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Fontenelle Dam, WY Climate

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

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

Fontenelle Dam, Wyoming has an average annual temperature of 38°F and a climate comfort score of 32/100 (Below Average). Annual precipitation totals 7.5", including 26.5" of snow. Based on NOAA 30-year normals (1991–2020).

Avg Temperature

38°F (3°C)

Avg High

55°F

Avg Low

22°F

Annual Precip

7.5"

Annual Snow

26.5"

Comfort Score

32/100

Below Average

Climate Comfort Score

32/100

Below Average

Avg Annual Temperature

38°F

30-year mean (NOAA NCEI)

Annual Precipitation

7.5"

Plus 26.5" of snow

Comfort score vs national 100-point ceiling (Fontenelle Dam) 32.0%
National median (≈55)

PlainClimate composite — temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Fontenelle Dam area.

Warming context for Fontenelle Dam

Methodology

How the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Fontenelle Dam 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 29°F (-2°C) 0°F (-18°C) 14°F (-10°C)
February 31°F (0°C) 3°F (-16°C) 17°F (-8°C)
March 43°F (6°C) 15°F (-10°C) 29°F (-2°C)
April 52°F (11°C) 21°F (-6°C) 37°F (3°C)
May 63°F (17°C) 31°F (-1°C) 47°F (8°C)
June 74°F (23°C) 38°F (4°C) 56°F (13°C)
July 83°F (29°C) 45°F (7°C) 64°F (18°C)
August 82°F (28°C) 43°F (6°C) 62°F (17°C)
September 71°F (22°C) 34°F (1°C) 53°F (11°C)
October 57°F (14°C) 23°F (-5°C) 40°F (4°C)
November 41°F (5°C) 10°F (-12°C) 26°F (-4°C)
December 29°F (-2°C) 0°F (-18°C) 14°F (-10°C)

Monthly Precipitation

Average monthly rainfall and snowfall

January 0.3"

Snow: 5.4"

3.4 days with precipitation

February 0.4"

Snow: 6.6"

3.8 days with precipitation

March 0.5"

Snow: 3.8"

4.6 days with precipitation

April 0.8"

Snow: 2.2"

5.4 days with precipitation

May 1.4"

Snow: 0.6"

8.2 days with precipitation

June 0.8"

5.0 days with precipitation

July 0.5"

4.5 days with precipitation

August 0.7"

5.5 days with precipitation

September 0.8"

5.7 days with precipitation

October 0.7"

Snow: 1.3"

4.4 days with precipitation

November 0.3"

Snow: 2.1"

3.4 days with precipitation

December 0.3"

Snow: 4.5"

3.8 days with precipitation

Frost Dates & Growing Season

First Fall Freeze

N/A

50% probability date

Last Spring Freeze

N/A

50% probability date

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

9,854

Higher = more heating needed

Cooling Degree Days

109

Higher = more cooling needed

Warmest Month

July

Coldest Month

January

Related Data

Climate Guides

Climate Insight: Fontenelle Dam, WY

The NOAA 1991–2020 climate normals describe Fontenelle Dam, Wyoming as a location with an annual average temperature of 38°F, ranging from a mean daily high of 55°F to a mean daily low of 22°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00483396, 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. Fontenelle Dam receives roughly 7.5 inches of precipitation each year, with 26.5 inches typically falling as snow. Growing-season length varies with elevation and microclimate, with the last spring freeze near N/A and the first fall freeze near N/A. For energy use, 9,854 heating degree days and 109 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Fontenelle Dam 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 Fontenelle Dam, WY?
The average annual temperature in Fontenelle Dam, Wyoming is 38°F. The warmest month averages 83°F (29°C) and the coldest averages 0°F (-18°C).
How much rain does Fontenelle Dam get?
Fontenelle Dam receives 7.5 inches of precipitation annually, including 26.5 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Fontenelle Dam?
Fontenelle Dam 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 Fontenelle Dam?
Growing season data is not available for Fontenelle Dam.
How much energy does heating and cooling require in Fontenelle Dam?
Fontenelle Dam has 9,854 heating degree days and 109 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 Fontenelle Dam 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 USC00483396. 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: USC00483396. For informational purposes only.

Related

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