Mason weather by month
What a typical year looks like in Mason, Texas: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Mason, 0 km from Mason; records cover 1957–2026.
The year at a glance
- Precipitation a year
- 28.9 in734 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 22
- First fall freeze
- Nov 12
- Heating degree days
- 2,116
- Cooling degree days
- 2,517
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 19°−7° (heating, 99%) and 103°39° (cooling, 1%).
Month by month
Mason in January
Highs average 61°16° and lows 34°1°, with 1.3 in34 mm of precipitation in a typical January.
- Record high
- 90°32° (2017)
- Record low
- 6°−14° (1982)
- Heating degree days
- 549
- Cooling degree days
- 2
Mason in February
Highs average 65°19° and lows 38°3°, with 1.9 in48 mm of precipitation in a typical February.
- Record high
- 100°38° (1996)
- Record low
- 3°−16° (1985)
- Heating degree days
- 387
- Cooling degree days
- 6
Mason in March
Highs average 72°22° and lows 45°7°, with 2.2 in55 mm of precipitation in a typical March.
- Record high
- 99°37° (2026)
- Record low
- 11°−12° (1980)
- Heating degree days
- 243
- Cooling degree days
- 30
Mason in April
Highs average 80°26° and lows 52°11°, with 2.3 in58 mm of precipitation in a typical April.
- Record high
- 101°38° (2012)
- Record low
- 25°−4° (1987)
- Heating degree days
- 84
- Cooling degree days
- 102
Mason in May
Highs average 86°30° and lows 62°17°, with 4.2 in107 mm of precipitation in a typical May.
- Record high
- 108°42° (2022)
- Record low
- 36°2° (1970)
- Heating degree days
- 12
- Cooling degree days
- 279
Mason in June
Highs average 93°34° and lows 68°20°, with 3.8 in97 mm of precipitation in a typical June.
- Record high
- 111°44° (2023)
- Record low
- 46°8° (1964)
- Heating degree days
- 0
- Cooling degree days
- 458
Mason in July
Highs average 96°35° and lows 71°22°, with 2.3 in58 mm of precipitation in a typical July.
- Record high
- 111°44° (2018)
- Record low
- 54°12° (1968)
- Heating degree days
- 0
- Cooling degree days
- 563
Mason in August
Highs average 96°35° and lows 70°21°, with 2 in51 mm of precipitation in a typical August.
- Record high
- 110°43° (2023)
- Record low
- 51°11° (1967)
- Heating degree days
- 0
- Cooling degree days
- 561
Mason in September
Highs average 90°32° and lows 64°18°, with 3 in77 mm of precipitation in a typical September.
- Record high
- 114°46° (2026)
- Record low
- 36°2° (1983)
- Heating degree days
- 4
- Cooling degree days
- 356
Mason in OctoberThis month
Highs average 81°27° and lows 53°12°, with 2.6 in66 mm of precipitation in a typical October.
- Record high
- 102°39° (2020)
- Record low
- 26°−3° (1980)
- Heating degree days
- 76
- Cooling degree days
- 134
Mason in November
Highs average 70°21° and lows 44°6°, with 1.9 in49 mm of precipitation in a typical November.
- Record high
- 93°34° (2010)
- Record low
- 14°−10° (1970)
- Heating degree days
- 272
- Cooling degree days
- 23
Mason in December
Highs average 63°17° and lows 36°2°, with 1.4 in35 mm of precipitation in a typical December.
- Record high
- 88°31° (2005)
- Record low
- 3°−16° (1983)
- Heating degree days
- 489
- Cooling degree days
- 3