Fall Weather in Black Rock New Mexico, United States
Daily high temperatures decrease by 31°F, from 81°F to 50°F, rarely falling below 38°F or exceeding 86°F.
Daily low temperatures decrease by 31°F, from 52°F to 21°F, rarely falling below 10°F or exceeding 58°F.
For reference, on July 4, the hottest day of the year, temperatures in Black Rock typically range from 55°F to 87°F, while on January 8, the coldest day of the year, they range from 18°F to 44°F.
Average High and Low Temperature in the Fall in Black Rock
The figure below shows you a compact characterization of the hourly average fall temperatures. The horizontal axis is the day, 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 the Fall in Black Rock
The fall in Black Rock experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 25% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 19% on September 29.
The clearest day of the fall is September 29, with clear, mostly clear, or partly cloudy conditions 81% of the time.
For reference, on July 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 41%, while on September 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 81%.
Cloud Cover Categories in the Fall in Black Rock
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Black Rock, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 24% and ending it at 9%.
For reference, the year's highest daily chance of a wet day is 34% on August 5, and its lowest chance is 4% on June 8.
Over the course of the fall in Black Rock, the chance of a day with only rain decreases from 24% to 6%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 1% throughout.
Probability of Precipitation in the Fall in Black Rock
To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during the fall in Black Rock is decreasing, starting the season at 1.2 inches, when it rarely exceeds 2.2 inches or falls below 0.4 inches, and ending the season at 0.4 inches, when it rarely exceeds 0.9 inches.
Average Monthly Rainfall in the Fall in Black Rock
Over the course of the fall in Black Rock, the length of the day is very rapidly decreasing. From the start to the end of the season, the length of the day decreases by 2 hours, 54 minutes, implying an average daily decrease of 1 minute, 56 seconds, and weekly decrease of 13 minutes, 34 seconds.
The shortest day of the fall is November 30, with 9 hours, 59 minutes of daylight and the longest day is September 1, with 12 hours, 53 minutes of daylight.
Hours of Daylight and Twilight in the Fall in Black Rock
The latest sunrise of the fall in Black Rock is 7:41 AM on November 6 and the earliest sunrise is 59 minutes earlier at 6:42 AM on November 7.
The latest sunset is 7:41 PM on September 1 and the earliest sunset is 2 hours, 38 minutes earlier at 5:03 PM on November 30.
Daylight saving time (DST) ends at 1:00 AM on November 7, 2021, shifting sunrise and sunset to be an hour earlier.
For reference, on June 21, the longest day of the year, the Sun rises at 6:01 AM and sets 14 hours, 31 minutes later, at 8:32 PM, while on December 21, the shortest day of the year, it rises at 7:19 AM and sets 9 hours, 48 minutes later, at 5:07 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in the Fall in Black Rock
The figure below presents a compact representation of key lunar data for the fall of 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.
Moon Rise, Set & Phases in the Fall in Black Rock
The chance that a given day will be muggy in Black Rock is essentially constant during the fall, remaining around 0% throughout.
Humidity Comfort Levels in the Fall in Black Rock
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Black Rock is increasing during the fall, increasing from 7.2 miles per hour to 9.0 miles per hour over the course of the season.
For reference, on April 11, the windiest day of the year, the daily average wind speed is 11.9 miles per hour, while on August 15, the calmest day of the year, the daily average wind speed is 6.6 miles per hour.
The highest daily average wind speed during the fall is 9.3 miles per hour on November 16.
Average Wind Speed in the Fall in Black Rock
The hourly average wind direction in Black Rock throughout the fall is predominantly from the west, with a peak proportion of 42% on November 29.
Wind Direction in the Fall in Black Rock
The growing season in Black Rock typically lasts for 4.7 months (143 days), from around May 15 to around October 5, rarely starting before April 24 or after June 8, and rarely ending before September 17 or after October 22.
During the fall in Black Rock, the chance that a given day is within the growing season is very rapidly decreasing falling from 99% to 0% over the course of the season.
Time Spent in Various Temperature Bands and the Growing Season in the Fall in Black Rock
The average accumulated growing degree days in Black Rock are rapidly increasing during the fall, increasing by 612°F, from 2,371°F to 2,983°F, over the course of the season.
Growing Degree Days in the Fall in Black Rock
The average daily incident shortwave solar energy in Black Rock is very rapidly decreasing during the fall, falling by 2.9 kWh, from 6.3 kWh to 3.4 kWh, over the course of the season.
Average Daily Incident Shortwave Solar Energy in the Fall in Black Rock
For the purposes of this report, the geographical coordinates of Black Rock are 35.088 deg latitude, -108.791 deg longitude, and 6,450 ft elevation.
The topography within 2 miles of Black Rock contains significant variations in elevation, with a maximum elevation change of 558 feet and an average elevation above sea level of 6,451 feet. Within 10 miles contains significant variations in elevation (1,270 feet). Within 50 miles contains very significant variations in elevation (3,793 feet).
The area within 2 miles of Black Rock is covered by shrubs (95%), within 10 miles by shrubs (85%), and within 50 miles by shrubs (79%) and trees (16%).
This report illustrates the typical weather in Black Rock, 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 Black Rock.
For each station, the records are corrected for the elevation difference between that station and Black Rock 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 Black Rock is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Black Rock and a given station.
The stations contributing to this reconstruction are: Gallup Municipal Airport (KGUP, 54%, 47 kilometers, north); Grants-Milan Municipal Airport (KGNT, 24%, 81 kilometers, east); and Saint Johns Industrial Air Park (KSJN, 22%, 83 kilometers, southwest).
Time zones for airports and weather stations are provided by AskGeo.com .