McAllen Weather Records (USC00415701)

Record envelope, standing records and threshold days for McAllen (USC00415701), Texas, United States, with 86 years of record.

Key Facts for McAllen

McAllen (USC00415701) is a weather station in Texas, United States at 26.19 latitude and -98.25 longitude, 34 m (110 ft) above sea level.
The station reports from 1941 to 2026, 86 years of record.
1,464 records set at McAllen still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
McAllen set a daily record precipitation of 56.6 mm (2.2 in) on 2 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: Texas, United States, 26.19 latitude, -98.25 longitude.
Elevation: 34 m (110 ft).
Period of record: 1941 to 2026, 86 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

12 days at or beyond a record

The band shows the record high and record low for each calendar day at McAllen. The lines show the 2026 daily maximum and minimum. 12 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at McAllen, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	33.9 C (93.0 F)	-8.3 C (17.1 F)	32.8 C (91.0 F)	-1.7 C (28.9 F)
Feb	37.8 C (100.0 F)	-7.2 C (19.0 F)	36.1 C (97.0 F)	3.9 C (39.0 F)
Mar	40.0 C (104.0 F)	-0.6 C (30.9 F)	38.9 C (102.0 F)	10.6 C (51.1 F)
Apr	42.8 C (109.0 F)	3.9 C (39.0 F)	35.0 C (95.0 F)	11.7 C (53.1 F)
May	43.3 C (109.9 F)	4.4 C (39.9 F)	37.2 C (99.0 F)	16.1 C (61.0 F)
Jun	42.8 C (109.0 F)	15.6 C (60.1 F)	36.7 C (98.1 F)	20.0 C (68.0 F)
Jul	41.7 C (107.1 F)	16.7 C (62.1 F)	41.1 C (106.0 F)	22.2 C (72.0 F)
Aug	41.1 C (106.0 F)	13.9 C (57.0 F)	39.4 C (102.9 F)	23.3 C (73.9 F)
Sep	42.2 C (108.0 F)	10.0 C (50.0 F)	38.9 C (102.0 F)	24.4 C (75.9 F)
Oct	40.6 C (105.1 F)	5.6 C (42.1 F)	36.7 C (98.1 F)	24.4 C (75.9 F)
Nov	36.7 C (98.1 F)	-1.1 C (30.0 F)	n/a	n/a
Dec	35.0 C (95.0 F)	-7.8 C (18.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at McAllen still stand. 1974 holds the most, with 42.

Standing records at McAllen by the year they were set
Year set	Standing records
1941	5
1942	21
1943	16
1944	18
1945	28
1946	22
1947	19
1948	33
1949	20
1950	21
1951	15
1952	25
1953	10
1954	11
1955	21
1956	10
1957	18
1958	13
1959	21
1960	16
1961	17
1962	22
1963	13
1964	12
1965	13
1966	14
1967	11
1968	11
1969	12
1970	23
1971	15
1972	12
1973	18
1974	42
1975	25
1976	25
1977	7
1978	10
1979	15
1980	17
1981	8
1982	22
1983	15
1984	14
1985	26
1986	9
1987	12
1988	7
1989	31
1990	8
1991	11
1992	12
1993	3
1994	2
1995	11
1996	20
1997	16
1998	16
1999	10
2000	20
2001	18
2002	4
2003	19
2004	11
2005	18
2006	8
2007	15
2008	14
2009	24
2010	3
2011	21
2012	18
2013	14
2014	19
2015	12
2016	27
2017	19
2018	18
2019	35
2020	14
2021	19
2022	11
2023	35
2024	39
2025	39
2026	20

All-Time Record Progression

6 new records

6 all-time records were set at McAllen between 10 August 1980 and 10 May 2024. Each dot is a new record.

When McAllen set new all-time records
Date	Kind	Detail
1980-08-10	Record daily precipitation	Record daily precipitation 198.4 mm (7.8 in)
1998-06-15	Record high maximum temperature	Record high maximum temperature 42.2 C (108.0 F)
1999-05-05	Record high maximum temperature	Record high maximum temperature 42.8 C (109.0 F)
2004-12-25	Record daily snowfall	Record daily snowfall 4.3 cm (1.7 in)
2004-12-25	Record snow depth	Record snow depth 5.1 cm (2.0 in)
2024-05-10	Record high maximum temperature	Record high maximum temperature 43.3 C (109.9 F)

Wettest Day of Each Month

Aug: 198.4 mm (7.8 in)

The wettest day on record for each calendar month at McAllen. The most was 198.4 mm (7.8 in) on 10 August 1980.

