (32.0 F)	n/a	n/a
Apr	43.9 C (111.0 F)	2.8 C (37.0 F)	n/a	n/a
May	45.0 C (113.0 F)	6.7 C (44.1 F)	n/a	n/a
Jun	43.9 C (111.0 F)	10.0 C (50.0 F)	n/a	n/a
Jul	40.6 C (105.1 F)	8.9 C (48.0 F)	n/a	n/a
Aug	40.0 C (104.0 F)	10.0 C (50.0 F)	n/a	n/a
Sep	40.0 C (104.0 F)	6.7 C (44.1 F)	n/a	n/a
Oct	35.6 C (96.1 F)	1.7 C (35.1 F)	n/a	n/a
Nov	35.6 C (96.1 F)	0.0 C (32.0 F)	n/a	n/a
Dec	35.6 C (96.1 F)	-5.0 C (23.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Rayon still stand. 1965 holds the most, with 108.

Standing records at Rayon by the year they were set
Year set	Standing records
1961	53
1962	74
1963	88
1964	36
1965	108
1966	35
1967	32
1968	30
1969	43
1970	53
1971	23
1972	28
1973	48
1974	22
1975	28
1976	45
1977	41
1978	30
1979	39
1980	38
1981	15
1982	24
1983	42
1984	30
1987	31
1988	17
1989	39
1990	21
1991	28
1992	21
1993	17
1996	24
1997	14
1998	29
1999	13
2000	9
2001	9
2002	21
2003	14
2004	15
2005	17
2006	9
2007	23
2008	45
2009	12
2010	17
2011	14

All-Time Record Progression

2 new records

2 all-time records were set at Rayon between 20 September 1993 and 7 May 1998. Each dot is a new record.

When Rayon set new all-time records
Date	Kind	Detail
1993-09-20	Record daily precipitation	Record daily precipitation 329.9 mm (13.0 in)
1998-05-07	Record high maximum temperature	Record high maximum temperature 45.0 C (113.0 F)

Wettest Day of Each Month

Sep: 329.9 mm (13.0 in)

The wettest day on record for each calendar month at Rayon. The most was 329.9 mm (13.0 in) on 20 September 1993.

Record daily precipitation for each month at Rayon
Month	Record daily precipitation (mm)	Date
Jan	31.8 mm (1.3 in)	19 January 1975
Feb	35.3 mm (1.4 in)	3 February 2010
Mar	22.9 mm (0.9 in)	3 March 1968
Apr	46.5 mm (1.8 in)	19 April 1982
May	66.8 mm (2.6 in)	26 May 1980
Jun	82.8 mm (3.3 in)	1 June 1992
Jul	126.0 mm (5.0 in)	18 July 2011
Aug	157.0 mm (6.2 in)	7 August 1990
Sep	329.9 mm (13.0 in)	20 September 1993
Oct	72.9 mm (2.9 in)	6 October 2000
Nov	114.8 mm (4.5 in)	17 November 1990
Dec	42.4 mm (1.7 in)	3 December 1979

Period of Record Coverage

1961 to 2011

47 years of record at Rayon, 1961 to 2011. 2 years have data for under 90 percent of days and are left out of rankings: 1997, 2011.

Days with data per year at Rayon
Year	Days with data	Share of year	Complete
1961	363	99%	Yes
1962	363	99%	Yes
1963	364	100%	Yes
1964	336	92%	Yes
1965	364	100%	Yes
1966	365	100%	Yes
1967	359	98%	Yes
1968	364	99%	Yes
1969	358	98%	Yes
1970	363	99%	Yes
1971	363	99%	Yes
1972	364	99%	Yes
1973	361	99%	Yes
1974	364	100%	Yes
1975	363	99%	Yes
1976	364	99%	Yes
1977	363	99%	Yes
1978	364	100%	Yes
1979	359	98%	Yes
1980	360	98%	Yes
1981	364	100%	Yes
1982	363	99%	Yes
1983	363	99%	Yes
1984	332	91%	Yes
1987	363	99%	Yes
1988	365	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	363	99%	Yes
1992	335	92%	Yes
1993	363	99%	Yes
1996	362	99%	Yes
1997	303	83%	No
1998	364	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	364	100%	Yes
2003	363	99%	Yes
2004	360	98%	Yes
2005	365	100%	Yes
2006	364	100%	Yes
2007	364	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	273	75%	No

