Falcon Dam, Texas climate: Climate normals at a NOAA weather station
Falcon Dam's normal year runs from 49°F January nights to 103°F August afternoons, with 19.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 24.8°C, January lows of 9°C, August highs of 39°C, 495 mm of precipitation a year.
- NOAA stationFalcon Dam
- Station IDUSC00413060
- Location26.56°N 99.14°W
- Elevation320 ft (98 m)
On October 23, the normal high in Falcon Dam is 89°F and the normal low 64°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 Falcon Dam.
- Jan 72° 49°
- Feb 77° 53°
- Mar 84° 59°
- Apr 91° 65°
- May 97° 72°
- Jun 101° 76°
- Jul 102° 77°
- Aug 103° 77°
- Sep 96° 73°
- Oct 90° 66°
- Nov 80° 58°
- Dec 72° 50°
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 Falcon Dam each month?
August is the warmest month, with normal highs of 103°F; January the coldest, with normal lows of 49°F. The most precipitation falls in September (4.87 in), the least in February (0.64 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 72°F | 49°F | 60.1°F | 0.74 | 5 | 1 | 1 | 10 h 40 min |
| February | 77°F | 53°F | 64.9°F | 0.64 | 4 | 3 | 1 | 11 h 10 min |
| March | 84°F | 59°F | 71.5°F | 0.78 | 4 | 9 | <1 | 12 h |
| April | 91°F | 65°F | 77.8°F | 1.24 | 3 | 18 | <1 | 12 h 50 min |
| May | 97°F | 72°F | 84.1°F | 1.98 | 4 | 26 | <1 | 13 h 30 min |
| June | 101°F | 76°F | 88.5°F | 1.94 | 4 | 29 | <1 | 13 h 50 min |
| July | 102°F | 77°F | 89.4°F | 1.99 | 4 | 30 | <1 | 13 h 40 min |
| August | 103°F | 77°F | 89.6°F | 1.63 | 4 | 30 | <1 | 13 h 10 min |
| September | 96°F | 73°F | 84.6°F | 4.87 | 7 | 25 | <1 | 12 h 20 min |
| October | 90°F | 66°F | 78.0°F | 1.38 | 4 | 18 | <1 | 11 h 30 min |
| November | 80°F | 58°F | 69.0°F | 1.31 | 4 | 5 | <1 | 10 h 50 min |
| December | 72°F | 50°F | 61.2°F | 1.00 | 6 | 1 | 1 | 10 h 30 min |
| Year (annual) | 89°F | 64°F | 76.6°F | 19.50 | 54 | 195 | 2 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 22°C | 9°C | 15.6°C | 19 mm |
| February | 25°C | 12°C | 18.3°C | 16 mm |
| March | 29°C | 15°C | 21.9°C | 20 mm |
| April | 33°C | 18°C | 25.4°C | 31 mm |
| May | 36°C | 22°C | 28.9°C | 50 mm |
| June | 38°C | 24°C | 31.4°C | 49 mm |
| July | 39°C | 25°C | 31.9°C | 51 mm |
| August | 39°C | 25°C | 32.0°C | 41 mm |
| September | 35°C | 23°C | 29.2°C | 124 mm |
| October | 32°C | 19°C | 25.6°C | 35 mm |
| November | 27°C | 14°C | 20.6°C | 33 mm |
| December | 22°C | 10°C | 16.2°C | 25 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00413060; 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 Falcon Dam?
Normal highs sit between 65°F and 85°F in January, February, March, November and December. Of those, March 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 USC00413060.
When is the last frost at Falcon Dam?
In Falcon Dam, the last spring frost (32°F) comes after January 9 in half of years and after February 21 in one year in ten; the first autumn frost comes before January 1 in half of years and before December 8 in one year in ten. A night at 32°F or colder comes at all in 55% of years here (NOAA).
- Last spring frost, half of years after
- January 91 year in 10 after February 21; 9 in 10 after December 17
- First autumn frost, half of years before
- January 11 year in 10 before December 8; 9 in 10 before February 4
NOAA puts the median frost-free season at 363 days, and the season without a hard freeze (28°F) at 365 days.
A hard freeze (28°F) comes after January 3 in half of springs and before January 2 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Falcon Dam in zone 9b in ZIP code 78545, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 9b: the coldest night of a typical year reaches 30°F (24 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 USC00413060; 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 at Falcon Dam?
In a normal year in Falcon Dam, 195 days a year reach 90°F (85 of them 100°F or more), 2 nights fall to 32°F or colder and 54 days bring measurable precipitation.