Record daily precipitation for each month at McAllen
Month	Record daily precipitation (mm)	Date
Jan	107.2 mm (4.2 in)	5 January 1958
Feb	133.4 mm (5.3 in)	25 February 1983
Mar	84.3 mm (3.3 in)	14 March 1972
Apr	154.9 mm (6.1 in)	9 April 1954
May	113.8 mm (4.5 in)	4 May 1981
Jun	120.7 mm (4.8 in)	23 June 1942
Jul	197.6 mm (7.8 in)	24 July 2008
Aug	198.4 mm (7.8 in)	10 August 1980
Sep	153.9 mm (6.1 in)	22 September 1967
Oct	127.0 mm (5.0 in)	15 October 1966
Nov	51.6 mm (2.0 in)	2 November 2002
Dec	55.4 mm (2.2 in)	31 December 1957

Period of Record Coverage

1941 to 2026

86 years of record at McAllen, 1941 to 2026. 13 years have data for under 90 percent of days and are left out of rankings: 1941, 1987, 1988, 1993, 1994, 2002, 2009, 2011 and others.

Days with data per year at McAllen
Year	Days with data	Share of year	Complete
1941	214	59%	No
1942	364	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	358	98%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	364	100%	Yes
1954	365	100%	Yes
1955	364	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	365	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	365	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	363	99%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	361	99%	Yes
1971	363	99%	Yes
1972	365	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	334	92%	Yes
1976	331	90%	Yes
1977	364	100%	Yes
1978	332	91%	Yes
1979	360	99%	Yes
1980	359	98%	Yes
1981	354	97%	Yes
1982	362	99%	Yes
1983	363	99%	Yes
1984	364	99%	Yes
1985	363	99%	Yes
1986	357	98%	Yes
1987	328	90%	No
1988	303	83%	No
1989	329	90%	Yes
1990	331	91%	Yes
1991	356	98%	Yes
1992	364	99%	Yes
1993	198	54%	No
1994	31	8%	No
1995	362	99%	Yes
1996	353	96%	Yes
1997	359	98%	Yes
1998	347	95%	Yes
1999	358	98%	Yes
2000	334	91%	Yes
2001	352	96%	Yes
2002	325	89%	No
2003	354	97%	Yes
2004	351	96%	Yes
2005	357	98%	Yes
2006	355	97%	Yes
2007	354	97%	Yes
2008	354	97%	Yes
2009	321	88%	No
2010	331	91%	Yes
2011	307	84%	No
2012	337	92%	Yes
2013	339	93%	Yes
2014	324	89%	No
2015	339	93%	Yes
2016	334	91%	Yes
2017	272	75%	No
2018	337	92%	Yes
2019	349	96%	Yes
2020	341	93%	Yes
2021	357	98%	Yes
2022	354	97%	Yes
2023	326	89%	No
2024	323	88%	No
2025	353	97%	Yes
2026	274	75%	No

