September Weather in Filadelfia Paraguay

Daily high temperatures increase by 4°F, from 91°F to 95°F, rarely falling below 76°F or exceeding 106°F.

Daily low temperatures increase by 5°F, from 64°F to 69°F, rarely falling below 51°F or exceeding 80°F.

For reference, on December 24, the hottest day of the year, temperatures in Filadelfia typically range from 77°F to 98°F, while on July 19, the coldest day of the year, they range from 57°F to 83°F.

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

Tamuin, Mexico (4,028 miles away); Al Ḩazm, Yemen (7,570 miles); and Tennant Creek, Australia (9,391 miles) are the far-away foreign places with temperatures most similar to Filadelfia (view comparison).

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The month of September in Filadelfia experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 30% to 39%.

The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 70% of the time.

For reference, on January 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on August 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Filadelfia, the chance of a wet day over the course of September is rapidly increasing, starting the month at 7% and ending it at 15%.

For reference, the year's highest daily chance of a wet day is 36% on January 10, and its lowest chance is 6% on July 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 September in Filadelfia is increasing, starting the month at 0.5 inches, when it rarely exceeds 1.3 inches, and ending the month at 1.4 inches, when it rarely exceeds 2.7 inches or falls below 0.3 inches.

Over the course of September in Filadelfia, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 37 minutes, implying an average daily increase of 1 minute, 16 seconds, and weekly increase of 8 minutes, 50 seconds.

The shortest day of the month is September 1, with 11 hours, 41 minutes of daylight and the longest day is September 30, with 12 hours, 17 minutes of daylight.

The latest sunrise of the month in Filadelfia is 6:09 AM on September 1 and the earliest sunrise is 28 minutes earlier at 5:41 AM on September 30.

The earliest sunset is 5:50 PM on September 1 and the latest sunset is 8 minutes later at 5:58 PM on September 30.

Daylight saving time is observed in Filadelfia during 2024, but it neither starts nor ends during September, so the entire month is in daylight saving time.

For reference, on December 21, the longest day of the year, the Sun rises at 6:13 AM and sets 13 hours, 30 minutes later, at 7:43 PM, while on June 20, the shortest day of the year, it rises at 6:38 AM and sets 10 hours, 46 minutes later, at 5:24 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 September 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 Filadelfia is rapidly increasing during September, rising from 2% to 14% over the course of the month.

For reference, on February 23, the muggiest day of the year, there are muggy conditions 74% of the time, while on July 31, the least muggy day of the year, there are muggy conditions 1% 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 Filadelfia is essentially constant during September, remaining within 0.1 miles per hour of 10.9 miles per hour throughout.

For reference, on September 7, the windiest day of the year, the daily average wind speed is 11.0 miles per hour, while on March 17, the calmest day of the year, the daily average wind speed is 8.2 miles per hour.

The highest daily average wind speed during September is 11.0 miles per hour on September 7.

The hourly average wind direction in Filadelfia throughout September is predominantly from the north, with a peak proportion of 39% on September 5.

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).

Temperatures in Filadelfia are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

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 Filadelfia are rapidly increasing during September, increasing by 744°F, from 1,264°F to 2,009°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 Filadelfia is gradually increasing during September, rising by 0.6 kWh, from 5.2 kWh to 5.8 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Filadelfia are -22.339 deg latitude, -60.032 deg longitude, and 459 ft elevation.

The topography within 2 miles of Filadelfia is essentially flat, with a maximum elevation change of 36 feet and an average elevation above sea level of 454 feet. Within 10 miles is also essentially flat (79 feet). Within 50 miles is essentially flat (249 feet).

The area within 2 miles of Filadelfia is covered by cropland (65%), grassland (13%), shrubs (11%), and trees (11%), within 10 miles by cropland (67%) and grassland (12%), and within 50 miles by trees (35%) and cropland (31%).