Winter Weather in Zhangfeng China

Daily high temperatures increase by 6°F, from 75°F to 80°F, rarely falling below 68°F or exceeding 85°F. The lowest daily average high temperature is 72°F on January 2.

Daily low temperatures are around 50°F, rarely falling below 41°F or exceeding 59°F. The lowest daily average low temperature is 46°F on January 13.

For reference, on April 27, the hottest day of the year, temperatures in Zhangfeng typically range from 68°F to 89°F, while on January 13, the coldest day of the year, they range from 46°F to 72°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.

Libertador General San Martín, Argentina (11,350 miles away) and Lupane, Zimbabwe (5,579 miles) are the far-away foreign places with temperatures most similar to Zhangfeng (view comparison).

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The winter in Zhangfeng experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 18% to 14%. The lowest chance of overcast or mostly cloudy conditions is 11% on January 25.

The clearest day of the winter is January 25, with clear, mostly clear, or partly cloudy conditions 89% of the time.

For reference, on July 17, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 89%, while on January 25, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 89%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Zhangfeng, the chance of a wet day over the course of the winter is essentially constant, remaining around 4% throughout.

For reference, the year's highest daily chance of a wet day is 65% on July 16, and its lowest chance is 2% on December 16.

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the winter in Zhangfeng is essentially constant, remaining about 0.3 inches throughout, and rarely exceeding 1.2 inches or falling below -0.0 inches.

The lowest average 31-day accumulation is 0.2 inches on December 19.

Over the course of the winter in Zhangfeng, the length of the day is increasing. From the start to the end of the season, the length of the day increases by 54 minutes, implying an average daily increase of 36 seconds, and weekly increase of 4 minutes, 14 seconds.

The shortest day of the winter is December 20, with 10 hours, 38 minutes of daylight and the longest day is February 28, with 11 hours, 39 minutes of daylight.

The latest sunrise of the winter in Zhangfeng is 8:14 AM on January 14 and the earliest sunrise is 22 minutes earlier at 7:52 AM on February 28.

The earliest sunset is 6:40 PM on December 1 and the latest sunset is 51 minutes later at 7:30 PM on February 28.

Daylight saving time is not observed in Zhangfeng during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 6:41 AM and sets 13 hours, 38 minutes later, at 8:19 PM, while on December 21, the shortest day of the year, it rises at 8:07 AM and sets 10 hours, 38 minutes later, at 6:46 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 Zhangfeng is essentially constant during the winter, remaining around 0% throughout.

The lowest chance of a muggy day during the winter is 0% on December 20.

For reference, on July 31, the muggiest day of the year, there are muggy conditions 97% of the time, while on December 9, 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 Zhangfeng is essentially constant during the winter, remaining within 0.2 miles per hour of 2.8 miles per hour throughout.

For reference, on January 29, the windiest day of the year, the daily average wind speed is 3.0 miles per hour, while on August 21, the calmest day of the year, the daily average wind speed is 1.8 miles per hour.

The highest daily average wind speed during the winter is 3.0 miles per hour on January 31.

The wind direction in Zhangfeng during the winter is predominantly out of the east from December 1 to February 12 and the west from February 12 to February 28.

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).

Temperatures in Zhangfeng are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

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 Zhangfeng are very rapidly decreasing during the winter, decreasing by 6,640°F, from 7,297°F to 657°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 Zhangfeng is rapidly increasing during the winter, rising by 1.6 kWh, from 4.4 kWh to 6.0 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 4.4 kWh on December 13.

For the purposes of this report, the geographical coordinates of Zhangfeng are 24.221 deg latitude, 97.787 deg longitude, and 3,071 ft elevation.

The topography within 2 miles of Zhangfeng is essentially flat, with a maximum elevation change of 79 feet and an average elevation above sea level of 3,076 feet. Within 10 miles is essentially flat (3,927 feet). Within 50 miles also contains extreme variations in elevation (8,858 feet).

The area within 2 miles of Zhangfeng is covered by cropland (78%) and trees (15%), within 10 miles by trees (48%) and cropland (25%), and within 50 miles by trees (54%) and shrubs (27%).