Weslaco Weather Records (USC00419588)
Record envelope, standing records and threshold days for Weslaco (USC00419588), Texas, United States, with 113 years of record.
Key Facts for Weslaco
- Weslaco (USC00419588) is a weather station in Texas, United States at 26.18 latitude and -97.97 longitude, 23 m (75 ft) above sea level.
- The station reports from 1914 to 2026, 113 years of record.
- 1,464 records set at Weslaco still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Weslaco set a daily record precipitation of 55.9 mm (2.2 in) on 5 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, 26.18 latitude, -97.97 longitude.
- Elevation: 23 m (75 ft).
- Period of record: 1914 to 2026, 113 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
30 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 33.9 C (93.0 F) | -8.9 C (16.0 F) | 31.7 C (89.1 F) | -2.8 C (27.0 F) |
| Feb | 37.8 C (100.0 F) | -6.7 C (19.9 F) | 35.0 C (95.0 F) | 2.8 C (37.0 F) |
| Mar | 40.0 C (104.0 F) | -3.3 C (26.1 F) | 37.2 C (99.0 F) | 9.4 C (48.9 F) |
| Apr | 43.3 C (109.9 F) | 0.6 C (33.1 F) | 35.6 C (96.1 F) | 11.7 C (53.1 F) |
| May | 42.2 C (108.0 F) | 8.3 C (46.9 F) | 36.7 C (98.1 F) | 15.0 C (59.0 F) |
| Jun | 41.7 C (107.1 F) | 11.7 C (53.1 F) | 37.2 C (99.0 F) | 23.3 C (73.9 F) |
| Jul | 42.2 C (108.0 F) | 16.7 C (62.1 F) | 41.1 C (106.0 F) | 24.4 C (75.9 F) |
| Aug | 41.1 C (106.0 F) | 16.7 C (62.1 F) | 40.0 C (104.0 F) | 22.8 C (73.0 F) |
| Sep | 41.7 C (107.1 F) | 8.9 C (48.0 F) | 39.4 C (102.9 F) | 23.3 C (73.9 F) |
| Oct | 40.0 C (104.0 F) | 0.6 C (33.1 F) | 37.2 C (99.0 F) | 21.1 C (70.0 F) |
| Nov | 37.2 C (99.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Dec | 34.4 C (93.9 F) | -8.9 C (16.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1914 | 6 |
| 1915 | 26 |
| 1916 | 23 |
| 1917 | 26 |
| 1918 | 25 |
| 1919 | 14 |
| 1920 | 20 |
| 1921 | 21 |
| 1922 | 9 |
| 1923 | 9 |
| 1924 | 21 |
| 1925 | 14 |
| 1926 | 10 |
| 1927 | 24 |
| 1928 | 10 |
| 1929 | 10 |
| 1930 | 22 |
| 1931 | 7 |
| 1932 | 15 |
| 1933 | 24 |
| 1934 | 14 |
| 1935 | 12 |
| 1936 | 22 |
| 1937 | 27 |
| 1938 | 20 |
| 1939 | 13 |
| 1940 | 28 |
| 1941 | 11 |
| 1942 | 17 |
| 1943 | 21 |
| 1944 | 23 |
| 1945 | 28 |
| 1946 | 18 |
| 1947 | 16 |
| 1948 | 21 |
| 1949 | 15 |
| 1950 | 13 |
| 1951 | 16 |
| 1952 | 14 |
| 1953 | 21 |
| 1954 | 9 |
| 1955 | 19 |
| 1956 | 8 |
| 1957 | 18 |
| 1958 | 13 |
| 1959 | 17 |
| 1960 | 11 |
| 1961 | 15 |
| 1962 | 14 |
| 1963 | 9 |
| 1964 | 5 |
| 1965 | 10 |
| 1966 | 11 |
| 1967 | 9 |
| 1968 | 4 |
| 1969 | 8 |
| 1970 | 7 |
| 1971 | 11 |
| 1972 | 8 |
| 1973 | 7 |
| 1974 | 15 |
| 1975 | 14 |
| 1976 | 11 |
| 1977 | 3 |
| 1978 | 10 |
| 1979 | 10 |
| 1980 | 14 |
| 1981 | 7 |
| 1982 | 11 |
| 1983 | 10 |
| 1984 | 8 |
| 1985 | 9 |
| 1986 | 9 |
| 1987 | 6 |
| 1988 | 8 |
| 1989 | 31 |
| 1990 | 6 |
| 1991 | 12 |
| 1992 | 8 |
| 1993 | 11 |
| 1994 | 6 |
| 1995 | 10 |
| 1996 | 16 |
| 1997 | 13 |
| 1998 | 10 |
| 1999 | 7 |
| 2000 | 15 |
| 2001 | 6 |
| 2002 | 2 |
| 2003 | 8 |
| 2004 | 3 |
| 2006 | 9 |
| 2007 | 6 |
| 2008 | 11 |
| 2009 | 10 |
| 2010 | 5 |
| 2011 | 7 |
| 2012 | 4 |
| 2013 | 4 |
| 2014 | 7 |
| 2015 | 6 |
| 2016 | 7 |
| 2017 | 2 |
| 2018 | 16 |
| 2019 | 8 |
| 2020 | 12 |
| 2021 | 15 |
| 2022 | 9 |
| 2023 | 42 |
| 2024 | 22 |
| 2025 | 22 |
| 2026 | 12 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 1949-01-31 | Record low minimum temperature | Record low minimum temperature -6.7 C (19.9 F) |
| 1951-01-31 | Record low maximum temperature | Record low maximum temperature -1.7 C (28.9 F) |
| 1962-01-12 | Record low minimum temperature | Record low minimum temperature -8.9 C (16.0 F) |
Wettest Day of Each Month