Latest Records

Latest records at McAllen
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 October 2026	McAllen, US	daily rain (Provisional)	56.6 mm (2.2 in)	39.6 mm (1.6 in)	80 years	55 of 100 (Notable)
1 October 2026	McAllen, US	daily high min (Provisional)	27.2 C (81.0 F)	1.1 C (2.0 F)	40 years	22 of 100 (Routine)
1 October 2026	McAllen, US	daily high max (Tie, Provisional)	36.7 C (98.1 F)	tie	64 years	6 of 100 (Routine)
30 September 2026	McAllen, US	daily high min (Provisional)	27.2 C (81.0 F)	1.1 C (2.0 F)	7 years	14 of 100 (Routine)
29 September 2026	McAllen, US	daily high min (Provisional)	26.7 C (80.1 F)	0.6 C (1.1 F)	67 years	30 of 100 (Routine)
28 September 2026	McAllen, US	daily high min (Provisional)	26.7 C (80.1 F)	0.6 C (1.1 F)	67 years	30 of 100 (Routine)
27 September 2026	McAllen, US	daily high min (Provisional)	26.7 C (80.1 F)	1.1 C (2.0 F)	67 years	32 of 100 (Routine)
26 September 2026	McAllen, US	daily high min (Provisional)	27.8 C (82.0 F)	1.7 C (3.1 F)	3 years	14 of 100 (Routine)
25 September 2026	McAllen, US	daily high min (Tie, Provisional)	26.7 C (80.1 F)	tie	9 years	2 of 100 (Routine)
24 September 2026	McAllen, US	daily high min (Tie, Provisional)	27.2 C (81.0 F)	tie	20 years	3 of 100 (Routine)
23 September 2026	McAllen, US	daily high min (Provisional)	27.8 C (82.0 F)	1.7 C (3.1 F)	25 years	21 of 100 (Routine)
22 September 2026	McAllen, US	daily high min (Provisional)	27.8 C (82.0 F)	1.7 C (3.1 F)	16 years	19 of 100 (Routine)
22 September 2026	McAllen, US	daily high max (Tie, Provisional)	38.3 C (100.9 F)	tie	9 years	2 of 100 (Routine)
20 September 2026	McAllen, US	daily high min (Tie, Provisional)	26.7 C (80.1 F)	tie	29 years	4 of 100 (Routine)
19 September 2026	McAllen, US	daily high min (Tie, Provisional)	27.2 C (81.0 F)	tie	29 years	4 of 100 (Routine)
17 September 2026	McAllen, US	daily high min (Provisional)	26.7 C (80.1 F)	0.6 C (1.1 F)	61 years	28 of 100 (Routine)
16 September 2026	McAllen, US	daily high min (Provisional)	26.7 C (80.1 F)	0.6 C (1.1 F)	76 years	32 of 100 (Routine)
14 September 2026	McAllen, US	monthly high min (Tie, Provisional)	28.9 C (84.0 F)	tie	41 years	7 of 100 (Routine)
13 September 2026	McAllen, US	daily high min (Provisional)	27.8 C (82.0 F)	1.7 C (3.1 F)	48 years	28 of 100 (Routine)
12 September 2026	McAllen, US	daily high min (Provisional)	27.2 C (81.0 F)	1.6 C (2.9 F)	36 years	25 of 100 (Routine)

Climate Trend

64 complete years, 1942 to 2025

One stripe for each of 64 complete years at McAllen, 1942 to 2025. Blue stripes are years cooler than the station's own mean of 23.5 C (74.4 F); red stripes are warmer. The coolest year was 1966, at 22.3 C (72.2 F), and the warmest was 2024, at 25.8 C (78.4 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at McAllen as warming stripes, 1942 to 2025
Year	Annual mean temperature	Difference from the station mean
1942	23.2 C	-0.35 C
1943	23.0 C	-0.58 C
1944	23.1 C	-0.40 C
1945	24.4 C	+0.85 C
1946	23.3 C	-0.22 C
1947	22.9 C	-0.68 C
1948	23.2 C	-0.39 C
1949	23.7 C	+0.15 C
1950	24.6 C	+1.07 C
1951	23.6 C	+0.06 C
1952	23.0 C	-0.55 C
1953	23.8 C	+0.27 C
1954	23.7 C	+0.18 C
1955	23.3 C	-0.27 C
1956	23.4 C	-0.15 C
1957	23.9 C	+0.39 C
1958	22.6 C	-0.99 C
1959	22.6 C	-0.91 C
1960	22.7 C	-0.80 C
1961	22.9 C	-0.61 C
1962	23.6 C	+0.06 C
1963	22.7 C	-0.88 C
1964	23.2 C	-0.34 C
1965	23.5 C	-0.09 C
1966	22.3 C	-1.23 C
1967	23.0 C	-0.58 C
1968	22.4 C	-1.19 C
1969	23.1 C	-0.47 C
1970	22.3 C	-1.23 C
1971	23.4 C	-0.18 C
1972	23.4 C	-0.17 C
1973	22.8 C	-0.71 C
1974	22.9 C	-0.60 C
1977	22.8 C	-0.78 C
1979	22.4 C	-1.15 C
1981	23.5 C	-0.06 C
1983	22.7 C	-0.82 C
1984	23.1 C	-0.41 C
1985	23.3 C	-0.27 C
1986	23.7 C	+0.11 C
1991	23.1 C	-0.47 C
1992	22.7 C	-0.81 C
1995	23.5 C	-0.08 C
1996	23.7 C	+0.17 C
1997	23.2 C	-0.36 C
1998	24.3 C	+0.75 C
1999	24.4 C	+0.81 C
2001	24.0 C	+0.45 C
2003	24.1 C	+0.51 C
2004	23.5 C	-0.07 C
2005	24.4 C	+0.88 C
2006	24.9 C	+1.36 C
2007	24.1 C	+0.59 C
2008	24.2 C	+0.69 C
2010	23.4 C	-0.12 C
2012	25.7 C	+2.13 C
2013	24.2 C	+0.66 C
2015	24.1 C	+0.56 C
2019	24.4 C	+0.83 C
2020	24.6 C	+1.09 C
2021	24.2 C	+0.61 C
2022	23.9 C	+0.38 C
2024	25.8 C	+2.24 C
2025	25.5 C	+1.97 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1942 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 64 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at McAllen
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.1 to 0.2) per decade	0.3 F (0.2 to 0.4) per decade	1942 to 2025	64	Rise
Mean daily maximum	0.09 C (0.02 to 0.17) per decade	0.17 F (0.04 to 0.30) per decade	1942 to 2025	64	Rise
Mean daily minimum	0.3 C (0.2 to 0.3) per decade	0.5 F (0.4 to 0.6) per decade	1942 to 2025	64	Rise

