Winter Weather in Longquan China

Daily high temperatures increase by 6°F, from 29°F to 35°F, rarely falling below 9°F or exceeding 46°F. The lowest daily average high temperature is 20°F on January 11.

Daily low temperatures increase by 5°F, from 8°F to 13°F, rarely falling below -12°F or exceeding 24°F. The lowest daily average low temperature is -2°F on January 12.

For reference, on July 12, the hottest day of the year, temperatures in Longquan typically range from 60°F to 80°F, while on January 11, the coldest day of the year, they range from -2°F to 20°F.

The figure below shows you a compact characterization of the hourly average winter temperatures. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Minot Air Force Base, United States (5,947 miles away) and Staples, United States (6,200 miles) are the far-away foreign places with temperatures most similar to Longquan (view comparison).

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The winter in Longquan experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 23% to 35%. The lowest chance of overcast or mostly cloudy conditions is 23% on December 8.

The clearest day of the winter is December 8, with clear, mostly clear, or partly cloudy conditions 77% of the time.

For reference, on June 17, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 43%, while on December 8, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Longquan, the chance of a wet day over the course of the winter is essentially constant, remaining around 1% throughout.

For reference, the year's highest daily chance of a wet day is 38% on July 30, and its lowest chance is 0% on January 22.

Over the course of the winter in Longquan, the length of the day is rapidly increasing. From the start to the end of the season, the length of the day increases by 1 hour, 44 minutes, implying an average daily increase of 1 minute, 10 seconds, and weekly increase of 8 minutes, 12 seconds.

The shortest day of the winter is December 21, with 9 hours, 17 minutes of daylight and the longest day is February 28, with 11 hours, 15 minutes of daylight.

The latest sunrise of the winter in Longquan is 7:48 AM on January 4 and the earliest sunrise is 48 minutes earlier at 7:00 AM on February 28.

The earliest sunset is 4:58 PM on December 7 and the latest sunset is 1 hour, 17 minutes later at 6:15 PM on February 28.

Daylight saving time is not observed in Longquan during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 4:55 AM and sets 15 hours, 3 minutes later, at 7:58 PM, while on December 21, the shortest day of the year, it rises at 7:44 AM and sets 9 hours, 17 minutes later, at 5:02 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for the winter of 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Longquan is essentially constant during the winter, remaining around 0% throughout.

For reference, on July 30, the muggiest day of the year, there are muggy conditions 12% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Longquan is essentially constant during the winter, remaining within 0.5 miles per hour of 9.6 miles per hour throughout.

For reference, on April 19, the windiest day of the year, the daily average wind speed is 11.5 miles per hour, while on August 15, the calmest day of the year, the daily average wind speed is 6.5 miles per hour.

The lowest daily average wind speed during the winter is 9.1 miles per hour on January 19.

The hourly average wind direction in Longquan throughout the winter is predominantly from the west, with a peak proportion of 64% on December 10.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Longquan typically lasts for 4.9 months (150 days), from around May 1 to around September 28, rarely starting before April 15 or after May 17, and rarely ending before September 13 or after October 14.

The winter in Longquan is reliably fully outside of the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Longquan are very rapidly decreasing during the winter, decreasing by 2,345°F, from 2,345°F to 0°F, over the course of the season.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Longquan is rapidly increasing during the winter, rising by 1.6 kWh, from 2.6 kWh to 4.3 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 2.4 kWh on December 21.

For the purposes of this report, the geographical coordinates of Longquan are 40.364 deg latitude, 113.666 deg longitude, and 4,544 ft elevation.

The topography within 2 miles of Longquan contains very significant variations in elevation, with a maximum elevation change of 1,752 feet and an average elevation above sea level of 4,202 feet. Within 10 miles contains very significant variations in elevation (4,058 feet). Within 50 miles also contains extreme variations in elevation (5,495 feet).

The area within 2 miles of Longquan is covered by grassland (64%), trees (15%), and cropland (13%), within 10 miles by grassland (46%) and cropland (31%), and within 50 miles by grassland (39%) and cropland (33%).