Sep: 381.0 mm (15.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 161.0 mm (6.3 in) | 28 January 1941 |
| Feb | 67.3 mm (2.6 in) | 25 February 1983 |
| Mar | 218.4 mm (8.6 in) | 28 March 2025 |
| Apr | 123.2 mm (4.9 in) | 9 April 1954 |
| May | 132.1 mm (5.2 in) | 29 May 1929 |
| Jun | 128.8 mm (5.1 in) | 23 June 1942 |
| Jul | 200.2 mm (7.9 in) | 1 July 2010 |
| Aug | 135.9 mm (5.4 in) | 12 August 1960 |
| Sep | 381.0 mm (15.0 in) | 5 September 1933 |
| Oct | 170.2 mm (6.7 in) | 25 October 2015 |
| Nov | 96.5 mm (3.8 in) | 11 November 1986 |
| Dec | 101.6 mm (4.0 in) | 22 December 1940 |
Period of Record Coverage
1914 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1914 | 190 | 52% | No |
| 1915 | 348 | 95% | Yes |
| 1916 | 329 | 90% | No |
| 1917 | 275 | 75% | No |
| 1918 | 310 | 85% | No |
| 1919 | 329 | 90% | Yes |
| 1920 | 344 | 94% | Yes |
| 1921 | 353 | 97% | Yes |
| 1922 | 298 | 82% | No |
| 1923 | 336 | 92% | Yes |
| 1924 | 359 | 98% | Yes |
| 1925 | 361 | 99% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 364 | 100% | Yes |
| 1928 | 299 | 82% | No |
| 1929 | 307 | 84% | No |
| 1930 | 316 | 87% | No |
| 1931 | 210 | 58% | No |
| 1932 | 316 | 86% | No |
| 1933 | 362 | 99% | Yes |
| 1934 | 357 | 98% | Yes |
| 1935 | 337 | 92% | Yes |
| 1936 | 365 | 100% | Yes |
| 1937 | 346 | 95% | Yes |
| 1938 | 363 | 99% | Yes |
| 1939 | 362 | 99% | Yes |
| 1940 | 361 | 99% | Yes |
| 1941 | 359 | 98% | Yes |
| 1942 | 362 | 99% | Yes |
| 1943 | 348 | 95% | Yes |
| 1944 | 348 | 95% | Yes |
| 1945 | 363 | 99% | Yes |
| 1946 | 345 | 95% | Yes |
| 1947 | 359 | 98% | Yes |
| 1948 | 362 | 99% | Yes |
| 1949 | 332 | 91% | Yes |
| 1950 | 363 | 99% | Yes |
| 1951 | 360 | 99% | Yes |
| 1952 | 363 | 99% | Yes |
| 1953 | 363 | 99% | Yes |
| 1954 | 362 | 99% | Yes |
| 1955 | 363 | 99% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 363 | 99% | Yes |
| 1959 | 353 | 97% | Yes |
| 1960 | 359 | 98% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 362 | 99% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 363 | 99% | Yes |
| 1967 | 354 | 97% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 362 | 99% | Yes |
| 1970 | 364 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 336 | 92% | Yes |
| 1973 | 243 | 67% | No |
| 1974 | 362 | 99% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 360 | 99% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 360 | 98% | Yes |
| 1981 | 362 | 99% | Yes |
| 1982 | 285 | 78% | No |
| 1983 | 311 | 85% | No |
| 1984 | 318 | 87% | No |
| 1985 | 328 | 90% | No |
| 1986 | 350 | 96% | Yes |
| 1987 | 358 | 98% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 364 | 99% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 328 | 90% | No |
| 1995 | 333 | 91% | Yes |
| 1996 | 347 | 95% | Yes |
| 1997 | 359 | 98% | Yes |
| 1998 | 359 | 98% | Yes |
| 1999 | 358 | 98% | Yes |
| 2000 | 356 | 97% | Yes |
| 2001 | 364 | 100% | Yes |
| 2002 | 353 | 97% | Yes |
| 2003 | 330 | 90% | Yes |
| 2004 | 238 | 65% | No |
| 2005 | 12 | 3% | No |
| 2006 | 163 | 45% | No |
| 2007 | 317 | 87% | No |
| 2008 | 347 | 95% | Yes |
| 2009 | 322 | 88% | No |
| 2010 | 226 | 62% | No |
| 2011 | 236 | 65% | No |
| 2012 | 235 | 64% | No |
| 2013 | 218 | 60% | No |
| 2014 | 166 | 45% | No |
| 2015 | 210 | 58% | No |
| 2016 | 217 | 59% | No |
| 2017 | 164 | 45% | No |
| 2018 | 193 | 53% | No |
| 2019 | 149 | 41% | No |
| 2020 | 227 | 62% | No |
| 2021 | 297 | 81% | No |
| 2022 | 295 | 81% | No |
| 2023 | 335 | 92% | Yes |
| 2024 | 349 | 95% | Yes |
| 2025 | 340 | 93% | Yes |
| 2026 | 281 | 77% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 5 October 2026 | Weslaco, US | daily rain (Provisional) | 55.9 mm (2.2 in) | 25.2 mm (1.0 in) | 29 years | 32 of 100 (Routine) |
