October Weather in Waldorf Maryland, United States

Daily high temperatures decrease by 10°F, from 72°F to 62°F, rarely falling below 51°F or exceeding 81°F.

Daily low temperatures decrease by 11°F, from 56°F to 45°F, rarely falling below 35°F or exceeding 66°F.

For reference, on July 20, the hottest day of the year, temperatures in Waldorf typically range from 71°F to 87°F, while on January 30, the coldest day of the year, they range from 28°F to 43°F.

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

Belokany, Azerbaijan (5,848 miles away) is the far-away foreign place with temperatures most similar to Waldorf (view comparison).

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The month of October in Waldorf experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 36% to 41%. The lowest chance of overcast or mostly cloudy conditions is 35% on October 11.

The clearest day of the month is October 11, with clear, mostly clear, or partly cloudy conditions 65% of the time.

For reference, on January 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 52%, while on October 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 65%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Waldorf, the chance of a wet day over the course of October is essentially constant, remaining around 22% throughout.

For reference, the year's highest daily chance of a wet day is 39% on June 16, and its lowest chance is 20% on October 19.

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 October in Waldorf is gradually decreasing, starting the month at 3.5 inches, when it rarely exceeds 6.2 inches or falls below 1.3 inches, and ending the month at 3.1 inches, when it rarely exceeds 6.1 inches or falls below 0.7 inches.

Over the course of October in Waldorf, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 11 minutes, implying an average daily decrease of 2 minutes, 23 seconds, and weekly decrease of 16 minutes, 40 seconds.

The shortest day of the month is October 31, with 10 hours, 34 minutes of daylight and the longest day is October 1, with 11 hours, 46 minutes of daylight.

The earliest sunrise of the month in Waldorf is 7:04 AM on October 1 and the latest sunrise is 30 minutes later at 7:34 AM on October 31.

The latest sunset is 6:49 PM on October 1 and the earliest sunset is 41 minutes earlier at 6:08 PM on October 31.

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

For reference, on June 20, the longest day of the year, the Sun rises at 5:43 AM and sets 14 hours, 52 minutes later, at 8:35 PM, while on December 21, the shortest day of the year, it rises at 7:22 AM and sets 9 hours, 28 minutes later, at 4:50 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 October 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 Waldorf is rapidly decreasing during October, falling from 13% to 1% over the course of the month.

For reference, on July 27, the muggiest day of the year, there are muggy conditions 70% of the time, while on January 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 Waldorf is gradually increasing during October, increasing from 6.4 miles per hour to 7.1 miles per hour over the course of the month.

For reference, on February 25, the windiest day of the year, the daily average wind speed is 8.5 miles per hour, while on July 26, the calmest day of the year, the daily average wind speed is 5.0 miles per hour.

The hourly average wind direction in Waldorf throughout October is predominantly from the south, with a peak proportion of 30% on October 3.

Waldorf 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 Waldorf is rapidly decreasing during October, falling by 10°F, from 69°F to 59°F, over the course of the month.

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 Waldorf typically lasts for 7.4 months (227 days), from around March 28 to around November 10, rarely starting before March 12 or after April 14, and rarely ending before October 23 or after November 28.

The month of October in Waldorf is more likely than not fully within the growing season, with the chance that a given day is in the growing season rapidly decreasing from 100% to 77% 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 Waldorf are increasing during October, increasing by 274°F, from 3,733°F to 4,007°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 Waldorf is decreasing during October, falling by 1.3 kWh, from 4.5 kWh to 3.2 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Waldorf are 38.625 deg latitude, -76.939 deg longitude, and 203 ft elevation.

The topography within 2 miles of Waldorf is essentially flat, with a maximum elevation change of 85 feet and an average elevation above sea level of 203 feet. Within 10 miles is essentially flat (253 feet). Within 50 miles contains only modest variations in elevation (1,319 feet).

The area within 2 miles of Waldorf is covered by artificial surfaces (83%) and trees (15%), within 10 miles by trees (71%) and artificial surfaces (16%), and within 50 miles by trees (44%) and water (21%).