Climate Comfort Score
78/100
Good
NOAA 1991–2020 normals 59°F annual avg Public-domain federal data
Shamrock, TX Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 59°F
- Avg annual temp
- 78/100
- Comfort score
- 25.3"
- Annual precip
- 204d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Shamrock
Shamrock, Texas averages 59°F a year and scores 78/100 on the comfort index - good, milder than 74% of U.S. cities.
- 59°F
- yearly average temperature, NOAA normal
- 78/100
- comfort score, milder than 74% of U.S. cities
- 25.3"
- annual precipitation · 9" snow
- 204 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
59°F (15°C)
Avg High
72°F
Avg Low
45°F
Annual Precip
25.3"
Annual Snow
9.1"
Comfort Score
78/100
Good
Avg Annual Temperature
59°F
30-year mean (NOAA NCEI)
Annual Precipitation
25.3"
Plus 9.1" of snow
Comfort score vs national 100-point ceiling (Shamrock) 78.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Shamrock area.
How Shamrock compares to every U.S. city
Shamrock's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
78 Top 26% higher than 74% of 6,915 US cities
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 Shamrock
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Shamrock, the NOAA 1991-2020 normal captures average conditions across that spread - notably, the most recent decade runs warmer than the 30-year mean itself.
- 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 50°F (10°C) | 24°F (-5°C) | 37°F (3°C) | 0.8" | 2.7" | 25.9 | 0.0 |
| February | 55°F (13°C) | 27°F (-3°C) | 41°F (5°C) | 0.9" | 2.1" | 19.9 | 0.1 |
| March | 64°F (18°C) | 35°F (1°C) | 49°F (10°C) | 1.7" | 1.6" | 10.6 | 0.3 |
| April | 72°F (22°C) | 43°F (6°C) | 58°F (14°C) | 2.5" | 0.0" | 2.6 | 1.5 |
| May | 81°F (27°C) | 53°F (12°C) | 67°F (19°C) | 3.4" | 0.0" | 0.1 | 6.8 |
| June | 89°F (32°C) | 63°F (17°C) | 76°F (25°C) | 3.7" | 0.0" | 0.0 | 15.8 |
| July | 94°F (34°C) | 68°F (20°C) | 81°F (27°C) | 2.4" | 0.0" | 0.0 | 24.6 |
| August | 93°F (34°C) | 66°F (19°C) | 79°F (26°C) | 2.8" | 0.0" | 0.0 | 21.7 |
| September | 85°F (29°C) | 58°F (15°C) | 72°F (22°C) | 2.4" | 0.0" | 0.0 | 9.4 |
| October | 73°F (23°C) | 45°F (7°C) | 59°F (15°C) | 2.3" | 0.0" | 1.4 | 1.8 |
| November | 61°F (16°C) | 34°F (1°C) | 47°F (9°C) | 1.3" | 0.8" | 11.5 | 0.0 |
| December | 51°F (11°C) | 26°F (-4°C) | 39°F (4°C) | 1.0" | 1.9" | 24.6 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 0.8"
Snow: 2.7"
2.9 days with precipitation
February 0.9"
Snow: 2.1"
3.9 days with precipitation
March 1.7"
Snow: 1.6"
4.8 days with precipitation
April 2.5"
5.4 days with precipitation
May 3.4"
7.6 days with precipitation
June 3.7"
7.2 days with precipitation
July 2.4"
5.5 days with precipitation
August 2.8"
6.9 days with precipitation
September 2.4"
5.6 days with precipitation
October 2.3"
4.9 days with precipitation
November 1.3"
Snow: 0.8"
3.8 days with precipitation
December 1.0"
Snow: 1.9"
3.6 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 30
50% probability date
Last Spring Freeze
April 9
50% probability date
Growing Season
204 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
3,972
Higher = more heating needed
Cooling Degree Days
1,698
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Shamrock's climate means for you
Shamrock runs 59°F a year - peaking in July, coldest in January.
- Gardeners get about 204 frost-free days, with the last spring freeze near April 9 - plan the planting calendar around it, not the regional average.
- Energy bills track 3,972 heating and 1,698 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: Shamrock, TX
Based on station USC00418236 feeding NOAA's 1991–2020 climate normals, Shamrock, Texas averages 59°F a year, ranging from a mean daily high of 72°F to a mean daily low of 45°F. July is typically the warmest month of the year, while January is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.
Beyond temperature, Shamrock averages 25.3 inches of precipitation annually, with 9.1 inches typically falling as snow - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 204 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 9 and the first fall freeze near October 30. Turning to energy use, 3,972 heating degree days and 1,698 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Shamrock scores 78/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Shoulder seasons bring the mildest highs and lows in the monthly tables above, summer brings July-driven heat, and winter brings January-driven cold - use that rhythm for planning. These figures are thirty-year averages rather than forecasts, so a specific year may still run warmer, cooler, wetter, or drier than what's shown.
Frequently Asked Questions
What is the average temperature in Shamrock, TX? ▼
The average annual temperature in Shamrock, Texas is 59°F. The warmest month averages 94°F (34°C) and the coldest averages 24°F (-5°C).
How much rain does Shamrock get? ▼
Shamrock receives 25.3 inches of precipitation annually, including 9.1 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Shamrock? ▼
Shamrock has a climate comfort score of 78/100 (Good), milder than 74% of U.S. cities in the PlainClimate database.
When is the growing season in Shamrock? ▼
Shamrock has approximately 204 frost-free days per year, with the last spring freeze around April 9 and the first fall freeze around October 30.
How much energy does heating and cooling require in Shamrock? ▼
Shamrock has 3,972 heating degree days and 1,698 cooling degree days annually, a heating-dominated climate. 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 Shamrock climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00418236 near Shamrock.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00418236. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
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.