Climate Comfort Score
29/100
Below Average
NOAA 1991–2020 normals 42°F annual avg Public-domain federal data
Alamosa San Luis, CO Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 42°F
- Avg annual temp
- 29/100
- Comfort score
- 7.4"
- Annual precip
- 100d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Alamosa San Luis
Alamosa San Luis, Colorado averages 42°F a year and scores 29/100 on the comfort index - below average, milder than 0% of U.S. cities.
- 42°F
- average temperature, NOAA 1991-2020 normal
- 29/100
- comfort score, milder than 0% of U.S. cities
- 7.4"
- annual precipitation · 28" snow
- 100 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
42°F (6°C)
Avg High
60°F
Avg Low
24°F
Annual Precip
7.4"
Annual Snow
27.9"
Comfort Score
29/100
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) 29.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Alamosa San Luis area.
How Alamosa San Luis compares to every U.S. city
Alamosa San Luis's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
29 Top 100% higher than 0% 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 Alamosa San Luis
MethodologyAlamosa San Luis's NOAA 1991-2020 normal sits inside a longer story: U.S. land temperatures have been tracking (and drifting from) the global mean since 1900, and the chart below shows that spread, with the most recent decade running warmer than the 30-year mean.
- 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 | 35°F (2°C) | -1°F (-18°C) | 17°F (-8°C) | 0.3" | 4.5" | 31.0 | 0.0 |
| February | 41°F (5°C) | 7°F (-14°C) | 24°F (-4°C) | 0.3" | 4.1" | 27.9 | 0.0 |
| March | 53°F (12°C) | 18°F (-8°C) | 35°F (2°C) | 0.5" | 4.3" | 30.3 | 0.0 |
| April | 60°F (16°C) | 25°F (-4°C) | 43°F (6°C) | 0.6" | 3.5" | 26.6 | 0.0 |
| May | 70°F (21°C) | 34°F (1°C) | 52°F (11°C) | 0.6" | 0.8" | 13.1 | 0.0 |
| June | 80°F (27°C) | 41°F (5°C) | 61°F (16°C) | 0.4" | 0.0" | 2.0 | 1.2 |
| July | 83°F (29°C) | 47°F (8°C) | 65°F (19°C) | 1.0" | 0.0" | 0.1 | 2.4 |
| August | 81°F (27°C) | 46°F (8°C) | 63°F (17°C) | 1.3" | 0.0" | 0.2 | 0.3 |
| September | 74°F (24°C) | 37°F (3°C) | 56°F (13°C) | 1.0" | 0.5" | 7.9 | 0.0 |
| October | 63°F (17°C) | 25°F (-4°C) | 44°F (7°C) | 0.7" | 2.2" | 26.4 | 0.0 |
| November | 49°F (9°C) | 12°F (-11°C) | 30°F (-1°C) | 0.4" | 3.4" | 29.6 | 0.0 |
| December | 35°F (2°C) | 1°F (-17°C) | 18°F (-8°C) | 0.3" | 4.6" | 30.9 | 0.0 |
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
Growing Season
100 days
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) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 67% | 5.4 | 68% | 12% |
| February | 54% | 7.8 | 66% | 10% |
| March | 44% | 9.5 | 62% | 10% |
| April | 40% | 9.8 | 61% | 7% |
| May | 40% | 9.2 | 73% | 3% |
| June | 43% | 7.7 | 80% | 2% |
| July | 57% | 6.4 | 57% | 8% |
| August | 55% | 6.1 | 67% | 7% |
| September | 49% | 6.9 | 73% | 6% |
| October | 55% | 6.3 | 73% | 9% |
| November | 61% | 5.4 | 75% | 10% |
| December | 68% | 4.7 | 74% | 9% |
What Alamosa San Luis's climate means for you
Alamosa San Luis runs 42°F a year - peaking in July, coldest in January.
- Gardeners get about 100 frost-free days, with the last spring freeze near June 7 - plan the planting calendar around it, not the regional average.
- Energy bills track 8,321 heating and 71 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: 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.
Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Alamosa San Luis sees about 7.4 inches of precipitation a year, with 27.9 inches typically falling as snow. The frost-free season averages 100 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near June 7 and the first fall freeze near September 15. On the energy side, 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 29/100 (Below Average), 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, July-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 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 29/100 (Below Average), milder than 0% of U.S. cities in the PlainClimate database.
When is the growing season in Alamosa San Luis? ▼
Alamosa San Luis has approximately 100 frost-free days per year, with the last spring freeze around June 7 and the first fall freeze around September 15.
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, 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 Alamosa San Luis climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00023061 near Alamosa San Luis.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00023061. 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.