Climate Comfort Score
39/100
Below Average
NOAA 1991–2020 normals 26°F annual avg Public-domain federal data
Ruby, AK Climate
Annual temperature, rainfall, and a comfort score, sourced from NOAA NCEI's 1991–2020 normals →
- 26°F
- Avg annual temp
- 39/100
- Comfort score
- 104d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Ruby
Ruby, Alaska averages 26°F a year and scores 39/100 on the comfort index - below average, milder than 4% of U.S. cities.
- 26°F
- annual average temperature (NOAA normal)
- 39/100
- comfort score, milder than 4% of U.S. cities
- 104 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
26°F (-3°C)
Avg High
37°F
Avg Low
16°F
Annual Precip
N/A
Comfort Score
39/100
Below Average
Avg Annual Temperature
26°F
30-year mean (NOAA NCEI)
Annual Precipitation
N/A
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Ruby) 39.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Ruby area.
How Ruby compares to every U.S. city
Ruby's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
39 Top 96% higher than 4% 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 Ruby
MethodologyRuby'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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | -1°F (-19°C) | -21°F (-29°C) | -11°F (-24°C) | N/A | 31.0 | 0.0 |
| February | 12°F (-11°C) | -8°F (-22°C) | 2°F (-17°C) | N/A | 28.0 | 0.0 |
| March | 24°F (-4°C) | -4°F (-20°C) | 10°F (-12°C) | N/A | 30.8 | 0.0 |
| April | 43°F (6°C) | 18°F (-8°C) | 31°F (-1°C) | N/A | 27.9 | 0.0 |
| May | 59°F (15°C) | 33°F (1°C) | 46°F (8°C) | N/A | 12.0 | 0.0 |
| June | 70°F (21°C) | 46°F (8°C) | 58°F (14°C) | N/A | 0.7 | 0.0 |
| July | 71°F (22°C) | 49°F (10°C) | 60°F (16°C) | N/A | 0.0 | 0.3 |
| August | 64°F (18°C) | 43°F (6°C) | 54°F (12°C) | N/A | 2.1 | 0.0 |
| September | 53°F (11°C) | 33°F (0°C) | 43°F (6°C) | N/A | 14.2 | 0.0 |
| October | 34°F (1°C) | 17°F (-8°C) | 26°F (-4°C) | N/A | 26.3 | 0.0 |
| November | 12°F (-11°C) | -6°F (-21°C) | 3°F (-16°C) | N/A | 30.0 | 0.0 |
| December | 4°F (-16°C) | -13°F (-25°C) | -4°F (-20°C) | N/A | 31.0 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January N/A
February N/A
March N/A
April N/A
May N/A
June N/A
July N/A
August N/A
September N/A
October N/A
November N/A
December N/A
Frost Dates & Growing Season
First Fall Freeze
September 3
50% probability date
Last Spring Freeze
May 22
50% probability date
Growing Season
104 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
14,088
Higher = more heating needed
Cooling Degree Days
17
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Ruby's climate means for you
Ruby runs 26°F a year - peaking in July, coldest in January.
- Gardeners get about 104 frost-free days, with the last spring freeze near May 22 - plan the planting calendar around it, not the regional average.
- Energy bills track 14,088 heating and 17 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: Ruby, AK
Based on station USW00096406 feeding NOAA's 1991–2020 climate normals, Ruby, Alaska averages 26°F a year, ranging from a mean daily high of 37°F to a mean daily low of 16°F. July is typically the warmest month of the year, while January is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.
Beyond temperature, Ruby averages an uncharted amount of precipitation annually, predominantly as rainfall - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 104 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 22 and the first fall freeze near September 3. Turning to energy use, 14,088 heating degree days and 17 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Ruby scores 39/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above turn that into a planning tool: expect the mildest highs and lows in the shoulder seasons, July-driven heat at the peak of summer, and January-driven cold at the depth of winter. Every number here is a thirty-year average, not a forecast, so any given year can and does run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Ruby, AK? ▼
The average annual temperature in Ruby, Alaska is 26°F. The warmest month averages 71°F (22°C) and the coldest averages -21°F (-29°C).
How much rain does Ruby get? ▼
Ruby receives an unknown amount of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Ruby? ▼
Ruby has a climate comfort score of 39/100 (Below Average), milder than 4% of U.S. cities in the PlainClimate database.
When is the growing season in Ruby? ▼
Ruby has approximately 104 frost-free days per year, with the last spring freeze around May 22 and the first fall freeze around September 3.
How much energy does heating and cooling require in Ruby? ▼
Ruby has 14,088 heating degree days and 17 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 Ruby climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00096406 near Ruby.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00096406. 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.