Boerne, Texas climate: Normal weather by month, frost dates and records
Boerne's normal year runs from 37°F January nights to 94°F August afternoons, with 37.5 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 19.2°C, January lows of 3°C, August highs of 35°C, 953 mm of precipitation a year.
- NOAA stationBoerne
- Station IDUSC00410902
- Location29.80°N 98.74°W
- Elevation1,445 ft (440 m)
- Population22,712
On October 23, the normal high in Boerne is 78°F and the normal low 53°F, and the chance of measurable rain or snow is 22%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Boerne.
- Jan 62° 37°
- Feb 66° 41°
- Mar 72° 47°
- Apr 79° 54°
- May 84° 63°
- Jun 90° 69°
- Jul 93° 71°
- Aug 94° 71°
- Sep 89° 65°
- Oct 81° 56°
- Nov 70° 45°
- Dec 63° 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 in Boerne each month?
August is the warmest month, with normal highs of 94°F; January the coldest, with normal lows of 37°F. The most precipitation falls in May (5.28 in), the least in February (2.22 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 62°F | 37°F | 49.0°F | 2.28 | 7 | <1 | 13 | 10 h 30 min |
| February | 66°F | 41°F | 53.0°F | 2.22 | 7 | <1 | 8 | 11 h 10 min |
| March | 72°F | 47°F | 59.6°F | 2.79 | 8 | 1 | 3 | 12 h |
| April | 79°F | 54°F | 66.3°F | 2.52 | 6 | 2 | <1 | 12 h 50 min |
| May | 84°F | 63°F | 73.3°F | 5.28 | 8 | 6 | <1 | 13 h 40 min |
| June | 90°F | 69°F | 79.4°F | 3.78 | 7 | 17 | <1 | 14 h |
| July | 93°F | 71°F | 81.8°F | 2.83 | 5 | 24 | <1 | 13 h 50 min |
| August | 94°F | 71°F | 82.3°F | 2.80 | 5 | 27 | <1 | 13 h 20 min |
| September | 89°F | 65°F | 76.8°F | 3.90 | 7 | 15 | <1 | 12 h 20 min |
| October | 81°F | 56°F | 68.0°F | 3.88 | 7 | 3 | <1 | 11 h 30 min |
| November | 70°F | 45°F | 57.7°F | 2.92 | 7 | <1 | 4 | 10 h 40 min |
| December | 63°F | 38°F | 50.3°F | 2.32 | 7 | <1 | 11 | 10 h 10 min |
| Year (annual) | 78°F | 55°F | 66.5°F | 37.52 | 79 | 95 | 40 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 16°C | 3°C | 9.4°C | 58 mm |
| February | 19°C | 5°C | 11.7°C | 56 mm |
| March | 22°C | 8°C | 15.3°C | 71 mm |
| April | 26°C | 12°C | 19.1°C | 64 mm |
| May | 29°C | 17°C | 22.9°C | 134 mm |
| June | 32°C | 21°C | 26.3°C | 96 mm |
| July | 34°C | 22°C | 27.7°C | 72 mm |
| August | 35°C | 21°C | 27.9°C | 71 mm |
| September | 31°C | 18°C | 24.9°C | 99 mm |
| October | 27°C | 13°C | 20.0°C | 99 mm |
| November | 21°C | 7°C | 14.3°C | 74 mm |
| December | 17°C | 3°C | 10.2°C | 59 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00410902; 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 Boerne?
Normal highs sit between 65°F and 85°F in February, March, April, May, 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 USC00410902.
When is the last frost in Boerne?
In Boerne, the last spring frost (32°F) comes after March 15 in half of years and after April 8 in one year in ten; the first autumn frost comes before November 13 in half of years and before October 31 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 151 year in 10 after April 8; 9 in 10 after February 23
- First autumn frost, half of years before
- November 131 year in 10 before October 31; 9 in 10 before December 4
NOAA puts the median frost-free season at 243 days, and the season without a hard freeze (28°F) at 270 days.
