Morton, Texas climate: Normal weather by month, frost dates and records
Morton's normal year runs from 24°F January nights to 93°F July afternoons, with 17.6 inches of precipitation and 6 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 15.2°C, January lows of −4°C, July highs of 34°C, 447 mm of precipitation a year.
- NOAA stationMorton
- Station IDUSC00416074
- Location33.72°N 102.76°W
- Elevation3,766 ft (1,148 m)
- Population1,712
On October 23, the normal high in Morton is 73°F and the normal low 42°F, and the chance of measurable rain or snow is 15%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Morton.
- Jan 55° 24°
- Feb 59° 27°
- Mar 67° 34°
- Apr 75° 42°
- May 84° 52°
- Jun 92° 62°
- Jul 93° 65°
- Aug 92° 64°
- Sep 85° 56°
- Oct 75° 45°
- Nov 64° 33°
- Dec 55° 26°
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 Morton each month?
July is the warmest month, with normal highs of 93°F; January the coldest, with normal lows of 24°F. The most precipitation falls in August (2.53 in), the least in February (0.61 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 55°F | 24°F | 39.7°F | 0.62 | 1.4 | 3 | <1 | 26 | 10 h 10 min |
| February | 59°F | 27°F | 43.3°F | 0.61 | 1.4 | 3 | <1 | 20 | 11 h |
| March | 67°F | 34°F | 50.5°F | 1.11 | 0.4 | 4 | <1 | 12 | 12 h |
| April | 75°F | 42°F | 58.5°F | 0.87 | 0.1 | 3 | 1 | 3 | 13 h |
| May | 84°F | 52°F | 67.9°F | 1.94 | 0.0 | 6 | 9 | <1 | 13 h 50 min |
| June | 92°F | 62°F | 76.8°F | 2.27 | 0.0 | 7 | 20 | <1 | 14 h 20 min |
| July | 93°F | 65°F | 79.1°F | 2.36 | 0.0 | 6 | 23 | <1 | 14 h 10 min |
| August | 92°F | 64°F | 77.5°F | 2.53 | 0.0 | 7 | 21 | <1 | 13 h 30 min |
| September | 85°F | 56°F | 70.3°F | 2.32 | 0.0 | 6 | 9 | <1 | 12 h 30 min |
| October | 75°F | 45°F | 59.8°F | 1.48 | 0.2 | 5 | 2 | 2 | 11 h 20 min |
| November | 64°F | 33°F | 48.5°F | 0.85 | 1.2 | 3 | <1 | 14 | 10 h 30 min |
| December | 55°F | 26°F | 40.6°F | 0.63 | 1.6 | 3 | <1 | 25 | 10 h |
| Year (annual) | 75°F | 44°F | 59.4°F | 17.59 | 6.3 | 56 | 85 | 102 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 13°C | −4°C | 4.3°C | 16 mm | 4 cm |
| February | 15°C | −3°C | 6.3°C | 15 mm | 4 cm |
| March | 19°C | 1°C | 10.3°C | 28 mm | 1 cm |
| April | 24°C | 5°C | 14.7°C | 22 mm | 0 cm |
| May | 29°C | 11°C | 19.9°C | 49 mm | 0 cm |
| June | 33°C | 17°C | 24.9°C | 58 mm | 0 cm |
| July | 34°C | 18°C | 26.2°C | 60 mm | 0 cm |
| August | 33°C | 18°C | 25.3°C | 64 mm | 0 cm |
| September | 29°C | 13°C | 21.3°C | 59 mm | 0 cm |
| October | 24°C | 7°C | 15.4°C | 38 mm | 1 cm |
| November | 18°C | 1°C | 9.2°C | 22 mm | 3 cm |
| December | 13°C | −3°C | 4.8°C | 16 mm | 4 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00416074; 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 Morton?
Normal highs sit between 65°F and 85°F in March, April, May, September and October. Of those, April 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 USC00416074.
When is the last frost in Morton?
In Morton, the last spring frost (32°F) comes after April 11 in half of years and after April 26 in one year in ten; the first autumn frost comes before October 31 in half of years and before October 16 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 111 year in 10 after April 26; 9 in 10 after March 28
- First autumn frost, half of years before
- October 311 year in 10 before October 16; 9 in 10 before November 11
NOAA puts the median frost-free season at 199 days, and the season without a hard freeze (28°F) at 220 days.
A hard freeze (28°F) comes after March 31 in half of springs and before November 7 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Morton in zone 7b in ZIP code 79346, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Morton's NOAA station is in zone 7b: the coldest night of a typical year reaches 8°F (28 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 USC00416074; 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 in Morton?
In a normal year in Morton, 85 days a year reach 90°F (11 of them 100°F or more), 102 nights fall to 32°F or colder and 56 days bring measurable precipitation.
- Days at 90°F or more
- 85a normal year
- Days at 100°F or more
- 11a normal year
- Nights at 32°F or colder
- 102a normal year
- Days that stay below freezing
- 6high of 32°F or less
- Days with 0.01 inch of precipitation
- 56a normal year
- Days with 1 inch of snow or more
- 3a normal year
The highest temperature in this station's record (since 1962) is 111°F, on June 26, 2011; the lowest is −12°F, on January 13, 1963.
The wettest calendar year on that record is 2004, with 34.96 in; the snowiest season is 1982–83, with 36.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00416074; records: ACIS (NOAA Regional Climate Centers), station USC00416074. Records use complete months only; a month missing more than three days is left out.
How sunny is Morton?
Over a year 87% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Morton, 5.5 kWh per square metre a day. June is the sunniest month (91%) and February the cloudiest (82%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 85% | 3.4 |
| February | 82% | 4.3 |
| March | 84% | 5.5 |
| April | 87% | 6.8 |
| May | 86% | 7.3 |
| June | 91% | 7.8 |
| July | 90% | 7.4 |
| August | 90% | 6.8 |
| September | 86% | 5.6 |
| October | 85% | 4.5 |
| November | 85% | 3.6 |
| December | 83% | 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 Morton need?
A normal year in Morton brings 3,605 heating degree days, 33% fewer than the median U.S. place (5,373), and 1,585 cooling degree days, 75% 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 4,608 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 784 | 0 |
| February | 608 | 0 |
| March | 454 | 3 |
| April | 218 | 23 |
| May | 61 | 153 |
| June | 2 | 357 |
| July | 0 | 436 |
| August | 1 | 390 |
| September | 29 | 188 |
| October | 195 | 35 |
| November | 498 | 1 |
| December | 756 | 0 |
| Year (annual) | 3,605 | 1,585 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00416074. 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 Morton been warmer than normal lately?
2025 averaged 60.7°F, 1.3°F above the 1991-2020 normal of 59.4°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 59.7°F | +0.3°F | 17.57 | 8.3 |
| 2022 | 59.5°F | +0.1°F | 11.05 | 3.1 |
| 2023 | 60.8°F | +1.4°F | 14.00 | 5.0 |
| 2024 | 61.6°F | +2.2°F | 16.22 | 4.4 |
| 2025 | 60.7°F | +1.3°F | 15.76 | 4.3 |
Over 47 complete years from 1965 to 2025, the station's annual mean temperature rose at a fitted 7.0°F per century (+0.39°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00416074; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Morton's climate compare?
Morton is warmer than 29 of the other 320 places with their own NOAA record in Texas, and wetter than 28. Across the 7,247 U.S. stations with normals, its annual mean of 59.4°F is warmer than 73%.
In the Köppen classification computed from these normals, Morton 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 Morton share this climate record?
3 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.
- Whiteface, TX378 people · 12 mi SE
- Bledsoe, TX120 people · 16 mi SW
- Causey, NM69 people · 23 mi NW
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 Morton's climate
What is the coldest month in Morton?
January, with a normal high of 55°F and a normal low of 24°F. The warmest is July (93°F by day, 65°F at night).
Does it snow in Morton?
Yes: 6 inches in a normal year, falling on 4 days with 0.1 inch or more, the most in December (1.6 inches).
What is the rainiest month in Morton?
August, with 2.53 in of precipitation in a normal year; the driest is February with 0.61 in.
What plant hardiness zone is Morton in?
The USDA's 2023 map puts Morton in zone 7b in ZIP code 79346, the nearest ZIP area. By the same method at Morton's NOAA station, the coldest night of a typical year reaches 8°F (28 years, 1991-2020): zone 7b.
How late can frost come in Morton?
In half of years the last 32°F night comes after April 11; in one year in ten it comes after April 26. Waiting until April 26 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Levelland, TX25 miles from this station, 59.4°F a year
- Littlefield, TX30 miles from this station, 58.5°F a year
- Muleshoe, TX35 miles from this station, 56.7°F a year
- Arch, NM36 miles from this station, 57.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made