Latest Records

Latest records at Rayon
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
26 September 2011	Rayon, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	34 years	3 of 100 (Routine)
10 September 2011	Rayon, MX	daily low min (Tie)	10.6 C (51.1 F)	tie	45 years	4 of 100 (Routine)
3 September 2011	Rayon, MX	daily high min (Tie)	18.9 C (66.0 F)	tie	42 years	4 of 100 (Routine)
13 August 2011	Rayon, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	32 years	3 of 100 (Routine)
12 August 2011	Rayon, MX	daily high min (Tie)	20.6 C (69.1 F)	tie	32 years	3 of 100 (Routine)
11 August 2011	Rayon, MX	daily high min	21.7 C (71.1 F)	1.7 C (3.1 F)	32 years	23 of 100 (Routine)
11 August 2011	Rayon, MX	daily high max (Tie)	35.6 C (96.1 F)	tie	8 years	1 of 100 (Routine)
9 August 2011	Rayon, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	48 years	4 of 100 (Routine)
1 August 2011	Rayon, MX	daily rain	24.9 mm (1.0 in)	10.9 mm (0.4 in)	45 years	20 of 100 (Routine)
18 July 2011	Rayon, MX	monthly rain	126.0 mm (5.0 in)	6.1 mm (0.24 in)	12 years	22 of 100 (Routine)
18 July 2011	Rayon, MX	daily low max	22.8 C (73.0 F)	1.1 C (2.0 F)	40 years	20 of 100 (Routine)
14 July 2011	Rayon, MX	daily rain	21.8 mm (0.9 in)	7.8 mm (0.31 in)	26 years	18 of 100 (Routine)
12 July 2011	Rayon, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	44 years	4 of 100 (Routine)
11 July 2011	Rayon, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	34 years	3 of 100 (Routine)
2 July 2011	Rayon, MX	daily rain	80.8 mm (3.2 in)	20.9 mm (0.8 in)	0 years	18 of 100 (Routine)
1 July 2011	Rayon, MX	daily rain	91.9 mm (3.6 in)	60.1 mm (2.4 in)	40 years	57 of 100 (Notable)
22 June 2011	Rayon, MX	daily high max	36.7 C (98.1 F)	1.1 C (2.0 F)	28 years	15 of 100 (Routine)
21 June 2011	Rayon, MX	daily high min	22.8 C (73.0 F)	2.2 C (4.0 F)	28 years	23 of 100 (Routine)
21 June 2011	Rayon, MX	daily high max (Tie)	36.7 C (98.1 F)	tie	24 years	3 of 100 (Routine)
7 June 2011	Rayon, MX	daily low min (Tie)	15.0 C (59.0 F)	tie	45 years	4 of 100 (Routine)

Climate Trend

42 complete years, 1961 to 2010

One stripe for each of 42 complete years at Rayon, 1961 to 2010. Blue stripes are years cooler than the station's own mean of 21.3 C (70.3 F); red stripes are warmer. The coolest year was 1966, at 19.9 C (67.8 F), and the warmest was 2006, at 22.4 C (72.2 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Rayon as warming stripes, 1961 to 2010
Year	Annual mean temperature	Difference from the station mean
1961	22.2 C	+0.91 C
1962	20.8 C	-0.50 C
1963	21.9 C	+0.63 C
1965	20.5 C	-0.77 C
1966	19.9 C	-1.38 C
1967	20.6 C	-0.66 C
1968	20.6 C	-0.66 C
1969	21.5 C	+0.28 C
1970	20.2 C	-1.01 C
1971	20.9 C	-0.32 C
1972	21.3 C	+0.07 C
1973	21.6 C	+0.37 C
1974	21.3 C	+0.04 C
1975	21.2 C	-0.04 C
1976	20.8 C	-0.44 C
1977	21.8 C	+0.58 C
1978	21.7 C	+0.43 C
1979	21.3 C	+0.01 C
1980	21.7 C	+0.46 C
1981	21.2 C	-0.01 C
1982	22.3 C	+1.09 C
1983	21.9 C	+0.62 C
1987	20.4 C	-0.85 C
1988	20.7 C	-0.51 C
1989	20.8 C	-0.46 C
1990	20.8 C	-0.49 C
1991	21.4 C	+0.10 C
1993	20.8 C	-0.44 C
1996	21.3 C	+0.01 C
1998	22.0 C	+0.77 C
1999	20.9 C	-0.35 C
2000	21.2 C	-0.09 C
2001	21.1 C	-0.16 C
2002	21.3 C	+0.02 C
2003	22.2 C	+0.93 C
2004	21.4 C	+0.14 C
2005	21.3 C	+0.03 C
2006	22.4 C	+1.10 C
2007	21.5 C	+0.21 C
2008	21.9 C	+0.60 C
2009	22.0 C	+0.70 C
2010	20.3 C	-0.92 C

