Average Weather in Nome Alaska, United States
In Nome, the summers are cold; the winters are long, frigid, snowy, and windy; and it is mostly cloudy year round. Over the course of the year, the temperature typically varies from -1°F to 58°F and is rarely below -26°F or above 69°F.
The warm season lasts for 3.6 months, from May 28 to September 17, with an average daily high temperature above 49°F. The hottest day of the year is July 16, with an average high of 58°F and low of 47°F.
The cold season lasts for 4.4 months, from November 19 to March 31, with an average daily high temperature below 22°F. The coldest day of the year is January 19, with an average low of -1°F and high of 12°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Nome, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year in Nome begins around August 5 and lasts for 3.4 months, ending around November 17. On October 6, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 44% of the time, and overcast or mostly cloudy 56% of the time.
The cloudier part of the year begins around November 17 and lasts for 8.6 months, ending around August 5. On January 7, the cloudiest day of the year, the sky is overcast or mostly cloudy 72% of the time, and clear, mostly clear, or partly cloudy 28% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Nome varies throughout the year.
The wetter season lasts 2.6 months, from July 13 to October 2, with a greater than 23% chance of a given day being a wet day. The chance of a wet day peaks at 34% on August 18.
The drier season lasts 9.4 months, from October 2 to July 13. The smallest chance of a wet day is 11% on March 17.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Nome changes throughout the year.
Rain alone is the most common for 6.4 months, from April 23 to November 4. The highest chance of a day with rain alone is 34% on August 18.
Snow alone is the most common for 5.6 months, from November 4 to April 23. The highest chance of a day with snow alone is 15% on January 6.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Nome experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 6.7 months, from April 29 to November 19, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around August 12, with an average total accumulation of 2.8 inches.
The rainless period of the year lasts for 5.3 months, from November 19 to April 29. The least rain falls around March 13, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Nome experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 7.5 months, from October 7 to May 22, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 30, with an average total liquid-equivalent accumulation of 0.9 inches.
The snowless period of the year lasts for 4.5 months, from May 22 to October 7. The least snow falls around July 29, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Nome varies extremely over the course of the year. In 2017, the shortest day is December 21, with 3 hours, 54 minutes of daylight; the longest day is June 20, with 21 hours, 29 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:18 AM on June 20, and the latest sunrise is 7 hours, 45 minutes later at 12:03 PM on December 25. The earliest sunset is at 3:56 PM on December 18, and the latest sunset is 9 hours, 52 minutes later at 1:47 AM on June 20.
Daylight saving time (DST) is observed in Nome during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The perceived humidity level in Nome, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed in Nome experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 7.1 months, from September 7 to April 11, with average wind speeds of more than 6.8 miles per hour. The windiest day of the year is December 29, with an average hourly wind speed of 8.7 miles per hour.
The calmer time of year lasts for 4.9 months, from April 11 to September 7. The calmest day of the year is June 23, with an average hourly wind speed of 5.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Nome varies throughout the year.
The wind is most often from the north for 6.0 days, from January 15 to January 21; for 1.4 weeks, from February 5 to February 15; for 4.0 months, from February 24 to June 23; and for 2.7 months, from August 14 to November 6, with a peak percentage of 49% on March 23. The wind is most often from the east for 2.1 weeks, from January 21 to February 5; for 1.3 weeks, from February 15 to February 24; and for 2.3 months, from November 6 to January 15, with a peak percentage of 44% on February 3. The wind is most often from the south for 1.7 months, from June 23 to August 14, with a peak percentage of 33% on July 11.
Nome is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences significant seasonal variation over the course of the year.
The time of year with warmer water lasts for 2.3 months, from July 10 to September 18, with an average temperature above 47°F. The day of the year with the warmest water is August 15, with an average temperature of 52°F.
The time of year with cooler water lasts for 6.5 months, from November 8 to May 24, with an average temperature below 34°F. The day of the year with the coolest water is January 31, with an average temperature of 30°F.
Average Water Temperature
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 2.7 months, from April 29 to July 21, with an average daily incident shortwave energy per square meter above 4.7 kWh. The brightest day of the year is June 7, with an average of 5.8 kWh.
The darker period of the year lasts for 4.6 months, from October 10 to February 27, with an average daily incident shortwave energy per square meter below 1.2 kWh. The darkest day of the year is December 21, with an average of 0.0 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Nome are 64.501 deg latitude, -165.406 deg longitude, and 26 ft elevation.
The topography within 2 miles of Nome contains only modest variations in elevation, with a maximum elevation change of 144 feet and an average elevation above sea level of 34 feet. Within 10 miles contains only modest variations in elevation (1,722 feet). Within 50 miles contains very significant variations in elevation (4,629 feet).
The area within 2 miles of Nome is covered by water (53%), shrubs (24%), and sparse vegetation (17%), within 10 miles by water (50%) and shrubs (41%), and within 50 miles by water (61%) and shrubs (27%).
This report illustrates the typical weather in Nome, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Nome.
For each station, the records are corrected for the elevation difference between that station and Nome according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Nome is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Nome and a given station.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.