This report describes the historical weather record at the McCarran International Airport (Las Vegas, Nevada, United States) during 1960. This station has records back to December 1948.
Las Vegas, Nevada has a hot desert climate. The area within 25 mi of this station is covered by shrublands (93%), built-up areas (4%), and lakes and rivers (2%)
Daylight saving time (DST) was observed at Las Vegas, Nevada during 1960. There were two time changes during 1960:
1960 was a leap year and thus has 366 days rather than the normal 365. Leap years occur every fourth year and the extra day is always February 29th. In 1960 February 29th falls on a Monday.
The summer and winter solstices and the spring and fall equinoxes mark the passing of the seasons. They fall on nearly the same day each year, with differences of a day or two depending on the year. In 1960 they occurred on:
|Spring Equinox||Sunday, 20 March 1960.|
|Summer Solstice||Tuesday, 21 June 1960.|
|Fall Equinox||Friday, 23 September 1960.|
|Winter Solstice||Wednesday, 21 December 1960.|
The hottest day of 1960 was July 17, with a high temperature of 113°F. For reference, on that day the average high temperature is 104°F and the high temperature exceeds 110°F only one day in ten. The hottest month of 1960 was July with an average daily high temperature of 105°F.
Relative to the average, the hottest day was April 6. The high temperature that day was 93°F, compared to the average of 75°F, a difference of 18°F. In relative terms the warmest month was June, with an average high temperature of 102°F, compared to an typical value of 98°F.
The longest warm spell was from June 11 to June 25, constituting 15 consecutive days with warmer than average high temperatures. The month of June had the largest fraction of warmer than average days with 73% days with higher than average high temperatures.
The coldest day of 1960 was January 2, with a low temperature of 21°F. For reference, on that day the average low temperature is 38°F and the low temperature drops below 31°F only one day in ten. The coldest month of 1960 was January with an average daily low temperature of 32°F.
Relative to the average, the coldest day was April 25. The low temperature that day was 39°F, compared to the average of 59°F, a difference of 20°F. In relative terms the coldest month was January, with an average low temperature of 32°F, compared to an typical value of 39°F.
The longest cold spell was from November 20 to December 28, constituting 39 consecutive days with cooler than average low temperatures. The month of December had the largest fraction of cooler than average days with 94% days with lower than average low temperatures.
The clearest month of 1960 was August, with 97% of days being more clear than cloudy. The longest spell of clear weather was from July 31 to August 31, constituting 32 consecutive days that were clearer than they were cloudy.
The cloudiest month of 1960 was January, with 6% of days being more cloudy than clear.
This station provides hourly reports of significant weather events at and around the station, but does not report the quantity of precipitation at the station itself. This is common for weather stations located outside of the United States, and for a small subset of stations in the United States that are located at lesser used and smaller airports.
This station reports when significant weather events (including precipitation) are visually observed at or near the station. Such events do not always correspond to measured quantities of liquid equivalent precipitation, such as when the event is near by not at the station, or in the case of solid precipitation that does not melt in the collection basin.
The day in 1960 with the most precipitation observations was November 5. There were 13 hourly weather reports that day (out of a maximum of 24) in which some form of precipitation was observated at or near the station. The month with the most precipitation observations was February, with 36 hourly present weather reports involving some form of precipitation.
As determined by the present weather reports, the longest dry spell was from March 2 to April 27, constituting 57 consecutive days with no observed precipitation. The month with the largest fraction of days without observed precipitation was March, with 97% of days reporting no observed precipitation at all.
The month with the largest fraction of days with at least some observed precipitation was February, with 24% of days reporting some observed precipitation.
In this section we consider only those weather reports that indicate liquid precipitation. For the purposes of this analysis, we include thunderstorms even though some thunderstorms are not accompanied by liquid precipitation.
The month of 1960 with the largest number of those reports was February, with a total of 35 reports. The day with the largest number of those reports was November 5, with a total of 13 reports.
This station reports when snow is observed falling but does not report the quantity of snow that has fallen or the depth of snow on the ground.
In this section we consider hourly weather reports that contain an observation of falling snow. These reports do not necessarily correspond to accumulation.
The first reported snow fall in 1960 was on December 8; the last was on February 19. The month of 1960 with the largest number of those reports was January, with a total of 8 reports. The day with the largest number of those reports was January 15, with a total of 8 reports.
Humidity is an important factor in determining how weather conditions feel to a person experiencing them. Hot and humid days feel even hotter than hot and dry days because the high level of water content in humid air discourages the evaporation of sweat from a person's skin.
When reading the graph below, keep in mind that the hottest part of the day tends to be the least humid, so the daily low (brown) traces are more relevant for understanding daytime comfort than the daily high (blue) traces, which typically occur during the night. Applying that observation, the least humid month of 1960 was June with an average daily low humidity of 6%, and the most humid month was January with an average daily low humidity of 33%.
But it is important to keep in mind that humidity does not tell the whole picture and the dew point is often a better measure of how comfortable a person will find a given set of weather conditions. Please see the next section for continued discussion of this point.
Dew point is the temperature below which water vapor will condense into liquid water. It is therefore also related to the rate of evaporation of liquid water. Since the evaporation of sweat is an important cooling mechanism for the human body, the dew point is an important measurement for understanding how dry, comfortable, or humid a given set of weather conditions will feel.
Generally speaking, dew points below 50°F will feel a bit dry to some people, but comfortable to people accustomed to dry conditions; dew points from 50°F to 68°F are fairly comfortable to most people, and dew points above 68°F are increasingly uncomfortable, becoming oppressive around 77°F.
To take some examples, and basing our categorization on the daily high dew point in 1960, January had 31 dry days, no comfortable days, and no humid days; April had 30 dry days, no comfortable days, and no humid days; July had 20 dry days, 11 comfortable days, and no humid days; and October had 27 dry days, 4 comfortable days, and no humid days.
The highest sustained wind speed was 40 mph, occurring on March 30; the highest daily mean wind speed was 25 mph (May 21);
The windiest month was May, with an average wind speed of 12 mph. The least windy month was January, with an average wind speed of 7 mph.
Visibility is the maximum distance at which a given reference object or light can be clearly discerned. In the United States, visibilities that are greater than or equal to 10 miles are typically reported as 10 miles.
The day of 1960 with the lowest average visibility was January 15, with an average visibility of 6.9 mi. The month with the lowest average visibility was January, with an average visibility of 25.2 mi. With an average visibility of 29.6 mi, the month of April had the highest average visibility.
This station did not reliably report the cloud ceiling during 1960.