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

1941 to 2026

Yearly extremes at McAllen: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	2024	39.4 C (102.9 F)	86
Coldest night (TNn)	-8.3 C (17.1 F)	1962	-1.1 C (30.0 F)	86
Wettest day (Rx1day)	198.4 mm (7.8 in)	1980	63.7 mm (2.5 in)	86
Wettest five days (Rx5day)	401.3 mm (15.8 in)	1967	91.1 mm (3.6 in)	86
Longest dry spell (CDD)	168 days	1998	43 days	86

Hottest day (TXx)

The hottest day of the year at McAllen, 1941 to 2026. The record is 43.3 C (109.9 F) in 2024, marked on the chart; the median year is 39.4 C (102.9 F).

Hottest day (TXx) at McAllen by year
Year	Hottest day (TXx)
1941	38.3 C (100.9 F)
1942	40.0 C (104.0 F)
1943	40.0 C (104.0 F)
1944	39.4 C (102.9 F)
1945	39.4 C (102.9 F)
1946	40.6 C (105.1 F)
1947	38.9 C (102.0 F)
1948	41.1 C (106.0 F)
1949	40.0 C (104.0 F)
1950	38.3 C (100.9 F)
1951	37.8 C (100.0 F)
1952	38.3 C (100.9 F)
1953	38.9 C (102.0 F)
1954	39.4 C (102.9 F)
1955	40.6 C (105.1 F)
1956	37.8 C (100.0 F)
1957	38.3 C (100.9 F)
1958	39.4 C (102.9 F)
1959	38.3 C (100.9 F)
1960	38.3 C (100.9 F)
1961	38.9 C (102.0 F)
1962	40.0 C (104.0 F)
1963	40.6 C (105.1 F)
1964	39.4 C (102.9 F)
1965	38.9 C (102.0 F)
1966	39.4 C (102.9 F)
1967	40.0 C (104.0 F)
1968	38.9 C (102.0 F)
1969	39.4 C (102.9 F)
1970	38.9 C (102.0 F)
1971	37.8 C (100.0 F)
1972	38.3 C (100.9 F)
1973	40.0 C (104.0 F)
1974	41.1 C (106.0 F)
1975	37.2 C (99.0 F)
1976	38.3 C (100.9 F)
1977	39.4 C (102.9 F)
1978	39.4 C (102.9 F)
1979	41.1 C (106.0 F)
1980	40.6 C (105.1 F)
1981	39.4 C (102.9 F)
1982	38.3 C (100.9 F)
1983	39.4 C (102.9 F)
1984	40.6 C (105.1 F)
1985	39.4 C (102.9 F)
1986	38.9 C (102.0 F)
1987	37.8 C (100.0 F)
1988	38.9 C (102.0 F)
1989	38.9 C (102.0 F)
1990	37.8 C (100.0 F)
1991	38.3 C (100.9 F)
1992	38.9 C (102.0 F)
1993	38.3 C (100.9 F)
1994	31.1 C (88.0 F)
1995	39.4 C (102.9 F)
1996	40.6 C (105.1 F)
1997	40.6 C (105.1 F)
1998	42.2 C (108.0 F)
1999	42.8 C (109.0 F)
2000	42.2 C (108.0 F)
2001	39.4 C (102.9 F)
2002	39.4 C (102.9 F)
2003	41.1 C (106.0 F)
2004	40.6 C (105.1 F)
2005	40.6 C (105.1 F)
2006	40.0 C (104.0 F)
2007	38.9 C (102.0 F)
2008	39.4 C (102.9 F)
2009	41.7 C (107.1 F)
2010	38.3 C (100.9 F)
2011	41.1 C (106.0 F)
2012	41.1 C (106.0 F)
2013	40.6 C (105.1 F)
2014	42.8 C (109.0 F)
2015	40.0 C (104.0 F)
2016	40.0 C (104.0 F)
2017	42.8 C (109.0 F)
2018	40.0 C (104.0 F)
2019	41.1 C (106.0 F)
2020	38.9 C (102.0 F)
2021	37.8 C (100.0 F)
2022	42.2 C (108.0 F)
2023	41.7 C (107.1 F)
2024	43.3 C (109.9 F)
2025	39.4 C (102.9 F)
2026	41.1 C (106.0 F)

