PlainClimate
NOAA 1991–2020 normals 66°F annual avg Public-domain federal data

Blanco, TX Climate

Annual temperature, rainfall, and a comfort score, sourced from NOAA NCEI's 1991–2020 normals →

66°F
Avg annual temp
93/100
Comfort score
34.8"
Annual precip
235d
Growing season

30-year climate normals from 1 weather station (1991-2020).

The climate verdict for Blanco

Blanco, Texas averages 66°F a year and scores 93/100 on the comfort index - excellent, milder than 95% of U.S. cities.

66°F
yearly average temperature, NOAA normal
93/100
comfort score, milder than 95% of U.S. cities
34.8"
yearly precipitation total
235 days
frost-free growing season

Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.

Avg Temperature

66°F (19°C)

Avg High

77°F

Avg Low

54°F

Annual Precip

34.8"

Annual Snow

0.1"

Comfort Score

93/100

Excellent

Climate Comfort Score

93/100

Excellent

Avg Annual Temperature

66°F

30-year mean (NOAA NCEI)

Annual Precipitation

34.8"

Liquid-equivalent total

Comfort score vs national 100-point ceiling (Blanco) 93.0%
National median (63)

PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Blanco area.

How Blanco compares to every U.S. city

Blanco's comfort score vs. all U.S. cities

PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals

93 Top 5% higher than 95% of 6,915 US cities

0–10: 0 US cities (0%). Below this entry. 10–20: 0 US cities (0%). Below this entry. 20–30: 58 US cities (1%). Below this entry. 30–40: 439 US cities (6%). Below this entry. 40–50: 1,302 US cities (19%). Below this entry. 50–60: 1,433 US cities (21%). Below this entry. 60–70: 1,357 US cities (20%). Below this entry. 70–80: 1,102 US cities (16%). Below this entry. 80–90: 778 US cities (11%). Below this entry. 90–100: 420 US cities (6%). This entry sits in this band. This city 0 100 every U.S. city, bucketed by value

Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020

Warming context for Blanco

Methodology

The chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Blanco, the NOAA 1991-2020 normal captures average conditions across that spread - notably, the most recent decade runs warmer than the 30-year mean itself.

Warming context, U.S. vs global, with Paris reference lines Anomaly chart from 1900 to 2024. Local series shows warming of 0.11 °C per decade versus a global rate of 0.11 °C per decade (ratio 1.00). Paris Agreement thresholds at 1.5 and 2.0 °C are dashed. -1.0°C -0.5°C +0.0°C +0.5°C +1.0°C +1.5°C +2.0°C +2.5°C Paris 1.5°C Paris 2.0°C 1900192019401960198020002020
  • United States land mean (NOAA NCEI) +0.11 °C/decade
  • Global anomaly (NASA GISTEMP) +0.11 °C/decade
  • Paris Agreement thresholds 1.5°C / 2.0°C
Sources: NOAA NCEI, NASA GISTEMP. Paris thresholds per IPCC AR6 WG1.

Monthly Temperatures

Average daily high and low temperatures by month

Month Avg High Avg Low Mean
January 60°F (15°C) 35°F (2°C) 48°F (9°C)
February 64°F (18°C) 39°F (4°C) 51°F (11°C)
March 70°F (21°C) 46°F (8°C) 58°F (15°C)
April 77°F (25°C) 53°F (11°C) 65°F (18°C)
May 83°F (29°C) 62°F (17°C) 73°F (23°C)
June 90°F (32°C) 68°F (20°C) 79°F (26°C)
July 93°F (34°C) 71°F (21°C) 82°F (28°C)
August 94°F (35°C) 70°F (21°C) 82°F (28°C)
September 88°F (31°C) 64°F (18°C) 76°F (24°C)
October 79°F (26°C) 55°F (13°C) 67°F (19°C)
November 68°F (20°C) 45°F (7°C) 57°F (14°C)
December 61°F (16°C) 37°F (3°C) 49°F (10°C)

Monthly Precipitation

Average monthly rainfall and snowfall

January 2.3"

7.0 days with precipitation

February 1.9"

6.8 days with precipitation

March 2.9"

8.3 days with precipitation

April 2.8"

6.7 days with precipitation

May 5.0"

7.6 days with precipitation

June 3.2"

5.7 days with precipitation

July 1.8"

4.4 days with precipitation

August 2.1"

4.5 days with precipitation

September 3.7"

6.1 days with precipitation

October 4.0"

6.0 days with precipitation

November 2.9"

6.1 days with precipitation

December 2.2"

Snow: 0.1"

6.7 days with precipitation

Frost Dates & Growing Season

First Fall Freeze

November 10

50% probability date

Last Spring Freeze

March 20

50% probability date

Growing Season

235 days

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

2,145

Higher = more heating needed

Cooling Degree Days

2,351

Higher = more cooling needed

Warmest Month

August

Coldest Month

January

What Blanco's climate means for you

Blanco runs 66°F a year - peaking in August, coldest in January.

  • Gardeners get about 235 frost-free days, with the last spring freeze near March 20 - plan the planting calendar around it, not the regional average.
  • Energy bills track 2,145 heating and 2,351 cooling degree days a year, higher means the furnace or AC runs more.
  • Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings

These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.

Climate Guides

Climate Insight: Blanco, TX

The NOAA 1991–2020 climate normals describe Blanco, Texas as a location with an annual average temperature of 66°F, ranging from a mean daily high of 77°F to a mean daily low of 54°F. August is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00410832, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Blanco sees about 34.8 inches of precipitation a year, with negligible snowfall. The frost-free season averages 235 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 20 and the first fall freeze near November 10. On the energy side, 2,145 heating degree days and 2,351 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Blanco scores 93/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, August-driven heat peaks in summer, and January-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.

Frequently Asked Questions

What is the average temperature in Blanco, TX?
The average annual temperature in Blanco, Texas is 66°F. The warmest month averages 94°F (35°C) and the coldest averages 35°F (2°C).
How much rain does Blanco get?
Blanco receives 34.8 inches of precipitation annually, including 0.1 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Blanco?
Blanco has a climate comfort score of 93/100 (Excellent), milder than 95% of U.S. cities in the PlainClimate database.
When is the growing season in Blanco?
Blanco has approximately 235 frost-free days per year, with the last spring freeze around March 20 and the first fall freeze around November 10.
How much energy does heating and cooling require in Blanco?
Blanco has 2,145 heating degree days and 2,351 cooling degree days annually, a fairly balanced heating/cooling split. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Blanco climate data come from?
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00410832 near Blanco.

Data Sources

Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00410832. For informational purposes only.

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial

Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.