This report describes the historical weather record at the Adler-Sochi International Airport (Sochi, Russian Federation) during 1975. This station has records back to January 1959.
Sochi has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by oceans and seas (57%), forests (17%), croplands (15%), and grasslands (11%)
Daylight saving time (DST) was not observed at Sochi during 1975.
1975 was not a leap year, so it has 365 days and no February 29th. The first leap year before 1975 was 1972 and the first after was 1976.
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 1975 they occurred on:
|Spring Equinox||Friday, 21 March 1975.|
|Summer Solstice||Sunday, 22 June 1975.|
|Fall Equinox||Tuesday, 23 September 1975.|
|Winter Solstice||Monday, 22 December 1975.|
The hottest day of 1975 was June 4, with a high temperature of 90°F. For reference, on that day the average high temperature is 74°F and the high temperature exceeds 81°F only one day in ten. The hottest month of 1975 was July with an average daily high temperature of 81°F.
Relative to the average, the hottest day was April 9. The high temperature that day was 82°F, compared to the average of 60°F, a difference of 22°F. In relative terms the warmest month was April, with an average high temperature of 66°F, compared to an typical value of 61°F.
The longest warm spell was from March 29 to April 13, constituting 16 consecutive days with warmer than average high temperatures. The month of June had the largest fraction of warmer than average days with 77% days with higher than average high temperatures.
The coldest day of 1975 was January 20, with a low temperature of 28°F. For reference, on that day the average low temperature is 36°F and the low temperature drops below 30°F only one day in ten. The coldest month of 1975 was February with an average daily low temperature of 36°F.
Relative to the average, the coldest day was August 16. The low temperature that day was 55°F, compared to the average of 69°F, a difference of 13°F. In relative terms the coldest month was December, with an average low temperature of 36°F, compared to an typical value of 40°F.
The longest cold spell was from October 28 to November 16, constituting 20 consecutive days with cooler than average low temperatures. The month of October had the largest fraction of cooler than average days with 81% days with lower than average low temperatures.
The clearest month of 1975 was August, with 65% of days being more clear than cloudy. The longest spell of clear weather was from August 25 to September 2, constituting 9 consecutive days that were clearer than they were cloudy.
The cloudiest month of 1975 was October, with 42% of days being more cloudy than clear. The longest spell of cloudy weather was from October 7 to October 13, constituting 7 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 1975 with the most precipitation observations was January 5. There were 8 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 68 hourly present weather reports involving some form of precipitation.
As determined by the present weather reports, the longest dry spell was from May 23 to June 8, constituting 17 consecutive days with no observed precipitation. The month with the largest fraction of days without observed precipitation was August, with 81% 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 61% 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 1975 with the largest number of those reports was January, with a total of 67 reports. The day with the largest number of those reports was January 5, with a total of 8 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 1975 was on December 12; the last was on March 2. The month of 1975 with the largest number of those reports was December, with a total of 6 reports. The day with the largest number of those reports was February 12, with a total of 2 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 1975 was March with an average daily low humidity of 51%, and the most humid month was May with an average daily low humidity of 72%.
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 1975, January had 31 dry days, no comfortable days, and no humid days; April had 9 dry days, 21 comfortable days, and no humid days; July had no dry days, 3 comfortable days, and 28 humid days; and October had 2 dry days, 29 comfortable days, and no humid days.
The highest sustained wind speed was 29 mph, occurring on March 14; the highest daily mean wind speed was 16 mph (December 11);
The windiest month was December, with an average wind speed of 10 mph. The least windy month was May, with an average wind speed of 4 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 1975 with the lowest average visibility was April 20, with an average visibility of 1.2 mi. The month with the lowest average visibility was April, with an average visibility of 12.2 mi. With an average visibility of 15.9 mi, the month of August 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 1975 with the lowest average cloud ceiling was January 20, with an average cloud ceiling of 295'. The month with the lowest average cloud ceiling was October, with an average cloud ceiling of 6999'. The month of July has the highest average cloud ceiling, with an average cloud ceiling of 10080'.