Coldest night (TNn)

The coldest night of the year at McAllen, 1941 to 2026. The record is -8.3 C (17.1 F) in 1962, marked on the chart; the median year is -1.1 C (30.0 F).

Coldest night (TNn) at McAllen by year
Year	Coldest night (TNn)
1941	5.0 C (41.0 F)
1942	-1.7 C (28.9 F)
1943	-2.8 C (27.0 F)
1944	-2.8 C (27.0 F)
1945	1.7 C (35.1 F)
1946	-1.1 C (30.0 F)
1947	-1.1 C (30.0 F)
1948	-2.2 C (28.0 F)
1949	-5.6 C (21.9 F)
1950	-3.3 C (26.1 F)
1951	-7.2 C (19.0 F)
1952	1.1 C (34.0 F)
1953	-1.1 C (30.0 F)
1954	1.1 C (34.0 F)
1955	-2.2 C (28.0 F)
1956	0.0 C (32.0 F)
1957	-3.3 C (26.1 F)
1958	-2.2 C (28.0 F)
1959	-1.1 C (30.0 F)
1960	-1.7 C (28.9 F)
1961	-0.6 C (30.9 F)
1962	-8.3 C (17.1 F)
1963	-3.9 C (25.0 F)
1964	-1.1 C (30.0 F)
1965	1.1 C (34.0 F)
1966	-2.8 C (27.0 F)
1967	-0.6 C (30.9 F)
1968	-0.6 C (30.9 F)
1969	-1.1 C (30.0 F)
1970	-2.2 C (28.0 F)
1971	-0.6 C (30.9 F)
1972	0.0 C (32.0 F)
1973	-3.9 C (25.0 F)
1974	0.6 C (33.1 F)
1975	-3.9 C (25.0 F)
1976	-2.2 C (28.0 F)
1977	-1.7 C (28.9 F)
1978	-2.2 C (28.0 F)
1979	-4.4 C (24.1 F)
1980	-0.6 C (30.9 F)
1981	1.7 C (35.1 F)
1982	-2.8 C (27.0 F)
1983	-7.8 C (18.0 F)
1984	0.0 C (32.0 F)
1985	-4.4 C (24.1 F)
1986	2.2 C (36.0 F)
1987	2.8 C (37.0 F)
1988	0.6 C (33.1 F)
1989	-7.8 C (18.0 F)
1990	-1.7 C (28.9 F)
1991	1.7 C (35.1 F)
1992	1.7 C (35.1 F)
1993	3.3 C (37.9 F)
1994	3.9 C (39.0 F)
1995	2.8 C (37.0 F)
1996	-2.8 C (27.0 F)
1997	-1.1 C (30.0 F)
1998	0.6 C (33.1 F)
1999	1.7 C (35.1 F)
2000	1.1 C (34.0 F)
2001	1.1 C (34.0 F)
2002	-1.7 C (28.9 F)
2003	0.6 C (33.1 F)
2004	-3.9 C (25.0 F)
2005	1.1 C (34.0 F)
2006	1.7 C (35.1 F)
2007	1.1 C (34.0 F)
2008	1.7 C (35.1 F)
2009	0.0 C (32.0 F)
2010	-2.8 C (27.0 F)
2011	-3.3 C (26.1 F)
2012	3.3 C (37.9 F)
2013	2.2 C (36.0 F)
2014	0.0 C (32.0 F)
2015	2.2 C (36.0 F)
2016	2.8 C (37.0 F)
2017	-1.7 C (28.9 F)
2018	0.0 C (32.0 F)
2019	2.8 C (37.0 F)
2020	-1.1 C (30.0 F)
2021	-6.7 C (19.9 F)
2022	-1.7 C (28.9 F)
2023	2.8 C (37.0 F)
2024	-3.3 C (26.1 F)
2025	-2.8 C (27.0 F)
2026	-1.7 C (28.9 F)

