Winter Weather in Woodacre United States

Daily high temperatures are around 56°F, rarely falling below 47°F or exceeding 66°F. The lowest daily average high temperature is 52°F on December 31.

Daily low temperatures are around 42°F, rarely falling below 32°F or exceeding 50°F. The lowest daily average low temperature is 40°F on December 31.

For reference, on September 9, the hottest day of the year, temperatures in Woodacre typically range from 51°F to 73°F, while on December 30, the coldest day of the year, they range from 40°F to 53°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.

Nueva Imperial, Chile (6,177 miles away); San Antonio, Chile (5,940 miles); and Hobart, Australia (7,940 miles) are the far-away foreign places with temperatures most similar to Woodacre (view comparison).

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The winter in Woodacre experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 53% throughout the season. The highest chance of overcast or mostly cloudy conditions is 55% on January 11.

The clearest day of the winter is December 7, with clear, mostly clear, or partly cloudy conditions 50% of the time.

For reference, on January 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 55%, while on July 19, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 92%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Woodacre, the chance of a wet day over the course of the winter is gradually increasing, starting the season at 27% and ending it at 31%.

For reference, the year's highest daily chance of a wet day is 32% on February 20, and its lowest chance is -0% on July 27.

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 Woodacre is gradually increasing, starting the season at 3.8 inches, when it rarely exceeds 7.9 inches or falls below 0.6 inches, and ending the season at 4.2 inches, when it rarely exceeds 8.5 inches or falls below 0.7 inches.

The highest average 31-day accumulation is 4.6 inches on February 14.

Over the course of the winter in Woodacre, 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, 38 minutes, implying an average daily increase of 1 minute, 6 seconds, and weekly increase of 7 minutes, 41 seconds.

The shortest day of the winter is December 20, with 9 hours, 31 minutes of daylight and the longest day is February 28, with 11 hours, 20 minutes of daylight.

The latest sunrise of the winter in Woodacre is 7:27 AM on January 5 and the earliest sunrise is 44 minutes earlier at 6:43 AM on February 28.

The earliest sunset is 4:50 PM on December 6 and the latest sunset is 1 hour, 13 minutes later at 6:03 PM on February 28.

Daylight saving time is observed in Woodacre during 2024, but it neither starts nor ends during the winter, so the entire season is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:48 AM and sets 14 hours, 48 minutes later, at 8:36 PM, while on December 21, the shortest day of the year, it rises at 7:23 AM and sets 9 hours, 32 minutes later, at 4:54 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 Woodacre is essentially constant during the winter, remaining around 0% throughout.

For reference, on August 20, 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 Woodacre is essentially constant during the winter, remaining within 0.3 miles per hour of 8.4 miles per hour throughout.

For reference, on June 5, the windiest day of the year, the daily average wind speed is 9.7 miles per hour, while on October 20, the calmest day of the year, the daily average wind speed is 7.3 miles per hour.

The wind direction in Woodacre during the winter is predominantly out of the north from December 1 to February 10 and the west from February 10 to February 28.

Woodacre 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 Woodacre is essentially constant during the winter, remaining within 1°F of 54°F throughout.

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 Woodacre typically lasts for 12 months (361 days), from around January 5 to around December 31, rarely starting after February 13, or ending before November 25.

The smallest chance that a given day will be within the growing season in Woodacre during the winter is 49% on January 3.

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 Woodacre are very rapidly decreasing during the winter, decreasing by 1,833°F, from 1,921°F to 88°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 Woodacre is increasing during the winter, rising by 1.4 kWh, from 2.3 kWh to 3.8 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 2.1 kWh on December 24.

For the purposes of this report, the geographical coordinates of Woodacre are 38.013 deg latitude, -122.645 deg longitude, and 361 ft elevation.

The topography within 2 miles of Woodacre contains very significant variations in elevation, with a maximum elevation change of 1,319 feet and an average elevation above sea level of 793 feet. Within 10 miles contains very significant variations in elevation (2,569 feet). Within 50 miles contains large variations in elevation (4,295 feet).

The area within 2 miles of Woodacre is covered by trees (49%), grassland (35%), and shrubs (12%), within 10 miles by trees (36%) and grassland (22%), and within 50 miles by water (46%) and grassland (17%).