Average Weather in January in Arma Kansas, United States
Daily high temperatures increase by 2°F, from 45°F to 46°F, rarely falling below 29°F or exceeding 63°F. The lowest daily average high temperature is 45°F on January 5.
Daily low temperatures are around 27°F, rarely falling below 10°F or exceeding 42°F. The lowest daily average low temperature is 26°F on January 22.
For reference, on July 21, the hottest day of the year, temperatures in Arma typically range from 71°F to 91°F, while on January 22, the coldest day of the year, they range from 26°F to 45°F.
Average High and Low Temperature in January
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. 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 January
The month of January in Arma experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 47% throughout the month.
The clearest day of the month is January 16, with clear, mostly clear, or partly cloudy conditions 54% of the time.
For reference, on February 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 50%, while on September 19, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
Cloud Cover Categories in January
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Arma, the chance of a wet day over the course of January is gradually increasing, starting the month at 13% and ending it at 16%.
For reference, the year's highest daily chance of a wet day is 46% on June 4, and its lowest chance is 12% on January 12.
Over the course of January in Arma, the chance of a day with only rain remains an essentially constant 9% throughout, the chance of a day with mixed snow and rain remains an essentially constant 2% throughout, and the chance of a day with only snow remains an essentially constant 3% throughout.
Probability of Precipitation in January
The average sliding 31-day rainfall during January in Arma is essentially constant, remaining about 1.2 inches throughout, and rarely exceeding 3.4 inches or falling below 0.1 inches.
The lowest average 31-day accumulation is 1.0 inches on January 20.
Average Monthly Rainfall in January
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 January in Arma is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.7 inches or falling below -0.0 inches.
The highest average 31-day liquid-equivalent accumulation is 0.3 inches on January 18.
Average Monthly Liquid-Equivalent Snowfall in January
Over the course of January in Arma, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 41 minutes, implying an average daily increase of 1 minute, 22 seconds, and weekly increase of 9 minutes, 33 seconds.
The shortest day of the month is January 1, with 9 hours, 38 minutes of daylight and the longest day is January 31, with 10 hours, 19 minutes of daylight.
Hours of Daylight and Twilight in January
The latest sunrise of the month in Arma is 7:33 AM on January 5 and the earliest sunrise is 11 minutes earlier at 7:23 AM on January 31.
The earliest sunset is 5:11 PM on January 1 and the latest sunset is 30 minutes later at 5:41 PM on January 31.
Daylight saving time is observed in Arma during 2018, but it neither starts nor ends during January, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:57 AM and sets 14 hours, 46 minutes later, at 8:43 PM, while on December 21, the shortest day of the year, it rises at 7:29 AM and sets 9 hours, 34 minutes later, at 5:04 PM.
Sunrise & Sunset with Twilight in January
The chance that a given day will be muggy in Arma is essentially constant during January, remaining around 0% throughout.
For reference, on July 22, the muggiest day of the year, there are muggy conditions 83% of the time, while on December 21, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in January
The average hourly wind speed in Arma is essentially constant during January, remaining within 0.1 miles per hour of 10.9 miles per hour throughout.
For reference, on April 1, the windiest day of the year, the daily average wind speed is 12.2 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 7.6 miles per hour.
Average Wind Speed in January
Wind Direction in January
The growing season in Arma typically lasts for 6.8 months (209 days), from around April 3 to around October 29, rarely starting before March 17 or after April 20, and rarely ending before October 11 or after November 19.
The month of January in Arma is reliably fully outside of the growing season.
Time Spent in Various Temperature Bands and the Growing Season in January
The average accumulated growing degree days in Arma are essentially constant during January, remaining within 13°F of 13°F throughout.
Growing Degree Days in January
The average daily incident shortwave solar energy in Arma is gradually increasing during January, rising by 0.6 kWh, from 2.3 kWh to 2.9 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in January
For the purposes of this report, the geographical coordinates of Arma are 37.544 deg latitude, -94.700 deg longitude, and 968 ft elevation.
The topography within 2 miles of Arma contains only modest variations in elevation, with a maximum elevation change of 141 feet and an average elevation above sea level of 976 feet. Within 10 miles also contains only modest variations in elevation (276 feet). Within 50 miles contains only modest variations in elevation (640 feet).
The area within 2 miles of Arma is covered by cropland (79%) and grassland (12%), within 10 miles by cropland (66%) and trees (21%), and within 50 miles by cropland (78%) and trees (14%).
This report illustrates the typical weather in Arma 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 Arma.
For each station, the records are corrected for the elevation difference between that station and Arma 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 Arma is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Arma and a given station.
The stations contributing to this reconstruction are: Atkinson Municipal Airport (90%, 11 kilometers, south); Chanute Martin Johnson Airport (6%, 71 kilometers, west); Clinton Memorial Airport (2.3%, 127 kilometers, northeast); and New Century AirCenter (1.9%, 144 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .