Dalhart, Texas climate: Normal weather by month, frost dates and records
Dalhart's normal year runs from 22°F December nights to 94°F July afternoons, with 15.6 inches of precipitation and 20 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.8°C, December lows of −6°C, July highs of 34°C, 396 mm of precipitation a year.
- NOAA stationDalhart Municipal Airport
- Station IDUSW00093042
- Location36.02°N 102.55°W
- Elevation3,990 ft (1,216 m)
- Population8,443
On October 23, the normal high in Dalhart is 70°F and the normal low 39°F, and the chance of measurable rain or snow is 13%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Dalhart.
- Jan 51° 21°
- Feb 55° 24°
- Mar 64° 31°
- Apr 71° 39°
- May 80° 50°
- Jun 90° 60°
- Jul 94° 64°
- Aug 91° 63°
- Sep 84° 55°
- Oct 73° 42°
- Nov 61° 30°
- Dec 51° 22°
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 Dalhart each month?
July is the warmest month, with normal highs of 94°F; December the coldest, with normal lows of 22°F. The most precipitation falls in July (2.51 in), the least in February (0.35 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 51°F | 21°F | 36.3°F | 0.47 | 4.2 | 3 | <1 | 29 | 10 h |
| February | 55°F | 24°F | 39.5°F | 0.35 | 3.4 | 3 | <1 | 24 | 10 h 50 min |
| March | 64°F | 31°F | 47.2°F | 0.93 | 3.0 | 4 | <1 | 18 | 11 h 50 min |
| April | 71°F | 39°F | 55.0°F | 1.25 | 1.5 | 5 | 1 | 6 | 13 h |
| May | 80°F | 50°F | 64.9°F | 1.69 | 0.0 | 6 | 6 | 1 | 14 h |
| June | 90°F | 60°F | 74.9°F | 2.24 | 0.0 | 8 | 16 | <1 | 14 h 40 min |
| July | 94°F | 64°F | 78.7°F | 2.51 | 0.0 | 8 | 23 | <1 | 14 h 20 min |
| August | 91°F | 63°F | 76.9°F | 2.16 | 0.0 | 8 | 19 | <1 | 13 h 30 min |
| September | 84°F | 55°F | 69.5°F | 1.29 | 0.0 | 5 | 9 | <1 | 12 h 30 min |
| October | 73°F | 42°F | 57.1°F | 1.64 | 1.3 | 4 | 1 | 5 | 11 h 20 min |
| November | 61°F | 30°F | 45.1°F | 0.53 | 1.9 | 3 | <1 | 20 | 10 h 20 min |
| December | 51°F | 22°F | 36.1°F | 0.54 | 5.0 | 3 | <1 | 29 | 9 h 40 min |
| Year (annual) | 72°F | 42°F | 56.8°F | 15.60 | 20.3 | 61 | 74 | 131 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 11°C | −6°C | 2.4°C | 12 mm | 11 cm |
| February | 13°C | −4°C | 4.2°C | 9 mm | 9 cm |
| March | 18°C | −1°C | 8.4°C | 24 mm | 8 cm |
| April | 22°C | 4°C | 12.8°C | 32 mm | 4 cm |
| May | 27°C | 10°C | 18.3°C | 43 mm | 0 cm |
| June | 32°C | 15°C | 23.8°C | 57 mm | 0 cm |
| July | 34°C | 18°C | 25.9°C | 64 mm | 0 cm |
| August | 33°C | 17°C | 24.9°C | 55 mm | 0 cm |
| September | 29°C | 13°C | 20.8°C | 33 mm | 0 cm |
| October | 23°C | 5°C | 13.9°C | 42 mm | 3 cm |
| November | 16°C | −1°C | 7.3°C | 13 mm | 5 cm |
| December | 10°C | −6°C | 2.3°C | 14 mm | 13 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093042; 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 Dalhart?
Normal highs sit between 65°F and 85°F in April, May, September and October. Of those, October has the fewest days with rain (4).
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 USW00093042.
When is the last frost in Dalhart?
In Dalhart, the last spring frost (32°F) comes after April 21 in half of years and after May 4 in one year in ten; the first autumn frost comes before October 20 in half of years and before October 7 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 211 year in 10 after May 4; 9 in 10 after April 7
- First autumn frost, half of years before
- October 201 year in 10 before October 7; 9 in 10 before November 1
NOAA puts the median frost-free season at 181 days, and the season without a hard freeze (28°F) at 200 days.
A hard freeze (28°F) comes after April 10 in half of springs and before October 29 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Dalhart in zone 6b in ZIP code 79022, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Dalhart's NOAA station is in zone 7a: the coldest night of a typical year reaches 1°F (29 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00093042; 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 Dalhart?
In a normal year in Dalhart, 74 days a year reach 90°F (11 of them 100°F or more), 131 nights fall to 32°F or colder and 61 days bring measurable precipitation.
- Days at 90°F or more
- 74a normal year
- Days at 100°F or more
- 11a normal year
- Nights at 32°F or colder
- 131a normal year
- Days that stay below freezing
- 9high of 32°F or less
- Days with 0.01 inch of precipitation
- 61a normal year
- Days with 1 inch of snow or more
- 6a normal year
The highest temperature in this station's record (since 1948) is 110°F, on June 26, 2011; the lowest is −21°F, on January 4, 1959.
The wettest calendar year on that record is 1985, with 28.03 in; the snowiest season is 1982–83, with 47.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00093042; records: ACIS (NOAA Regional Climate Centers), station USW00093042. Records use complete months only; a month missing more than three days is left out.
How sunny is Dalhart?
Over a year 86% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Dalhart, 5.3 kWh per square metre a day. July is the sunniest month (90%) and February the cloudiest (79%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 82% | 3.0 |
| February | 79% | 3.8 |
| March | 82% | 5.2 |
| April | 83% | 6.4 |
| May | 85% | 7.3 |
| June | 89% | 7.8 |
| July | 90% | 7.5 |
| August | 88% | 6.6 |
| September | 89% | 5.7 |
| October | 85% | 4.3 |
| November | 85% | 3.3 |
| December | 80% | 2.6 |
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 Dalhart need?
A normal year in Dalhart brings 4,366 heating degree days, 19% fewer than the median U.S. place (5,373), and 1,403 cooling degree days, 55% more than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,129 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 888 | 0 |
| February | 714 | 0 |
| March | 553 | 1 |
| April | 310 | 10 |
| May | 97 | 96 |
| June | 5 | 302 |
| July | 1 | 427 |
| August | 1 | 371 |
| September | 39 | 176 |
| October | 265 | 21 |
| November | 596 | 1 |
| December | 897 | 0 |
| Year (annual) | 4,366 | 1,403 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093042. 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 Dalhart been warmer than normal lately?
2025 averaged 57.2°F, 0.4°F above the 1991-2020 normal of 56.8°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 56.5°F | −0.3°F | 11.65 | 11.7 |
| 2022 | 56.4°F | −0.4°F | 10.45 | – |
| 2023 | 57.3°F | +0.5°F | 21.85 | – |
| 2024 | 58.9°F | +2.1°F | 16.31 | – |
| 2025 | 57.2°F | +0.4°F | 13.47 | – |
Over 71 complete years from 1949 to 2025, the station's annual mean temperature rose at a fitted 2.9°F per century (+0.16°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00093042; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Dalhart's climate compare?
Dalhart is warmer than 9 of the other 320 places with their own NOAA record in Texas, and wetter than 22. Across the 7,247 U.S. stations with normals, its annual mean of 56.8°F is warmer than 66%.
In the Köppen classification computed from these normals, Dalhart 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.
What do Dalhart's other NOAA stations record?
2 more NOAA stations keep 1991-2020 normals in or near Dalhart. This page uses Dalhart Municipal Airport; the others differ by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Dalhart (6 mi SW) USC00412235 | 4 mi W | 4,000 ft | 54.0°F | 18°F | 91°F | – | – | April 28 |
| Dalhart station USC00412238 | 3 mi NE | 3,984 ft | 56.4°F | 20°F | 93°F | 17.5 | – | April 28 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Dalhart's climate
What is the coldest month in Dalhart?
December, with a normal high of 51°F and a normal low of 22°F. The warmest is July (94°F by day, 64°F at night).
Does it snow in Dalhart?
Yes: 20 inches in a normal year, falling on 10 days with 0.1 inch or more, the most in December (5.0 inches).
What is the rainiest month in Dalhart?
July, with 2.51 in of precipitation in a normal year; the driest is February with 0.35 in.
What plant hardiness zone is Dalhart in?
The USDA's 2023 map puts Dalhart in zone 6b in ZIP code 79022, the nearest ZIP area. By the same method at Dalhart's NOAA station, the coldest night of a typical year reaches 1°F (29 years, 1991-2020): zone 7a.
How late can frost come in Dalhart?
In half of years the last 32°F night comes after April 21; in one year in ten it comes after May 4. Waiting until May 4 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Hartley, TX13 miles from this station, 55.8°F a year
- Channing, TX26 miles from this station, 56.5°F a year
- Dumas, TX34 miles from this station, 56.5°F a year
- Amistad (5 mi SSW), NM37 miles from this station, 54.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made