The fitted trend in annual mean temperature here over 1961 to 2010 is 0.09 C (-0.03 to 0.21) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Rayon
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.09 C (-0.03 to 0.21) per decade	0.2 F (-0.1 to 0.4) per decade	1961 to 2010	42	Not clearly different from zero
Mean daily maximum	0.04 C (-0.14 to 0.23) per decade	0.1 F (-0.3 to 0.4) per decade	1961 to 2010	42	Not clearly different from zero
Mean daily minimum	0.14 C (-0.02 to 0.30) per decade	0.25 F (-0.03 to 0.53) per decade	1961 to 2010	42	Not clearly different from zero

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

1961 to 2011

Yearly extremes at Rayon: 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)	1998	40.6 C (105.1 F)	47
Coldest night (TNn)	-5.0 C (23.0 F)	1989	0.0 C (32.0 F)	47
Wettest day (Rx1day)	329.9 mm (13.0 in)	1993	66.8 mm (2.6 in)	47
Wettest five days (Rx5day)	402.0 mm (15.8 in)	1993	130.3 mm (5.1 in)	47
Longest dry spell (CDD)	134 days	2008	66 days	47

Hottest day (TXx)

The hottest day of the year at Rayon, 1961 to 2011. The record is 45.0 C (113.0 F) in 1998, marked on the chart; the median year is 40.6 C (105.1 F).

Hottest day (TXx) at Rayon by year
Year	Hottest day (TXx)
1961	42.8 C (109.0 F)
1962	40.6 C (105.1 F)
1963	42.8 C (109.0 F)
1964	40.0 C (104.0 F)
1965	40.6 C (105.1 F)
1966	36.7 C (98.1 F)
1967	42.8 C (109.0 F)
1968	37.8 C (100.0 F)
1969	40.0 C (104.0 F)
1970	40.6 C (105.1 F)
1971	41.7 C (107.1 F)
1972	40.0 C (104.0 F)
1973	43.9 C (111.0 F)
1974	43.9 C (111.0 F)
1975	40.0 C (104.0 F)
1976	40.6 C (105.1 F)
1977	41.7 C (107.1 F)
1978	41.7 C (107.1 F)
1979	40.0 C (104.0 F)
1980	40.6 C (105.1 F)
1981	40.0 C (104.0 F)
1982	42.8 C (109.0 F)
1983	43.9 C (111.0 F)
1984	42.8 C (109.0 F)
1987	37.8 C (100.0 F)
1988	40.0 C (104.0 F)
1989	40.6 C (105.1 F)
1990	40.6 C (105.1 F)
1991	40.6 C (105.1 F)
1992	35.6 C (96.1 F)
1993	38.9 C (102.0 F)
1996	38.9 C (102.0 F)
1997	38.9 C (102.0 F)
1998	45.0 C (113.0 F)
1999	40.6 C (105.1 F)
2000	40.0 C (104.0 F)
2001	40.6 C (105.1 F)
2002	42.8 C (109.0 F)
2003	43.9 C (111.0 F)
2004	41.7 C (107.1 F)
2005	40.6 C (105.1 F)
2006	40.6 C (105.1 F)
2007	40.0 C (104.0 F)
2008	42.8 C (109.0 F)
2009	40.0 C (104.0 F)
2010	40.0 C (104.0 F)
2011	42.8 C (109.0 F)

Coldest night (TNn)

The coldest night of the year at Rayon, 1961 to 2011. The record is -5.0 C (23.0 F) in 1989, marked on the chart; the median year is 0.0 C (32.0 F).

