Study Butte, Texas climate: Normal weather by month, frost dates and records
Study Butte's normal year runs from 36°F January nights to 99°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 21.7°C, January lows of 2°C, July highs of 37°C.
- NOAA stationStudy Butte
- Station IDUSC00418714
- Location29.33°N 103.55°W
- Elevation2,563 ft (781 m)
- Population (census place)172
On October 23, the normal high in Study Butte is 85°F and the normal low 55°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Study Butte.
- Jan 67° 36°
- Feb 74° 41°
- Mar 83° 47°
- Apr 90° 55°
- May 97° 66°
- Jun 100° 73°
- Jul 99° 74°
- Aug 98° 73°
- Sep 94° 68°
- Oct 88° 58°
- Nov 76° 46°
- Dec 67° 37°
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 Study Butte each month?
July is the warmest month, with normal highs of 99°F; January the coldest, with normal lows of 36°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 67°F | 36°F | 51.8°F | – | <1 | 7 | 10 h 30 min |
| February | 74°F | 41°F | 57.4°F | – | 1 | 3 | 11 h 10 min |
| March | 83°F | 47°F | 65.3°F | – | 6 | 1 | 12 h |
| April | 90°F | 55°F | 72.4°F | – | 17 | <1 | 12 h 50 min |
| May | 97°F | 66°F | 81.6°F | – | 28 | <1 | 13 h 40 min |
| June | 100°F | 73°F | 86.5°F | – | 29 | <1 | 14 h |
| July | 99°F | 74°F | 86.6°F | – | 30 | <1 | 13 h 50 min |
| August | 98°F | 73°F | 85.6°F | – | 30 | <1 | 13 h 10 min |
| September | 94°F | 68°F | 81.1°F | – | 24 | <1 | 12 h 20 min |
| October | 88°F | 58°F | 72.5°F | – | 13 | <1 | 11 h 30 min |
| November | 76°F | 46°F | 60.8°F | – | 1 | 1 | 10 h 40 min |
| December | 67°F | 37°F | 52.0°F | – | <1 | 10 | 10 h 20 min |
| Year (annual) | 86°F | 56°F | 71.1°F | – | 177 | 21 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 20°C | 2°C | 11.0°C |
| February | 23°C | 5°C | 14.1°C |
| March | 28°C | 9°C | 18.5°C |
| April | 32°C | 13°C | 22.4°C |
| May | 36°C | 19°C | 27.6°C |
| June | 38°C | 23°C | 30.3°C |
| July | 37°C | 23°C | 30.3°C |
| August | 37°C | 23°C | 29.8°C |
| September | 35°C | 20°C | 27.3°C |
| October | 31°C | 14°C | 22.5°C |
| November | 24°C | 8°C | 16.0°C |
| December | 20°C | 3°C | 11.1°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Lajitas (13 miles away), gets 1 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00418714; 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 Study Butte?
Normal highs sit between 65°F and 85°F in January, February, March, November and December.
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 USC00418714.
When is the last frost in Study Butte?
In Study Butte, the last spring frost (32°F) comes after February 21 in half of years and after March 14 in one year in ten; the first autumn frost comes before November 30 in half of years and before November 14 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
- February 211 year in 10 after March 14; 9 in 10 after January 29
- First autumn frost, half of years before
- November 301 year in 10 before November 14; 9 in 10 before December 16
NOAA puts the median frost-free season at 282 days, and the season without a hard freeze (28°F) at 311 days.
A hard freeze (28°F) comes after February 1 in half of springs and before December 11 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Study Butte in zone 9a in ZIP code 79852, 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 USC00418714; 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 Study Butte?
In a normal year in Study Butte, 177 days a year reach 90°F (73 of them 100°F or more) and 21 nights fall to 32°F or colder.
- Days at 90°F or more
- 177a normal year
- Days at 100°F or more
- 73a normal year
- Nights at 32°F or colder
- 21a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00418714.
How sunny is Study Butte?
Over a year 89% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Study Butte, 5.7 kWh per square metre a day. June is the sunniest month (92%) and January the cloudiest (85%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 85% | 3.8 |
| February | 87% | 4.8 |
| March | 89% | 6.0 |
| April | 90% | 7.0 |
| May | 91% | 7.5 |
| June | 92% | 7.6 |
| July | 87% | 7.0 |
| August | 88% | 6.6 |
| September | 87% | 5.7 |
| October | 90% | 5.1 |
| November | 89% | 4.1 |
| December | 87% | 3.6 |
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 Study Butte need?
A normal year in Study Butte brings 1,325 heating degree days, 75% fewer than the median U.S. place (5,373), and 3,590 cooling degree days, 4.0 times the median (908). Two months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 7,900 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 411 | 1 |
| February | 228 | 16 |
| March | 82 | 91 |
| April | 19 | 243 |
| May | 0 | 515 |
| June | 0 | 646 |
| July | 0 | 670 |
| August | 0 | 637 |
| September | 0 | 483 |
| October | 19 | 253 |
| November | 161 | 35 |
| December | 404 | 1 |
| Year (annual) | 1,325 | 3,590 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00418714. 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.
How does Study Butte's climate compare?
Study Butte is warmer than 277 of the other 320 places with their own NOAA record in Texas. Across the 7,247 U.S. stations with normals, its annual mean of 71.1°F is warmer than 96%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Questions about Study Butte's climate
What is the coldest month in Study Butte?
January, with a normal high of 67°F and a normal low of 36°F. The warmest is July (99°F by day, 74°F at night).
Does it snow in Study Butte?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Study Butte's NOAA station; the nearest record that keeps one, Lajitas (13 miles away), records 1 inches of snow in a normal year.
What plant hardiness zone is Study Butte in?
The USDA's 2023 map puts Study Butte in zone 9a in ZIP code 79852, the nearest ZIP area.
How late can frost come in Study Butte?
In half of years the last 32°F night comes after February 21; in one year in ten it comes after March 14. Waiting until March 14 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Terlingua, TX3 miles from this station, 70.3°F a year
- Lake Ament, TX9 miles from this station, 66.7°F a year
- Lajitas, TX13 miles from this station, 70.7°F a year
- Castolon, TX14 miles from this station, 72.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made