Climate Comfort Score
77/100
Good
NOAA 1991–2020 normals 69°F annual avg Public-domain federal data
Sam Rayburn Dam, TX Climate
Pulled from NOAA NCEI 1991–2020 normals →: average temperature, precipitation, and comfort score
- 69°F
- Avg annual temp
- 77/100
- Comfort score
- 60.0"
- Annual precip
- 280d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Sam Rayburn Dam
Sam Rayburn Dam, Texas averages 69°F a year and scores 77/100 on the comfort index - good, milder than 72% of U.S. cities.
- 69°F
- annual average temperature (NOAA normal)
- 77/100
- comfort score, milder than 72% of U.S. cities
- 60.0"
- precipitation, annual total
- 280 days
- growing season, frost-free days
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
69°F (20°C)
Avg High
78°F
Avg Low
59°F
Annual Precip
60.0"
Annual Snow
0.0"
Comfort Score
77/100
Good
Avg Annual Temperature
69°F
30-year mean (NOAA NCEI)
Annual Precipitation
60.0"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Sam Rayburn Dam) 77.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Sam Rayburn Dam area.
How Sam Rayburn Dam compares to every U.S. city
Sam Rayburn Dam's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
77 Top 28% higher than 72% 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 Sam Rayburn Dam
MethodologyZooming out from Sam Rayburn Dam's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- 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 | 60°F (16°C) | 41°F (5°C) | 51°F (10°C) | 5.6" | 0.0" | 10.5 | 0.0 |
| February | 64°F (18°C) | 45°F (7°C) | 54°F (12°C) | 4.8" | 0.0" | 5.9 | 0.0 |
| March | 71°F (22°C) | 51°F (11°C) | 61°F (16°C) | 5.4" | 0.0" | 2.0 | 0.1 |
| April | 78°F (26°C) | 58°F (14°C) | 68°F (20°C) | 4.6" | 0.0" | 0.3 | 0.4 |
| May | 85°F (30°C) | 66°F (19°C) | 76°F (24°C) | 4.5" | 0.0" | 0.0 | 6.2 |
| June | 91°F (33°C) | 73°F (23°C) | 82°F (28°C) | 5.5" | 0.0" | 0.0 | 19.1 |
| July | 94°F (34°C) | 75°F (24°C) | 84°F (29°C) | 3.5" | 0.0" | 0.0 | 25.4 |
| August | 95°F (35°C) | 74°F (24°C) | 85°F (29°C) | 5.0" | 0.0" | 0.0 | 25.3 |
| September | 89°F (32°C) | 70°F (21°C) | 80°F (27°C) | 4.4" | 0.0" | 0.0 | 14.8 |
| October | 81°F (27°C) | 59°F (15°C) | 70°F (21°C) | 5.2" | 0.0" | 0.2 | 2.6 |
| November | 70°F (21°C) | 50°F (10°C) | 60°F (15°C) | 5.3" | 0.0" | 2.6 | 0.0 |
| December | 62°F (17°C) | 43°F (6°C) | 53°F (11°C) | 6.1" | 0.0" | 8.2 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 5.6"
11.3 days with precipitation
February 4.8"
9.9 days with precipitation
March 5.4"
10.0 days with precipitation
April 4.6"
8.0 days with precipitation
May 4.5"
9.1 days with precipitation
June 5.5"
9.9 days with precipitation
July 3.5"
8.8 days with precipitation
August 5.0"
9.1 days with precipitation
September 4.4"
8.1 days with precipitation
October 5.2"
7.9 days with precipitation
November 5.3"
9.0 days with precipitation
December 6.1"
11.3 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
December 1
50% probability date
Last Spring Freeze
February 24
50% probability date
Growing Season
280 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,671
Higher = more heating needed
Cooling Degree Days
2,988
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
What Sam Rayburn Dam's climate means for you
Sam Rayburn Dam runs 69°F a year - peaking in August, coldest in January.
- Gardeners get about 280 frost-free days, with the last spring freeze near February 24 - plan the planting calendar around it, not the regional average.
- Energy bills track 1,671 heating and 2,988 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: Sam Rayburn Dam, TX
Sam Rayburn Dam, Texas runs an annual average of 69°F, ranging from a mean daily high of 78°F to a mean daily low of 59°F, per NOAA's 1991–2020 climate normals. August is typically the warmest month of the year, while January is the coldest. Drawn from station USC00417936, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Beyond temperature, Sam Rayburn Dam averages 60.0 inches of precipitation annually, with negligible snowfall - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 280 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near February 24 and the first fall freeze near December 1. Turning to energy use, 1,671 heating degree days and 2,988 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Sam Rayburn Dam scores 77/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for August-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Sam Rayburn Dam, TX? ▼
The average annual temperature in Sam Rayburn Dam, Texas is 69°F. The warmest month averages 95°F (35°C) and the coldest averages 41°F (5°C).
How much rain does Sam Rayburn Dam get? ▼
Sam Rayburn Dam receives 60.0 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Sam Rayburn Dam? ▼
Sam Rayburn Dam has a climate comfort score of 77/100 (Good), milder than 72% of U.S. cities in the PlainClimate database.
When is the growing season in Sam Rayburn Dam? ▼
Sam Rayburn Dam has approximately 280 frost-free days per year, with the last spring freeze around February 24 and the first fall freeze around December 1.
How much energy does heating and cooling require in Sam Rayburn Dam? ▼
Sam Rayburn Dam has 1,671 heating degree days and 2,988 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 Sam Rayburn Dam climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00417936 near Sam Rayburn Dam.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00417936. 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.