Mount Locke, Texas climate: Climate normals at a NOAA weather station
Mount Locke's normal year runs from 32°F January nights to 87°F June afternoons, with 19.0 inches of precipitation and 6 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 15.1°C, January lows of 0°C, June highs of 30°C, 482 mm of precipitation a year.
- NOAA stationMount Locke
- Station IDUSC00416104
- Location30.71°N 104.02°W
- Elevation6,790 ft (2,070 m)
On October 23, the normal high in Mount Locke is 72°F and the normal low 47°F, and the chance of measurable rain or snow is 18%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Mount Locke.
- Jan 55° 32°
- Feb 59° 35°
- Mar 66° 39°
- Apr 73° 45°
- May 81° 53°
- Jun 87° 59°
- Jul 85° 60°
- Aug 84° 59°
- Sep 79° 55°
- Oct 74° 49°
- Nov 64° 39°
- Dec 56° 33°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Mount Locke each month?
June is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 32°F. The most precipitation falls in July (3.99 in), the least in March (0.43 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 55°F | 32°F | 43.7°F | 0.62 | 1.8 | 3 | <1 | 15 | 10 h 20 min |
| February | 59°F | 35°F | 47.0°F | 0.49 | 1.0 | 3 | <1 | 11 | 11 h 10 min |
| March | 66°F | 39°F | 52.8°F | 0.43 | 0.1 | 3 | <1 | 7 | 12 h |
| April | 73°F | 45°F | 59.3°F | 0.51 | 0.0 | 3 | <1 | 3 | 12 h 50 min |
| May | 81°F | 53°F | 67.1°F | 1.38 | 0.0 | 6 | 4 | <1 | 13 h 40 min |
| June | 87°F | 59°F | 73.1°F | 2.50 | 0.0 | 9 | 10 | <1 | 14 h 10 min |
| July | 85°F | 60°F | 72.3°F | 3.99 | 0.0 | 13 | 8 | <1 | 14 h |
| August | 84°F | 59°F | 71.6°F | 3.45 | 0.0 | 12 | 5 | <1 | 13 h 20 min |
| September | 79°F | 55°F | 67.0°F | 2.96 | 0.0 | 10 | 2 | <1 | 12 h 20 min |
| October | 74°F | 49°F | 61.0°F | 1.40 | 0.1 | 6 | <1 | 2 | 11 h 30 min |
| November | 64°F | 39°F | 51.4°F | 0.67 | 0.4 | 3 | <1 | 7 | 10 h 40 min |
| December | 56°F | 33°F | 44.6°F | 0.58 | 2.8 | 3 | <1 | 14 | 10 h 10 min |
| Year (annual) | 72°F | 47°F | 59.2°F | 18.98 | 6.2 | 74 | 28 | 59 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 13°C | 0°C | 6.5°C | 16 mm | 5 cm |
| February | 15°C | 2°C | 8.3°C | 12 mm | 3 cm |
| March | 19°C | 4°C | 11.6°C | 11 mm | 0 cm |
| April | 23°C | 7°C | 15.2°C | 13 mm | 0 cm |
| May | 27°C | 12°C | 19.5°C | 35 mm | 0 cm |
| June | 30°C | 15°C | 22.8°C | 64 mm | 0 cm |
| July | 29°C | 15°C | 22.4°C | 101 mm | 0 cm |
| August | 29°C | 15°C | 22.0°C | 88 mm | 0 cm |
| September | 26°C | 13°C | 19.4°C | 75 mm | 0 cm |
| October | 23°C | 9°C | 16.1°C | 36 mm | 0 cm |
| November | 18°C | 4°C | 10.8°C | 17 mm | 1 cm |
| December | 13°C | 1°C | 7.0°C | 15 mm | 7 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00416104; 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.
Which months are mildest at Mount Locke?
Normal highs sit between 65°F and 85°F in March, April, May, July, August, September and October. Of those, March has the fewest days with rain (3).
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 USC00416104.
When is the last frost at Mount Locke?
In Mount Locke, the last spring frost (32°F) comes after April 16 in half of years and after May 3 in one year in ten; the first autumn frost comes before October 29 in half of years and before October 12 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
- April 161 year in 10 after May 3; 9 in 10 after March 30
- First autumn frost, half of years before
- October 291 year in 10 before October 12; 9 in 10 before November 14
NOAA puts the median frost-free season at 194 days, and the season without a hard freeze (28°F) at 217 days.
