October Weather in Step’anavan ArmeniaDaily high temperatures decrease by 13°F, from 67°F to 54°F, rarely falling below 43°F or exceeding 77°F. Daily low temperatures decrease by 10°F, from 42°F to 32°F, rarely falling below 25°F or exceeding 48°F. For reference, on July 29, the hottest day of the year, temperatures in Step’anavan typically range from 57°F to 80°F, while on January 23, the coldest day of the year, they range from 13°F to 31°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. 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. South Sanford, United States (5,354 miles away) is the far-away foreign place with temperatures most similar to Step’anavan (view comparison). CloudsThe month of October in Step’anavan experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 34% to 44%. The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 66% of the time. For reference, on April 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 52%, while on August 1, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 93%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Step’anavan, the chance of a wet day over the course of October is gradually increasing, starting the month at 12% and ending it at 14%. For reference, the year's highest daily chance of a wet day is 27% on April 30, and its lowest chance is 8% on January 4. Over the course of October in Step’anavan, the chance of a day with only rain remains an essentially constant 13% throughout, 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 1% throughout. 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 October in Step’anavan is essentially constant, remaining about 0.7 inches throughout, and rarely exceeding 1.6 inches or falling below 0.1 inches. The highest average 31-day accumulation is 0.8 inches on October 17. SunOver the course of October in Step’anavan, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 18 minutes, implying an average daily decrease of 2 minutes, 36 seconds, and weekly decrease of 18 minutes, 11 seconds. The shortest day of the month is October 31, with 10 hours, 27 minutes of daylight and the longest day is October 1, with 11 hours, 45 minutes of daylight. The earliest sunrise of the month in Step’anavan is 6:59 AM on October 1 and the latest sunrise is 33 minutes later at 7:32 AM on October 31. The latest sunset is 6:44 PM on October 1 and the earliest sunset is 45 minutes earlier at 5:59 PM on October 31. Daylight saving time is not observed in Step’anavan during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 5:30 AM and sets 15 hours, 8 minutes later, at 8:38 PM, while on December 21, the shortest day of the year, it rises at 8:24 AM and sets 9 hours, 13 minutes later, at 5:37 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. MoonThe figure below presents a compact representation of key lunar data for October 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 Step’anavan is essentially constant during October, remaining around 0% throughout. For reference, on August 3, the muggiest day of the year, there are muggy conditions 1% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time. 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 Step’anavan is gradually increasing during October, increasing from 5.1 miles per hour to 5.8 miles per hour over the course of the month. For reference, on January 18, the windiest day of the year, the daily average wind speed is 8.4 miles per hour, while on September 27, the calmest day of the year, the daily average wind speed is 5.0 miles per hour. The wind direction in Step’anavan during October is predominantly out of the east from October 1 to October 23 and the west from October 23 to October 31. 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 Step’anavan typically lasts for 5.5 months (166 days), from around April 30 to around October 13, rarely starting before April 10 or after May 18, and rarely ending before September 25 or after November 2. During October in Step’anavan, the chance that a given day is within the growing season is very rapidly decreasing falling from 80% to 12% over the course of the month. 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 Step’anavan are gradually increasing during October, increasing by 103°F, from 1,993°F to 2,095°F, over the course of the month. 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 Step’anavan is decreasing during October, falling by 1.4 kWh, from 4.6 kWh to 3.1 kWh, over the course of the month. TopographyFor the purposes of this report, the geographical coordinates of Step’anavan are 41.010 deg latitude, 44.385 deg longitude, and 4,610 ft elevation. The topography within 2 miles of Step’anavan contains very significant variations in elevation, with a maximum elevation change of 1,427 feet and an average elevation above sea level of 4,735 feet. Within 10 miles contains very significant variations in elevation (5,915 feet). Within 50 miles also contains extreme variations in elevation (12,575 feet). The area within 2 miles of Step’anavan is covered by cropland (40%), trees (35%), grassland (14%), and shrubs (11%), within 10 miles by trees (47%) and cropland (36%), and within 50 miles by trees (41%) and cropland (26%). Data SourcesThis report illustrates the typical weather in Step’anavan, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Step’anavan. For each station, the records are corrected for the elevation difference between that station and Step’anavan 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 Step’anavan is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Step’anavan 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 Step’anavan 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. |