Average Weather in March in Signal Mountain Tennessee, United States
In Signal Mountain, the month of March is characterized by rising daily high temperatures, with daily highs increasing by 9°F, from 57°F to 65°F over the course of the month, and rarely exceeding 77°F or dropping below 42°F.
Daily low temperatures increase by 8°F, from 37°F to 45°F, rarely falling below 24°F or exceeding 57°F.
For reference, on July 22, the hottest day of the year, temperatures in Signal Mountain typically range from 69°F to 87°F, while on January 25, the coldest day of the year, they range from 30°F to 48°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 Signal Mountain experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 51% throughout the month.
The clearest day of the month is March 31, with clear, mostly clear, or partly cloudy conditions 51% of the time.
For reference, on January 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 56%, while on September 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%.
Cloud Cover in March
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Signal Mountain, the chance of a wet day over the course of March is essentially constant, remaining around 31% throughout.
For reference, the year's highest daily chance of a wet day is 43% on July 9, and its lowest chance is 21% on October 16.
Over the course of March in Signal Mountain, the chance of a day with only rain increases from 29% to 32%, 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.
Probability of Precipitation in March
The average sliding 31-day rainfall during March in Signal Mountain is essentially constant, remaining about 4.5 inches throughout, and rarely exceeding 7.7 inches or falling below 2.0 inches.
The highest average 31-day accumulation is 4.5 inches on March 17.
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 Signal Mountain is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.6 inches or falling below -0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in March
Over the course of March in Signal Mountain, 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, 6 minutes, implying an average daily increase of 2 minutes, 13 seconds, and weekly increase of 15 minutes, 29 seconds.
The shortest day of the month is March 1, with 11 hours, 27 minutes of daylight and the longest day is March 31, with 12 hours, 33 minutes of daylight.
Hours of Daylight and Twilight in March
The earliest sunrise of the month in Signal Mountain is 6:57 AM on March 11 and the latest sunrise is 59 minutes later at 7:55 AM on March 12.
The earliest sunset is 6:37 PM on March 1 and the latest sunset is 1 hour, 25 minutes later at 8:02 PM on March 31.
Daylight saving time (DST) starts at 3:00 AM on March 12, 2017, shifting sunrise and sunset to be an hour later.
For reference, on June 21, the longest day of the year, the Sun rises at 6:27 AM and sets 14 hours, 32 minutes later, at 8:59 PM, while on December 21, the shortest day of the year, it rises at 7:45 AM and sets 9 hours, 47 minutes later, at 5:33 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in March
The chance that a given day will be muggy in Signal Mountain is essentially constant during March, remaining around 0% throughout.
For reference, on July 24, the muggiest day of the year, there are muggy conditions 83% of the time, while on December 18, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in March
The average hourly wind speed in Signal Mountain is essentially constant during March, remaining within 0.1 miles per hour of 3.0 miles per hour throughout.
For reference, on February 26, the windiest day of the year, the daily average wind speed is 3.1 miles per hour, while on August 1, the calmest day of the year, the daily average wind speed is 1.7 miles per hour.
Average Wind Speed in March
Wind Direction in March
The average daily incident shortwave solar energy in Signal Mountain is increasing during March, rising by 1.2 kWh, from 4.0 kWh to 5.2 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 Signal Mountain are 35.123 deg latitude, -85.344 deg longitude, and 1,322 ft elevation.
The topography within 2 miles of Signal Mountain contains very significant variations in elevation, with a maximum elevation change of 1,355 feet and an average elevation above sea level of 1,366 feet. Within 10 miles also contains very significant variations in elevation (1,821 feet). Within 50 miles contains very significant variations in elevation (3,720 feet).
The area within 2 miles of Signal Mountain is covered by trees (88%), within 10 miles by trees (68%) and artificial surfaces (22%), and within 50 miles by trees (66%) and cropland (28%).
This report illustrates the typical weather in Signal Mountain 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Signal Mountain.
For each station, the records are corrected for the elevation difference between that station and Signal Mountain 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 Signal Mountain is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Signal Mountain and a given station.
The stations contributing to this reconstruction are: Lovell Field (72%, 17 kilometers, southeast); Scottsboro Municipal Airport Word Field (13%, 77 kilometers, southwest); Crossville Memorial Airport (10%, 95 kilometers, north); and Smyrna Airport (5%, 145 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .