Carta Valley, Texas climate: Climate normals at a NOAA weather station
Carta Valley's normal year runs from 38°F December nights to 94°F July afternoons, with 27.1 inches of precipitation and less than an inch of snow (0.3 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 19.5°C, December lows of 3°C, July highs of 34°C, 687 mm of precipitation a year.
- NOAA stationCarta Valley
- Station IDUSC00411492
- Location29.79°N 100.67°W
- Elevation1,851 ft (564 m)
On October 23, the normal high in Carta Valley is 78°F and the normal low 55°F, and the chance of measurable rain or snow is 8%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Carta Valley.
- Jan 61° 36°
- Feb 65° 39°
- Mar 72° 48°
- Apr 81° 56°
- May 87° 65°
- Jun 92° 72°
- Jul 94° 74°
- Aug 94° 73°
- Sep 88° 68°
- Oct 80° 58°
- Nov 69° 45°
- Dec 57° 38°
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 Carta Valley each month?
July is the warmest month, with normal highs of 94°F; December the coldest, with normal lows of 38°F. The most precipitation falls in August (5.09 in), the least in December (0.70 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 61°F | 36°F | 48.3°F | 1.06 | 2 | <1 | 12 | 10 h 30 min |
| February | 65°F | 39°F | 51.7°F | 0.75 | 2 | <1 | 8 | 11 h 10 min |
| March | 72°F | 48°F | 60.3°F | 2.10 | 3 | <1 | 2 | 12 h |
| April | 81°F | 56°F | 68.6°F | 1.60 | 3 | 7 | <1 | 12 h 50 min |
| May | 87°F | 65°F | 75.8°F | 4.19 | 3 | 13 | <1 | 13 h 40 min |
| June | 92°F | 72°F | 81.9°F | 2.42 | 3 | 23 | <1 | 14 h |
| July | 94°F | 74°F | 83.8°F | 1.65 | 3 | 25 | <1 | 13 h 50 min |
| August | 94°F | 73°F | 83.3°F | 5.09 | 4 | 27 | <1 | 13 h 20 min |
| September | 88°F | 68°F | 77.9°F | 3.52 | 4 | 16 | <1 | 12 h 20 min |
| October | 80°F | 58°F | 68.7°F | 2.30 | 3 | 3 | 1 | 11 h 30 min |
| November | 69°F | 45°F | 57.1°F | 1.67 | 2 | <1 | 4 | 10 h 40 min |
| December | 57°F | 38°F | 47.4°F | 0.70 | 2 | <1 | 11 | 10 h 10 min |
| Year (annual) | 78°F | 56°F | 67.1°F | 27.05 | 32 | 113 | 38 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 16°C | 2°C | 9.1°C | 27 mm |
| February | 18°C | 4°C | 10.9°C | 19 mm |
| March | 22°C | 9°C | 15.7°C | 53 mm |
| April | 27°C | 13°C | 20.3°C | 41 mm |
| May | 30°C | 18°C | 24.3°C | 106 mm |
| June | 33°C | 22°C | 27.7°C | 61 mm |
| July | 34°C | 23°C | 28.8°C | 42 mm |
| August | 34°C | 23°C | 28.5°C | 129 mm |
| September | 31°C | 20°C | 25.5°C | 89 mm |
| October | 26°C | 14°C | 20.4°C | 58 mm |
| November | 21°C | 7°C | 13.9°C | 42 mm |
| December | 14°C | 3°C | 8.6°C | 18 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00411492; 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 Carta Valley?
Normal highs sit between 65°F and 85°F in March, April, October and November. Of those, November has the fewest days with rain (2).
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 USC00411492.
When is the last frost at Carta Valley?
In Carta Valley, the last spring frost (32°F) comes after March 4 in half of years and after March 31 in one year in ten; the first autumn frost comes before November 20 in half of years and before November 2 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 41 year in 10 after March 31; 9 in 10 after February 14
- First autumn frost, half of years before
- November 201 year in 10 before November 2; 9 in 10 before December 10
NOAA puts the median frost-free season at 258 days, and the season without a hard freeze (28°F) at 282 days.
A hard freeze (28°F) comes after February 20 in half of springs and before December 2 in half of autumns.
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00411492. 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 Carta Valley?
In a normal year in Carta Valley, 113 days a year reach 90°F (12 of them 100°F or more), 38 nights fall to 32°F or colder and 32 days bring measurable precipitation.
- Days at 90°F or more
- 113a normal year
- Days at 100°F or more
- 12a normal year
- Nights at 32°F or colder
- 38a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 32a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00411492.
How sunny is it at Carta Valley?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds at Carta Valley, 5.0 kWh per square metre a day. August is the sunniest month (89%) and February the cloudiest (75%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 3.3 |
| February | 75% | 4.0 |
| March | 75% | 4.8 |
| April | 77% | 5.7 |
| May | 76% | 5.9 |
| June | 85% | 6.8 |
| July | 87% | 6.8 |
| August | 89% | 6.5 |
| September | 82% | 5.3 |
| October | 81% | 4.4 |
| November | 77% | 3.4 |
| December | 76% | 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 many heating and cooling degree days does Carta Valley record?
A normal year at Carta Valley brings 2,010 heating degree days, 63% fewer than the median U.S. place (5,373), and 2,790 cooling degree days, 3.1 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,660 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 517 | 1 |
| February | 375 | 3 |
| March | 190 | 44 |
| April | 52 | 158 |
| May | 5 | 338 |
| June | 0 | 507 |
| July | 0 | 583 |
| August | 0 | 567 |
| September | 3 | 392 |
| October | 56 | 171 |
| November | 265 | 26 |
| December | 548 | 1 |
| Year (annual) | 2,010 | 2,790 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00411492. 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 Carta Valley's climate compare?
Carta Valley is warmer than 206 of the 321 places with their own NOAA record in Texas, and wetter than 130. Across the 7,247 U.S. stations with normals, its annual mean of 67.1°F is warmer than 92%.
In the Köppen classification computed from these normals, Carta Valley 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.
Questions about Carta Valley's climate
What is the coldest month at Carta Valley?
December, with a normal high of 57°F and a normal low of 38°F. The warmest is July (94°F by day, 74°F at night).
Does it snow at Carta Valley?
Rarely: NOAA's normal is 0.3 inch a year.
What is the rainiest month at Carta Valley?
August, with 5.09 in of precipitation in a normal year; the driest is December with 0.70 in.
How late can frost come at Carta Valley?
In half of years the last 32°F night comes after March 4; in one year in ten it comes after March 31. Waiting until March 31 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Amistad, TX31 miles from this station, 69.5°F a year
- Rocksprings, TX32 miles from this station, 65.0°F a year
- Del Rio, TX32 miles from this station, 73.9°F a year
- Hudspeth River Ranch, TX34 miles from this station, 67.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made