Average Weather In October For Las Vegas, Nevada, USA

Location

This report describes the typical weather at the North Las Vegas Airport (Las Vegas, Nevada, United States) weather station over the course of an average October. It is based on the historical records from 1999 to 2012. Earlier records are either unavailable or unreliable.

Las Vegas, Nevada has a hot desert climate. The area within 25 mi of this station is covered by shrublands (94%) and built-up areas (4%).

Temperature

The month of October is characterized by rapidly falling daily high temperatures, with daily highs decreasing from 87°F to 73°F over the course of the month, exceeding 95°F or dropping below 63°F only one day in ten.

Daily High and Low Temperature in October

The daily average low (blue) and high (red) temperature with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
Daily low temperatures range from 53°F to 65°F, falling below 47°F or exceeding 71°F only one day in ten.

Fraction of Time Spent in Various Temperature Bands in October

The average fraction of time spent in various temperature bands: frigid (below 15°F), freezing (15°F to 32°F), cold (32°F to 50°F), cool (50°F to 65°F), comfortable (65°F to 75°F), warm (75°F to 85°F), hot (85°F to 100°F) and sweltering (above 100°F).

Sun

Over the course of October, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 1:06 hours, implying an average day-over-day decrease of 2.1 minutes.

The shortest day of the month is October 31 with 10:41 hours of daylight; the longest day is October 1 with 11:47 hours of daylight.

Daily Hours of Daylight and Twilight in October

The number of hours during which the Sun is visible (black line), with various degrees of daylight, twilight, and night, indicated by the color bands. From bottom (most yellow) to top (most gray): full daylight, solar twilight (Sun is visible but less than 6° from the horizon), civil twilight (Sun is not visible but is less than 6° below the horizon), nautical twilight (Sun is between 6° and 12° below the horizon), astronomical twilight (Sun is between 12° and 18° below the horizon), and full night.

The earliest sunrise is at 6:36am on October 1; the latest sunset is at 6:23pm on October 1; the latest sunrise is at 7:04am on October 31; the earliest sunset is at 5:45pm on October 31.

Daylight savings time is observed in 2012 but it neither starts nor ends in October, so the entire month is in daylight time.

Daily Sunrise & Sunset with Twilight and Daylight Savings Time in October

The solar day over the course of the year 2012 . From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (solar, civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight savings time are indicated by the "DST" labels.

Clouds

The median cloud cover is 0% (clear) and does not vary substantially over the course of the month.

Median Cloud Cover in October

The median daily cloud cover (black line) with percentile bands (inner band from 40th to 60th percentile, outer band from 25th to 75th percentile).

On October 16, a representative day, the sky is clear or mostly clear 90% of the time, partly cloudy 2% of the time, and mostly cloudy or overcast 6% of the time.

Cloud Cover Types in October

The fraction of time spent in each of the five sky cover categories. From top (most blue) to bottom (most gray), the categories are clear, mostly clear, partly cloudy, mostly cloudy, and overcast. Pink indicates missing data. Outside of the United States clear skies are often reported ambiguously, leading them to be lumped in with the missing data.

Precipitation

The average probability that some form of precipitation will be observed in a given day is 7%, with little variation over the course of the month.

Probability of Precipitation at Some Point in the Day in October

The fraction of days in which various types of precipitation are observed. If more than one type of precipitation is reported in a given day, the more severe precipitation is counted. For example, if light rain is observed in the same day as a thunderstorm, that day counts towards the thunderstorm totals. The order of severity is from the top down in this graph, with the most severe at the bottom.

Throughout October, the most common forms of precipitation are light rain, thunderstorms, and moderate rain.

Light rain is the most severe precipitation observed during 50% of those days with precipitation. It is most likely around October 3, when it is observed during 4% of all days.

Thunderstorms are the most severe precipitation observed during 26% of those days with precipitation. They are most likely around October 1, when it is observed during 3% of all days.

Moderate rain is the most severe precipitation observed during 21% of those days with precipitation. It is most likely around October 31, when it is observed during 2% of all days.

Types of Precipitation Throughout October

Relative frequency of various types of precipitation over the course of a typical October.

Snow

Either snow is exceptionally unlikely to fall at this location in October or this station does not reliably report precipitation types.

Humidity

The relative humidity typically ranges from 15% (dry) to 49% (comfortable) over the course of a typical October, rarely dropping below 8% (very dry), or exceeding 74% (humid).

The air is driest around October 1, at which time the relative humidity drops below 19% (dry) three days out of four; it is most humid around October 31, rising above 36% (comfortable) three days out of four.

Relative Humidity in October

The average daily high (blue) and low (brown) relative humidity with percentile bands (inner bands from 25th to 75th percentile, outer bands from 10th to 90th percentile).

Dew Point

Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.

Over the course of a typical October, the dew point typically varies from 24°F (dry) to 42°F (dry) and is rarely below 10°F (dry) or above 54°F (very comfortable).

Dew Point in October

The daily average low (blue) and high (red) dew point with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Wind

Over the course of October typical wind speeds vary from 0 mph to 14 mph (calm to moderate breeze), rarely exceeding 22 mph (fresh breeze).

The highest average wind speed of 7 mph (light breeze) occurs around October 1, at which time the average daily maximum wind speed is 14 mph (moderate breeze).

The lowest average wind speed of 6 mph (light breeze) occurs around October 31, at which time the average daily maximum wind speed is 12 mph (gentle breeze).

Wind Speed in October

The average daily minimum (red), maximum (green), and average (black) wind speed with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
The wind is most often out of the north west (16% of the time), north (11% of the time), and south (11% of the time). The wind is least often out of the north east (3% of the time).

Wind Directions in October

The fraction of time spent with the wind blowing from the various directions over the entire year. Values do not sum to 100% because the wind direction is undefined when the wind speed is zero.

Fraction of Time Spent with Various Wind Directions in October

The fraction of time spent with the wind blowing from the various directions on a daily basis. Stacked values do not always sum to 100% because the wind direction is undefined when the wind speed is zero.