| 2 October 2026 | Weslaco, US | daily high max (Provisional) | 37.2 C (99.0 F) | 0.5 C (0.9 F) | 36 years | 22 of 100 (Routine) |
| 30 September 2026 | Weslaco, US | daily high min (Provisional) | 27.8 C (82.0 F) | 2.2 C (4.0 F) | 40 years | 30 of 100 (Routine) |
| 30 September 2026 | Weslaco, US | daily high max (Tie, Provisional) | 37.2 C (99.0 F) | tie | 88 years | 9 of 100 (Routine) |
| 29 September 2026 | Weslaco, US | daily high max (Tie, Provisional) | 37.2 C (99.0 F) | tie | 105 years | 10 of 100 (Routine) |
| 28 September 2026 | Weslaco, US | daily high max (Tie, Provisional) | 37.2 C (99.0 F) | tie | 72 years | 7 of 100 (Routine) |
| 22 September 2026 | Weslaco, US | daily high max (Tie, Provisional) | 37.8 C (100.0 F) | tie | 88 years | 9 of 100 (Routine) |
| 16 September 2026 | Weslaco, US | daily high min (Tie, Provisional) | 26.1 C (79.0 F) | tie | 76 years | 8 of 100 (Routine) |
| 15 September 2026 | Weslaco, US | daily high max (Tie, Provisional) | 38.9 C (102.0 F) | tie | 3 years | 2 of 100 (Routine) |
| 14 September 2026 | Weslaco, US | daily high max (Provisional) | 38.9 C (102.0 F) | 1.1 C (2.0 F) | 96 years | 41 of 100 (Notable) |
| 14 September 2026 | Weslaco, US | daily high min (Provisional) | 27.8 C (82.0 F) | 1.7 C (3.1 F) | 48 years | 30 of 100 (Routine) |
| 13 September 2026 | Weslaco, US | daily high min (Provisional) | 27.8 C (82.0 F) | 0.6 C (1.1 F) | 44 years | 25 of 100 (Routine) |
| 12 September 2026 | Weslaco, US | daily high min (Tie, Provisional) | 26.1 C (79.0 F) | tie | 109 years | 10 of 100 (Routine) |
| 11 September 2026 | Weslaco, US | daily high max (Provisional) | 39.4 C (102.9 F) | 0.5 C (0.9 F) | 3 years | 11 of 100 (Routine) |
| 11 September 2026 | Weslaco, US | daily high min (Tie, Provisional) | 26.1 C (79.0 F) | tie | 11 years | 3 of 100 (Routine) |
| 9 September 2026 | Weslaco, US | daily high max (Provisional) | 39.4 C (102.9 F) | 0.5 C (0.9 F) | 3 years | 11 of 100 (Routine) |
| 8 September 2026 | Weslaco, US | daily high max (Provisional) | 38.9 C (102.0 F) | 1.1 C (2.0 F) | 3 years | 13 of 100 (Routine) |
| 8 September 2026 | Weslaco, US | daily high min (Tie, Provisional) | 26.1 C (79.0 F) | tie | 24 years | 4 of 100 (Routine) |
| 7 September 2026 | Weslaco, US | daily high min (Tie, Provisional) | 26.7 C (80.1 F) | tie | 3 years | 2 of 100 (Routine) |
| 4 September 2026 | Weslaco, US | daily high max (Tie, Provisional) | 39.4 C (102.9 F) | tie | 25 years | 4 of 100 (Routine) |
Climate Trend
69 complete years, 1915 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1915 | 23.2 C | -0.41 C |
| 1919 | 23.1 C | -0.44 C |
| 1923 | 23.3 C | -0.22 C |
| 1924 | 22.7 C | -0.84 C |
| 1925 | 23.2 C | -0.33 C |
| 1926 | 23.2 C | -0.37 C |
| 1933 | 24.1 C | +0.57 C |
| 1935 | 23.6 C | +0.00 C |
| 1938 | 23.8 C | +0.22 C |
| 1939 | 23.8 C | +0.19 C |
| 1942 | 23.2 C | -0.37 C |
| 1944 | 23.2 C | -0.35 C |
| 1945 | 24.1 C | +0.50 C |
| 1946 | 24.3 C | +0.78 C |
| 1947 | 23.2 C | -0.32 C |
| 1948 | 23.8 C | +0.20 C |
| 1950 | 24.8 C | +1.22 C |
| 1951 | 23.8 C | +0.24 C |
| 1952 | 23.2 C | -0.35 C |
| 1953 | 24.2 C | +0.62 C |
| 1954 | 23.9 C | +0.34 C |
| 1955 | 23.3 C | -0.23 C |
| 1956 | 23.4 C | -0.13 C |
| 1957 | 24.0 C | +0.43 C |
| 1958 | 22.6 C | -0.94 C |
| 1960 | 22.7 C | -0.85 C |
| 1961 | 23.0 C | -0.53 C |
| 1962 | 23.6 C | +0.03 C |
| 1963 | 23.1 C | -0.42 C |
| 1964 | 23.6 C | +0.08 C |
| 1965 | 23.7 C | +0.10 C |
| 1966 | 22.6 C | -1.00 C |
| 1967 | 23.5 C | -0.08 C |
| 1968 | 22.8 C | -0.79 C |
| 1969 | 23.5 C | -0.08 C |
| 1970 | 23.0 C | -0.57 C |
| 1971 | 24.0 C | +0.45 C |
| 1974 | 23.8 C | +0.24 C |
| 1975 | 23.7 C | +0.15 C |
| 1976 | 22.3 C | -1.25 C |
