San Antonio Incarnate Word, Texas climate: Climate normals at a NOAA weather station
San Antonio Incarnate Word's normal year runs from 40°F January nights to 95°F August afternoons, with 34.0 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 20.6°C, January lows of 5°C, August highs of 35°C, 863 mm of precipitation a year.
- NOAA stationSan Antonio Incarnate Word
- Station IDUSC00417947
- Location29.47°N 98.47°W
- Elevation700 ft (213 m)
On October 23, the normal high in San Antonio Incarnate Word is 80°F and the normal low 57°F, and the chance of measurable rain or snow is 26%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for San Antonio Incarnate Word.
- Jan 63° 40°
- Feb 68° 44°
- Mar 74° 51°
- Apr 80° 57°
- May 86° 66°
- Jun 92° 72°
- Jul 94° 74°
- Aug 95° 74°
- Sep 90° 69°
- Oct 82° 59°
- Nov 71° 49°
- Dec 64° 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 at San Antonio Incarnate Word each month?
August is the warmest month, with normal highs of 95°F; January the coldest, with normal lows of 40°F. The most precipitation falls in May (4.38 in), the least in February (1.87 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 63°F | 40°F | 51.7°F | 2.21 | 8 | <1 | 7 | 10 h 30 min |
| February | 68°F | 44°F | 55.6°F | 1.87 | 10 | <1 | 4 | 11 h 10 min |
| March | 74°F | 51°F | 62.4°F | 2.38 | 9 | 1 | 1 | 12 h |
| April | 80°F | 57°F | 68.7°F | 2.32 | 6 | 2 | <1 | 12 h 50 min |
| May | 86°F | 66°F | 75.7°F | 4.38 | 8 | 11 | <1 | 13 h 40 min |
| June | 92°F | 72°F | 81.9°F | 3.55 | 7 | 23 | <1 | 14 h |
| July | 94°F | 74°F | 84.1°F | 2.41 | 7 | 26 | <1 | 13 h 50 min |
| August | 95°F | 74°F | 84.7°F | 2.43 | 4 | 28 | <1 | 13 h 10 min |
| September | 90°F | 69°F | 79.2°F | 3.90 | 8 | 17 | <1 | 12 h 20 min |
| October | 82°F | 59°F | 70.5°F | 3.93 | 8 | 4 | <1 | 11 h 30 min |
| November | 71°F | 49°F | 60.2°F | 2.48 | 7 | <1 | 2 | 10 h 40 min |
| December | 64°F | 41°F | 52.8°F | 2.11 | 8 | <1 | 8 | 10 h 20 min |
| Year (annual) | 80°F | 58°F | 69.0°F | 33.97 | 89 | 112 | 22 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 17°C | 5°C | 10.9°C | 56 mm |
| February | 20°C | 7°C | 13.1°C | 47 mm |
| March | 23°C | 11°C | 16.9°C | 60 mm |
| April | 27°C | 14°C | 20.4°C | 59 mm |
| May | 30°C | 19°C | 24.3°C | 111 mm |
| June | 33°C | 22°C | 27.7°C | 90 mm |
| July | 34°C | 23°C | 28.9°C | 61 mm |
| August | 35°C | 23°C | 29.3°C | 62 mm |
| September | 32°C | 20°C | 26.2°C | 99 mm |
| October | 28°C | 15°C | 21.4°C | 100 mm |
| November | 22°C | 9°C | 15.7°C | 63 mm |
| December | 18°C | 5°C | 11.6°C | 54 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00417947; 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 San Antonio Incarnate Word?
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 (6).
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 USC00417947.
When is the last frost at San Antonio Incarnate Word?
In San Antonio Incarnate Word, the last spring frost (32°F) comes after February 25 in half of years and after March 19 in one year in ten; the first autumn frost comes before November 28 in half of years and before November 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
- February 251 year in 10 after March 19; 9 in 10 after January 28
- First autumn frost, half of years before
- November 281 year in 10 before November 7; 9 in 10 before December 21
NOAA puts the median frost-free season at 277 days, and the season without a hard freeze (28°F) at 315 days.
