Average Weather in Aitkin Minnesota, United States
In Aitkin, the summers are long and warm; the winters are freezing, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 2°F to 80°F and is rarely below -21°F or above 88°F.
The warm season lasts for 4.0 months, from May 17 to September 16, with an average daily high temperature above 68°F. The hottest day of the year is July 18, with an average high of 80°F and low of 57°F.
The cold season lasts for 3.2 months, from November 26 to March 2, with an average daily high temperature below 33°F. The coldest day of the year is January 15, with an average low of 2°F and high of 21°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 Aitkin, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Aitkin begins around May 28 and lasts for 4.5 months, ending around October 12. On July 31, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 72% of the time, and overcast or mostly cloudy 28% of the time.
The cloudier part of the year begins around October 12 and lasts for 7.5 months, ending around May 28. On February 5, the cloudiest day of the year, the sky is overcast or mostly cloudy 64% of the time, and clear, mostly clear, or partly cloudy 36% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Aitkin varies significantly throughout the year.
The wetter season lasts 5.4 months, from April 23 to October 5, with a greater than 24% chance of a given day being a wet day. The chance of a wet day peaks at 41% on June 29.
The drier season lasts 6.6 months, from October 5 to April 23. The smallest chance of a wet day is 6% on February 3.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Aitkin changes throughout the year.
Rain alone is the most common for 8.5 months, from March 13 to November 26. The highest chance of a day with rain alone is 41% on June 29.
Snow alone is the most common for 3.5 months, from November 26 to March 13. The highest chance of a day with snow alone is 7% on December 29.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Aitkin experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 8.5 months, from March 12 to November 26, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 22, with an average total accumulation of 4.0 inches.
The rainless period of the year lasts for 3.5 months, from November 26 to March 12. The least rain falls around January 26, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall
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. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Aitkin experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 6.2 months, from October 23 to April 28, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around March 5, with an average total liquid-equivalent accumulation of 0.4 inches.
The snowless period of the year lasts for 5.8 months, from April 28 to October 23. The least snow falls around July 16, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Aitkin varies significantly over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 34 minutes of daylight; the longest day is June 21, with 15 hours, 50 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:21 AM on June 15, and the latest sunrise is 2 hours, 40 minutes later at 8:01 AM on November 4. The earliest sunset is at 4:27 PM on December 10, and the latest sunset is 4 hours, 45 minutes later at 9:12 PM on June 25.
Daylight saving time (DST) is observed in Aitkin during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
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.
Aitkin experiences some seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.3 months, from June 7 to September 15, during which time the comfort level is muggy, oppressive, or miserable at least 7% of the time. The muggiest day of the year is July 18, with muggy conditions 28% of the time.
The least muggy day of the year is December 7, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
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 Aitkin experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 8.5 months, from September 11 to May 25, with average wind speeds of more than 6.0 miles per hour. The windiest day of the year is April 2, with an average hourly wind speed of 6.9 miles per hour.
The calmer time of year lasts for 3.5 months, from May 25 to September 11. The calmest day of the year is July 31, with an average hourly wind speed of 5.2 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Aitkin varies throughout the year.
The wind is most often from the north for 4.1 months, from January 5 to May 9, with a peak percentage of 34% on February 16. The wind is most often from the south for 4.9 months, from May 9 to October 7; for 1.6 weeks, from October 10 to October 21; and for 2.1 weeks, from October 30 to November 14, with a peak percentage of 38% on August 27. The wind is most often from the west for 3.0 days, from October 7 to October 10; for 1.3 weeks, from October 21 to October 30; and for 1.7 months, from November 14 to January 5, with a peak percentage of 32% on October 25.
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 experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.5 months, from May 5 to August 22, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is July 10, with an average of 7.0 kWh.
The darker period of the year lasts for 3.5 months, from October 27 to February 12, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest day of the year is December 20, with an average of 1.3 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Aitkin are 46.533 deg latitude, -93.710 deg longitude, and 1,204 ft elevation.
The topography within 2 miles of Aitkin contains only modest variations in elevation, with a maximum elevation change of 105 feet and an average elevation above sea level of 1,213 feet. Within 10 miles also contains only modest variations in elevation (213 feet). Within 50 miles contains only modest variations in elevation (761 feet).
The area within 2 miles of Aitkin is covered by trees (52%) and cropland (42%), within 10 miles by trees (69%) and cropland (16%), and within 50 miles by trees (72%) and cropland (13%).
This report illustrates the typical weather in Aitkin, 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 Aitkin.
For each station, the records are corrected for the elevation difference between that station and Aitkin 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 Aitkin is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Aitkin and a given station.
The stations contributing to this reconstruction are: Aitkin Municipal Airport (96%, 3.0 kilometers, northeast); Brainerd Lakes Regional Airport (2.4%, 35 kilometers, southwest); Longville Municipal Airport (1.0%, 63 kilometers, northwest); and Mora Municipal Airport (0.7%, 80 kilometers, southeast).
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.