Climate Comfort Score
54/100
Moderate
NOAA 1991–2020 normals 49°F annual avg Public-domain federal data
Guernsey Dam, WY Climate
Pulled from NOAA NCEI 1991–2020 normals →: average temperature, precipitation, and comfort score
- 49°F
- Avg annual temp
- 54/100
- Comfort score
- 16.1"
- Annual precip
- 145d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Guernsey Dam
Guernsey Dam, Wyoming averages 49°F a year and scores 54/100 on the comfort index - moderate, milder than 27% of U.S. cities.
- 49°F
- yearly average temperature, NOAA normal
- 54/100
- comfort score, milder than 27% of U.S. cities
- 16.1"
- precipitation, annual total
- 145 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
49°F (9°C)
Avg High
63°F
Avg Low
35°F
Annual Precip
16.1"
Comfort Score
54/100
Moderate
Avg Annual Temperature
49°F
30-year mean (NOAA NCEI)
Annual Precipitation
16.1"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Guernsey Dam) 54.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Guernsey Dam area.
How Guernsey Dam compares to every U.S. city
Guernsey Dam's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
54 Top 73% higher than 27% 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 Guernsey Dam
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Guernsey Dam, the NOAA 1991-2020 normal captures average conditions across that spread - notably, the most recent decade runs warmer than the 30-year mean itself.
- 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 | 39°F (4°C) | 14°F (-10°C) | 26°F (-3°C) | 0.4" | 30.4 | 0.0 |
| February | 43°F (6°C) | 16°F (-9°C) | 29°F (-1°C) | 0.5" | 27.2 | 0.0 |
| March | 52°F (11°C) | 25°F (-4°C) | 39°F (4°C) | 0.9" | 25.5 | 0.0 |
| April | 59°F (15°C) | 32°F (0°C) | 46°F (8°C) | 2.0" | 15.8 | 0.0 |
| May | 69°F (21°C) | 43°F (6°C) | 56°F (13°C) | 3.0" | 3.7 | 2.0 |
| June | 80°F (27°C) | 53°F (12°C) | 67°F (19°C) | 2.1" | 0.0 | 11.1 |
| July | 89°F (32°C) | 59°F (15°C) | 74°F (24°C) | 1.7" | 0.0 | 19.5 |
| August | 87°F (31°C) | 57°F (14°C) | 72°F (22°C) | 1.2" | 0.0 | 21.6 |
| September | 78°F (26°C) | 47°F (9°C) | 63°F (17°C) | 1.3" | 1.2 | 10.1 |
| October | 63°F (17°C) | 33°F (1°C) | 48°F (9°C) | 1.5" | 14.0 | 0.6 |
| November | 50°F (10°C) | 24°F (-5°C) | 37°F (3°C) | 0.4" | 25.7 | 0.0 |
| December | 40°F (4°C) | 13°F (-10°C) | 27°F (-3°C) | 0.9" | 30.5 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 0.4"
February 0.5"
March 0.9"
April 2.0"
May 3.0"
June 2.1"
July 1.7"
August 1.2"
September 1.3"
October 1.5"
November 0.4"
December 0.9"
Frost Dates & Growing Season
First Fall Freeze
October 3
50% probability date
Last Spring Freeze
May 11
50% probability date
Growing Season
145 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,659
Higher = more heating needed
Cooling Degree Days
712
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Guernsey Dam's climate means for you
Guernsey Dam runs 49°F a year - peaking in July, coldest in January.
- Gardeners get about 145 frost-free days, with the last spring freeze near May 11 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,659 heating and 712 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: Guernsey Dam, WY
In Guernsey Dam, Wyoming, the NOAA 1991–2020 climate normals put the annual average temperature at 49°F, ranging from a mean daily high of 63°F to a mean daily low of 35°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00484126, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Guernsey Dam averages 16.1 inches of precipitation a year, predominantly as rainfall, and that matters as much to daily life here as temperature does. The frost-free season averages 145 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 11 and the first fall freeze near October 3. As for energy demand, 6,659 heating degree days and 712 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Guernsey Dam scores 54/100 (Moderate), 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 Guernsey Dam, WY? ▼
The average annual temperature in Guernsey Dam, Wyoming is 49°F. The warmest month averages 89°F (32°C) and the coldest averages 13°F (-10°C).
How much rain does Guernsey Dam get? ▼
Guernsey Dam receives 16.1 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Guernsey Dam? ▼
Guernsey Dam has a climate comfort score of 54/100 (Moderate), milder than 27% of U.S. cities in the PlainClimate database.
When is the growing season in Guernsey Dam? ▼
Guernsey Dam has approximately 145 frost-free days per year, with the last spring freeze around May 11 and the first fall freeze around October 3.
How much energy does heating and cooling require in Guernsey Dam? ▼
Guernsey Dam has 6,659 heating degree days and 712 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 Guernsey Dam climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00484126 near Guernsey Dam.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00484126. 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.