A hard freeze (28°F) comes after February 5 in half of springs and before December 15 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts San Antonio Incarnate Word in zone 9a in ZIP code 78212, 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 9a: the coldest night of a typical year reaches 23°F (18 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 USC00417947; 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 San Antonio Incarnate Word?
In a normal year in San Antonio Incarnate Word, 112 days a year reach 90°F (13 of them 100°F or more), 22 nights fall to 32°F or colder and 89 days bring measurable precipitation.
- Days at 90°F or more
- 112a normal year
- Days at 100°F or more
- 13a normal year
- Nights at 32°F or colder
- 22a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 89a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00417947.
How sunny is it at San Antonio Incarnate Word?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds at San Antonio Incarnate Word, 4.8 kWh per square metre a day. August is the sunniest month (88%) and February the cloudiest (69%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 72% | 3.1 |
| February | 69% | 3.6 |
| March | 71% | 4.5 |
| April | 74% | 5.4 |
| May | 76% | 5.8 |
| June | 84% | 6.7 |
| July | 86% | 6.7 |
| August | 88% | 6.4 |
| September | 81% | 5.2 |
| October | 81% | 4.4 |
| November | 76% | 3.3 |
| December | 72% | 2.8 |
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 San Antonio Incarnate Word record?
A normal year at San Antonio Incarnate Word brings 1,527 heating degree days, 72% fewer than the median U.S. place (5,373), and 2,995 cooling degree days, 3.3 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 7,164 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 420 | 8 |
| February | 282 | 20 |
| March | 150 | 70 |
| April | 44 | 156 |
| May | 5 | 336 |
| June | 0 | 505 |
| July | 0 | 591 |
| August | 0 | 611 |
| September | 1 | 425 |
| October | 39 | 208 |
| November | 196 | 52 |
| December | 390 | 12 |
| Year (annual) | 1,527 | 2,995 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00417947. 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 San Antonio Incarnate Word been warmer than normal?
Over 51 complete years from 1961 to 2018, the station's annual mean temperature rose at a fitted 7.4°F per century (+0.41°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 San Antonio Incarnate Word's climate compare?
San Antonio Incarnate Word is warmer than 241 of the 321 places with their own NOAA record in Texas, and wetter than 178. Across the 7,247 U.S. stations with normals, its annual mean of 69.0°F is warmer than 94%.
In the Köppen classification computed from these normals, San Antonio Incarnate Word 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.
Which places near San Antonio Incarnate Word share this climate record?
7 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.
- Kirby, TX8,104 people · 5 mi E
- Alamo Heights, TX7,557 people · 1 mi N
- Windcrest, TX5,782 people · 6 mi NE
- Terrell Hills, TX5,142 people · 2 mi E
- Balcones Heights, TX2,707 people · 5 mi W
- Olmos Park, TX2,155 people · 1 mi W
- China Grove, TX1,138 people · 9 mi SE
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 San Antonio Incarnate Word's climate
What is the coldest month at San Antonio Incarnate Word?
January, with a normal high of 63°F and a normal low of 40°F. The warmest is August (95°F by day, 74°F at night).
Does it snow at San Antonio Incarnate Word?
Rarely: NOAA's normal is 0.1 inch a year.
What is the rainiest month at San Antonio Incarnate Word?
May, with 4.38 in of precipitation in a normal year; the driest is February with 1.87 in.
What plant hardiness zone is San Antonio Incarnate Word in?
The USDA's 2023 map puts San Antonio Incarnate Word in zone 9a in ZIP code 78212, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 23°F (18 years, 1991-2020): zone 9a.
How late can frost come at San Antonio Incarnate Word?
In half of years the last 32°F night comes after February 25; in one year in ten it comes after March 19. Waiting until March 19 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- San Antonio, TX5 miles from this station, 69.6°F a year
- San Antonio Kelly Air Force Base, TX9 miles from this station, 70.0°F a year
- Randolph AFB, TX13 miles from this station, 69.3°F a year
- San Antonio/Seaworld, TX14 miles from this station, 71.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made