Wettest day (Rx1day)

The wettest day of the year at McAllen, 1941 to 2026. The record is 198.4 mm (7.8 in) in 1980, marked on the chart; the median year is 63.7 mm (2.5 in).

Wettest day (Rx1day) at McAllen by year
Year	Wettest day (Rx1day)
1941	68.6 mm (2.7 in)
1942	120.7 mm (4.8 in)
1943	65.3 mm (2.6 in)
1944	57.7 mm (2.3 in)
1945	42.2 mm (1.7 in)
1946	67.3 mm (2.6 in)
1947	53.8 mm (2.1 in)
1948	72.9 mm (2.9 in)
1949	27.2 mm (1.1 in)
1950	44.2 mm (1.7 in)
1951	108.7 mm (4.3 in)
1952	44.5 mm (1.8 in)
1953	52.8 mm (2.1 in)
1954	154.9 mm (6.1 in)
1955	50.5 mm (2.0 in)
1956	35.6 mm (1.4 in)
1957	55.4 mm (2.2 in)
1958	107.2 mm (4.2 in)
1959	34.5 mm (1.4 in)
1960	78.2 mm (3.1 in)
1961	87.9 mm (3.5 in)
1962	46.2 mm (1.8 in)
1963	88.4 mm (3.5 in)
1964	20.1 mm (0.8 in)
1965	74.9 mm (2.9 in)
1966	127.0 mm (5.0 in)
1967	153.9 mm (6.1 in)
1968	44.5 mm (1.8 in)
1969	29.0 mm (1.1 in)
1970	113.8 mm (4.5 in)
1971	59.7 mm (2.4 in)
1972	84.3 mm (3.3 in)
1973	144.0 mm (5.7 in)
1974	106.2 mm (4.2 in)
1975	98.8 mm (3.9 in)
1976	64.3 mm (2.5 in)
1977	54.4 mm (2.1 in)
1978	57.4 mm (2.3 in)
1979	91.9 mm (3.6 in)
1980	198.4 mm (7.8 in)
1981	113.8 mm (4.5 in)
1982	72.4 mm (2.9 in)
1983	133.4 mm (5.3 in)
1984	59.9 mm (2.4 in)
1985	81.3 mm (3.2 in)
1986	62.5 mm (2.5 in)
1987	82.8 mm (3.3 in)
1988	70.9 mm (2.8 in)
1989	46.7 mm (1.8 in)
1990	78.2 mm (3.1 in)
1991	53.6 mm (2.1 in)
1992	108.2 mm (4.3 in)
1993	63.8 mm (2.5 in)
1994	0.0 mm (0.00 in)
1995	46.5 mm (1.8 in)
1996	36.8 mm (1.4 in)
1997	63.5 mm (2.5 in)
1998	48.3 mm (1.9 in)
1999	51.1 mm (2.0 in)
2000	50.0 mm (2.0 in)
2001	88.9 mm (3.5 in)
2002	51.6 mm (2.0 in)
2003	61.0 mm (2.4 in)
2004	53.3 mm (2.1 in)
2005	111.3 mm (4.4 in)
2006	50.3 mm (2.0 in)
2007	81.3 mm (3.2 in)
2008	197.6 mm (7.8 in)
2009	36.8 mm (1.4 in)
2010	101.6 mm (4.0 in)
2011	33.0 mm (1.3 in)
2012	25.4 mm (1.0 in)
2013	42.2 mm (1.7 in)
2014	68.1 mm (2.7 in)
2015	76.2 mm (3.0 in)
2016	52.1 mm (2.1 in)
2017	19.8 mm (0.8 in)
2018	63.5 mm (2.5 in)
2019	55.9 mm (2.2 in)
2020	185.4 mm (7.3 in)
2021	120.7 mm (4.8 in)
2022	78.7 mm (3.1 in)
2023	50.8 mm (2.0 in)
2024	101.6 mm (4.0 in)
2025	76.2 mm (3.0 in)
2026	63.5 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at McAllen, 1941 to 2026. The record is 401.3 mm (15.8 in) in 1967, marked on the chart; the median year is 91.1 mm (3.6 in).