- Days at 90°F or more
- 195a normal year
- Days at 100°F or more
- 85a normal year
- Nights at 32°F or colder
- 2a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 54a normal year
The highest temperature in this station's record (since 1962) is 116°F, on June 16, 1998; the lowest is 15°F, on December 26, 1983.
The wettest calendar year on that record is 2008, with 32.99 in; the snowiest season is 1966–67, with 4.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00413060; records: ACIS (NOAA Regional Climate Centers), station USC00413060. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Falcon Dam?
Over a year 83% of the sunlight that would reach the ground under clear skies gets through the clouds at Falcon Dam, 5.2 kWh per square metre a day. August is the sunniest month (92%) and January the cloudiest (73%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 73% | 3.3 |
| February | 76% | 4.1 |
| March | 77% | 5.0 |
| April | 79% | 5.7 |
| May | 82% | 6.1 |
| June | 89% | 7.0 |
| July | 89% | 6.9 |
| August | 92% | 6.7 |
| September | 83% | 5.4 |
| October | 84% | 4.8 |
| November | 80% | 3.7 |
| December | 75% | 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 many heating and cooling degree days does Falcon Dam record?
A normal year at Falcon Dam brings 608 heating degree days, 89% fewer than the median U.S. place (5,373), and 4,846 cooling degree days, 5.3 times the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 9,758 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 202 | 51 |
| February | 104 | 101 |
| March | 41 | 243 |
| April | 7 | 391 |
| May | 0 | 591 |
| June | 0 | 705 |
| July | 0 | 756 |
| August | 0 | 764 |
| September | 0 | 588 |
| October | 8 | 409 |
| November | 63 | 183 |
| December | 182 | 65 |
| Year (annual) | 608 | 4,846 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00413060. 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.
Have recent years at Falcon Dam been warmer than normal?
Over 39 complete years from 1963 to 2015, the station's annual mean temperature rose at a fitted 6.4°F per century (+0.36°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Falcon Dam's climate compare?
Falcon Dam is warmer than 320 of the 321 places with their own NOAA record in Texas, and wetter than 51. Across the 7,247 U.S. stations with normals, its annual mean of 76.6°F is warmer than 100%.
In the Köppen classification computed from these normals, Falcon Dam 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 Falcon Dam share this climate record?
23 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.
- Fronton, TX328 people · 10 mi S
- La Minita, TX231 people · 6 mi SE
- Evergreen, TX130 people · 12 mi SE
- Salineño, TX122 people · 3 mi SE
- Guadalupe Guerra, TX99 people · 11 mi S
- Salineño North, TX89 people · 3 mi SE
- Fronton Ranchettes, TX88 people · 11 mi SE
- Chapeno, TX84 people · 1 mi S
- Sunset, TX62 people · 10 mi SE
- La Loma de Falcon, TX60 people · 3 mi SE
- Lopeño, TX51 people · 11 mi N
- Lago Vista, TX45 people · 2 mi E
- Ramos, TX35 people · 11 mi SE
- Falcon Heights, TX0 people · 1 mi E
- Falcon Village, TX0 people · 0 mi N
- Falconaire, TX0 people · 1 mi E
- H. Cuellar Estates, TX0 people · 1 mi E
- Indio, TX0 people · 3 mi E
- Jardin de San Julian, TX0 people · 3 mi SE
- Los Arrieros, TX0 people · 4 mi SE
- Los Lobos, TX0 people · 4 mi NW
- New Falcon, TX0 people · 6 mi NE
- Sandoval, TX0 people · 10 mi S
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 Falcon Dam's climate
What is the coldest month at Falcon Dam?
January, with a normal high of 72°F and a normal low of 49°F. The warmest is August (103°F by day, 77°F at night).
Does it snow at Falcon Dam?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month at Falcon Dam?
September, with 4.87 in of precipitation in a normal year; the driest is February with 0.64 in.
What plant hardiness zone is Falcon Dam in?
The USDA's 2023 map puts Falcon Dam in zone 9b in ZIP code 78545, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 30°F (24 years, 1991-2020): zone 9b.
How late can frost come at Falcon Dam?
In half of years the last 32°F night comes after January 9; in one year in ten it comes after February 21. Waiting until February 21 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Zapata, TX23 miles from this station, 74.4°F a year
- Rio Grande City, TX24 miles from this station, 74.4°F a year
- La Joya, TX53 miles from this station, 73.4°F a year
- Hebbronville, TX60 miles from this station, 73.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made