| 1977 | 23.5 C | -0.07 C |
| 1978 | 23.1 C | -0.42 C |
| 1979 | 22.9 C | -0.63 C |
| 1980 | 23.7 C | +0.13 C |
| 1981 | 24.0 C | +0.41 C |
| 1983 | 23.4 C | -0.21 C |
| 1984 | 23.9 C | +0.31 C |
| 1985 | 23.4 C | -0.15 C |
| 1986 | 23.7 C | +0.09 C |
| 1987 | 23.1 C | -0.48 C |
| 1988 | 23.3 C | -0.25 C |
| 1989 | 23.3 C | -0.27 C |
| 1990 | 23.9 C | +0.35 C |
| 1991 | 23.4 C | -0.21 C |
| 1992 | 22.9 C | -0.68 C |
| 1993 | 22.9 C | -0.67 C |
| 1995 | 23.5 C | -0.03 C |
| 1996 | 23.6 C | +0.03 C |
| 1997 | 23.0 C | -0.55 C |
| 1998 | 24.8 C | +1.28 C |
| 1999 | 24.5 C | +0.90 C |
| 2000 | 24.3 C | +0.72 C |
| 2001 | 23.8 C | +0.26 C |
| 2002 | 23.8 C | +0.20 C |
| 2008 | 23.4 C | -0.15 C |
| 2009 | 24.0 C | +0.40 C |
| 2023 | 25.0 C | +1.45 C |
| 2024 | 25.0 C | +1.45 C |
| 2025 | 24.9 C | +1.30 C |
The annual mean temperature here has risen by 0.07 C (0.02 to 0.12) per decade over 1915 to 2025. In Fahrenheit: 0.13 F (0.04 to 0.22) per decade. The slope is a straight line fitted to 69 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.07 C (0.02 to 0.12) per decade | 0.13 F (0.04 to 0.22) per decade | 1915 to 2025 | 69 | Rise |
| Mean daily maximum | 0.05 C (-0.02 to 0.12) per decade | 0.09 F (-0.03 to 0.21) per decade | 1915 to 2025 | 69 | Not clearly different from zero |
| Mean daily minimum | 0.10 C (0.04 to 0.15) per decade | 0.2 F (0.1 to 0.3) per decade | 1915 to 2025 | 69 | 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
1914 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.3 C (109.9 F) | 1920 | 38.9 C (102.0 F) | 113 |
| Coldest night (TNn) | -8.9 C (16.0 F) | 1962 | -1.7 C (28.9 F) | 113 |
| Wettest day (Rx1day) | 381.0 mm (15.0 in) | 1933 | 69.9 mm (2.8 in) | 113 |
| Wettest five days (Rx5day) | 382.5 mm (15.1 in) | 1933 | 103.1 mm (4.1 in) | 113 |
| Longest dry spell (CDD) | 111 days | 1998 | 39 days | 113 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1914 | 38.3 C (100.9 F) |
| 1915 | 40.6 C (105.1 F) |
| 1916 | 41.1 C (106.0 F) |
| 1917 | 38.9 C (102.0 F) |
| 1918 | 40.0 C (104.0 F) |
| 1919 | 37.8 C (100.0 F) |
| 1920 | 43.3 C (109.9 F) |
| 1921 | 38.3 C (100.9 F) |
| 1922 | 38.3 C (100.9 F) |
| 1923 | 37.2 C (99.0 F) |
| 1924 | 38.9 C (102.0 F) |
| 1925 | 37.8 C (100.0 F) |
| 1926 | 38.3 C (100.9 F) |
| 1927 | 37.2 C (99.0 F) |
| 1928 | 39.4 C (102.9 F) |
| 1929 | 41.1 C (106.0 F) |
| 1930 | 39.4 C (102.9 F) |
| 1931 | 39.4 C (102.9 F) |
| 1932 | 38.3 C (100.9 F) |
| 1933 | 38.3 C (100.9 F) |
| 1934 | 38.3 C (100.9 F) |
| 1935 | 38.9 C (102.0 F) |
| 1936 | 39.4 C (102.9 F) |
| 1937 | 41.7 C (107.1 F) |
| 1938 | 40.0 C (104.0 F) |
| 1939 | 42.2 C (108.0 F) |
| 1940 | 41.1 C (106.0 F) |
| 1941 | 38.9 C (102.0 F) |
| 1942 | 40.6 C (105.1 F) |
| 1943 | 40.0 C (104.0 F) |
| 1944 | 41.1 C (106.0 F) |
| 1945 | 40.6 C (105.1 F) |
| 1946 | 40.6 C (105.1 F) |
| 1947 | 40.0 C (104.0 F) |
| 1948 | 39.4 C (102.9 F) |
| 1949 | 39.4 C (102.9 F) |
| 1950 | 38.3 C (100.9 F) |
| 1951 | 37.8 C (100.0 F) |
| 1952 | 38.9 C (102.0 F) |
| 1953 | 40.6 C (105.1 F) |
| 1954 | 39.4 C (102.9 F) |
| 1955 | 40.6 C (105.1 F) |
| 1956 | 37.2 C (99.0 F) |
| 1957 | 38.9 C (102.0 F) |
| 1958 | 38.3 C (100.9 F) |
| 1959 | 37.8 C (100.0 F) |
| 1960 | 39.4 C (102.9 F) |
| 1961 | 37.2 C (99.0 F) |
| 1962 | 39.4 C (102.9 F) |
| 1963 | 38.3 C (100.9 F) |
| 1964 | 39.4 C (102.9 F) |
| 1965 | 38.3 C (100.9 F) |
| 1966 | 37.8 C (100.0 F) |
| 1967 | 38.9 C (102.0 F) |
| 1968 | 37.2 C (99.0 F) |
| 1969 | 40.0 C (104.0 F) |
| 1970 | 38.9 C (102.0 F) |
| 1971 | 38.3 C (100.9 F) |
| 1972 | 38.3 C (100.9 F) |
| 1973 | 39.4 C (102.9 F) |
| 1974 | 39.4 C (102.9 F) |
| 1975 | 37.8 C (100.0 F) |
| 1976 | 37.8 C (100.0 F) |
| 1977 | 38.3 C (100.9 F) |
