McLean, Texas climate: Climate normals at a NOAA weather station
McLean's normal year runs from 27°F January nights to 92°F July afternoons, with 26.4 inches of precipitation and 8 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 15.5°C, January lows of −3°C, July highs of 33°C, 670 mm of precipitation a year.
- NOAA stationMcLean
- Station IDUSC00415770
- Location35.24°N 100.59°W
- Elevation2,632 ft (802 m)
On October 23, the normal high in McLean is 72°F and the normal low 45°F, and the chance of measurable rain or snow is 11%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for McLean.
- Jan 52° 27°
- Feb 56° 30°
- Mar 66° 37°
- Apr 74° 45°
- May 81° 54°
- Jun 89° 63°
- Jul 92° 67°
- Aug 91° 66°
- Sep 85° 60°
- Oct 74° 48°
- Nov 63° 37°
- Dec 52° 29°
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 McLean each month?
July is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 27°F. The most precipitation falls in May (3.91 in), the least in February (0.86 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 52°F | 27°F | 39.6°F | 0.91 | 1.6 | 3 | <1 | 23 | 10 h |
| February | 56°F | 30°F | 43.0°F | 0.86 | 0.6 | 3 | <1 | 17 | 10 h 50 min |
| March | 66°F | 37°F | 51.4°F | 1.61 | 1.1 | 4 | <1 | 10 | 11 h 50 min |
| April | 74°F | 45°F | 59.3°F | 2.41 | 0.1 | 4 | 1 | 2 | 13 h |
| May | 81°F | 54°F | 67.5°F | 3.91 | 0.0 | 6 | 6 | <1 | 14 h |
| June | 89°F | 63°F | 75.8°F | 3.43 | 0.0 | 6 | 12 | <1 | 14 h 30 min |
| July | 92°F | 67°F | 79.5°F | 2.99 | 0.0 | 5 | 20 | <1 | 14 h 20 min |
| August | 91°F | 66°F | 78.7°F | 3.18 | 0.0 | 6 | 19 | <1 | 13 h 30 min |
| September | 85°F | 60°F | 72.2°F | 2.48 | 0.0 | 3 | 8 | <1 | 12 h 30 min |
| October | 74°F | 48°F | 61.0°F | 2.66 | 0.0 | 4 | 1 | 1 | 11 h 20 min |
| November | 63°F | 37°F | 49.8°F | 0.96 | 1.2 | 3 | <1 | 10 | 10 h 20 min |
| December | 52°F | 29°F | 40.4°F | 0.98 | 2.9 | 2 | <1 | 21 | 9 h 50 min |
| Year (annual) | 73°F | 47°F | 59.9°F | 26.38 | 7.5 | 48 | 67 | 84 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 11°C | −3°C | 4.2°C | 23 mm | 4 cm |
| February | 14°C | −1°C | 6.1°C | 22 mm | 2 cm |
| March | 19°C | 3°C | 10.8°C | 41 mm | 3 cm |
| April | 23°C | 7°C | 15.2°C | 61 mm | 0 cm |
| May | 27°C | 12°C | 19.7°C | 99 mm | 0 cm |
| June | 31°C | 17°C | 24.3°C | 87 mm | 0 cm |
| July | 33°C | 20°C | 26.4°C | 76 mm | 0 cm |
| August | 33°C | 19°C | 25.9°C | 81 mm | 0 cm |
| September | 29°C | 15°C | 22.3°C | 63 mm | 0 cm |
| October | 24°C | 9°C | 16.1°C | 68 mm | 0 cm |
| November | 17°C | 3°C | 9.9°C | 24 mm | 3 cm |
| December | 11°C | −2°C | 4.7°C | 25 mm | 7 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00415770; 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 McLean?
Normal highs sit between 65°F and 85°F in March, April, May, September and October. Of those, September 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 USC00415770.
When is the last frost at McLean?
In McLean, the last spring frost (32°F) comes after April 10 in half of years and after April 29 in one year in ten; the first autumn frost comes before October 30 in half of years and before October 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
- April 101 year in 10 after April 29; 9 in 10 after March 24
- First autumn frost, half of years before
- October 301 year in 10 before October 14; 9 in 10 before November 13
NOAA puts the median frost-free season at 201 days, and the season without a hard freeze (28°F) at 224 days.
A hard freeze (28°F) comes after March 30 in half of springs and before November 9 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts McLean in zone 7a in ZIP code 79057, 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 USC00415770; 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 at McLean?
In a normal year in McLean, 67 days a year reach 90°F (6 of them 100°F or more), 84 nights fall to 32°F or colder and 48 days bring measurable precipitation.
- Days at 90°F or more
- 67a normal year
- Days at 100°F or more
- 6a normal year
- Nights at 32°F or colder
- 84a normal year
- Days that stay below freezing
- 7high of 32°F or less
- Days with 0.01 inch of precipitation
- 48a normal year
- Days with 1 inch of snow or more
- 3a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00415770.
How sunny is it at McLean?
Over a year 84% of the sunlight that would reach the ground under clear skies gets through the clouds at McLean, 5.1 kWh per square metre a day. July is the sunniest month (89%) and February the cloudiest (79%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 83% | 3.1 |
| February | 79% | 3.8 |
| March | 80% | 5.0 |
| April | 82% | 6.2 |
| May | 82% | 6.8 |
| June | 88% | 7.4 |
| July | 89% | 7.2 |
| August | 87% | 6.4 |
| September | 87% | 5.4 |
| October | 82% | 4.2 |
| November | 83% | 3.2 |
| December | 80% | 2.7 |
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 McLean record?
A normal year at McLean brings 3,504 heating degree days, 35% fewer than the median U.S. place (5,373), and 1,667 cooling degree days, 84% 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 4,793 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 787 | 0 |
| February | 616 | 0 |
| March | 428 | 7 |
| April | 202 | 33 |
| May | 56 | 136 |
| June | 3 | 328 |
| July | 0 | 449 |
| August | 0 | 425 |
| September | 20 | 237 |
| October | 169 | 47 |
| November | 460 | 4 |
| December | 762 | 0 |
| Year (annual) | 3,504 | 1,667 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00415770. 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 McLean's climate compare?
McLean is warmer than 34 of the 321 places with their own NOAA record in Texas, and wetter than 125. Across the 7,247 U.S. stations with normals, its annual mean of 59.9°F is warmer than 75%.
In the Köppen classification computed from these normals, McLean 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.
Which places near McLean share this climate record?
2 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- McLean, TX648 people · 0 mi SW
- Alanreed, TX16 people · 8 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about McLean's climate
What is the coldest month at McLean?
January, with a normal high of 52°F and a normal low of 27°F. The warmest is July (92°F by day, 67°F at night).
Does it snow at McLean?
Yes: 8 inches in a normal year, falling on 3 days with 0.1 inch or more, the most in December (2.9 inches).
What is the rainiest month at McLean?
May, with 3.91 in of precipitation in a normal year; the driest is February with 0.86 in.
What plant hardiness zone is McLean in?
The USDA's 2023 map puts McLean in zone 7a in ZIP code 79057, the nearest ZIP area.
How late can frost come at McLean?
In half of years the last 32°F night comes after April 10; in one year in ten it comes after April 29. Waiting until April 29 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Shamrock, TX19 miles from this station, 58.7°F a year
- Clarendon, TX27 miles from this station, 59.2°F a year
- Pampa, TX30 miles from this station, 57.8°F a year
- Miami, TX32 miles from this station, 57.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made