December Weather in Jiuquan China

Daily high temperatures decrease by 7°F, from 35°F to 28°F, rarely falling below 18°F or exceeding 45°F.

Daily low temperatures decrease by 8°F, from 15°F to 8°F, rarely falling below -1°F or exceeding 23°F.

For reference, on July 24, the hottest day of the year, temperatures in Jiuquan typically range from 62°F to 83°F, while on January 18, the coldest day of the year, they range from 7°F to 28°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. 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.

Luverne, United States (6,609 miles away) is the far-away foreign place with temperatures most similar to Jiuquan (view comparison).

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The month of December in Jiuquan experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 32% throughout the month.

The clearest day of the month is December 1, with clear, mostly clear, or partly cloudy conditions 70% of the time.

For reference, on April 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 45%, while on September 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 76%.

Over the course of December in Jiuquan, the length of the day is essentially constant. The shortest day of the month is December 21, with 9 hours, 21 minutes of daylight and the longest day is December 1, with 9 hours, 34 minutes of daylight.

The earliest sunrise of the month in Jiuquan is 8:27 AM on December 1 and the latest sunrise is 19 minutes later at 8:46 AM on December 31.

The earliest sunset is 6:01 PM on December 8 and the latest sunset is 10 minutes later at 6:11 PM on December 31.

Daylight saving time is not observed in Jiuquan during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:57 AM and sets 14 hours, 59 minutes later, at 8:57 PM, while on December 21, the shortest day of the year, it rises at 8:43 AM and sets 9 hours, 21 minutes later, at 6:04 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 December 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 Jiuquan is essentially constant during December, remaining around 0% throughout.

For reference, on August 6, the muggiest day of the year, there are muggy conditions 0% 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 Jiuquan is essentially constant during December, remaining within 0.2 miles per hour of 5.6 miles per hour throughout.

For reference, on April 29, the windiest day of the year, the daily average wind speed is 9.2 miles per hour, while on January 18, the calmest day of the year, the daily average wind speed is 5.4 miles per hour.

The hourly average wind direction in Jiuquan throughout December is predominantly from the west, with a peak proportion of 41% on December 20.

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 Jiuquan typically lasts for 6.0 months (182 days), from around April 15 to around October 14, rarely starting before March 28 or after May 4, and rarely ending before September 26 or after October 31.

The month of December in Jiuquan 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 Jiuquan are essentially constant during December, remaining around 2,849°F throughout.

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 Jiuquan is essentially constant during December, remaining within 0.1 kWh of 2.6 kWh throughout.

The lowest average daily incident shortwave solar energy during December is 2.5 kWh on December 20.

For the purposes of this report, the geographical coordinates of Jiuquan are 39.743 deg latitude, 98.517 deg longitude, and 4,803 ft elevation.

The topography within 2 miles of Jiuquan contains only modest variations in elevation, with a maximum elevation change of 180 feet and an average elevation above sea level of 4,796 feet. Within 10 miles contains only modest variations in elevation (1,243 feet). Within 50 miles contains very significant variations in elevation (14,255 feet).

The area within 2 miles of Jiuquan is covered by artificial surfaces (42%), cropland (34%), and water (11%), within 10 miles by cropland (42%) and grassland (20%), and within 50 miles by grassland (43%) and bare soil (37%).