| 1978 | 37.8 C (100.0 F) |
| 1979 | 39.4 C (102.9 F) |
| 1980 | 38.9 C (102.0 F) |
| 1981 | 38.3 C (100.9 F) |
| 1982 | 38.3 C (100.9 F) |
| 1983 | 38.9 C (102.0 F) |
| 1984 | 40.0 C (104.0 F) |
| 1985 | 37.8 C (100.0 F) |
| 1986 | 39.4 C (102.9 F) |
| 1987 | 37.8 C (100.0 F) |
| 1988 | 39.4 C (102.9 F) |
| 1989 | 38.9 C (102.0 F) |
| 1990 | 38.3 C (100.9 F) |
| 1991 | 39.4 C (102.9 F) |
| 1992 | 38.3 C (100.9 F) |
| 1993 | 38.3 C (100.9 F) |
| 1994 | 38.3 C (100.9 F) |
| 1995 | 38.9 C (102.0 F) |
| 1996 | 38.3 C (100.9 F) |
| 1997 | 38.9 C (102.0 F) |
| 1998 | 40.6 C (105.1 F) |
| 1999 | 40.6 C (105.1 F) |
| 2000 | 41.7 C (107.1 F) |
| 2001 | 38.9 C (102.0 F) |
| 2002 | 38.3 C (100.9 F) |
| 2003 | 40.0 C (104.0 F) |
| 2004 | 40.0 C (104.0 F) |
| 2005 | 30.6 C (87.1 F) |
| 2006 | 38.3 C (100.9 F) |
| 2007 | 36.1 C (97.0 F) |
| 2008 | 37.8 C (100.0 F) |
| 2009 | 39.4 C (102.9 F) |
| 2010 | 38.3 C (100.9 F) |
| 2011 | 38.3 C (100.9 F) |
| 2012 | 40.0 C (104.0 F) |
| 2013 | 38.9 C (102.0 F) |
| 2014 | 38.3 C (100.9 F) |
| 2015 | 38.3 C (100.9 F) |
| 2016 | 39.4 C (102.9 F) |
| 2017 | 40.0 C (104.0 F) |
| 2018 | 40.6 C (105.1 F) |
| 2019 | 40.0 C (104.0 F) |
| 2020 | 39.4 C (102.9 F) |
| 2021 | 37.2 C (99.0 F) |
| 2022 | 41.1 C (106.0 F) |
| 2023 | 41.7 C (107.1 F) |
| 2024 | 42.2 C (108.0 F) |
| 2025 | 38.9 C (102.0 F) |
| 2026 | 41.1 C (106.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1914 | -1.1 C (30.0 F) |
| 1915 | 0.0 C (32.0 F) |
| 1916 | -1.7 C (28.9 F) |
| 1917 | -4.4 C (24.1 F) |
| 1918 | -6.1 C (21.0 F) |
| 1919 | -3.9 C (25.0 F) |
| 1920 | -1.1 C (30.0 F) |
| 1921 | 1.1 C (34.0 F) |
| 1922 | -2.8 C (27.0 F) |
| 1923 | -2.8 C (27.0 F) |
| 1924 | -3.3 C (26.1 F) |
| 1925 | -5.0 C (23.0 F) |
| 1926 | -0.6 C (30.9 F) |
| 1927 | 0.6 C (33.1 F) |
| 1928 | -2.8 C (27.0 F) |
| 1929 | -2.2 C (28.0 F) |
| 1930 | -5.6 C (21.9 F) |
| 1931 | 3.3 C (37.9 F) |
| 1932 | -1.7 C (28.9 F) |
| 1933 | -2.2 C (28.0 F) |
| 1934 | 1.7 C (35.1 F) |
| 1935 | 2.8 C (37.0 F) |
| 1936 | -3.9 C (25.0 F) |
| 1937 | 0.6 C (33.1 F) |
| 1938 | -1.7 C (28.9 F) |
| 1939 | -0.6 C (30.9 F) |
| 1940 | -1.1 C (30.0 F) |
| 1941 | -2.2 C (28.0 F) |
| 1942 | -3.3 C (26.1 F) |
| 1943 | -4.4 C (24.1 F) |
| 1944 | -3.3 C (26.1 F) |
| 1945 | -2.2 C (28.0 F) |
| 1946 | -1.1 C (30.0 F) |
| 1947 | -1.1 C (30.0 F) |
| 1948 | -2.2 C (28.0 F) |
| 1949 | -6.7 C (19.9 F) |
| 1950 | -4.4 C (24.1 F) |
| 1951 | -6.1 C (21.0 F) |
| 1952 | 0.6 C (33.1 F) |
| 1953 | -2.2 C (28.0 F) |
| 1954 | 0.6 C (33.1 F) |
| 1955 | -1.7 C (28.9 F) |
| 1956 | 0.0 C (32.0 F) |
| 1957 | -3.3 C (26.1 F) |
| 1958 | -2.2 C (28.0 F) |
| 1959 | -0.6 C (30.9 F) |
| 1960 | -1.7 C (28.9 F) |
| 1961 | 0.0 C (32.0 F) |
| 1962 | -8.9 C (16.0 F) |
| 1963 | -5.0 C (23.0 F) |
| 1964 | -1.7 C (28.9 F) |
| 1965 | -0.6 C (30.9 F) |
| 1966 | -2.2 C (28.0 F) |
| 1967 | -1.7 C (28.9 F) |
| 1968 | -0.6 C (30.9 F) |
| 1969 | -1.7 C (28.9 F) |
| 1970 | -2.2 C (28.0 F) |
| 1971 | -0.6 C (30.9 F) |
| 1972 | 0.6 C (33.1 F) |
| 1973 | -3.3 C (26.1 F) |
| 1974 | 1.1 C (34.0 F) |
| 1975 | -3.9 C (25.0 F) |
| 1976 | -1.7 C (28.9 F) |
| 1977 | -1.7 C (28.9 F) |
| 1978 | -2.8 C (27.0 F) |
| 1979 | -3.3 C (26.1 F) |
| 1980 | -1.1 C (30.0 F) |
| 1981 | 0.6 C (33.1 F) |
| 1982 | -2.8 C (27.0 F) |
| 1983 | -8.3 C (17.1 F) |
| 1984 | -0.6 C (30.9 F) |
| 1985 | -3.9 C (25.0 F) |
| 1986 | 1.7 C (35.1 F) |
| 1987 | 1.7 C (35.1 F) |
| 1988 | 0.6 C (33.1 F) |
| 1989 | -8.9 C (16.0 F) |
| 1990 | -2.2 C (28.0 F) |
| 1991 | 0.6 C (33.1 F) |
| 1992 | 1.1 C (34.0 F) |
| 1993 | 0.6 C (33.1 F) |
| 1994 | 1.1 C (34.0 F) |
| 1995 | 2.8 C (37.0 F) |
| 1996 | -2.8 C (27.0 F) |
| 1997 | -1.7 C (28.9 F) |
| 1998 | 1.1 C (34.0 F) |
| 1999 | 2.8 C (37.0 F) |