A hard freeze (28°F) comes after March 2 in half of springs and before November 27 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Boerne in zone 8b in ZIP code 78006, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Boerne's NOAA station is in zone 8b: the coldest night of a typical year reaches 18°F (29 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 USC00410902; 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 Boerne?
In a normal year in Boerne, 95 days a year reach 90°F (5 of them 100°F or more), 40 nights fall to 32°F or colder and 79 days bring measurable precipitation.
- Days at 90°F or more
- 95a normal year
- Days at 100°F or more
- 5a normal year
- Nights at 32°F or colder
- 40a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 79a normal year
The highest temperature in this station's record (since 1898) is 112°F, on August 23, 1925; the lowest is −4°F, on January 31, 1949.
The wettest calendar year on that record is 1992, with 64.17 in; the snowiest season is 1925–26, with 11.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00410902; records: ACIS (NOAA Regional Climate Centers), station USC00410902. Records use complete months only; a month missing more than three days is left out.
How sunny is Boerne?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Boerne, 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 much heating and cooling does Boerne need?
A normal year in Boerne brings 1,916 heating degree days, 64% fewer than the median U.S. place (5,373), and 2,480 cooling degree days, 2.7 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 6,414 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 498 | 4 |
| February | 347 | 11 |
| March | 208 | 42 |
| April | 73 | 112 |
| May | 11 | 269 |
| June | 0 | 432 |
| July | 0 | 519 |
| August | 0 | 536 |
| September | 4 | 358 |
| October | 64 | 159 |
| November | 252 | 33 |
| December | 459 | 5 |
| Year (annual) | 1,916 | 2,480 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00410902. 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 Boerne been warmer than normal lately?
2025 averaged 68.7°F, 2.2°F above the 1991-2020 normal of 66.5°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.6°F | +0.1°F | 41.51 |
| 2022 | 67.6°F | +1.1°F | 15.07 |
| 2023 | 69.1°F | +2.6°F | 24.71 |
| 2024 | 69.3°F | +2.8°F | 30.39 |
| 2025 | 68.7°F | +2.2°F | 28.89 |
Over 102 complete years from 1893 to 2025, the station's annual mean temperature rose at a fitted 1.0°F per century (+0.06°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00410902; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Boerne's climate compare?
Boerne is warmer than 188 of the other 320 places with their own NOAA record in Texas, and wetter than 209. Across the 7,247 U.S. stations with normals, its annual mean of 66.5°F is warmer than 91%.
In the Köppen classification computed from these normals, Boerne 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 Boerne share this climate record?
5 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.
- Fair Oaks Ranch, TX11,744 people · 7 mi SE
- Scenic Oaks, TX10,727 people · 8 mi SE
- Lakehills, TX5,872 people · 17 mi SW
- Cross Mountain, TX4,510 people · 11 mi S
- Lake Medina Shores, TX1,198 people · 19 mi SW
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 Boerne's climate
What is the coldest month in Boerne?
January, with a normal high of 62°F and a normal low of 37°F. The warmest is August (94°F by day, 71°F at night).
Does it snow in Boerne?
Rarely: NOAA's normal is 0.1 inch a year.
What is the rainiest month in Boerne?
May, with 5.28 in of precipitation in a normal year; the driest is February with 2.22 in.
What plant hardiness zone is Boerne in?
The USDA's 2023 map puts Boerne in zone 8b in ZIP code 78006, the nearest ZIP area. By the same method at Boerne's NOAA station, the coldest night of a typical year reaches 18°F (29 years, 1991-2020): zone 8b.
How late can frost come in Boerne?
In half of years the last 32°F night comes after March 15; in one year in ten it comes after April 8. Waiting until April 8 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Boerne in OctoberThis month day by day, its records and recent years
- Texas climateThe statewide normals and every place in the state
- San Antonio, TX23 miles from this station, 69.6°F a year
- San Antonio/Seaworld, TX24 miles from this station, 71.2°F a year
- San Antonio Incarnate Word, TX27 miles from this station, 69.0°F a year
- Blanco, TX28 miles from this station, 65.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made