This report describes the historical weather record at the Northwest Alabama Regional Airport (Muscle Shoals, Alabama, United States) during 1948. This station has records back to December 1948.
Muscle Shoals, Alabama has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by forests (76%), croplands (16%), lakes and rivers (4%), and built-up areas (2%)
Daylight saving time (DST) was observed at Muscle Shoals, Alabama during 1948. There were two time changes during 1948:
1948 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 1948 February 29th falls on a Sunday.
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 1948 they occurred on:
|Spring Equinox||Saturday, 20 March 1948.|
|Summer Solstice||Monday, 21 June 1948.|
|Fall Equinox||Thursday, 23 September 1948.|
|Winter Solstice||Tuesday, 21 December 1948.|
The hottest day of 1948 was December 13, with a high temperature of 73°F. For reference, on that day the average high temperature is 53°F and the high temperature exceeds 66°F only one day in ten. The hottest month of 1948 was December with an average daily high temperature of 55°F.
Relative to the average, the hottest day was December 15. The high temperature that day was 73°F, compared to the average of 52°F, a difference of 21°F. In relative terms the warmest month was December, with an average high temperature of 55°F, compared to an typical value of 52°F.
The longest warm spell was from December 12 to December 19, constituting 8 consecutive days with warmer than average high temperatures. The month of December had the largest fraction of warmer than average days with 58% days with higher than average high temperatures.
The coldest day of 1948 was December 26, with a low temperature of 20°F. For reference, on that day the average low temperature is 33°F and the low temperature drops below 20°F only one day in ten. The coldest month of 1948 was December with an average daily low temperature of 38°F.
Relative to the average, the coldest day was December 26. The low temperature that day was 20°F, compared to the average of 33°F, a difference of 13°F. In relative terms the coldest month was December, with an average low temperature of 38°F, compared to an typical value of 35°F.
The month of December had the largest fraction of cooler than average days with 39% days with lower than average low temperatures.
The clearest month of 1948 was December, with 23% of days being more clear than cloudy.
The cloudiest month of 1948 was December, with 45% 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 1948 with the most precipitation observations was December 18. There were 15 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 December, with 75 hourly present weather reports involving some form of precipitation.
As determined by the present weather reports, the longest dry spell was from December 6 to December 15, constituting 10 consecutive days with no observed precipitation. The month with the largest fraction of days without observed precipitation was December, with 58% of days reporting no observed precipitation at all.
Either snow is exceptionally rare at this location or this station did not reliably report it during 1948.
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 1948 was December with an average daily low humidity of 55%, and the most humid month was November with an average daily low humidity of 100%.
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 1948, January had no dry days, no comfortable days, and no humid days; April had no dry days, no comfortable days, and no humid days; July had no dry days, no comfortable days, and no humid days; and October had no dry days, no comfortable days, and no humid days.
The highest sustained wind speed was 40 mph, occurring on December 29; the highest daily mean wind speed was 21 mph (December 29);
The windiest month was December, with an average wind speed of 10 mph. The least windy month was December, with an average wind speed of 10 mph.
This station did not reliably report the visibility during 1948.
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 1948 with the lowest average cloud ceiling was December 4, with an average cloud ceiling of 12'. The month with the lowest average cloud ceiling was December, with an average cloud ceiling of 2814'. The month of December has the highest average cloud ceiling, with an average cloud ceiling of 2814'.