| 2000 | 0.6 C (33.1 F) |
| 2001 | 0.0 C (32.0 F) |
| 2002 | -1.1 C (30.0 F) |
| 2003 | 0.6 C (33.1 F) |
| 2004 | 2.2 C (36.0 F) |
| 2005 | 7.2 C (45.0 F) |
| 2006 | 3.3 C (37.9 F) |
| 2007 | 0.6 C (33.1 F) |
| 2008 | 1.1 C (34.0 F) |
| 2009 | -0.6 C (30.9 F) |
| 2010 | -3.9 C (25.0 F) |
| 2011 | -2.8 C (27.0 F) |
| 2012 | 1.7 C (35.1 F) |
| 2013 | 2.8 C (37.0 F) |
| 2014 | 0.6 C (33.1 F) |
| 2015 | 2.8 C (37.0 F) |
| 2016 | 1.7 C (35.1 F) |
| 2017 | 5.6 C (42.1 F) |
| 2018 | -1.7 C (28.9 F) |
| 2019 | 1.7 C (35.1 F) |
| 2020 | 2.8 C (37.0 F) |
| 2021 | -6.7 C (19.9 F) |
| 2022 | -2.8 C (27.0 F) |
| 2023 | 2.2 C (36.0 F) |
| 2024 | -3.3 C (26.1 F) |
| 2025 | -3.9 C (25.0 F) |
| 2026 | -2.8 C (27.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1914 | 121.9 mm (4.8 in) |
| 1915 | 53.3 mm (2.1 in) |
| 1916 | 65.0 mm (2.6 in) |
| 1917 | 61.7 mm (2.4 in) |
| 1918 | 59.7 mm (2.4 in) |
| 1919 | 55.1 mm (2.2 in) |
| 1920 | 86.4 mm (3.4 in) |
| 1921 | 68.6 mm (2.7 in) |
| 1922 | 66.0 mm (2.6 in) |
| 1923 | 44.5 mm (1.8 in) |
| 1924 | 50.0 mm (2.0 in) |
| 1925 | 146.1 mm (5.8 in) |
| 1926 | 40.6 mm (1.6 in) |
| 1927 | 43.4 mm (1.7 in) |
| 1928 | 120.7 mm (4.8 in) |
| 1929 | 132.1 mm (5.2 in) |
| 1930 | 41.4 mm (1.6 in) |
| 1931 | 68.1 mm (2.7 in) |
| 1932 | 52.8 mm (2.1 in) |
| 1933 | 381.0 mm (15.0 in) |
| 1934 | 52.1 mm (2.1 in) |
| 1935 | 88.4 mm (3.5 in) |
| 1936 | 58.4 mm (2.3 in) |
| 1937 | 114.3 mm (4.5 in) |
| 1938 | 118.6 mm (4.7 in) |
| 1939 | 59.7 mm (2.4 in) |
| 1940 | 101.6 mm (4.0 in) |
| 1941 | 161.0 mm (6.3 in) |
| 1942 | 128.8 mm (5.1 in) |
| 1943 | 41.9 mm (1.6 in) |
| 1944 | 69.9 mm (2.8 in) |
| 1945 | 63.5 mm (2.5 in) |
| 1946 | 113.8 mm (4.5 in) |
| 1947 | 94.7 mm (3.7 in) |
| 1948 | 68.6 mm (2.7 in) |
| 1949 | 63.5 mm (2.5 in) |
| 1950 | 124.0 mm (4.9 in) |
| 1951 | 119.4 mm (4.7 in) |
| 1952 | 52.3 mm (2.1 in) |
| 1953 | 48.3 mm (1.9 in) |
| 1954 | 123.2 mm (4.9 in) |
| 1955 | 93.7 mm (3.7 in) |
| 1956 | 23.4 mm (0.9 in) |
| 1957 | 55.6 mm (2.2 in) |
| 1958 | 103.9 mm (4.1 in) |
| 1959 | 76.5 mm (3.0 in) |
| 1960 | 135.9 mm (5.4 in) |
| 1961 | 86.4 mm (3.4 in) |
| 1962 | 72.4 mm (2.9 in) |
| 1963 | 59.9 mm (2.4 in) |
| 1964 | 22.4 mm (0.9 in) |
| 1965 | 113.8 mm (4.5 in) |
| 1966 | 92.7 mm (3.6 in) |
| 1967 | 186.2 mm (7.3 in) |
| 1968 | 39.6 mm (1.6 in) |
| 1969 | 82.0 mm (3.2 in) |
| 1970 | 49.3 mm (1.9 in) |
| 1971 | 102.1 mm (4.0 in) |
| 1972 | 66.0 mm (2.6 in) |
| 1973 | 68.6 mm (2.7 in) |
| 1974 | 115.6 mm (4.6 in) |
| 1975 | 69.6 mm (2.7 in) |
| 1976 | 52.6 mm (2.1 in) |
| 1977 | 61.7 mm (2.4 in) |
| 1978 | 73.7 mm (2.9 in) |
| 1979 | 63.0 mm (2.5 in) |
| 1980 | 42.2 mm (1.7 in) |
| 1981 | 78.0 mm (3.1 in) |
| 1982 | 84.1 mm (3.3 in) |
| 1983 | 121.2 mm (4.8 in) |
| 1984 | 67.3 mm (2.6 in) |
| 1985 | 215.9 mm (8.5 in) |
| 1986 | 96.5 mm (3.8 in) |
| 1987 | 83.6 mm (3.3 in) |
| 1988 | 61.0 mm (2.4 in) |
| 1989 | 53.3 mm (2.1 in) |
| 1990 | 63.5 mm (2.5 in) |
| 1991 | 108.2 mm (4.3 in) |
| 1992 | 71.9 mm (2.8 in) |
| 1993 | 110.5 mm (4.4 in) |
| 1994 | 49.5 mm (1.9 in) |
| 1995 | 68.6 mm (2.7 in) |
| 1996 | 44.2 mm (1.7 in) |
| 1997 | 74.4 mm (2.9 in) |
| 1998 | 73.9 mm (2.9 in) |
| 1999 | 122.2 mm (4.8 in) |
| 2000 | 92.5 mm (3.6 in) |
| 2001 | 77.7 mm (3.1 in) |
| 2002 | 85.9 mm (3.4 in) |
| 2003 | 61.0 mm (2.4 in) |
| 2004 | 101.6 mm (4.0 in) |
| 2005 | 3.8 mm (0.15 in) |
| 2006 | 94.0 mm (3.7 in) |
| 2007 | 49.3 mm (1.9 in) |
| 2008 | 182.9 mm (7.2 in) |
| 2009 | 71.1 mm (2.8 in) |
| 2010 | 200.2 mm (7.9 in) |
| 2011 | 81.3 mm (3.2 in) |
| 2012 | 37.3 mm (1.5 in) |
| 2013 | 55.9 mm (2.2 in) |
| 2014 | 50.8 mm (2.0 in) |
| 2015 | 170.2 mm (6.7 in) |
| 2016 | 57.2 mm (2.3 in) |
| 2017 | 55.4 mm (2.2 in) |
