Average Weather in March in Hellertown Pennsylvania, United States
Daily high temperatures increase by 11°F, from 45°F to 56°F, rarely falling below 33°F or exceeding 70°F.
Daily low temperatures increase by 9°F, from 28°F to 37°F, rarely falling below 16°F or exceeding 47°F.
For reference, on July 21, the hottest day of the year, temperatures in Hellertown typically range from 66°F to 85°F, while on January 30, the coldest day of the year, they range from 23°F to 37°F.
Average High and Low Temperature in March
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on March. 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.
Average Hourly Temperature in March
The month of March in Hellertown experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 52% throughout the month.
The clearest day of the month is March 12, with clear, mostly clear, or partly cloudy conditions 49% of the time.
For reference, on January 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 56%, while on August 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 65%.
Cloud Cover Categories in March
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Hellertown, the chance of a wet day over the course of March is increasing, starting the month at 25% and ending it at 29%.
For reference, the year's highest daily chance of a wet day is 39% on June 16, and its lowest chance is 21% on January 28.
Over the course of March in Hellertown, the chance of a day with only rain increases from 16% to 26%, the chance of a day with mixed snow and rain decreases from 6% to 2%, and the chance of a day with only snow decreases from 3% to 0%.
Probability of Precipitation in March
The average sliding 31-day rainfall during March in Hellertown is rapidly increasing, starting the month at 2.1 inches, when it rarely exceeds 3.8 inches or falls below 0.7 inches, and ending the month at 3.3 inches, when it rarely exceeds 5.9 inches or falls below 1.4 inches.
Average Monthly Rainfall in March
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during March in Hellertown is gradually decreasing, starting the month at 0.6 inches, when it rarely exceeds 1.8 inches, and ending the month at 0.2 inches, when it rarely exceeds 0.7 inches or falls below -0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in March
Over the course of March in Hellertown, 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, 21 minutes, implying an average daily increase of 2 minutes, 42 seconds, and weekly increase of 18 minutes, 52 seconds.
The shortest day of the month is March 1, with 11 hours, 17 minutes of daylight and the longest day is March 31, with 12 hours, 38 minutes of daylight.
Hours of Daylight and Twilight in March
The earliest sunrise of the month in Hellertown is 6:23 AM on March 9 and the latest sunrise is 58 minutes later at 7:21 AM on March 10.
The earliest sunset is 5:52 PM on March 1 and the latest sunset is 1 hour, 32 minutes later at 7:24 PM on March 31.
Daylight saving time (DST) starts at 3:00 AM on March 10, 2019, shifting sunrise and sunset to be an hour later.
For reference, on June 21, the longest day of the year, the Sun rises at 5:30 AM and sets 15 hours, 5 minutes later, at 8:35 PM, while on December 22, the shortest day of the year, it rises at 7:21 AM and sets 9 hours, 16 minutes later, at 4:37 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in March
The chance that a given day will be muggy in Hellertown is essentially constant during March, remaining around 0% throughout.
For reference, on July 29, the muggiest day of the year, there are muggy conditions 58% of the time, while on January 24, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in March
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Hellertown is gradually decreasing during March, decreasing from 6.6 miles per hour to 6.1 miles per hour over the course of the month.
For reference, on February 26, the windiest day of the year, the daily average wind speed is 6.7 miles per hour, while on August 12, the calmest day of the year, the daily average wind speed is 3.5 miles per hour.
Average Wind Speed in March
Wind Direction in March
The growing season in Hellertown typically lasts for 6.3 months (193 days), from around April 12 to around October 22, rarely starting before March 26 or after April 29, and rarely ending before October 4 or after November 10.
The month of March in Hellertown is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season increasing from 0% to 19% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in March
The average accumulated growing degree days in Hellertown are gradually increasing during March, increasing by 46°F, from 15°F to 61°F, over the course of the month.
Growing Degree Days in March
The average daily incident shortwave solar energy in Hellertown is increasing during March, rising by 1.2 kWh, from 3.5 kWh to 4.7 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in March
For the purposes of this report, the geographical coordinates of Hellertown are 40.580 deg latitude, -75.341 deg longitude, and 420 ft elevation.
The topography within 2 miles of Hellertown contains significant variations in elevation, with a maximum elevation change of 771 feet and an average elevation above sea level of 416 feet. Within 10 miles contains significant variations in elevation (915 feet). Within 50 miles contains very significant variations in elevation (2,264 feet).
The area within 2 miles of Hellertown is covered by trees (56%), artificial surfaces (26%), and cropland (18%), within 10 miles by trees (43%) and artificial surfaces (31%), and within 50 miles by trees (53%) and cropland (23%).
This report illustrates the typical weather in Hellertown year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Hellertown.
For each station, the records are corrected for the elevation difference between that station and Hellertown according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Hellertown is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Hellertown and a given station.
The stations contributing to this reconstruction are: Lehigh Valley International Airport (36%, 12 kilometers, northwest); Allentown Queen City Municipal Airport (36%, 12 kilometers, west); Quakertown Airport (22%, 16 kilometers, south); Somerset Airport (3.4%, 57 kilometers, east); and Aeroflex-Andover Airport (2.6%, 70 kilometers, northeast).
Time zones for aiports and weather stations are provided by AskGeo.com .