Climate Comfort Score
44/100
Moderate
NOAA 1991–2020 normals 39°F annual avg Public-domain federal data
Green MT Dam, CO Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 39°F
- Avg annual temp
- 44/100
- Comfort score
- 16.5"
- Annual precip
- 100d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Green MT Dam
Green MT Dam, Colorado averages 39°F a year and scores 44/100 on the comfort index - moderate, milder than 8% of U.S. cities.
- 39°F
- yearly average temperature, NOAA normal
- 44/100
- comfort score, milder than 8% of U.S. cities
- 16.5"
- yearly precipitation total
- 100 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
39°F (4°C)
Avg High
53°F
Avg Low
24°F
Annual Precip
16.5"
Comfort Score
44/100
Moderate
Avg Annual Temperature
39°F
30-year mean (NOAA NCEI)
Annual Precipitation
16.5"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Green MT Dam) 44.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Green MT Dam area.
How Green MT Dam compares to every U.S. city
Green MT Dam's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
44 Top 92% higher than 8% 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 Green MT Dam
MethodologySince 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. Green MT Dam's current NOAA 1991-2020 normal sits within that longer spread, and the most recent decade runs 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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 28°F (-2°C) | 4°F (-16°C) | 16°F (-9°C) | 1.1" | 31.0 | 0.0 |
| February | 33°F (0°C) | 7°F (-14°C) | 20°F (-7°C) | 1.1" | 28.0 | 0.0 |
| March | 42°F (6°C) | 15°F (-9°C) | 29°F (-2°C) | 1.2" | 30.8 | 0.0 |
| April | 51°F (10°C) | 24°F (-4°C) | 37°F (3°C) | 1.9" | 27.8 | 0.0 |
| May | 61°F (16°C) | 32°F (0°C) | 46°F (8°C) | 1.7" | 15.9 | 0.0 |
| June | 74°F (23°C) | 39°F (4°C) | 57°F (14°C) | 1.1" | 3.6 | 0.0 |
| July | 79°F (26°C) | 44°F (7°C) | 62°F (16°C) | 1.6" | 0.3 | 0.6 |
| August | 76°F (24°C) | 43°F (6°C) | 59°F (15°C) | 1.6" | 0.9 | 0.2 |
| September | 69°F (20°C) | 36°F (2°C) | 52°F (11°C) | 1.5" | 11.5 | 0.0 |
| October | 55°F (13°C) | 26°F (-3°C) | 41°F (5°C) | 1.4" | 25.2 | 0.0 |
| November | 40°F (4°C) | 16°F (-9°C) | 28°F (-2°C) | 1.1" | 29.5 | 0.0 |
| December | 29°F (-2°C) | 6°F (-14°C) | 18°F (-8°C) | 1.3" | 30.9 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 1.1"
February 1.1"
March 1.2"
April 1.9"
May 1.7"
June 1.1"
July 1.6"
August 1.6"
September 1.5"
October 1.4"
November 1.1"
December 1.3"
Frost Dates & Growing Season
First Fall Freeze
September 14
50% probability date
Last Spring Freeze
June 6
50% probability date
Growing Season
100 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
9,619
Higher = more heating needed
Cooling Degree Days
25
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Green MT Dam's climate means for you
Green MT Dam runs 39°F a year - peaking in July, coldest in January.
- Gardeners get about 100 frost-free days, with the last spring freeze near June 6 - plan the planting calendar around it, not the regional average.
- Energy bills track 9,619 heating and 25 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: Green MT Dam, CO
Green MT Dam, Colorado runs an annual average of 39°F, ranging from a mean daily high of 53°F to a mean daily low of 24°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00053592, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Beyond temperature, Green MT Dam averages 16.5 inches of precipitation annually, predominantly as rainfall - a real factor for anyone planning to live, garden, or travel here. 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 6 and the first fall freeze near September 14. Turning to energy use, 9,619 heating degree days and 25 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Green MT Dam scores 44/100 (Moderate), 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 Green MT Dam, CO? ▼
The average annual temperature in Green MT Dam, Colorado is 39°F. The warmest month averages 79°F (26°C) and the coldest averages 4°F (-16°C).
How much rain does Green MT Dam get? ▼
Green MT Dam receives 16.5 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Green MT Dam? ▼
Green MT Dam has a climate comfort score of 44/100 (Moderate), milder than 8% of U.S. cities in the PlainClimate database.
When is the growing season in Green MT Dam? ▼
Green MT Dam has approximately 100 frost-free days per year, with the last spring freeze around June 6 and the first fall freeze around September 14.
How much energy does heating and cooling require in Green MT Dam? ▼
Green MT Dam has 9,619 heating degree days and 25 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 Green MT Dam climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00053592 near Green MT Dam.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00053592. 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.