| 2018 | 30.5 mm (1.2 in) |
| 2019 | 27.2 mm (1.1 in) |
| 2020 | 50.8 mm (2.0 in) |
| 2021 | 141.7 mm (5.6 in) |
| 2022 | 68.8 mm (2.7 in) |
| 2023 | 76.2 mm (3.0 in) |
| 2024 | 55.9 mm (2.2 in) |
| 2025 | 218.4 mm (8.6 in) |
| 2026 | 109.7 mm (4.3 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1914 | 180.1 mm (7.1 in) |
| 1915 | 85.1 mm (3.4 in) |
| 1916 | 86.9 mm (3.4 in) |
| 1917 | 75.7 mm (3.0 in) |
| 1918 | 61.5 mm (2.4 in) |
| 1919 | 73.2 mm (2.9 in) |
| 1920 | 69.9 mm (2.8 in) |
| 1921 | 100.1 mm (3.9 in) |
| 1922 | 119.6 mm (4.7 in) |
| 1923 | 79.8 mm (3.1 in) |
| 1924 | 70.8 mm (2.8 in) |
| 1925 | 170.2 mm (6.7 in) |
| 1926 | 67.6 mm (2.7 in) |
| 1927 | 55.7 mm (2.2 in) |
| 1928 | 120.7 mm (4.8 in) |
| 1929 | 171.8 mm (6.8 in) |
| 1930 | 78.6 mm (3.1 in) |
| 1931 | 101.6 mm (4.0 in) |
| 1932 | 119.5 mm (4.7 in) |
| 1933 | 382.5 mm (15.1 in) |
| 1934 | 72.5 mm (2.9 in) |
| 1935 | 88.4 mm (3.5 in) |
| 1936 | 115.3 mm (4.5 in) |
| 1937 | 121.9 mm (4.8 in) |
| 1938 | 126.2 mm (5.0 in) |
| 1939 | 59.7 mm (2.4 in) |
| 1940 | 158.8 mm (6.3 in) |
| 1941 | 162.5 mm (6.4 in) |
| 1942 | 175.8 mm (6.9 in) |
| 1943 | 87.5 mm (3.4 in) |
| 1944 | 90.1 mm (3.5 in) |
| 1945 | 64.8 mm (2.6 in) |
| 1946 | 143.3 mm (5.6 in) |
| 1947 | 188.7 mm (7.4 in) |
| 1948 | 73.2 mm (2.9 in) |
| 1949 | 90.5 mm (3.6 in) |
| 1950 | 137.0 mm (5.4 in) |
| 1951 | 169.1 mm (6.7 in) |
| 1952 | 103.1 mm (4.1 in) |
| 1953 | 114.8 mm (4.5 in) |
| 1954 | 142.0 mm (5.6 in) |
| 1955 | 111.2 mm (4.4 in) |
| 1956 | 36.6 mm (1.4 in) |
| 1957 | 57.4 mm (2.3 in) |
| 1958 | 116.6 mm (4.6 in) |
| 1959 | 80.6 mm (3.2 in) |
| 1960 | 143.8 mm (5.7 in) |
| 1961 | 176.6 mm (7.0 in) |
| 1962 | 105.0 mm (4.1 in) |
| 1963 | 119.4 mm (4.7 in) |
| 1964 | 66.3 mm (2.6 in) |
| 1965 | 120.2 mm (4.7 in) |
| 1966 | 201.7 mm (7.9 in) |
| 1967 | 300.6 mm (11.8 in) |
| 1968 | 62.3 mm (2.5 in) |
| 1969 | 92.9 mm (3.7 in) |
| 1970 | 109.8 mm (4.3 in) |
| 1971 | 187.5 mm (7.4 in) |
| 1972 | 211.6 mm (8.3 in) |
| 1973 | 142.3 mm (5.6 in) |
| 1974 | 163.1 mm (6.4 in) |
| 1975 | 145.3 mm (5.7 in) |
| 1976 | 161.4 mm (6.4 in) |
| 1977 | 86.4 mm (3.4 in) |
| 1978 | 92.0 mm (3.6 in) |
| 1979 | 96.8 mm (3.8 in) |
| 1980 | 62.7 mm (2.5 in) |
| 1981 | 88.1 mm (3.5 in) |
| 1982 | 106.2 mm (4.2 in) |
| 1983 | 164.6 mm (6.5 in) |
| 1984 | 112.0 mm (4.4 in) |
| 1985 | 218.4 mm (8.6 in) |
| 1986 | 122.7 mm (4.8 in) |
| 1987 | 91.2 mm (3.6 in) |
| 1988 | 95.3 mm (3.8 in) |
| 1989 | 71.1 mm (2.8 in) |
| 1990 | 74.7 mm (2.9 in) |
| 1991 | 122.0 mm (4.8 in) |
| 1992 | 76.5 mm (3.0 in) |
| 1993 | 131.1 mm (5.2 in) |
| 1994 | 94.5 mm (3.7 in) |
| 1995 | 123.9 mm (4.9 in) |
| 1996 | 101.3 mm (4.0 in) |
| 1997 | 137.9 mm (5.4 in) |
| 1998 | 155.2 mm (6.1 in) |
| 1999 | 141.7 mm (5.6 in) |
| 2000 | 92.5 mm (3.6 in) |
| 2001 | 77.7 mm (3.1 in) |
| 2002 | 125.5 mm (4.9 in) |
| 2003 | 130.6 mm (5.1 in) |
| 2004 | 104.1 mm (4.1 in) |
| 2005 | 5.1 mm (0.20 in) |
| 2006 | 99.1 mm (3.9 in) |
| 2007 | 73.4 mm (2.9 in) |
| 2008 | 186.4 mm (7.3 in) |
| 2009 | 78.2 mm (3.1 in) |
| 2010 | 202.2 mm (8.0 in) |
| 2011 | 153.4 mm (6.0 in) |
| 2012 | 51.8 mm (2.0 in) |
| 2013 | 95.8 mm (3.8 in) |
| 2014 | 64.8 mm (2.6 in) |
| 2015 | 178.3 mm (7.0 in) |
| 2016 | 58.5 mm (2.3 in) |
| 2017 | 64.8 mm (2.6 in) |
| 2018 | 31.8 mm (1.3 in) |
| 2019 | 43.2 mm (1.7 in) |
| 2020 | 50.8 mm (2.0 in) |
| 2021 | 202.4 mm (8.0 in) |
| 2022 | 89.8 mm (3.5 in) |
| 2023 | 80.9 mm (3.2 in) |
| 2024 | 85.3 mm (3.4 in) |
| 2025 | 218.4 mm (8.6 in) |
| 2026 | 191.2 mm (7.5 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1914 | 52 days |
| 1915 | 34 days |
| 1916 | 65 days |
| 1917 | 39 days |
| 1918 | 39 days |
| 1919 | 38 days |