Wettest five days (Rx5day) at McAllen by year
Year	Wettest five days (Rx5day)
1941	94.7 mm (3.7 in)
1942	156.3 mm (6.2 in)
1943	112.0 mm (4.4 in)
1944	104.6 mm (4.1 in)
1945	63.2 mm (2.5 in)
1946	87.6 mm (3.4 in)
1947	142.7 mm (5.6 in)
1948	153.1 mm (6.0 in)
1949	51.6 mm (2.0 in)
1950	51.8 mm (2.0 in)
1951	139.2 mm (5.5 in)
1952	53.9 mm (2.1 in)
1953	71.0 mm (2.8 in)
1954	187.6 mm (7.4 in)
1955	59.2 mm (2.3 in)
1956	48.8 mm (1.9 in)
1957	86.6 mm (3.4 in)
1958	173.3 mm (6.8 in)
1959	45.5 mm (1.8 in)
1960	80.3 mm (3.2 in)
1961	99.1 mm (3.9 in)
1962	67.2 mm (2.6 in)
1963	91.9 mm (3.6 in)
1964	39.8 mm (1.6 in)
1965	121.3 mm (4.8 in)
1966	178.6 mm (7.0 in)
1967	401.3 mm (15.8 in)
1968	59.5 mm (2.3 in)
1969	56.9 mm (2.2 in)
1970	133.4 mm (5.3 in)
1971	114.1 mm (4.5 in)
1972	130.6 mm (5.1 in)
1973	204.0 mm (8.0 in)
1974	133.6 mm (5.3 in)
1975	201.9 mm (7.9 in)
1976	161.9 mm (6.4 in)
1977	164.0 mm (6.5 in)
1978	88.0 mm (3.5 in)
1979	127.2 mm (5.0 in)
1980	320.1 mm (12.6 in)
1981	123.5 mm (4.9 in)
1982	122.7 mm (4.8 in)
1983	133.4 mm (5.3 in)
1984	81.0 mm (3.2 in)
1985	81.8 mm (3.2 in)
1986	76.7 mm (3.0 in)
1987	90.2 mm (3.6 in)
1988	56.1 mm (2.2 in)
1989	57.9 mm (2.3 in)
1990	92.7 mm (3.6 in)
1991	66.8 mm (2.6 in)
1992	111.8 mm (4.4 in)
1993	129.4 mm (5.1 in)
1994	0.0 mm (0.00 in)
1995	63.3 mm (2.5 in)
1996	63.8 mm (2.5 in)
1997	138.9 mm (5.5 in)
1998	87.7 mm (3.5 in)
1999	87.6 mm (3.4 in)
2000	58.7 mm (2.3 in)
2001	117.8 mm (4.6 in)
2002	61.5 mm (2.4 in)
2003	133.1 mm (5.2 in)
2004	88.6 mm (3.5 in)
2005	146.1 mm (5.8 in)
2006	71.9 mm (2.8 in)
2007	83.8 mm (3.3 in)
2008	199.4 mm (7.9 in)
2009	59.7 mm (2.4 in)
2010	114.3 mm (4.5 in)
2011	45.7 mm (1.8 in)
2012	49.8 mm (2.0 in)
2013	87.1 mm (3.4 in)
2014	129.1 mm (5.1 in)
2015	88.4 mm (3.5 in)
2016	67.3 mm (2.6 in)
2017	28.7 mm (1.1 in)
2018	145.6 mm (5.7 in)
2019	57.1 mm (2.2 in)
2020	185.4 mm (7.3 in)
2021	196.3 mm (7.7 in)
2022	110.0 mm (4.3 in)
2023	69.1 mm (2.7 in)
2024	137.1 mm (5.4 in)
2025	78.2 mm (3.1 in)
2026	118.1 mm (4.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at McAllen, 1941 to 2026. The record is 168 days in 1998, marked on the chart; the median year is 43 days.

