Average Weather in February in Louisa Virginia, United States
In Louisa, the month of February is characterized by rising daily high temperatures, with daily highs increasing by 7°F, from 48°F to 56°F over the course of the month, and rarely exceeding 71°F or dropping below 35°F.
Daily low temperatures increase by 5°F, from 29°F to 34°F, rarely falling below 15°F or exceeding 48°F.
For reference, on July 20, the hottest day of the year, temperatures in Louisa typically range from 69°F to 89°F, while on January 29, the coldest day of the year, they range from 29°F to 48°F.
Average High and Low Temperature in February
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on February. 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 February
The month of February in Louisa 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 February 22, with clear, mostly clear, or partly cloudy conditions 50% of the time.
For reference, on December 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 53%, while on September 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 65%.
Cloud Cover in February
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Louisa, the chance of a wet day over the course of February is gradually increasing, starting the month at 22% and ending it at 24%.
For reference, the year's highest daily chance of a wet day is 40% on July 15, and its lowest chance is 19% on October 19.
Over the course of February in Louisa, the chance of a day with only rain increases from 15% to 20%, the chance of a day with mixed snow and rain decreases from 5% to 3%, and the chance of a day with only snow remains an essentially constant 2% throughout.
Probability of Precipitation in February
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 February in Louisa is gradually increasing, starting the month at 2.2 inches, when it rarely exceeds 3.6 inches or falls below 0.8 inches, and ending the month at 2.5 inches, when it rarely exceeds 4.6 inches or falls below 1.0 inches.
The lowest average 31-day accumulation is 2.2 inches on February 9.
Average Monthly Rainfall in February
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 February in Louisa is essentially constant, remaining about 0.4 inches throughout, and rarely exceeding 1.4 inches or falling to 0.0 inches.
The highest average 31-day liquid-equivalent accumulation is 0.4 inches on February 11.
Average Monthly Liquid-Equivalent Snowfall in February
Over the course of February in Louisa, 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, 1 minute, implying an average daily increase of 2 minutes, 15 seconds, and weekly increase of 15 minutes, 43 seconds.
The shortest day of the month is February 1, with 10 hours, 19 minutes of daylight and the longest day is February 28, with 11 hours, 20 minutes of daylight.
Hours of Daylight and Twilight in February
The latest sunrise of the month in Louisa is 7:16 AM on February 1 and the earliest sunrise is 31 minutes earlier at 6:44 AM on February 28.
The earliest sunset is 5:35 PM on February 1 and the latest sunset is 29 minutes later at 6:04 PM on February 28.
Daylight saving time is observed in Louisa during 2017, but it neither starts nor ends during February, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:49 AM and sets 14 hours, 48 minutes later, at 8:38 PM, while on December 21, the shortest day of the year, it rises at 7:24 AM and sets 9 hours, 31 minutes later, at 4:55 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in February
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 Louisa is essentially constant during February, remaining around 0% throughout.
For reference, on July 20, the muggiest day of the year, there are muggy conditions 81% of the time, while on February 17, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in February
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 Louisa is essentially constant during February, remaining within 0.1 miles per hour of 2.8 miles per hour throughout.
For reference, on February 25, the windiest day of the year, the daily average wind speed is 2.9 miles per hour, while on August 1, the calmest day of the year, the daily average wind speed is 1.7 miles per hour.
The highest daily average wind speed during February is 2.9 miles per hour on February 26.
Average Wind Speed in February
Wind Direction in February
Louisa 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 Louisa is essentially constant during February, remaining within 1°F of 38°F throughout.
The lowest average surface water temperature during February is 37°F on February 6.
Average Water Temperature in February
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 Louisa is gradually increasing during February, rising by 1.0 kWh, from 2.9 kWh to 3.8 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in February
For the purposes of this report, the geographical coordinates of Louisa are 38.025 deg latitude, -78.004 deg longitude, and 420 ft elevation.
The topography within 2 miles of Louisa contains only modest variations in elevation, with a maximum elevation change of 226 feet and an average elevation above sea level of 420 feet. Within 10 miles also contains only modest variations in elevation (325 feet). Within 50 miles contains only modest variations in elevation (4,026 feet).
The area within 2 miles of Louisa is covered by trees (82%) and cropland (12%), within 10 miles by trees (84%) and cropland (14%), and within 50 miles by trees (76%) and cropland (18%).
This report illustrates the typical weather in Louisa 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 Louisa.
For each station, the records are corrected for the elevation difference between that station and Louisa 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 Louisa is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Louisa and a given station.
The stations contributing to this reconstruction are: Louisa, Louisa County Airport/Freeman Field (90%, 3.4 kilometers, southeast); Orange County Airport (6%, 25 kilometers, north); Charlottesville-Albemarle Airport (2.7%, 41 kilometers, west); and Farmville Municipal Airport (1.0%, 84 kilometers, southwest).
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.