PlainClimate
2026 data Public-data reference. official source

Bethel, AK Climate

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

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

Bethel, Alaska has an average annual temperature of 31°F and a climate comfort score of 37/100 (Below Average). Annual precipitation totals 19.7", including 64.0" of snow. Based on NOAA 30-year normals (1991–2020).

Avg Temperature

31°F (0°C)

Avg High

38°F

Avg Low

24°F

Annual Precip

19.7"

Annual Snow

64.0"

Comfort Score

37/100

Below Average

Climate Comfort Score

37/100

Below Average

Avg Annual Temperature

31°F

30-year mean (NOAA NCEI)

Annual Precipitation

19.7"

Plus 64.0" of snow

Comfort score vs national 100-point ceiling (Bethel) 37.0%
National median (≈55)

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

Warming context for Bethel

Methodology

How the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Bethel 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 13°F (-11°C) 1°F (-17°C) 7°F (-14°C)
February 20°F (-7°C) 7°F (-14°C) 13°F (-10°C)
March 22°F (-6°C) 7°F (-14°C) 15°F (-10°C)
April 37°F (3°C) 21°F (-6°C) 29°F (-2°C)
May 52°F (11°C) 34°F (1°C) 43°F (6°C)
June 62°F (17°C) 45°F (7°C) 53°F (12°C)
July 64°F (18°C) 49°F (9°C) 56°F (13°C)
August 61°F (16°C) 47°F (8°C) 54°F (12°C)
September 53°F (12°C) 39°F (4°C) 46°F (8°C)
October 38°F (3°C) 26°F (-3°C) 32°F (0°C)
November 24°F (-4°C) 13°F (-11°C) 19°F (-7°C)
December 16°F (-9°C) 4°F (-16°C) 10°F (-12°C)

Monthly Precipitation

Average monthly rainfall and snowfall

January 0.8"

Snow: 9.4"

9.2 days with precipitation

February 0.9"

Snow: 8.1"

10.1 days with precipitation

March 0.7"

Snow: 8.8"

8.6 days with precipitation

April 0.8"

Snow: 6.0"

9.5 days with precipitation

May 1.2"

Snow: 1.9"

12.0 days with precipitation

June 1.8"

12.9 days with precipitation

July 2.6"

16.2 days with precipitation

August 3.4"

18.1 days with precipitation

September 2.9"

Snow: 0.5"

16.6 days with precipitation

October 1.8"

Snow: 3.9"

13.3 days with precipitation

November 1.8"

Snow: 13.2"

13.7 days with precipitation

December 1.1"

Snow: 12.2"

10.9 days with precipitation

Frost Dates & Growing Season

First Fall Freeze

September 22

50% probability date

Last Spring Freeze

May 21

50% probability date

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

12,228

Higher = more heating needed

Cooling Degree Days

6

Higher = more cooling needed

Warmest Month

July

Coldest Month

January

Humidity & Wind

Monthly averages from hourly observations

Month Humidity Wind (mph)
January 81% 13.9
February 81% 13.4
March 80% 11.9
April 75% 10.8
May 68% 10.2
June 76% 9.3
July 83% 9.9
August 84% 10.2
September 84% 10.7
October 86% 11.5
November 85% 12.3
December 83% 12.9

Related Data

Climate Guides

Climate Insight: Bethel, AK

The NOAA 1991–2020 climate normals describe Bethel, Alaska as a location with an annual average temperature of 31°F, ranging from a mean daily high of 38°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 USW00026615, 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. Bethel receives roughly 19.7 inches of precipitation each year, with 64.0 inches typically falling as snow. Growing-season length varies with elevation and microclimate, with the last spring freeze near May 21 and the first fall freeze near September 22. For energy use, 12,228 heating degree days and 6 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Bethel scores 37/100 (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 Bethel, AK?
The average annual temperature in Bethel, Alaska is 31°F. The warmest month averages 64°F (18°C) and the coldest averages 1°F (-17°C).
How much rain does Bethel get?
Bethel receives 19.7 inches of precipitation annually, including 64.0 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Bethel?
Bethel has a climate comfort score of 37/100 (Below Average). This score considers temperature mildness, humidity, precipitation, and extreme weather frequency.
When is the growing season in Bethel?
Growing season data is not available for Bethel.
How much energy does heating and cooling require in Bethel?
Bethel has 12,228 heating degree days and 6 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 Bethel 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 USW00026615. 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: USW00026615. For informational purposes only.

Related

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