Monahans, Texas climate: Normal weather by month, frost dates and records
Monahans's normal year runs from 32°F January nights to 97°F July afternoons, with 13.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.8°C, January lows of 0°C, July highs of 36°C, 340 mm of precipitation a year.
- NOAA stationMonahans (6 mi ENE)
- Station IDUSW00003047
- Location31.62°N 102.81°W
- Elevation2,724 ft (830 m)
- Population7,334
On October 23, the normal high in Monahans is 78°F and the normal low 50°F, and the chance of measurable rain or snow is 12%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Monahans.
- Jan 60° 32°
- Feb 65° 36°
- Mar 74° 44°
- Apr 82° 52°
- May 89° 60°
- Jun 96° 70°
- Jul 97° 71°
- Aug 95° 70°
- Sep 89° 63°
- Oct 80° 53°
- Nov 69° 40°
- Dec 60° 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 in Monahans each month?
July is the warmest month, with normal highs of 97°F; January the coldest, with normal lows of 32°F. The most precipitation falls in September (2.12 in), the least in February (0.40 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 60°F | 32°F | 46.2°F | 0.61 | 3 | <1 | 17 | 10 h 20 min |
| February | 65°F | 36°F | 50.4°F | 0.40 | 3 | <1 | 10 | 11 h |
| March | 74°F | 44°F | 58.6°F | 0.64 | 4 | 2 | 3 | 12 h |
| April | 82°F | 52°F | 66.7°F | 0.64 | 3 | 7 | 1 | 13 h |
| May | 89°F | 60°F | 74.6°F | 1.09 | 4 | 16 | <1 | 13 h 40 min |
| June | 96°F | 70°F | 82.8°F | 1.64 | 5 | 26 | <1 | 14 h 10 min |
| July | 97°F | 71°F | 83.7°F | 1.91 | 5 | 27 | <1 | 14 h |
| August | 95°F | 70°F | 82.6°F | 1.94 | 7 | 27 | <1 | 13 h 20 min |
| September | 89°F | 63°F | 76.0°F | 2.12 | 7 | 14 | <1 | 12 h 20 min |
| October | 80°F | 53°F | 66.4°F | 1.12 | 5 | 5 | <1 | 11 h 30 min |
| November | 69°F | 40°F | 54.6°F | 0.73 | 3 | <1 | 6 | 10 h 30 min |
| December | 60°F | 33°F | 46.6°F | 0.54 | 3 | <1 | 15 | 10 h 10 min |
| Year (annual) | 80°F | 52°F | 65.8°F | 13.38 | 50 | 125 | 52 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 16°C | 0°C | 7.9°C | 15 mm |
| February | 18°C | 2°C | 10.2°C | 10 mm |
| March | 23°C | 7°C | 14.8°C | 16 mm |
| April | 28°C | 11°C | 19.3°C | 16 mm |
| May | 32°C | 16°C | 23.7°C | 28 mm |
| June | 36°C | 21°C | 28.2°C | 42 mm |
| July | 36°C | 22°C | 28.7°C | 49 mm |
| August | 35°C | 21°C | 28.1°C | 49 mm |
| September | 31°C | 17°C | 24.4°C | 54 mm |
| October | 27°C | 12°C | 19.1°C | 28 mm |
| November | 20°C | 5°C | 12.6°C | 19 mm |
| December | 16°C | 0°C | 8.1°C | 14 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Monahans's own co-op station Monahans station does: 1 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003047; 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 Monahans?
Normal highs sit between 65°F and 85°F in March, April, October and November. Of those, November 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 USW00003047.
When is the last frost in Monahans?
In Monahans, the last spring frost (32°F) comes after March 17 in half of years and after April 6 in one year in ten; the first autumn frost comes before November 12 in half of years and before October 30 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
- March 171 year in 10 after April 6; 9 in 10 after February 28
- First autumn frost, half of years before
- November 121 year in 10 before October 30; 9 in 10 before November 27
NOAA puts the median frost-free season at 238 days, and the season without a hard freeze (28°F) at 262 days.
