April Weather in Shingletown United States

Daily high temperatures increase by 7°F, from 59°F to 66°F, rarely falling below 46°F or exceeding 79°F.

Daily low temperatures increase by 5°F, from 37°F to 42°F, rarely falling below 29°F or exceeding 50°F.

For reference, on July 28, the hottest day of the year, temperatures in Shingletown typically range from 57°F to 88°F, while on December 26, the coldest day of the year, they range from 29°F to 46°F.

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

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The month of April in Shingletown experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 56% to 49%.

The clearest day of the month is April 30, with clear, mostly clear, or partly cloudy conditions 51% of the time.

For reference, on January 9, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 65%, while on August 2, 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 Shingletown, the chance of a wet day over the course of April is rapidly decreasing, starting the month at 28% and ending it at 21%.

For reference, the year's highest daily chance of a wet day is 38% on February 29, and its lowest chance is 2% on July 19.

Over the course of April in Shingletown, the chance of a day with only rain decreases from 26% to 21%, 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 month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during April in Shingletown is rapidly decreasing, starting the month at 3.5 inches, when it rarely exceeds 7.4 inches or falls below 0.7 inches, and ending the month at 2.1 inches, when it rarely exceeds 4.7 inches or falls below 0.3 inches.

Over the course of April in Shingletown, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 13 minutes, implying an average daily increase of 2 minutes, 31 seconds, and weekly increase of 17 minutes, 40 seconds.

The shortest day of the month is April 1, with 12 hours, 43 minutes of daylight and the longest day is April 30, with 13 hours, 56 minutes of daylight.

The latest sunrise of the month in Shingletown is 6:50 AM on April 1 and the earliest sunrise is 43 minutes earlier at 6:07 AM on April 30.

The earliest sunset is 7:32 PM on April 1 and the latest sunset is 30 minutes later at 8:02 PM on April 30.

Daylight saving time is observed in Shingletown during 2024, but it neither starts nor ends during April, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:37 AM and sets 15 hours, 4 minutes later, at 8:41 PM, while on December 21, the shortest day of the year, it rises at 7:27 AM and sets 9 hours, 17 minutes later, at 4:44 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 April 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 Shingletown is essentially constant during April, 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 Shingletown is essentially constant during April, remaining within 0.2 miles per hour of 6.5 miles per hour throughout.

For reference, on December 17, the windiest day of the year, the daily average wind speed is 7.4 miles per hour, while on May 24, the calmest day of the year, the daily average wind speed is 6.0 miles per hour.

The hourly average wind direction in Shingletown throughout April is predominantly from the south, with a peak proportion of 43% on April 3.

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 Shingletown typically lasts for 6.2 months (189 days), from around April 24 to around October 30, rarely starting before April 2 or after May 15, and rarely ending before October 11 or after November 16.

During April in Shingletown, the chance that a given day is within the growing season is very rapidly increasing rising from 9% to 65% over the course of the month.

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 Shingletown are gradually increasing during April, increasing by 121°F, from 97°F to 218°F, over the course of the month.

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 Shingletown is increasing during April, rising by 1.3 kWh, from 5.2 kWh to 6.5 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Shingletown are 40.492 deg latitude, -121.889 deg longitude, and 3,488 ft elevation.

The topography within 2 miles of Shingletown contains very significant variations in elevation, with a maximum elevation change of 1,020 feet and an average elevation above sea level of 3,334 feet. Within 10 miles contains very significant variations in elevation (4,039 feet). Within 50 miles also contains extreme variations in elevation (10,256 feet).

The area within 2 miles of Shingletown is covered by trees (71%) and shrubs (29%), within 10 miles by shrubs (46%) and trees (36%), and within 50 miles by trees (46%) and shrubs (26%).