Amistad, Texas climate: Normal weather by month, frost dates and records
Amistad's normal year runs from 40°F January nights to 97°F August afternoons, with 19.4 inches of precipitation and less than an inch of snow (0.1 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 20.8°C, January lows of 4°C, August highs of 36°C, 494 mm of precipitation a year.
- NOAA stationAmistad Dam
- Station IDUSC00410225
- Location29.46°N 101.03°W
- Elevation1,157 ft (353 m)
- Population (census place)60
On October 14, the normal high in Amistad is 83°F and the normal low 60°F, and the chance of measurable rain or snow is 19%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Amistad.
- Jan 63° 40°
- Feb 68° 43°
- Mar 76° 51°
- Apr 83° 58°
- May 89° 66°
- Jun 95° 72°
- Jul 97° 74°
- Aug 97° 74°
- Sep 90° 69°
- Oct 82° 60°
- Nov 71° 49°
- Dec 63° 41°
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 Amistad each month?
August is the warmest month, with normal highs of 97°F; January the coldest, with normal lows of 40°F. The most precipitation falls in September (3.18 in), the least in February (0.66 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 63°F | 40°F | 51.2°F | 0.67 | 6 | <1 | 5 | 10 h 30 min |
| February | 68°F | 43°F | 55.6°F | 0.66 | 5 | <1 | 2 | 11 h 10 min |
| March | 76°F | 51°F | 63.3°F | 1.45 | 6 | 2 | 1 | 12 h |
| April | 83°F | 58°F | 70.3°F | 1.27 | 5 | 8 | <1 | 12 h 50 min |
| May | 89°F | 66°F | 77.6°F | 2.61 | 7 | 18 | <1 | 13 h 40 min |
| June | 95°F | 72°F | 83.3°F | 1.83 | 5 | 26 | <1 | 14 h |
| July | 97°F | 74°F | 85.4°F | 1.85 | 4 | 29 | <1 | 13 h 50 min |
| August | 97°F | 74°F | 85.6°F | 2.50 | 4 | 29 | <1 | 13 h 10 min |
| September | 90°F | 69°F | 79.6°F | 3.18 | 6 | 20 | <1 | 12 h 20 min |
| October | 82°F | 60°F | 70.7°F | 1.68 | 6 | 6 | <1 | 11 h 30 min |
| November | 71°F | 49°F | 59.9°F | 1.04 | 5 | <1 | 1 | 10 h 40 min |
| December | 63°F | 41°F | 51.9°F | 0.69 | 6 | <1 | 3 | 10 h 20 min |
| Year (annual) | 81°F | 58°F | 69.5°F | 19.43 | 65 | 138 | 12 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 17°C | 4°C | 10.7°C | 17 mm |
| February | 20°C | 6°C | 13.1°C | 17 mm |
| March | 24°C | 11°C | 17.4°C | 37 mm |
| April | 28°C | 15°C | 21.3°C | 32 mm |
| May | 32°C | 19°C | 25.3°C | 66 mm |
| June | 35°C | 22°C | 28.5°C | 46 mm |
| July | 36°C | 23°C | 29.7°C | 47 mm |
| August | 36°C | 23°C | 29.8°C | 64 mm |
| September | 32°C | 20°C | 26.4°C | 81 mm |
| October | 28°C | 15°C | 21.5°C | 43 mm |
| November | 22°C | 9°C | 15.5°C | 26 mm |
| December | 17°C | 5°C | 11.1°C | 18 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00410225; 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 Amistad?
Normal highs sit between 65°F and 85°F in February, March, April, October and November. Of those, April has the fewest days with rain (5).
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 USC00410225.
When is the last frost in Amistad?
In Amistad, the last spring frost (32°F) comes after February 14 in half of years and after March 9 in one year in ten; the first autumn frost comes before December 6 in half of years and before November 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
- February 141 year in 10 after March 9; 9 in 10 after January 15
- First autumn frost, half of years before
- December 61 year in 10 before November 16; 9 in 10 before January 1
NOAA puts the median frost-free season at 297 days, and the season without a hard freeze (28°F) at 335 days.