Coldest night (TNn) at Rayon by year
Year	Coldest night (TNn)
1961	2.8 C (37.0 F)
1962	-2.2 C (28.0 F)
1963	0.0 C (32.0 F)
1964	0.0 C (32.0 F)
1965	0.0 C (32.0 F)
1966	0.6 C (33.1 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	0.6 C (33.1 F)
1972	2.8 C (37.0 F)
1973	-4.4 C (24.1 F)
1974	0.6 C (33.1 F)
1975	-3.3 C (26.1 F)
1976	-4.4 C (24.1 F)
1977	-2.2 C (28.0 F)
1978	1.7 C (35.1 F)
1979	-3.3 C (26.1 F)
1980	0.6 C (33.1 F)
1981	1.7 C (35.1 F)
1982	1.7 C (35.1 F)
1983	-3.3 C (26.1 F)
1984	2.8 C (37.0 F)
1987	0.0 C (32.0 F)
1988	-0.6 C (30.9 F)
1989	-5.0 C (23.0 F)
1990	0.0 C (32.0 F)
1991	3.9 C (39.0 F)
1992	0.0 C (32.0 F)
1993	-0.6 C (30.9 F)
1996	-1.1 C (30.0 F)
1997	0.6 C (33.1 F)
1998	1.7 C (35.1 F)
1999	-2.2 C (28.0 F)
2000	-0.6 C (30.9 F)
2001	0.0 C (32.0 F)
2002	0.0 C (32.0 F)
2003	0.0 C (32.0 F)
2004	-2.2 C (28.0 F)
2005	2.8 C (37.0 F)
2006	1.7 C (35.1 F)
2007	1.7 C (35.1 F)
2008	1.7 C (35.1 F)
2009	1.7 C (35.1 F)
2010	-1.1 C (30.0 F)
2011	0.6 C (33.1 F)

Wettest day (Rx1day)

The wettest day of the year at Rayon, 1961 to 2011. The record is 329.9 mm (13.0 in) in 1993, marked on the chart; the median year is 66.8 mm (2.6 in).

Wettest day (Rx1day) at Rayon by year
Year	Wettest day (Rx1day)
1961	54.9 mm (2.2 in)
1962	80.8 mm (3.2 in)
1963	37.1 mm (1.5 in)
1964	68.8 mm (2.7 in)
1965	77.0 mm (3.0 in)
1966	53.8 mm (2.1 in)
1967	55.9 mm (2.2 in)
1968	39.9 mm (1.6 in)
1969	152.9 mm (6.0 in)
1970	75.9 mm (3.0 in)
1971	50.8 mm (2.0 in)
1972	61.0 mm (2.4 in)
1973	71.9 mm (2.8 in)
1974	79.0 mm (3.1 in)
1975	58.9 mm (2.3 in)
1976	104.9 mm (4.1 in)
1977	65.8 mm (2.6 in)
1978	118.9 mm (4.7 in)
1979	66.3 mm (2.6 in)
1980	67.8 mm (2.7 in)
1981	81.8 mm (3.2 in)
1982	66.8 mm (2.6 in)
1983	63.8 mm (2.5 in)
1984	50.8 mm (2.0 in)
1987	47.0 mm (1.9 in)
1988	59.9 mm (2.4 in)
1989	71.9 mm (2.8 in)
1990	157.0 mm (6.2 in)
1991	89.9 mm (3.5 in)
1992	82.8 mm (3.3 in)
1993	329.9 mm (13.0 in)
1996	68.3 mm (2.7 in)
1997	63.5 mm (2.5 in)
1998	47.8 mm (1.9 in)
1999	119.9 mm (4.7 in)
2000	72.9 mm (2.9 in)
2001	95.3 mm (3.8 in)
2002	45.0 mm (1.8 in)
2003	47.0 mm (1.9 in)
2004	62.0 mm (2.4 in)
2005	57.9 mm (2.3 in)
2006	33.3 mm (1.3 in)
2007	96.8 mm (3.8 in)
2008	64.8 mm (2.6 in)
2009	44.5 mm (1.8 in)
2010	75.9 mm (3.0 in)
2011	126.0 mm (5.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Rayon, 1961 to 2011. The record is 402.0 mm (15.8 in) in 1993, marked on the chart; the median year is 130.3 mm (5.1 in).

