Mason, Texas climate: Normal weather by month, frost dates and records
Mason's normal year runs from 34°F January nights to 96°F July afternoons, with 28.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.9°C, January lows of 1°C, July highs of 35°C, 734 mm of precipitation a year.
- NOAA stationMason
- Station IDUSC00415650
- Location30.75°N 99.23°W
- Elevation1,531 ft (467 m)
- Population2,152
On October 23, the normal high in Mason is 78°F and the normal low 51°F, and the chance of measurable rain or snow is 19%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Mason.
- Jan 61° 34°
- Feb 65° 38°
- Mar 72° 45°
- Apr 80° 52°
- May 86° 62°
- Jun 93° 68°
- Jul 96° 71°
- Aug 96° 70°
- Sep 90° 64°
- Oct 81° 53°
- Nov 70° 44°
- Dec 63° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Mason each month?
July is the warmest month, with normal highs of 96°F; January the coldest, with normal lows of 34°F. The most precipitation falls in May (4.21 in), the least in January (1.32 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 61°F | 34°F | 47.3°F | 1.32 | 5 | <1 | 17 | 10 h 20 min |
| February | 65°F | 38°F | 51.4°F | 1.88 | 6 | <1 | 10 | 11 h 10 min |
| March | 72°F | 45°F | 58.1°F | 2.15 | 6 | 1 | 4 | 12 h |
| April | 80°F | 52°F | 65.6°F | 2.30 | 5 | 3 | 1 | 12 h 50 min |
| May | 86°F | 62°F | 73.6°F | 4.21 | 8 | 10 | <1 | 13 h 40 min |
| June | 93°F | 68°F | 80.3°F | 3.80 | 6 | 22 | <1 | 14 h 10 min |
| July | 96°F | 71°F | 83.1°F | 2.30 | 5 | 27 | <1 | 14 h |
| August | 96°F | 70°F | 83.1°F | 2.01 | 4 | 27 | <1 | 13 h 20 min |
| September | 90°F | 64°F | 76.8°F | 3.03 | 6 | 17 | <1 | 12 h 20 min |
| October | 81°F | 53°F | 66.9°F | 2.58 | 5 | 5 | <1 | 11 h 30 min |
| November | 70°F | 44°F | 56.7°F | 1.94 | 5 | <1 | 5 | 10 h 40 min |
| December | 63°F | 36°F | 49.3°F | 1.38 | 5 | <1 | 14 | 10 h 10 min |
| Year (annual) | 79°F | 53°F | 66.0°F | 28.90 | 67 | 113 | 51 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 16°C | 1°C | 8.5°C | 34 mm |
| February | 19°C | 3°C | 10.8°C | 48 mm |
| March | 22°C | 7°C | 14.5°C | 55 mm |
| April | 26°C | 11°C | 18.7°C | 58 mm |
| May | 30°C | 17°C | 23.1°C | 107 mm |
| June | 34°C | 20°C | 26.8°C | 97 mm |
| July | 35°C | 22°C | 28.4°C | 58 mm |
| August | 35°C | 21°C | 28.4°C | 51 mm |
| September | 32°C | 18°C | 24.9°C | 77 mm |
| October | 27°C | 12°C | 19.4°C | 66 mm |
| November | 21°C | 6°C | 13.7°C | 49 mm |
| December | 17°C | 2°C | 9.6°C | 35 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00415650; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Mason?
Normal highs sit between 65°F and 85°F in February, March, April, October and November. Of those, November has the fewest days with rain (5).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00415650.
When is the last frost in Mason?
In Mason, the last spring frost (32°F) comes after March 18 in half of years and after April 7 in one year in ten; the first autumn frost comes before November 13 in half of years and before October 30 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 181 year in 10 after April 7; 9 in 10 after February 28
- First autumn frost, half of years before
- November 131 year in 10 before October 30; 9 in 10 before December 1
NOAA puts the median frost-free season at 241 days, and the season without a hard freeze (28°F) at 268 days.
A hard freeze (28°F) comes after March 4 in half of springs and before November 26 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Mason in zone 8b in ZIP code 76856, the nearest ZIP area.
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00415650; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Mason?
In a normal year in Mason, 113 days a year reach 90°F (19 of them 100°F or more), 51 nights fall to 32°F or colder and 67 days bring measurable precipitation.
- Days at 90°F or more
- 113a normal year
- Days at 100°F or more
- 19a normal year
- Nights at 32°F or colder
- 51a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 67a normal year
The highest temperature in this station's record (since 1957) is 111°F, on June 22, 2023; the lowest is 3°F, on December 30, 1983.
The wettest calendar year on that record is 1981, with 35.49 in; the snowiest season is 1965–66, with 12.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00415650; records: ACIS (NOAA Regional Climate Centers), station USC00415650. Records use complete months only; a month missing more than three days is left out.
How sunny is Mason?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Mason, 5.0 kWh per square metre a day. August is the sunniest month (87%) and February the cloudiest (75%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 77% | 3.3 |
| February | 75% | 4.0 |
| March | 75% | 4.9 |
| April | 78% | 5.8 |
| May | 78% | 6.1 |
| June | 86% | 7.0 |
| July | 86% | 6.8 |
| August | 87% | 6.4 |
| September | 81% | 5.3 |
| October | 82% | 4.5 |
| November | 79% | 3.4 |
| December | 77% | 3.0 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Mason need?
A normal year in Mason brings 2,115 heating degree days, 61% fewer than the median U.S. place (5,373), and 2,517 cooling degree days, 2.8 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,330 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 549 | 2 |
| February | 387 | 7 |
| March | 243 | 30 |
| April | 84 | 102 |
| May | 12 | 279 |
| June | 0 | 458 |
| July | 0 | 563 |
| August | 0 | 561 |
| September | 4 | 356 |
| October | 76 | 134 |
| November | 272 | 23 |
| December | 489 | 3 |
| Year (annual) | 2,115 | 2,517 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00415650. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Mason been warmer than normal lately?
2025 averaged 68.6°F, 2.6°F above the 1991-2020 normal of 66.0°F. 3 of the 3 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 68.0°F | +2.0°F | 15.54 |
| 2024 | 69.6°F | +3.6°F | – |
| 2025 | 68.6°F | +2.6°F | – |
Source: observed years: ACIS, station USC00415650. A year counts only with all twelve months complete.
How does Mason's climate compare?
Mason is warmer than 172 of the other 320 places with their own NOAA record in Texas, and wetter than 144. Across the 7,247 U.S. stations with normals, its annual mean of 66.0°F is warmer than 90%.
In the Köppen classification computed from these normals, Mason is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Questions about Mason's climate
What is the coldest month in Mason?
January, with a normal high of 61°F and a normal low of 34°F. The warmest is July (96°F by day, 71°F at night).
What is the rainiest month in Mason?
May, with 4.21 in of precipitation in a normal year; the driest is January with 1.32 in.
What plant hardiness zone is Mason in?
The USDA's 2023 map puts Mason in zone 8b in ZIP code 76856, the nearest ZIP area.
How late can frost come in Mason?
In half of years the last 32°F night comes after March 18; in one year in ten it comes after April 7. Waiting until April 7 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Brady, TX29 miles from this station, 65.4°F a year
- Harper, TX30 miles from this station, 64.7°F a year
- Llano, TX34 miles from this station, 67.1°F a year
- Menard, TX35 miles from this station, 63.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made