Winter Weather in Hongguan China

Daily high temperatures are around 66°F, rarely falling below 48°F or exceeding 79°F. The lowest daily average high temperature is 62°F on January 21.

Daily low temperatures are around 48°F, rarely falling below 34°F or exceeding 62°F. The lowest daily average low temperature is 45°F on January 19.

For reference, on July 24, the hottest day of the year, temperatures in Hongguan typically range from 73°F to 86°F, while on January 19, the coldest day of the year, they range from 45°F to 62°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.

Amelia, United States (8,553 miles away) and Jacksonville, United States (8,702 miles) are the far-away foreign places with temperatures most similar to Hongguan (view comparison).

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The winter in Hongguan experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 30% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 26% on December 12.

The clearest day of the winter is December 12, with clear, mostly clear, or partly cloudy conditions 74% of the time.

For reference, on June 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 86%, while on December 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 74%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Hongguan, the chance of a wet day over the course of the winter is increasing, starting the season at 10% and ending it at 16%.

For reference, the year's highest daily chance of a wet day is 61% on June 2, and its lowest chance is 7% on December 18.

Over the course of the winter in Hongguan, the chance of a day with only rain increases from 10% to 16%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.

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 Hongguan is increasing, starting the season at 1.1 inches, when it rarely exceeds 3.2 inches, and ending the season at 1.9 inches, when it rarely exceeds 4.2 inches or falls below 0.2 inches.

The lowest average 31-day accumulation is 1.0 inches on December 17.

Over the course of the winter in Hongguan, the length of the day is increasing. From the start to the end of the season, the length of the day increases by 49 minutes, implying an average daily increase of 33 seconds, and weekly increase of 3 minutes, 53 seconds.

The shortest day of the winter is December 22, with 10 hours, 46 minutes of daylight and the longest day is February 28, with 11 hours, 41 minutes of daylight.

The latest sunrise of the winter in Hongguan is 5:17 AM on January 15 and the earliest sunrise is 20 minutes earlier at 4:57 AM on February 28.

The earliest sunset is 3:50 PM on December 1 and the latest sunset is 48 minutes later at 4:38 PM on February 28.

Daylight saving time is not observed in Hongguan during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 3:51 AM and sets 13 hours, 31 minutes later, at 5:22 PM, while on December 21, the shortest day of the year, it rises at 5:10 AM and sets 10 hours, 46 minutes later, at 3:56 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 Hongguan is increasing during the winter, rising from 5% to 11% over the course of the season.

The lowest chance of a muggy day during the winter is 0% on January 8.

For reference, on June 30, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 8, 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 Hongguan is gradually increasing during the winter, increasing from 8.1 miles per hour to 8.8 miles per hour over the course of the season.

For reference, on March 27, the windiest day of the year, the daily average wind speed is 9.1 miles per hour, while on August 19, the calmest day of the year, the daily average wind speed is 6.1 miles per hour.

The wind direction in Hongguan during the winter is predominantly out of the north from December 1 to February 10, the east from February 10 to February 12, and the south from February 12 to February 28.

Hongguan is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Hongguan is decreasing during the winter, falling by 5°F, from 72°F to 67°F, over the course of the season.

The lowest average surface water temperature during the winter is 66°F on January 24.

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).

While it does not do so every year, freezing temperatures are seen in Hongguan over some winters. The day least likely to be in the growing season is January 10, with a 58% chance.

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 Hongguan are very rapidly decreasing during the winter, decreasing by 6,196°F, from 6,588°F to 392°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 Hongguan is essentially constant during the winter, remaining within 0.3 kWh of 4.3 kWh throughout.

The lowest average daily incident shortwave solar energy during the winter is 4.0 kWh on January 11.

For the purposes of this report, the geographical coordinates of Hongguan are 22.452 deg latitude, 111.145 deg longitude, and 1,073 ft elevation.

The topography within 2 miles of Hongguan contains large variations in elevation, with a maximum elevation change of 2,028 feet and an average elevation above sea level of 1,423 feet. Within 10 miles contains large variations in elevation (4,521 feet). Within 50 miles also contains extreme variations in elevation (5,538 feet).

The area within 2 miles of Hongguan is covered by trees (79%) and shrubs (12%), within 10 miles by trees (73%) and shrubs (13%), and within 50 miles by trees (68%) and cropland (13%).