Average Weather in January in Dunkirk Indiana, United States
The lowest daily average high temperature is 33°F on January 23.
Daily low temperatures decrease by 3°F, from 23°F to 20°F, rarely falling below 2°F or exceeding 37°F. The lowest daily average low temperature is 20°F on January 29.
For reference, on July 19, the hottest day of the year, temperatures in Dunkirk typically range from 65°F to 83°F, while on January 29, the coldest day of the year, they range from 20°F to 33°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 Dunkirk experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 61% throughout the month. The highest chance of overcast or mostly cloudy conditions is 62% on January 2.
The clearest day of the month is January 16, with clear, mostly clear, or partly cloudy conditions 40% of the time.
For reference, on January 2, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 62%, while on August 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 69%.
Cloud Cover Categories in January
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Dunkirk, the chance of a wet day over the course of January is gradually decreasing, starting the month at 22% and ending it at 18%.
For reference, the year's highest daily chance of a wet day is 41% on May 28, and its lowest chance is 18% on February 8.
Over the course of January in Dunkirk, the chance of a day with only rain decreases from 14% to 9%, the chance of a day with mixed snow and rain remains an essentially constant 3% throughout, and the chance of a day with only snow remains an essentially constant 5% throughout.
Probability of Precipitation in January
The average sliding 31-day rainfall during January in Dunkirk is decreasing, starting the month at 1.8 inches, when it rarely exceeds 3.8 inches or falls below 0.3 inches, and ending the month at 1.3 inches, when it rarely exceeds 2.7 inches or falls below 0.1 inches.
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 Dunkirk is essentially constant, remaining about 0.4 inches throughout, and rarely exceeding 1.1 inches or falling to 0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in January
Over the course of January in Dunkirk, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 46 minutes, implying an average daily increase of 1 minute, 32 seconds, and weekly increase of 10 minutes, 43 seconds.
The shortest day of the month is January 1, with 9 hours, 22 minutes of daylight and the longest day is January 31, with 10 hours, 8 minutes of daylight.
Hours of Daylight and Twilight in January
The latest sunrise of the month in Dunkirk is 8:03 AM on January 4 and the earliest sunrise is 13 minutes earlier at 7:50 AM on January 31.
The earliest sunset is 5:25 PM on January 1 and the latest sunset is 33 minutes later at 5:58 PM on January 31.
Daylight saving time is observed in Dunkirk during 2017, 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 6:10 AM and sets 15 hours, 3 minutes later, at 9:14 PM, while on December 21, the shortest day of the year, it rises at 8:00 AM and sets 9 hours, 17 minutes later, at 5:17 PM.
Sunrise & Sunset with Twilight in January
The chance that a given day will be muggy in Dunkirk is essentially constant during January, remaining around 0% throughout.
For reference, on July 23, the muggiest day of the year, there are muggy conditions 49% of the time, while on November 18, 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 Dunkirk is essentially constant during January, remaining within 0.2 miles per hour of 12.5 miles per hour throughout.
For reference, on January 15, the windiest day of the year, the daily average wind speed is 12.7 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 7.1 miles per hour.
The highest daily average wind speed during January is 12.7 miles per hour on January 15.
Average Wind Speed in January
Wind Direction in January
The growing season in Dunkirk typically lasts for 6.0 months (184 days), from around April 17 to around October 18, rarely starting before April 1 or after May 5, and rarely ending before September 29 or after November 6.
The month of January in Dunkirk 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 Dunkirk are essentially constant during January, remaining within 2°F of 2°F throughout.
Growing Degree Days in January
The average daily incident shortwave solar energy in Dunkirk is gradually increasing during January, rising by 0.6 kWh, from 1.8 kWh to 2.4 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 Dunkirk are 40.375 deg latitude, -85.209 deg longitude, and 942 ft elevation.
The topography within 2 miles of Dunkirk is essentially flat, with a maximum elevation change of 66 feet and an average elevation above sea level of 942 feet. Within 10 miles is essentially flat (200 feet). Within 50 miles contains only modest variations in elevation (620 feet).
The area within 2 miles of Dunkirk is covered by cropland (95%), within 10 miles by cropland (98%), and within 50 miles by cropland (93%).
This report illustrates the typical weather in Dunkirk 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 Dunkirk.
For each station, the records are corrected for the elevation difference between that station and Dunkirk 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 Dunkirk is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Dunkirk and a given station.
The stations contributing to this reconstruction are: Delaware County Regional Airport (56%, 22 kilometers, southwest); Marion Municipal Airport (21%, 42 kilometers, west); Darke County Airport (12%, 61 kilometers, east); and Fort Wayne International Airport (11%, 66 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .