PlainClimate
2026 data Public-data reference. official source

Alamosa San Luis, CO Climate

Temperature, precipitation, and comfort score from NOAA NCEI 1991-2020 normals →

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

Alamosa San Luis, Colorado has an average annual temperature of 42°F and a climate comfort score of 32/100 (Below Average). Annual precipitation totals 7.4", including 27.9" of snow. Based on NOAA 30-year normals (1991–2020).

Avg Temperature

42°F (6°C)

Avg High

60°F

Avg Low

24°F

Annual Precip

7.4"

Annual Snow

27.9"

Comfort Score

32/100

Below Average

Climate Comfort Score

32/100

Below Average

Avg Annual Temperature

42°F

30-year mean (NOAA NCEI)

Annual Precipitation

7.4"

Plus 27.9" of snow

Comfort score vs national 100-point ceiling (Alamosa San Luis) 32.0%
National median (≈55)

PlainClimate composite — temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Alamosa San Luis area.

Warming context for Alamosa San Luis

Methodology

How the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Alamosa San Luis captures average conditions across the spread shown — the most recent decade is warmer than the 30-year mean.

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 35°F (2°C) -1°F (-18°C) 17°F (-8°C)
February 41°F (5°C) 7°F (-14°C) 24°F (-4°C)
March 53°F (12°C) 18°F (-8°C) 35°F (2°C)
April 60°F (16°C) 25°F (-4°C) 43°F (6°C)
May 70°F (21°C) 34°F (1°C) 52°F (11°C)
June 80°F (27°C) 41°F (5°C) 61°F (16°C)
July 83°F (29°C) 47°F (8°C) 65°F (19°C)
August 81°F (27°C) 46°F (8°C) 63°F (17°C)
September 74°F (24°C) 37°F (3°C) 56°F (13°C)
October 63°F (17°C) 25°F (-4°C) 44°F (7°C)
November 49°F (9°C) 12°F (-11°C) 30°F (-1°C)
December 35°F (2°C) 1°F (-17°C) 18°F (-8°C)

Monthly Precipitation

Average monthly rainfall and snowfall

January 0.3"

Snow: 4.5"

3.8 days with precipitation

February 0.3"

Snow: 4.1"

3.9 days with precipitation

March 0.5"

Snow: 4.3"

4.7 days with precipitation

April 0.6"

Snow: 3.5"

4.9 days with precipitation

May 0.6"

Snow: 0.8"

5.6 days with precipitation

June 0.4"

4.2 days with precipitation

July 1.0"

8.4 days with precipitation

August 1.3"

9.9 days with precipitation

September 1.0"

Snow: 0.5"

6.5 days with precipitation

October 0.7"

Snow: 2.2"

4.7 days with precipitation

November 0.4"

Snow: 3.4"

3.7 days with precipitation

December 0.3"

Snow: 4.6"

4.3 days with precipitation

Frost Dates & Growing Season

First Fall Freeze

September 15

50% probability date

Last Spring Freeze

June 7

50% probability date

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

8,321

Higher = more heating needed

Cooling Degree Days

71

Higher = more cooling needed

Warmest Month

July

Coldest Month

January

Humidity & Wind

Monthly averages from hourly observations

Month Humidity Wind (mph)
January 67% -411.5
February 54% 7.8
March 44% 9.5
April 40% 9.8
May 40% 9.2
June 43% 7.7
July 57% 6.4
August 55% 6.1
September 49% 6.9
October 55% 6.3
November 61% 5.4
December 68% 4.7

Related Data

Climate Guides

Climate Insight: Alamosa San Luis, CO

The NOAA 1991–2020 climate normals describe Alamosa San Luis, Colorado as a location with an annual average temperature of 42°F, ranging from a mean daily high of 60°F to a mean daily low of 24°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USW00023061, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Alamosa San Luis receives roughly 7.4 inches of precipitation each year, with 27.9 inches typically falling as snow. Growing-season length varies with elevation and microclimate, with the last spring freeze near June 7 and the first fall freeze near September 15. For energy use, 8,321 heating degree days and 71 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Alamosa San Luis scores 32/100 (Below Average), 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 July-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 Alamosa San Luis, CO?
The average annual temperature in Alamosa San Luis, Colorado is 42°F. The warmest month averages 83°F (29°C) and the coldest averages -1°F (-18°C).
How much rain does Alamosa San Luis get?
Alamosa San Luis receives 7.4 inches of precipitation annually, including 27.9 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Alamosa San Luis?
Alamosa San Luis has a climate comfort score of 32/100 (Below Average). This score considers temperature mildness, humidity, precipitation, and extreme weather frequency.
When is the growing season in Alamosa San Luis?
Growing season data is not available for Alamosa San Luis.
How much energy does heating and cooling require in Alamosa San Luis?
Alamosa San Luis has 8,321 heating degree days and 71 cooling degree days annually. Higher heating degree days indicate greater winter energy demand, while higher cooling degree days indicate greater summer cooling needs.
Where does this Alamosa San Luis climate data come from?
All climate data comes from NOAA U.S. Climate Normals v1.0.1, covering the 30-year period from 1991 to 2020. Data is collected from weather station USW00023061. These 30-year averages are the standard reference for typical weather conditions.

Data Sources

Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00023061. For informational purposes only.

Related

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