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Anchorage Merrill Fld, AK Climate

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

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

Anchorage Merrill Fld, Alaska has an average annual temperature of 38°F and a climate comfort score of 47/100 (Moderate). Annual precipitation totals 14.2". Based on NOAA 30-year normals (1991–2020).

Avg Temperature

38°F (3°C)

Avg High

45°F

Avg Low

30°F

Annual Precip

14.2"

Comfort Score

47/100

Moderate

Climate Comfort Score

47/100

Moderate

Avg Annual Temperature

38°F

30-year mean (NOAA NCEI)

Annual Precipitation

14.2"

Liquid-equivalent total

Comfort score vs national 100-point ceiling (Anchorage Merrill Fld) 47.0%
National median (≈55)

PlainClimate composite — temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Anchorage Merrill Fld area.

Warming context for Anchorage Merrill Fld

Methodology

How the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Anchorage Merrill Fld 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 23°F (-5°C) 8°F (-13°C) 15°F (-9°C)
February 28°F (-2°C) 12°F (-11°C) 20°F (-7°C)
March 34°F (1°C) 17°F (-8°C) 26°F (-4°C)
April 47°F (8°C) 30°F (-1°C) 39°F (4°C)
May 58°F (15°C) 41°F (5°C) 50°F (10°C)
June 66°F (19°C) 50°F (10°C) 58°F (14°C)
July 68°F (20°C) 54°F (12°C) 61°F (16°C)
August 66°F (19°C) 51°F (11°C) 59°F (15°C)
September 57°F (14°C) 43°F (6°C) 50°F (10°C)
October 43°F (6°C) 30°F (-1°C) 36°F (2°C)
November 29°F (-2°C) 16°F (-9°C) 23°F (-5°C)
December 25°F (-4°C) 11°F (-11°C) 18°F (-8°C)

Monthly Precipitation

Average monthly rainfall

January 0.5"

6.0 days with precipitation

February 0.7"

6.4 days with precipitation

March 0.5"

6.0 days with precipitation

April 0.3"

4.5 days with precipitation

May 0.6"

6.5 days with precipitation

June 1.0"

9.9 days with precipitation

July 1.7"

12.4 days with precipitation

August 2.5"

15.6 days with precipitation

September 3.0"

15.0 days with precipitation

October 1.6"

11.4 days with precipitation

November 0.9"

7.4 days with precipitation

December 0.9"

8.1 days with precipitation

Frost Dates & Growing Season

First Fall Freeze

September 29

50% probability date

Last Spring Freeze

May 1

50% probability date

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

9,902

Higher = more heating needed

Cooling Degree Days

20

Higher = more cooling needed

Warmest Month

July

Coldest Month

January

Humidity & Wind

Monthly averages from hourly observations

Month Humidity Wind (mph)
January 79% 3.1
February 72% 3.4
March 64% 3.8
April 57% 4.6
May 58% 4.9
June 66% 4.6
July 72% 4.0
August 74% 3.6
September 73% 3.6
October 77% 3.3
November 79% 3.2
December 80% 2.7

Related Data

Climate Guides

Climate Insight: Anchorage Merrill Fld, AK

The NOAA 1991–2020 climate normals describe Anchorage Merrill Fld, Alaska as a location with an annual average temperature of 38°F, ranging from a mean daily high of 45°F to a mean daily low of 30°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USW00026409, 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. Anchorage Merrill Fld receives roughly 14.2 inches of precipitation each year, predominantly as rainfall. Growing-season length varies with elevation and microclimate, with the last spring freeze near May 1 and the first fall freeze near September 29. For energy use, 9,902 heating degree days and 20 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Anchorage Merrill Fld scores 47/100 (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 Anchorage Merrill Fld, AK?
The average annual temperature in Anchorage Merrill Fld, Alaska is 38°F. The warmest month averages 68°F (20°C) and the coldest averages 8°F (-13°C).
How much rain does Anchorage Merrill Fld get?
Anchorage Merrill Fld receives 14.2 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Anchorage Merrill Fld?
Anchorage Merrill Fld has a climate comfort score of 47/100 (Moderate). This score considers temperature mildness, humidity, precipitation, and extreme weather frequency.
When is the growing season in Anchorage Merrill Fld?
Growing season data is not available for Anchorage Merrill Fld.
How much energy does heating and cooling require in Anchorage Merrill Fld?
Anchorage Merrill Fld has 9,902 heating degree days and 20 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 Anchorage Merrill Fld 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 USW00026409. 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: USW00026409. For informational purposes only.

Related

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