Wettest five days (Rx5day) at Rayon by year
Year	Wettest five days (Rx5day)
1961	150.5 mm (5.9 in)
1962	91.2 mm (3.6 in)
1963	37.1 mm (1.5 in)
1964	70.6 mm (2.8 in)
1965	86.3 mm (3.4 in)
1966	130.3 mm (5.1 in)
1967	162.4 mm (6.4 in)
1968	78.5 mm (3.1 in)
1969	391.5 mm (15.4 in)
1970	136.6 mm (5.4 in)
1971	117.8 mm (4.6 in)
1972	131.6 mm (5.2 in)
1973	116.9 mm (4.6 in)
1974	181.9 mm (7.2 in)
1975	142.5 mm (5.6 in)
1976	147.8 mm (5.8 in)
1977	101.4 mm (4.0 in)
1978	222.2 mm (8.7 in)
1979	140.8 mm (5.5 in)
1980	162.8 mm (6.4 in)
1981	157.8 mm (6.2 in)
1982	100.3 mm (3.9 in)
1983	131.2 mm (5.2 in)
1984	110.2 mm (4.3 in)
1987	77.0 mm (3.0 in)
1988	93.5 mm (3.7 in)
1989	85.7 mm (3.4 in)
1990	204.8 mm (8.1 in)
1991	153.4 mm (6.0 in)
1992	109.6 mm (4.3 in)
1993	402.0 mm (15.8 in)
1996	148.1 mm (5.8 in)
1997	104.9 mm (4.1 in)
1998	97.5 mm (3.8 in)
1999	184.9 mm (7.3 in)
2000	110.9 mm (4.4 in)
2001	221.5 mm (8.7 in)
2002	82.6 mm (3.3 in)
2003	67.5 mm (2.7 in)
2004	74.9 mm (2.9 in)
2005	109.0 mm (4.3 in)
2006	40.4 mm (1.6 in)
2007	194.0 mm (7.6 in)
2008	249.4 mm (9.8 in)
2009	95.3 mm (3.8 in)
2010	186.2 mm (7.3 in)
2011	263.4 mm (10.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Rayon, 1961 to 2011. The record is 134 days in 2008, marked on the chart; the median year is 66 days.

Longest dry spell (CDD) at Rayon by year
Year	Longest dry spell (CDD)
1961	128 days
1962	105 days
1963	126 days
1964	98 days
1965	36 days
1966	42 days
1967	50 days
1968	32 days
1969	42 days
1970	69 days
1971	67 days
1972	72 days
1973	47 days
1974	34 days
1975	111 days
1976	58 days
1977	58 days
1978	49 days
1979	42 days
1980	87 days
1981	33 days
1982	52 days
1983	63 days
1984	95 days
1987	50 days
1988	66 days
1989	44 days
1990	64 days
1991	110 days
1992	38 days
1993	44 days
1996	113 days
1997	30 days
1998	84 days
1999	84 days
2000	103 days
2001	74 days
2002	57 days
2003	102 days
2004	38 days
2005	99 days
2006	122 days
2007	56 days
2008	134 days
2009	94 days
2010	78 days
2011	83 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

45 years, 1961 to 2010

A day with at least 64.5 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 262.6 mm (10.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Rayon: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	64.5 mm (2.5 in)
5 years	92.1 mm (3.6 in)
10 years	117.7 mm (4.6 in)
25 years	161.9 mm (6.4 in)
50 years	206.1 mm (8.1 in)	Longer than the 45 years of record
100 years	262.6 mm (10.3 in)	Longer than the 45 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, 45 years of values from 1961 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: 329.9 mm (13.0 in) in 1993; 157.0 mm (6.2 in) in 1990; 152.9 mm (6.0 in) in 1969.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Rayon, at 1987. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1987 ran 0.5 C (0.9 F) lower than in the years before (likely change).

Suspected changes in the annual mean temperature at Rayon, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1987	-0.5	-0.9	likely	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

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