Winter Weather in Shuanglu China

Daily high temperatures increase by 6°F, from 13°F to 19°F, rarely falling below -9°F or exceeding 31°F. The lowest daily average high temperature is 1°F on January 10.

Daily low temperatures are around -9°F, rarely falling below -30°F or exceeding 11°F. The lowest daily average low temperature is -17°F on January 18.

For reference, on July 17, the hottest day of the year, temperatures in Shuanglu typically range from 61°F to 81°F, while on January 17, the coldest day of the year, they range from -17°F to 2°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.

High Level, Canada (4,256 miles away); Nipawin, Canada (4,850 miles); and Red Lake, Canada (5,208 miles) are the far-away foreign places with temperatures most similar to Shuanglu (view comparison).

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The winter in Shuanglu experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 51% throughout the season. The highest chance of overcast or mostly cloudy conditions is 53% on December 23.

The clearest day of the winter is January 23, with clear, mostly clear, or partly cloudy conditions 51% of the time.

For reference, on December 23, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 53%, while on September 5, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 62%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Shuanglu, the chance of a wet day over the course of the winter is essentially constant, remaining around 2% throughout.

For reference, the year's highest daily chance of a wet day is 43% on July 15, and its lowest chance is 1% on January 14.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during the winter in Shuanglu is essentially constant, remaining about 0.7 inches throughout, and rarely exceeding 3.4 inches or falling to 0.0 inches.

The lowest average 31-day accumulation is 0.4 inches on January 21.

Over the course of the winter in Shuanglu, the length of the day is very rapidly increasing. From the start to the end of the season, the length of the day increases by 2 hours, 17 minutes, implying an average daily increase of 1 minute, 32 seconds, and weekly increase of 10 minutes, 46 seconds.

The shortest day of the winter is December 21, with 8 hours, 25 minutes of daylight and the longest day is February 28, with 11 hours, 0 minutes of daylight.

The latest sunrise of the winter in Shuanglu is 7:20 AM on December 31 and the earliest sunrise is 1 hour, 5 minutes earlier at 6:14 AM on February 28.

The earliest sunset is 3:40 PM on December 11 and the latest sunset is 1 hour, 35 minutes later at 5:14 PM on February 28.

Daylight saving time is not observed in Shuanglu during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 3:33 AM and sets 15 hours, 59 minutes later, at 7:33 PM, while on December 21, the shortest day of the year, it rises at 7:17 AM and sets 8 hours, 25 minutes later, at 3:42 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 Shuanglu is essentially constant during the winter, remaining around 0% throughout.

For reference, on July 27, the muggiest day of the year, there are muggy conditions 28% of the time, while on September 24, 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 Shuanglu is gradually increasing during the winter, increasing from 8.0 miles per hour to 8.5 miles per hour over the course of the season.

For reference, on April 15, the windiest day of the year, the daily average wind speed is 10.2 miles per hour, while on July 18, the calmest day of the year, the daily average wind speed is 6.4 miles per hour.

The lowest daily average wind speed during the winter is 7.4 miles per hour on January 10.

The wind direction in Shuanglu during the winter is predominantly out of the west from December 1 to December 31 and from January 9 to January 24 and the north from December 31 to January 9 and from January 24 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).

The growing season in Shuanglu typically lasts for 4.6 months (141 days), from around May 7 to around September 25, rarely starting before April 22 or after May 21, and rarely ending before September 10 or after October 9.

The winter in Shuanglu 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 Shuanglu are very rapidly decreasing during the winter, decreasing by 2,180°F, from 2,180°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 Shuanglu is rapidly increasing during the winter, rising by 1.8 kWh, from 1.5 kWh to 3.2 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 1.3 kWh on December 18.

For the purposes of this report, the geographical coordinates of Shuanglu are 47.631 deg latitude, 127.047 deg longitude, and 846 ft elevation.

The topography within 2 miles of Shuanglu contains only modest variations in elevation, with a maximum elevation change of 364 feet and an average elevation above sea level of 844 feet. Within 10 miles also contains only modest variations in elevation (449 feet). Within 50 miles contains only modest variations in elevation (1,801 feet).

The area within 2 miles of Shuanglu is covered by cropland (87%), within 10 miles by cropland (82%), and within 50 miles by cropland (60%) and trees (30%).