San Antonio Kelly, TX Climate: Temperature by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from San Antonio Kelly's primary NOAA station, SAN ANTONIO KELLY AFB.
The climate verdict for San Antonio Kelly
Warm-season cooling demand defines San Antonio Kelly, Texas, running at more than twice its heating total. The NOAA normal records an annual average of 70°F. August is the warmest month at 86°F and January the coldest at 53°F.
- 70°F
- average temperature, NOAA 1991-2020 normal
- 283 days
- frost-free growing season
San Antonio Kelly: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00012909 · San Antonio Kelly, TX 70°F mean
TEMP-HOT · RANK-WARM · PHOTO-FINISH · PRCP-UNK · SWING-MID · COMF-UNK · LOAD-COOL · STN-1 · BOOK-PART
- TEMP-HOT 70°F
- RANK-WARM #6,518
- PHOTO-FINISH ≈ Chalmette
- PRCP-UNK Rain n/a
- SWING-MID 33°F
- COMF-UNK Comfort n/a
- LOAD-COOL 3,155 CDD
- STN-1 USW00012909
- BOOK-PART 4/6 fields
Nearest mean-temperature peer: Chalmette, LA ( -0.1 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every TX station list.
- San Antonio Kel… (this station) 70°F
- Cold Houston Hooks M…, TX 70°F
- Hot Karnes City, TX 70°F
- Near Chalmette, LA 70°F
- Near Danevang, TX 70°F
San Antonio Kelly sits in Texas, the #4 hottest U.S. state at 66.2°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Climate Living Index · San Antonio Kelly
San Antonio Kelly: 67/100 · grade C
San Antonio Kelly publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals); 2 missing weights rescale to 100.
PlainClimate-derived for San Antonio Kelly, not an official NOAA rating. Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 283 days/year | 98/100 · A |
| Annual temperature balance | 70.0°F · 2.5° from 67.5°F | 92/100 · A |
| Normal heat + freeze calendar | 127 calendar days | 60/100 · C |
| Summer moisture balance | 69.8°F mean dew point | 14/100 · F |
San Antonio Kelly · 2026-08-04 · NOAA NCEI Climate Normals · method .
National standing · cooling-led station
Where San Antonio Kelly sits across the climate record
Available NOAA 1991–2020 fields for San Antonio Kelly are ranked only against stations that publish the same field, missing metrics stay blank rather than estimated.
- Annual temperature
- Top 5% warmest
- Among 6,861 stations, San Antonio Kelly sits in the warmer third of annual means.
- Seasonal temperature swing
- Narrower than 86%
- Warmest-to-coldest month gap for San Antonio Kelly is compact versus 6,861 complete station-years.
San Antonio Kelly's measured station temperature trend
MethodologyAcross 53 complete annual observations from 1949 to 2025, SAN ANTONIO KELLY AFB warmed at a fitted rate of 0.19°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- San Antonio Kelly primary station fitted change +0.19 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 64°F (18°C) | 41°F (5°C) | 53°F (11°C) | N/A | 3.7 | 0.0 |
| February | 70°F (21°C) | 44°F (7°C) | 57°F (14°C) | N/A | 2.2 | 0.0 |
| March | 75°F (24°C) | 52°F (11°C) | 64°F (18°C) | N/A | 1.1 | 1.6 |
| April | 82°F (28°C) | 59°F (15°C) | 70°F (21°C) | N/A | 0.0 | 5.7 |
| May | 89°F (31°C) | 66°F (19°C) | 78°F (25°C) | N/A | 0.0 | 14.2 |
| June | 93°F (34°C) | 72°F (22°C) | 82°F (28°C) | N/A | 0.0 | 23.5 |
| July | 96°F (36°C) | 74°F (23°C) | 85°F (29°C) | N/A | 0.0 | 31.0 |
| August | 97°F (36°C) | 74°F (23°C) | 86°F (30°C) | N/A | 0.0 | 30.5 |
| September | 92°F (33°C) | 70°F (21°C) | 81°F (27°C) | N/A | 0.0 | 22.5 |
| October | 84°F (29°C) | 60°F (16°C) | 72°F (22°C) | N/A | 0.0 | 11.7 |
| November | 72°F (22°C) | 49°F (9°C) | 60°F (16°C) | N/A | 2.5 | 0.0 |
| December | 65°F (18°C) | 41°F (5°C) | 53°F (12°C) | N/A | 4.6 | 0.0 |
The year, day by day
The year in San Antonio Kelly runs from a mild 40°F around December 27 to 98°F at the peak near August 4, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from May 23 through September 26, covering 127 dates. The broader mild season, normal highs of 70°F or more, runs February 16 to November 20.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 40°F around December 27.
The widest day
February 22 carries the biggest normal gap between afternoon and dawn, 26°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for San Antonio Kelly.
Where San Antonio Kelly Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 127 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
San Antonio Kelly earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
Frost Dates & Growing Season
First Fall Freeze
December 2
50% probability date
Last Spring Freeze
February 22
50% probability date
Growing Season
283 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,312
Higher = more heating needed
Cooling Degree Days
3,155
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 64% | 7.3 | 34% | 30% |
| February | 63% | 8.2 | 34% | 28% |
| March | 67% | 8.8 | 28% | 30% |
| April | 66% | 9.3 | 31% | 25% |
| May | 70% | 8.5 | 23% | 12% |
| June | 68% | 8.3 | 27% | 7% |
| July | 63% | 7.5 | 33% | 4% |
| August | 64% | 6.8 | 31% | 6% |
| September | 65% | 6.7 | 38% | 6% |
| October | 67% | 7.2 | 38% | 17% |
| November | 67% | 6.8 | 38% | 22% |
| December | 65% | 7.0 | 38% | 26% |
Nationwide similar cities
Other rankable U.S. places outside TX closest to San Antonio Kelly on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (70°F here).
- Fernandina Beach, FL 70°F · 0.0°F off
- Chalmette, LA 70°F · 0.1°F off
- Lisbon, FL 70°F · 0.1°F off
- Morgan City, LA 70°F · 0.1°F off
Data-derived climate profile
How San Antonio Kelly's climate pattern fits together
cooling led · mid swing
Air-conditioning demand is the clearest thermal signal here. San Antonio Kelly accumulates 3,155 cooling degree days, more than twice its 1,312 heating total; the monthly table shows when that imbalance builds rather than treating it as a year-round condition.
A moisture-range label is withheld because San Antonio Kelly's annual precipitation total is unavailable. Monthly source values remain visible where NOAA provides them, and no annual amount is reconstructed from incomplete data.
August and January mark the typical warm and cold ends of the calendar in San Antonio Kelly's middle-range seasonal profile. The measured spread is 32.9°F. The annual average is 70°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
The frost-free window extends for about 283 days. That is a long calendar measure, but it is not a forecast and does not combine heat, rainfall, soil, or local elevation into a planting recommendation.
These labels group NOAA 1991-2020 normals from San Antonio Kelly's primary station, so the summer figures are a thirty-year average rather than a ceiling: individual years have run hotter and will again. For San Antonio Kelly that means a descriptive range only — not an official NOAA classification and not a prediction for next summer.
Questions about San Antonio Kelly's climate
How many days above 90°F does San Antonio Kelly get? ▼
How much energy does heating and cooling require in San Antonio Kelly? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from San Antonio Kelly's primary station: SAN ANTONIO KELLY AFB (USW00012909). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for San Antonio Kelly; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for San Antonio Kelly comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.