March weather in Weslaco, TX
The average temperature in Weslaco in March is 70.4°F (60.1°F–80.7°F). Average precipitation: 1.45 inches.
March is a spring month in Weslaco, and is cooler than the annual average of 75°F. Daily temperatures swing about 20.6°F between overnight low and afternoon high. Daylight averages about 11h 50m. For travel, March is a comfortable month to visit.
Avg High
80.7°F
Avg Low
60.1°F
Precipitation
1.45 in
Daylight
11h 50m
March records in Weslaco
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| March 1 | 100.9°F (1916) | 33.1°F (1937) | 0.43 in (1938) |
| March 2 | 96.1°F (1916) | 30.0°F (1980) | 0.43 in (1950) |
| March 3 | 98.1°F (1999) | 26.1°F (1917) | 0.38 in (2003) |
| March 4 | 97.0°F (1983) | 33.1°F (1965) | 0.70 in (1915) |
| March 5 | 93.0°F (1935) | 34.0°F (1965) | 0.92 in (1944) |
| March 6 | 98.1°F (1956) | 32.0°F (1989) | 1.77 in (1997) |
| March 7 | 98.1°F (1991) | 33.1°F (1989) | 0.40 in (1970) |
| March 8 | 91.0°F (1921) | 32.0°F (1920) | 1.78 in (1938) |
| March 9 | 99.0°F (2025) | 34.0°F (1942) | 0.40 in (1915) |
| March 10 | 99.0°F (2025) | 35.1°F (1932) | 2.25 in (2016) |
| March 11 | 95.0°F (1954) | 32.0°F (1932) | 2.93 in (1997) |
| March 12 | 100.9°F (1954) | 32.0°F (1948) | 2.47 in (1997) |
| March 13 | 98.1°F (2023) | 18.0°F (1958) | 1.77 in (1972) |
| March 14 | 100.9°F (1971) | 34.0°F (1932) | 1.37 in (1972) |
| March 15 | 100.9°F (2025) | 39.0°F (1940) | 1.22 in (2000) |
| March 16 | 99.0°F (2026) | 37.9°F (1947) | 1.48 in (2003) |
| March 17 | 99.0°F (2026) | 39.9°F (1928) | 1.08 in (1926) |
| March 18 | 97.0°F (1971) | 37.0°F (1960) | 1.71 in (1915) |
| March 19 | 100.0°F (2013) | 35.1°F (1934) | 1.34 in (1944) |
| March 20 | 98.1°F (1945) | 36.0°F (1965) | 0.74 in (1914) |
| March 21 | 97.0°F (1952) | 39.0°F (1915) | 2.54 in (1940) |
| March 22 | 93.9°F (1953) | 39.0°F (1989) | 0.56 in (1929) |
| March 23 | 100.0°F (1975) | 39.0°F (1968) | 1.12 in (1941) |
| March 24 | 100.0°F (1936) | 35.1°F (1952) | 0.85 in (1967) |
| March 25 | 102.0°F (1945) | 42.1°F (1974) | 2.10 in (1940) |
| March 26 | 99.0°F (1928) | 39.0°F (1955) | 0.34 in (1974) |
| March 27 | 104.0°F (1984) | 37.9°F (1955) | 0.93 in (1923) |
| March 28 | 100.0°F (1972) | 43.0°F (1955) | 8.60 in (2025) |
| March 29 | 98.1°F (1972) | 39.0°F (1955) | 1.91 in (2023) |
| March 30 | 97.0°F (1946) | 37.9°F (1987) | 0.22 in (1965) |
| March 31 | 102.0°F (1989) | 34.0°F (1937) | 1.20 in (1932) |