| 1920 | 66 days |
| 1921 | 31 days |
| 1922 | 45 days |
| 1923 | 34 days |
| 1924 | 52 days |
| 1925 | 50 days |
| 1926 | 40 days |
| 1927 | 53 days |
| 1928 | 36 days |
| 1929 | 53 days |
| 1930 | 42 days |
| 1931 | 28 days |
| 1932 | 32 days |
| 1933 | 45 days |
| 1934 | 29 days |
| 1935 | 21 days |
| 1936 | 27 days |
| 1937 | 37 days |
| 1938 | 55 days |
| 1939 | 27 days |
| 1940 | 33 days |
| 1941 | 30 days |
| 1942 | 37 days |
| 1943 | 70 days |
| 1944 | 36 days |
| 1945 | 50 days |
| 1946 | 40 days |
| 1947 | 34 days |
| 1948 | 48 days |
| 1949 | 28 days |
| 1950 | 88 days |
| 1951 | 31 days |
| 1952 | 47 days |
| 1953 | 45 days |
| 1954 | 44 days |
| 1955 | 49 days |
| 1956 | 40 days |
| 1957 | 56 days |
| 1958 | 45 days |
| 1959 | 34 days |
| 1960 | 47 days |
| 1961 | 47 days |
| 1962 | 59 days |
| 1963 | 68 days |
| 1964 | 49 days |
| 1965 | 36 days |
| 1966 | 39 days |
| 1967 | 38 days |
| 1968 | 35 days |
| 1969 | 34 days |
| 1970 | 26 days |
| 1971 | 34 days |
| 1972 | 33 days |
| 1973 | 24 days |
| 1974 | 45 days |
| 1975 | 109 days |
| 1976 | 34 days |
| 1977 | 40 days |
| 1978 | 54 days |
| 1979 | 41 days |
| 1980 | 62 days |
| 1981 | 42 days |
| 1982 | 57 days |
| 1983 | 70 days |
| 1984 | 54 days |
| 1985 | 31 days |
| 1986 | 42 days |
| 1987 | 28 days |
| 1988 | 60 days |
| 1989 | 44 days |
| 1990 | 32 days |
| 1991 | 38 days |
| 1992 | 24 days |
| 1993 | 72 days |
| 1994 | 66 days |
| 1995 | 54 days |
| 1996 | 53 days |
| 1997 | 38 days |
| 1998 | 111 days |
| 1999 | 84 days |
| 2000 | 47 days |
| 2001 | 40 days |
| 2002 | 34 days |
| 2003 | 31 days |
| 2004 | 27 days |
| 2005 | 29 days |
| 2006 | 15 days |
| 2007 | 29 days |
| 2008 | 31 days |
| 2009 | 47 days |
| 2010 | 77 days |
| 2011 | 16 days |
| 2012 | 10 days |
| 2013 | 5 days |
| 2014 | 6 days |
| 2015 | 6 days |
| 2016 | 40 days |
| 2017 | 5 days |
| 2018 | 6 days |
| 2019 | 6 days |
| 2020 | 6 days |
| 2021 | 12 days |
| 2022 | 45 days |
| 2023 | 38 days |
| 2024 | 30 days |
| 2025 | 23 days |
| 2026 | 65 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
21 years with a frostAcross 21 years with a frost, the median last spring frost at Weslaco falls on 30 January and the median first autumn frost on 14 December, which leaves a median of 315 days between them.
| Measure | Median, all years | Earliest period | Recent period (1915 to 1997) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 30 January | n/a | 30 January | n/a | n/a |
| First autumn frost | 14 December | n/a | 14 December | n/a | n/a |
| Growing days | 315 days | n/a | 315 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
88 years, 1914 to 2025A day with at least 74.2 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 276.6 mm (10.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 74.2 mm (2.9 in) | |
| 5 years | 110.7 mm (4.4 in) | |
| 10 years | 140.7 mm (5.5 in) | |
| 25 years | 186.8 mm (7.4 in) | |
| 50 years | 228.3 mm (9.0 in) | |
| 100 years | 276.6 mm (10.9 in) | Longer than the 88 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, 88 years of values from 1914 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: 381.0 mm (15.0 in) in 1933; 218.4 mm (8.6 in) in 2025; 215.9 mm (8.5 in) in 1985.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Weslaco, at 1964 and 1988. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1964 ran 0.4 C (0.6 F) higher than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1988 ran 0.4 C (0.7 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1964 | +0.4 | +0.6 | likely | 5 |
| 1988 | -0.4 | -0.7 | 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
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 . Last revised (2026-10-14).