Spring Weather in Jasper United States

Daily high temperatures increase by 18°F, from 69°F to 87°F, rarely falling below 57°F or exceeding 92°F.

Daily low temperatures increase by 20°F, from 48°F to 68°F, rarely falling below 34°F or exceeding 74°F.

For reference, on August 11, the hottest day of the year, temperatures in Jasper typically range from 72°F to 93°F, while on January 23, the coldest day of the year, they range from 41°F to 61°F.

The figure below shows you a compact characterization of the hourly average spring 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.

Mezzouna, Tunisia (5,738 miles away); Adana, Turkey (6,722 miles); and Roxby Downs, Australia (9,452 miles) are the far-away foreign places with temperatures most similar to Jasper (view comparison).

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The spring in Jasper experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 47% to 38%.

The clearest day of the spring is April 21, with clear, mostly clear, or partly cloudy conditions 63% of the time.

For reference, on January 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 49%, while on October 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 70%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Jasper, the chance of a wet day over the course of the spring is very rapidly increasing, starting the season at 27% and ending it at 35%.

For reference, the year's highest daily chance of a wet day is 40% on June 17, and its lowest chance is 24% on October 10.

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 spring in Jasper is increasing, starting the season at 4.0 inches, when it rarely exceeds 6.9 inches or falls below 1.2 inches, and ending the season at 4.5 inches, when it rarely exceeds 8.7 inches or falls below 1.5 inches.

The lowest average 31-day accumulation is 3.7 inches on April 9.

Over the course of the spring in Jasper, 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, 28 minutes, implying an average daily increase of 1 minute, 38 seconds, and weekly increase of 11 minutes, 23 seconds.

The shortest day of the spring is March 1, with 11 hours, 33 minutes of daylight and the longest day is May 31, with 14 hours, 1 minute of daylight.

The latest sunrise of the spring in Jasper is 7:31 AM on March 10 and the earliest sunrise is 1 hour, 18 minutes earlier at 6:13 AM on May 31.

The earliest sunset is 6:14 PM on March 1 and the latest sunset is 2 hours, 0 minutes later at 8:14 PM on May 31.

Daylight saving time (DST) ends at 3:00 AM on March 10, 2024, shifting sunrise and sunset to be an hour earlier.

For reference, on June 20, the longest day of the year, the Sun rises at 6:13 AM and sets 14 hours, 9 minutes later, at 8:22 PM, while on December 21, the shortest day of the year, it rises at 7:10 AM and sets 10 hours, 9 minutes later, at 5:18 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 spring 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 Jasper is very rapidly increasing during the spring, rising from 9% to 80% over the course of the season.

For reference, on July 20, the muggiest day of the year, there are muggy conditions 98% of the time, while on January 23, the least muggy day of the year, there are muggy conditions 5% 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 Jasper is gradually decreasing during the spring, decreasing from 4.9 miles per hour to 4.1 miles per hour over the course of the season.

For reference, on March 31, the windiest day of the year, the daily average wind speed is 5.0 miles per hour, while on July 29, the calmest day of the year, the daily average wind speed is 3.4 miles per hour.

The highest daily average wind speed during the spring is 5.0 miles per hour on March 31.

The hourly average wind direction in Jasper throughout the spring is predominantly from the south, with a peak proportion of 62% on May 31.

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 Jasper typically lasts for 8.6 months (264 days), from around March 4 to around November 23, rarely starting before February 5 or after March 24, and rarely ending before October 31 or after December 17.

During the spring in Jasper, the chance that a given day is within the growing season is very rapidly increasing rising from 45% to 100% over the course of the 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 Jasper are very rapidly increasing during the spring, increasing by 1,588°F, from 352°F to 1,940°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 Jasper is very rapidly increasing during the spring, rising by 2.1 kWh, from 4.5 kWh to 6.6 kWh, over the course of the season.

For the purposes of this report, the geographical coordinates of Jasper are 30.920 deg latitude, -93.997 deg longitude, and 200 ft elevation.

The topography within 2 miles of Jasper contains only modest variations in elevation, with a maximum elevation change of 154 feet and an average elevation above sea level of 235 feet. Within 10 miles also contains only modest variations in elevation (469 feet). Within 50 miles contains only modest variations in elevation (591 feet).

The area within 2 miles of Jasper is covered by artificial surfaces (33%), cropland (27%), trees (24%), and herbaceous vegetation (13%), within 10 miles by trees (68%) and herbaceous vegetation (17%), and within 50 miles by trees (61%) and herbaceous vegetation (24%).