Longest dry spell (CDD) at McAllen by year
Year	Longest dry spell (CDD)
1941	23 days
1942	65 days
1943	67 days
1944	45 days
1945	40 days
1946	56 days
1947	60 days
1948	49 days
1949	28 days
1950	84 days
1951	39 days
1952	48 days
1953	48 days
1954	51 days
1955	38 days
1956	38 days
1957	56 days
1958	45 days
1959	43 days
1960	33 days
1961	42 days
1962	48 days
1963	42 days
1964	47 days
1965	40 days
1966	67 days
1967	35 days
1968	36 days
1969	40 days
1970	62 days
1971	36 days
1972	34 days
1973	38 days
1974	45 days
1975	37 days
1976	51 days
1977	60 days
1978	40 days
1979	68 days
1980	42 days
1981	58 days
1982	57 days
1983	54 days
1984	46 days
1985	33 days
1986	42 days
1987	27 days
1988	33 days
1989	52 days
1990	52 days
1991	37 days
1992	23 days
1993	22 days
1994	31 days
1995	55 days
1996	96 days
1997	91 days
1998	168 days
1999	86 days
2000	53 days
2001	59 days
2002	57 days
2003	47 days
2004	57 days
2005	139 days
2006	49 days
2007	37 days
2008	91 days
2009	71 days
2010	97 days
2011	33 days
2012	34 days
2013	20 days
2014	19 days
2015	26 days
2016	41 days
2017	33 days
2018	34 days
2019	17 days
2020	31 days
2021	39 days
2022	24 days
2023	24 days
2024	29 days
2025	30 days
2026	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.

Frost Dates and Growing Season

20 years with a frost

Across 20 years with a frost, the median last spring frost at McAllen falls on 4 February and the median first autumn frost on 16 December, which leaves a median of 314 days between them.

Frost dates and growing season at McAllen
Measure	Median, all years	Earliest period	Recent period (1942 to 2022)	Recent against earliest	Fitted trend
Last spring frost	4 February	n/a	4 February	n/a	n/a
First autumn frost	16 December	n/a	16 December	n/a	n/a
Growing days	314 days	n/a	314 days	n/a	n/a

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

74 years, 1942 to 2025

A day with at least 68.3 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 225.7 mm (8.9 in) of rain is expected about once in 100 years.

Rainfall return levels at McAllen: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	68.3 mm (2.7 in)
5 years	101.5 mm (4.0 in)
10 years	126.7 mm (5.0 in)
25 years	162.7 mm (6.4 in)
50 years	192.7 mm (7.6 in)
100 years	225.7 mm (8.9 in)	Longer than the 74 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, 74 years of values from 1942 to 2025.

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: 198.4 mm (7.8 in) in 1980; 197.6 mm (7.8 in) in 2008; 185.4 mm (7.3 in) in 2020.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2004 to 2025 against 1961 to 1990

Over 2004 to 2025, McAllen had a mean temperature of 24.5 C (76.0 F) and 543.7 mm (21.4 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are El Novillo (Cfe) (Mexico, 1,163 km away), El Pilon (Mexico, 235 km away) and La Estrella (Mexico, 1,162 km away).

Climate twins of McAllen: stations whose 1961 to 1990 climate is closest to its 2004 to 2025 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
El Novillo (Cfe)	Mexico	1,163 km (723 mi)	24.5 C (76.2 F)	561.7 mm (22.1 in)	0.99
El Pilon	Mexico	235 km (146 mi)	24.3 C (75.7 F)	665.8 mm (26.2 in)	1.00
La Estrella	Mexico	1,162 km (722 mi)	24.2 C (75.5 F)	643.3 mm (25.3 in)	1.07

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for McAllen standing records by year: CSV or JSON. Field meanings are on the data page.
Data for McAllen 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).