March Weather in Mehamn NorwayDaily high temperatures increase by 3°F, from 29°F to 32°F, rarely falling below 20°F or exceeding 39°F. Daily low temperatures increase by 4°F, from 20°F to 23°F, rarely falling below 9°F or exceeding 31°F. For reference, on July 24, the hottest day of the year, temperatures in Mehamn typically range from 47°F to 57°F, while on February 8, the coldest day of the year, they range from 18°F to 27°F. 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. Diamond Ridge, United States (3,409 miles away) is the far-away foreign place with temperatures most similar to Mehamn (view comparison). CloudsThe month of March in Mehamn experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 77% throughout the month. The clearest day of the month is March 31, with clear, mostly clear, or partly cloudy conditions 23% of the time. For reference, on January 6, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 83%, while on June 25, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 40%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Mehamn, the chance of a wet day over the course of March is essentially constant, remaining around 24% throughout. For reference, the year's highest daily chance of a wet day is 40% on October 22, and its lowest chance is 22% on April 17. Over the course of March in Mehamn, the chance of a day with only rain remains an essentially constant 4% throughout, the chance of a day with mixed snow and rain remains an essentially constant 6% throughout, and the chance of a day with only snow decreases from 15% to 13%. RainfallTo 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 March in Mehamn is essentially constant, remaining about 0.3 inches throughout, and rarely exceeding 0.8 inches. The lowest average 31-day accumulation is 0.3 inches on March 2. SnowfallAs with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day snowfall during March in Mehamn is gradually decreasing, starting the month at 8.6 inches, when it rarely exceeds 15.4 inches or falls below 2.6 inches, and ending the month at 7.7 inches, when it rarely exceeds 14.1 inches or falls below 2.3 inches. SunDue to its extreme latitude, Mehamn experiences polar day (also known as the midnight Sun) during the summer and polar night during the winter. These are periods of time in which the sun is continuously above or below the horizon for more than one day. The precise start and end dates of polar day and night vary from year to year and depend on the precise location and elevation of the observer, and the local topography. Neither polar day nor polar night occur during the month of March. Over the course of March in Mehamn, the length of the day is very rapidly increasing. From the start to the end of the month, the length of the day increases by 4 hours, 39 minutes, implying an average daily increase of 9 minutes, 18 seconds, and weekly increase of 1 hour, 5 minutes, 4 seconds. The shortest day of the month is March 1, with 9 hours, 26 minutes of daylight and the longest day is March 31, with 14 hours, 5 minutes of daylight. The latest sunrise of the month in Mehamn is 6:38 AM on March 1 and the earliest sunrise is 2 hours, 22 minutes earlier at 4:16 AM on March 30. The earliest sunset is 4:04 PM on March 1 and the latest sunset is 3 hours, 12 minutes later at 7:16 PM on March 31. Daylight saving time (DST) ends at 3:00 AM on March 31, 2024, shifting sunrise and sunset to be an hour earlier. 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. MoonThe figure below presents a compact representation of key lunar data for March 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.
HumidityWe 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 Mehamn is essentially constant during March, remaining around 0% throughout. WindThis 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 Mehamn is decreasing during March, decreasing from 18.0 miles per hour to 16.3 miles per hour over the course of the month. For reference, on January 29, the windiest day of the year, the daily average wind speed is 18.7 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 10.6 miles per hour. The hourly average wind direction in Mehamn throughout March is predominantly from the south, with a peak proportion of 42% on March 2. Water TemperatureMehamn 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 Mehamn is essentially constant during March, remaining around 39°F throughout. The lowest average surface water temperature during March is 39°F on March 26. Growing SeasonDefinitions 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 Mehamn typically lasts for 4.0 months (123 days), from around May 26 to around September 26, rarely starting before May 6 or after June 15, and rarely ending before September 6 or after October 14. The month of March in Mehamn is reliably fully outside of the growing 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 Mehamn are essentially constant during March, remaining around 0°F throughout. Solar EnergyThis 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 Mehamn is increasing during March, rising by 1.2 kWh, from 0.5 kWh to 1.7 kWh, over the course of the month. TopographyFor the purposes of this report, the geographical coordinates of Mehamn are 71.041 deg latitude, 27.851 deg longitude, and 59 ft elevation. The topography within 2 miles of Mehamn contains significant variations in elevation, with a maximum elevation change of 755 feet and an average elevation above sea level of 156 feet. Within 10 miles contains significant variations in elevation (1,211 feet). Within 50 miles contains very significant variations in elevation (2,362 feet). The area within 2 miles of Mehamn is covered by water (42%), sparse vegetation (24%), bare soil (18%), and shrubs (13%), within 10 miles by water (43%) and sparse vegetation (36%), and within 50 miles by water (70%) and sparse vegetation (15%). Data SourcesThis report illustrates the typical weather in Mehamn, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Mehamn. For each station, the records are corrected for the elevation difference between that station and Mehamn 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 Mehamn is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Mehamn and a given station. The stations contributing to this reconstruction are:
To get a sense of how much these sources agree with each other, you can view a comparison of Mehamn and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. Other DataAll data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com . Maps are © OpenStreetMap contributors. DisclaimerThe information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. Please review our full terms contained on our Terms of Service page. |