A hard freeze (28°F) comes after March 3 in half of springs and before November 21 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Monahans in zone 8a in ZIP code 79788. By the map's own method, the average of each year's coldest night over 1991-2020, Monahans's NOAA station is in zone 8a: the coldest night of a typical year reaches 14°F (16 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 USW00003047; 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 Monahans?
In a normal year in Monahans, 125 days a year reach 90°F (36 of them 100°F or more), 52 nights fall to 32°F or colder and 50 days bring measurable precipitation.
- Days at 90°F or more
- 125a normal year
- Days at 100°F or more
- 36a normal year
- Nights at 32°F or colder
- 52a normal year
- Days that stay below freezing
- 2high of 32°F or less
- Days with 0.01 inch of precipitation
- 50a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USW00003047.
How sunny is Monahans?
Over a year 88% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Monahans, 5.6 kWh per square metre a day. June is the sunniest month (92%) and February the cloudiest (83%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 84% | 3.5 |
| February | 83% | 4.4 |
| March | 85% | 5.6 |
| April | 88% | 6.9 |
| May | 88% | 7.3 |
| June | 92% | 7.7 |
| July | 90% | 7.3 |
| August | 90% | 6.8 |
| September | 87% | 5.7 |
| October | 88% | 4.8 |
| November | 86% | 3.8 |
| December | 83% | 3.2 |
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 Monahans need?
A normal year in Monahans brings 2,290 heating degree days, 57% fewer than the median U.S. place (5,373), and 2,597 cooling degree days, 2.9 times the median (908). Four months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,306 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 581 | 0 |
| February | 413 | 3 |
| March | 233 | 35 |
| April | 69 | 122 |
| May | 15 | 313 |
| June | 0 | 535 |
| July | 0 | 580 |
| August | 0 | 545 |
| September | 5 | 333 |
| October | 78 | 121 |
| November | 324 | 10 |
| December | 572 | 0 |
| Year (annual) | 2,290 | 2,597 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003047. 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 Monahans been warmer than normal lately?
2025 averaged 67.7°F, 1.9°F above the 1991-2020 normal of 65.8°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.4°F | +0.6°F | 8.06 |
| 2022 | 66.1°F | +0.3°F | 13.33 |
| 2023 | 68.2°F | +2.4°F | 5.46 |
| 2024 | 68.7°F | +2.9°F | 9.27 |
| 2025 | 67.7°F | +1.9°F | 11.06 |
Source: observed years: ACIS, station USW00003047. A year counts only with all twelve months complete.
How does Monahans's climate compare?
Monahans is warmer than 164 of the other 320 places with their own NOAA record in Texas, and wetter than 14. Across the 7,247 U.S. stations with normals, its annual mean of 65.8°F is warmer than 90%.
In the Köppen classification computed from these normals, Monahans is BSh: hot 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.
Which places near Monahans 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.
- Southwest Sandhill, TX1,174 people · 7 mi SW
- Thorntonville, TX540 people · 7 mi SW
- Wickett, TX427 people · 12 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.
What do Monahans's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Monahans. This page uses Monahans (6 mi ENE); the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Monahans station USC00415999 | 8 mi SW | 2,547 ft | 64.3°F | 28°F | 98°F | 13.8 | 1 | April 3 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Monahans's climate
What is the coldest month in Monahans?
January, with a normal high of 60°F and a normal low of 32°F. The warmest is July (97°F by day, 71°F at night).
Does it snow in Monahans?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Monahans's NOAA station; Monahans's own co-op station Monahans station records 1 inches of snow in a normal year.
What is the rainiest month in Monahans?
September, with 2.12 in of precipitation in a normal year; the driest is February with 0.40 in.
What plant hardiness zone is Monahans in?
The USDA's 2023 map puts Monahans in zone 8a in ZIP code 79788. By the same method at Monahans's NOAA station, the coldest night of a typical year reaches 14°F (16 years, 1991-2020): zone 8a.
How late can frost come in Monahans?
In half of years the last 32°F night comes after March 17; in one year in ten it comes after April 6. Waiting until April 6 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Penwell, TX15 miles from this station, 66.3°F a year
- Grandfalls, TX22 miles from this station, 65.0°F a year
- Kermit, TX22 miles from this station, 64.0°F a year
- Winkler County Airport, TX25 miles from this station, 65.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made