This report describes the historical weather record at the Fort Worth Naval Air Station (Fort Worth, Texas, United States) during 1983. This station has records back to December 1947.
Fort Worth, Texas has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by grasslands (89%) and built-up areas (9%)
Daylight saving time (DST) was observed at Fort Worth, Texas during 1983. There were two time changes during 1983:
1983 was not a leap year, so it has 365 days and no February 29th. The first leap year before 1983 was 1980 and the first after was 1984.
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 1983 they occurred on:
|Spring Equinox||Monday, 21 March 1983.|
|Summer Solstice||Tuesday, 21 June 1983.|
|Fall Equinox||Friday, 23 September 1983.|
|Winter Solstice||Thursday, 22 December 1983.|
The hottest day of 1983 was August 12, with a high temperature of 101°F. For reference, on that day the average high temperature is 96°F and the high temperature exceeds 102°F only one day in ten. The hottest month of 1983 was August with an average daily high temperature of 95°F.
Relative to the average, the hottest day was January 11. The high temperature that day was 74°F, compared to the average of 55°F, a difference of 19°F. In relative terms the warmest month was November, with an average high temperature of 69°F, compared to an typical value of 67°F.
The longest warm spell was from October 27 to November 5, constituting 10 consecutive days with warmer than average high temperatures. The month of October had the largest fraction of warmer than average days with 65% days with higher than average high temperatures.
The coldest day of 1983 was December 22, with a low temperature of 7°F. For reference, on that day the average low temperature is 38°F and the low temperature drops below 27°F only one day in ten. The coldest month of 1983 was December with an average daily low temperature of 28°F.
Relative to the average, the coldest day was December 22. The low temperature that day was 7°F, compared to the average of 38°F, a difference of 30°F. In relative terms the coldest month was December, with an average low temperature of 28°F, compared to an typical value of 39°F.
The longest cold spell was from March 16 to April 12, constituting 28 consecutive days with cooler than average low temperatures. The month of June had the largest fraction of cooler than average days with 93% days with lower than average low temperatures.
The longest freezing spell was from December 21 to December 27, constituting 7 consecutive days with temperatures strictly below freezing.
The clearest month of 1983 was April, with 37% of days being more clear than cloudy. The longest spell of clear weather was from July 23 to July 30, constituting 8 consecutive days that were clearer than they were cloudy.
The cloudiest month of 1983 was February, with 64% of days being more cloudy than clear. The longest spell of cloudy weather was from December 16 to December 29, constituting 14 consecutive days that were cloudier than they were 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 1983 with the most precipitation observations was December 21. There were 18 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 January, with 76 hourly present weather reports involving some form of precipitation.
As determined by the present weather reports, the longest dry spell was from July 18 to August 7, constituting 21 consecutive days with no observed precipitation. The month with the largest fraction of days without observed precipitation was September, with 90% of days reporting no observed precipitation at all.
The month with the largest fraction of days with at least some observed precipitation was May, with 45% 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 1983 with the largest number of those reports was January, with a total of 66 reports. The day with the largest number of those reports was January 1, with a total of 16 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 1983 was on December 15; the last was on February 4. The month of 1983 with the largest number of those reports was December, with a total of 28 reports. The day with the largest number of those reports was January 22, with a total of 10 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 1983 was April with an average daily low humidity of 35%, and the most humid month was January with an average daily low humidity of 55%.
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 1983, January had 28 dry days, 3 comfortable days, and no humid days; April had 18 dry days, 10 comfortable days, and 2 humid days; July had no dry days, 2 comfortable days, and 29 humid days; and October had 4 dry days, 24 comfortable days, and 3 humid days.
The highest sustained wind speed was 34 mph, occurring on April 1; the highest daily mean wind speed was 22 mph (April 1); and the highest wind gust speed was 51 mph (April 1).
The windiest month was April, with an average wind speed of 11 mph. The least windy month was August, with an average wind speed of 6 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 1983 with the lowest average visibility was December 2, with an average visibility of 2.1 mi. The month with the lowest average visibility was July, with an average visibility of 7.5 mi. With an average visibility of 10.2 mi, the month of January had the highest average visibility.
The cloud ceiling is the altitude of the lowest layer of clouds that are at categorized as broken (mostly cloudy) or overcast (cloudy). If no such cloud layer exists then the ceiling is unlimited and no value is reported.
The day of 1983 with the lowest average cloud ceiling was February 13, with an average cloud ceiling of 49'. The month with the lowest average cloud ceiling was January, with an average cloud ceiling of 5641'. The month of August has the highest average cloud ceiling, with an average cloud ceiling of 18140'.