A hard freeze (28°F) comes after January 26 in half of springs and before December 22 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Amistad in zone 9a in ZIP code 78842, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Amistad's NOAA station is in zone 9b: the coldest night of a typical year reaches 25°F (16 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 USC00410225; 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 Amistad?
In a normal year in Amistad, 138 days a year reach 90°F (42 of them 100°F or more), 12 nights fall to 32°F or colder and 65 days bring measurable precipitation.
- Days at 90°F or more
- 138a normal year
- Days at 100°F or more
- 42a normal year
- Nights at 32°F or colder
- 12a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 65a normal year
The highest temperature in this station's record (since 1964) is 114°F, on July 30, 1995; the lowest is 9°F, on December 23, 1989.
The wettest calendar year on that record is 2016, with 31.66 in; the snowiest season is 2020–21, with 13.4 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00410225; records: ACIS (NOAA Regional Climate Centers), station USC00410225. Records use complete months only; a month missing more than three days is left out.
How sunny is Amistad?
Over a year 84% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Amistad, 5.3 kWh per square metre a day. August is the sunniest month (90%) and January the cloudiest (79%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 79% | 3.5 |
| February | 80% | 4.3 |
| March | 82% | 5.4 |
| April | 83% | 6.3 |
| May | 82% | 6.5 |
| June | 89% | 7.1 |
| July | 89% | 7.0 |
| August | 90% | 6.6 |
| September | 85% | 5.5 |
| October | 85% | 4.6 |
| November | 83% | 3.7 |
| December | 80% | 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 Amistad need?
A normal year in Amistad brings 1,493 heating degree days, 72% fewer than the median U.S. place (5,373), and 3,176 cooling degree days, 3.5 times the median (908). Two months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 7,369 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 429 | 2 |
| February | 275 | 12 |
| March | 126 | 73 |
| April | 29 | 189 |
| May | 3 | 392 |
| June | 0 | 549 |
| July | 0 | 632 |
| August | 0 | 640 |
| September | 2 | 440 |
| October | 33 | 211 |
| November | 189 | 35 |
| December | 408 | 2 |
| Year (annual) | 1,493 | 3,176 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00410225. 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 Amistad been warmer than normal lately?
2025 averaged 72.6°F, 3.1°F above the 1991-2020 normal of 69.5°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 69.8°F | +0.3°F | 15.98 |
| 2022 | 70.4°F | +0.9°F | 13.16 |
| 2025 | 72.6°F | +3.1°F | 9.56 |
Over 42 complete years from 1965 to 2024, the station's annual mean temperature rose at a fitted 5.9°F per century (+0.33°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00410225; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Amistad's climate compare?
Amistad is warmer than 251 of the other 320 places with their own NOAA record in Texas, and wetter than 48. Across the 7,247 U.S. stations with normals, its annual mean of 69.5°F is warmer than 95%.
In the Köppen classification computed from these normals, Amistad 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 Amistad share this climate record?
2 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.
- Lake View, TX302 people · 5 mi E
- Box Canyon, TX46 people · 9 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 Amistad's climate
What is the coldest month in Amistad?
January, with a normal high of 63°F and a normal low of 40°F. The warmest is August (97°F by day, 74°F at night).
Does it snow in Amistad?
Rarely: NOAA's normal is 0.1 inch a year.
What is the rainiest month in Amistad?
September, with 3.18 in of precipitation in a normal year; the driest is February with 0.66 in.
What plant hardiness zone is Amistad in?
The USDA's 2023 map puts Amistad in zone 9a in ZIP code 78842, the nearest ZIP area. By the same method at Amistad's NOAA station, the coldest night of a typical year reaches 25°F (16 years, 1991-2020): zone 9b.
How late can frost come in Amistad?
In half of years the last 32°F night comes after February 14; in one year in ten it comes after March 9. Waiting until March 9 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Del Rio, TX8 miles from this station, 73.9°F a year
- Carta Valley, TX31 miles from this station, 67.1°F a year
- Brackettville, TX39 miles from this station, 69.0°F a year
- Hudspeth River Ranch, TX39 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