A hard freeze (28°F) comes after April 3 in half of springs and before November 6 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Mount Locke in zone 8a in ZIP code 79734, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 8a: the coldest night of a typical year reaches 11°F (29 complete years).
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00416104; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 at Mount Locke?
In a normal year in Mount Locke, 28 days a year reach 90°F, 59 nights fall to 32°F or colder and 74 days bring measurable precipitation.
- Days at 90°F or more
- 28a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 59a normal year
- Days that stay below freezing
- 3high of 32°F or less
- Days with 0.01 inch of precipitation
- 74a normal year
- Days with 1 inch of snow or more
- 2a normal year
The highest temperature in this station's record (since 1935) is 104°F, on June 28, 1994; the lowest is −10°F, on January 11, 1962.
The wettest calendar year on that record is 2004, with 35.20 in; the snowiest season is 1946–47, with 29.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00416104; records: ACIS (NOAA Regional Climate Centers), station USC00416104. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Mount Locke?
Over a year 87% of the sunlight that would reach the ground under clear skies gets through the clouds at Mount Locke, 5.7 kWh per square metre a day. May is the sunniest month (91%) and July the cloudiest (82%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 86% | 3.8 |
| February | 87% | 4.8 |
| March | 88% | 6.0 |
| April | 90% | 7.2 |
| May | 91% | 7.7 |
| June | 89% | 7.6 |
| July | 82% | 6.7 |
| August | 84% | 6.4 |
| September | 85% | 5.7 |
| October | 89% | 5.1 |
| November | 88% | 4.0 |
| December | 86% | 3.5 |
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 many heating and cooling degree days does Mount Locke record?
A normal year at Mount Locke brings 3,068 heating degree days, 43% fewer than the median U.S. place (5,373), and 989 cooling degree days, 9% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,189 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 660 | 0 |
| February | 504 | 0 |
| March | 383 | 5 |
| April | 197 | 25 |
| May | 64 | 129 |
| June | 5 | 247 |
| July | 5 | 231 |
| August | 6 | 210 |
| September | 44 | 105 |
| October | 160 | 36 |
| November | 408 | 2 |
| December | 632 | 0 |
| Year (annual) | 3,068 | 989 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00416104. 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.
Have recent years at Mount Locke been warmer than normal?
2025 averaged 61.9°F, 2.6°F above the 1991-2020 normal of 59.2°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 60.3°F | +1.1°F | 18.61 | 4.2 |
| 2024 | 62.3°F | +3.1°F | 10.44 | 0.0 |
| 2025 | 61.9°F | +2.6°F | 27.59 | 3.5 |
Over 66 complete years from 1936 to 2025, the station's annual mean temperature rose at a fitted 4.4°F per century (+0.24°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00416104; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Mount Locke's climate compare?
Mount Locke is warmer than 26 of the 321 places with their own NOAA record in Texas, and wetter than 40. Across the 7,247 U.S. stations with normals, its annual mean of 59.2°F is warmer than 72%.
In the Köppen classification computed from these normals, Mount Locke is BSk: cold semi-arid steppe. 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 Mount Locke's climate
What is the coldest month at Mount Locke?
January, with a normal high of 55°F and a normal low of 32°F. The warmest is June (87°F by day, 59°F at night).
Does it snow at Mount Locke?
Yes: 6 inches in a normal year, falling on 4 days with 0.1 inch or more, the most in December (2.8 inches).
What is the rainiest month at Mount Locke?
July, with 3.99 in of precipitation in a normal year; the driest is March with 0.43 in.
What plant hardiness zone is Mount Locke in?
The USDA's 2023 map puts Mount Locke in zone 8a in ZIP code 79734, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 11°F (29 years, 1991-2020): zone 8a.
How late can frost come at Mount Locke?
In half of years the last 32°F night comes after April 16; in one year in ten it comes after May 3. Waiting until May 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Fort Davis, TX11 miles from this station, 62.8°F a year
- Kent (8 mi SE), TX22 miles from this station, 63.3°F a year
- Balmorhea, TX25 miles from this station, 63.9°F a year
- Marfa, TX27 miles from this station, 59.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made