September Weather in Inndyr Norway
Daily high temperatures decrease by 7°F, from 57°F to 50°F, rarely falling below 44°F or exceeding 66°F.
Daily low temperatures decrease by 5°F, from 48°F to 43°F, rarely falling below 36°F or exceeding 54°F.
For reference, on July 26, the hottest day of the year, temperatures in Inndyr typically range from 51°F to 61°F, while on February 4, the coldest day of the year, they range from 26°F to 33°F.
Average High and Low Temperature in September in Inndyr
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. 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 September in Inndyr
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The month of September in Inndyr experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 63% to 68%.
The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 37% of the time.
For reference, on January 15, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 78%, while on May 28, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 44%.
Cloud Cover Categories in September in Inndyr
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 Inndyr, the chance of a wet day over the course of September is increasing, starting the month at 47% and ending it at 52%.
For reference, the year's highest daily chance of a wet day is 57% on December 10, and its lowest chance is 34% on June 17.
Probability of Precipitation in September in Inndyr
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 September in Inndyr is increasing, starting the month at 4.3 inches, when it rarely exceeds 7.2 inches or falls below 1.7 inches, and ending the month at 5.3 inches, when it rarely exceeds 9.1 inches or falls below 2.1 inches.
Average Monthly Rainfall in September in Inndyr
Due to its extreme latitude, Inndyr experiences polar day (also known as the midnight Sun) during the summer. 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 September.
Over the course of September in Inndyr, the length of the day is very rapidly decreasing. From the start to the end of the month, the length of the day decreases by 3 hours, 35 minutes, implying an average daily decrease of 7 minutes, 24 seconds, and weekly decrease of 51 minutes, 50 seconds.
The shortest day of the month is September 30, with 11 hours, 21 minutes of daylight and the longest day is September 1, with 14 hours, 55 minutes of daylight.
Hours of Daylight and Twilight in September in Inndyr
The earliest sunrise of the month in Inndyr is 5:34 AM on September 1 and the latest sunrise is 1 hour, 38 minutes later at 7:12 AM on September 30.
The latest sunset is 8:30 PM on September 1 and the earliest sunset is 1 hour, 57 minutes earlier at 6:33 PM on September 30.
Daylight saving time is observed in Inndyr during 2021, but it neither starts nor ends during September, so the entire month is in daylight saving time.
Sunrise & Sunset with Twilight and Daylight Saving Time in September in Inndyr
The figure below presents a compact representation of key lunar data for September 2021. 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.
Moon Rise, Set & Phases in September in Inndyr
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 Inndyr is essentially constant during September, remaining around 0% throughout.
For reference, on July 6, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in September in Inndyr
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Inndyr is rapidly increasing during September, increasing from 8.7 miles per hour to 10.8 miles per hour over the course of the month.
For reference, on January 23, the windiest day of the year, the daily average wind speed is 15.0 miles per hour, while on July 30, the calmest day of the year, the daily average wind speed is 7.3 miles per hour.
Average Wind Speed in September in Inndyr
The hourly average wind direction in Inndyr throughout September is predominantly from the south, with a peak proportion of 48% on September 26.
Wind Direction in September in Inndyr
Inndyr 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 Inndyr is gradually decreasing during September, falling by 3°F, from 54°F to 51°F, over the course of the month.
Average Water Temperature in September in Inndyr
Definitions 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 Inndyr typically lasts for 5.7 months (173 days), from around April 27 to around October 17, rarely starting before April 6 or after May 19, and rarely ending before September 25 or after November 8.
The month of September in Inndyr is more likely than not fully within the growing season, with the chance that a given day is in the growing season decreasing from 100% to 84% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in September in Inndyr
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
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 Inndyr are gradually increasing during September, increasing by 62°F, from 522°F to 584°F, over the course of the month.
Growing Degree Days in September in Inndyr
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 Inndyr is rapidly decreasing during September, falling by 1.5 kWh, from 2.8 kWh to 1.3 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in September in Inndyr
For the purposes of this report, the geographical coordinates of Inndyr are 67.034 deg latitude, 14.027 deg longitude, and 30 ft elevation.
The topography within 2 miles of Inndyr contains very significant variations in elevation, with a maximum elevation change of 1,581 feet and an average elevation above sea level of 253 feet. Within 10 miles contains very significant variations in elevation (4,331 feet). Within 50 miles also contains extreme variations in elevation (5,709 feet).
The area within 2 miles of Inndyr is covered by water (49%) and trees (32%), within 10 miles by water (42%) and trees (19%), and within 50 miles by water (51%) and sparse vegetation (16%).
This report illustrates the typical weather in Inndyr, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Inndyr.
For each station, the records are corrected for the elevation difference between that station and Inndyr 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 Inndyr is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Inndyr and a given station.
All 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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The 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.