Average Weather in Los Alamos California, United States
In Los Alamos, the summers are warm and clear and the winters are cold and partly cloudy. Over the course of the year, the temperature typically varies from 39°F to 78°F and is rarely below 31°F or above 86°F.
The warm season lasts for 3.8 months, from June 21 to October 14, with an average daily high temperature above 75°F. The hottest day of the year is August 24, with an average high of 78°F and low of 53°F.
The cool season lasts for 3.6 months, from November 30 to March 17, with an average daily high temperature below 65°F. The coldest day of the year is January 31, with an average low of 39°F and high of 63°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 Los Alamos, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Los Alamos begins around May 4 and lasts for 5.9 months, ending around November 1. On August 9, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 92% of the time, and overcast or mostly cloudy 8% of the time.
The cloudier part of the year begins around November 1 and lasts for 6.1 months, ending around May 4. On February 23, the cloudiest day of the year, the sky is overcast or mostly cloudy 45% of the time, and clear, mostly clear, or partly cloudy 55% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Los Alamos varies throughout the year.
The wetter season lasts 4.7 months, from November 14 to April 5, with a greater than 11% chance of a given day being a wet day. The chance of a wet day peaks at 22% on February 20.
The drier season lasts 7.3 months, from April 5 to November 14. The smallest chance of a wet day is 0% on July 28.
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 throughout the year is rain alone, with a peak probability of 22% on February 20.
Daily Chance of Precipitation
The length of the day in Los Alamos varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 49 minutes of daylight; the longest day is June 21, with 14 hours, 29 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:47 AM on June 12, and the latest sunrise is 1 hour, 38 minutes later at 7:24 AM on November 4. The earliest sunset is at 4:49 PM on December 5, and the latest sunset is 3 hours, 29 minutes later at 8:18 PM on June 28.
Daylight saving time (DST) is observed in Los Alamos 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
The perceived humidity level in Los Alamos, 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
The average hourly wind speed in Los Alamos experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.7 months, from February 4 to June 25, with average wind speeds of more than 4.8 miles per hour. The windiest day of the year is May 9, with an average hourly wind speed of 5.5 miles per hour.
The calmer time of year lasts for 7.2 months, from June 25 to February 4. The calmest day of the year is August 10, with an average hourly wind speed of 4.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Los Alamos varies throughout the year.
The wind is most often from the west for 3.0 months, from May 31 to August 31, with a peak percentage of 56% on July 20. The wind is most often from the north for 9.0 months, from August 31 to May 31, with a peak percentage of 44% on January 1.
Los Alamos 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 some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.6 months, from July 22 to November 10, with an average temperature above 60°F. The day of the year with the warmest water is September 23, with an average temperature of 61°F.
The time of year with cooler water lasts for 3.4 months, from February 24 to June 5, with an average temperature below 56°F. The day of the year with the coolest water is April 17, with an average temperature of 55°F.
Average Water Temperature
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 3.9 months, from April 28 to August 24, with an average daily incident shortwave energy per square meter above 7.4 kWh. The brightest day of the year is June 22, with an average of 8.6 kWh.
The darker period of the year lasts for 3.3 months, from November 5 to February 14, with an average daily incident shortwave energy per square meter below 4.0 kWh. The darkest day of the year is December 24, with an average of 2.8 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Los Alamos are 34.744 deg latitude, -120.278 deg longitude, and 830 ft elevation.
The topography within 2 miles of Los Alamos contains very significant variations in elevation, with a maximum elevation change of 1,073 feet and an average elevation above sea level of 765 feet. Within 10 miles contains very significant variations in elevation (2,372 feet). Within 50 miles contains large variations in elevation (6,814 feet).
The area within 2 miles of Los Alamos is covered by grassland (78%) and cropland (16%), within 10 miles by grassland (70%) and shrubs (18%), and within 50 miles by water (43%) and shrubs (25%).
This report illustrates the typical weather in Los Alamos, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Los Alamos.
For each station, the records are corrected for the elevation difference between that station and Los Alamos 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 Los Alamos is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Los Alamos and a given station.
The stations contributing to this reconstruction are: Lompoc Airport (30%, 19 kilometers, southwest); Santa Maria Airport (30%, 23 kilometers, northwest); and Santa Ynez Airport (40%, 24 kilometers, southeast).
Time zones for aiports and weather stations are provided by AskGeo.com .