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Average Weather in Union City Michigan, United States

In Union City, the summers are warm, the winters are freezing and windy, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 18°F to 82°F and is rarely below 1°F or above 90°F.

Temperature

The warm season lasts for 3.8 months, from May 24 to September 18, with an average daily high temperature above 72°F. The hottest day of the year is July 19, with an average high of 82°F and low of 63°F.

The cold season lasts for 3.2 months, from December 1 to March 6, with an average daily high temperature below 41°F. The coldest day of the year is January 29, with an average low of 18°F and high of 31°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in Union CityJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcoldcoolwarmfreezingcomfortablevery cold
The average hourly temperature, color coded into bands: 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 shaded overlays indicate night and civil twilight.

Clouds

In Union City, 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 Union City begins around May 24 and lasts for 5.4 months, ending around November 4. On August 26, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 67% of the time, and overcast or mostly cloudy 33% of the time.

The cloudier part of the year begins around November 4 and lasts for 6.6 months, ending around May 24. On January 8, the cloudiest day of the year, the sky is overcast or mostly cloudy 67% of the time, and clear, mostly clear, or partly cloudy 33% of the time.

Cloud Cover Categories

Cloud Cover Categories in Union CityclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 2667%Aug 2667%Jan 833%Jan 833%May 2450%May 2450%Nov 450%Nov 450%clearovercastmostly clearmostly cloudypartly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Union City varies throughout the year.

The wetter season lasts 6.8 months, from March 27 to October 19, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 37% on August 5.

The drier season lasts 5.2 months, from October 19 to March 27. The smallest chance of a wet day is 15% on January 29.

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 Union City changes throughout the year.

Rain alone is the most common for 12 months, from February 2 to January 19. The highest chance of a day with rain alone is 37% on August 5.

Snow alone is the most common for 2.0 weeks, from January 19 to February 2. The highest chance of a day with snow alone is 7% on January 21.

Daily Chance of Precipitation

Daily Chance of Precipitation in Union CityrainJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Aug 537%Aug 537%Jan 2915%Jan 2915%Jan 121%Jan 121%Mar 2726%Mar 2726%Oct 1926%Oct 1926%rainsnowmixed
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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. Union City experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Union City. The most rain falls during the 31 days centered around June 1, with an average total accumulation of 3.4 inches.

The least rain falls around January 29, with an average total accumulation of 0.7 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Snowfall

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. Union City experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 4.7 months, from November 15 to April 5, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 4, with an average total liquid-equivalent accumulation of 0.5 inches.

The snowless period of the year lasts for 7.3 months, from April 5 to November 15. The least snow falls around July 17, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in Union CitysnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 in2.5 in3.0 in3.5 inJan 40.5 inJan 40.5 inJul 170.0 inJul 170.0 inFeb 140.5 inFeb 140.5 inNov 150.1 inNov 150.1 inApr 50.1 inApr 50.1 in
The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.

Sun

The length of the day in Union City varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 7 minutes of daylight; the longest day is June 21, with 15 hours, 15 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in Union CityJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 15 minJun 2115 hr, 15 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 7 minDec 219 hr, 7 minDec 21nightnightday
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 6:04 AM on June 14, and the latest sunrise is 2 hours, 13 minutes later at 8:17 AM on November 4. The earliest sunset is at 5:08 PM on December 7, and the latest sunset is 4 hours, 12 minutes later at 9:20 PM on June 26.

Daylight saving time (DST) is observed in Union City 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

Sunrise & Sunset with Twilight and Daylight Saving Time in Union CityJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 146:04 AMJun 146:04 AM9:20 PMJun 269:20 PMJun 26Dec 75:08 PMDec 75:08 PM8:17 AMNov 48:17 AMNov 4Mar 12DSTMar 12DSTDSTNov 5DSTNov 5daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Humidity

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.

Union City experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.7 months, from May 30 to September 20, during which time the comfort level is muggy, oppressive, or miserable at least 10% of the time. The muggiest day of the year is July 28, with muggy conditions 41% of the time.

The least muggy day of the year is February 12, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in Union CitymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Feb 120%Feb 120%Jul 2841%Jul 2841%May 3010%May 3010%Sep 2010%Sep 2010%muggymuggydrydryoppressiveoppressivecomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Union City experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.3 months, from October 8 to May 18, with average wind speeds of more than 10.3 miles per hour. The windiest day of the year is January 15, with an average hourly wind speed of 12.9 miles per hour.

The calmer time of year lasts for 4.7 months, from May 18 to October 8. The calmest day of the year is August 4, with an average hourly wind speed of 7.8 miles per hour.

Average Wind Speed

Average Wind Speed in Union CitywindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mph14 mph16 mph18 mph20 mphJan 1512.9 mphJan 1512.9 mphAug 47.8 mphAug 47.8 mphOct 810.3 mphOct 810.3 mphMay 1810.3 mphMay 1810.3 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Union City varies throughout the year.

The wind is most often from the south for 1.6 months, from August 18 to October 7, with a peak percentage of 33% on October 3. The wind is most often from the west for 10 months, from October 7 to August 18, with a peak percentage of 43% on January 1.

Wind Direction

Wind Direction in Union CityWSWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%eastwestnorthsouth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Union City 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 water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.7 months, from July 5 to September 26, with an average temperature above 65°F. The day of the year with the warmest water is August 9, with an average temperature of 72°F.

The time of year with cooler water lasts for 4.9 months, from December 15 to May 13, with an average temperature below 43°F. The day of the year with the coolest water is March 5, with an average temperature of 35°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 5.9 kWh. The brightest day of the year is July 1, with an average of 7.0 kWh.

The darker period of the year lasts for 3.4 months, from November 2 to February 13, with an average daily incident shortwave energy per square meter below 2.6 kWh. The darkest day of the year is December 19, with an average of 1.5 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in Union CitybrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJul 17.0 kWhJul 17.0 kWhDec 191.5 kWhDec 191.5 kWhMay 55.9 kWhMay 55.9 kWhAug 225.9 kWhAug 225.9 kWhNov 22.6 kWhNov 22.6 kWhFeb 132.6 kWhFeb 132.6 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Union City are 42.067 deg latitude, -85.136 deg longitude, and 909 ft elevation.

The topography within 2 miles of Union City is essentially flat, with a maximum elevation change of 75 feet and an average elevation above sea level of 903 feet. Within 10 miles is essentially flat (253 feet). Within 50 miles contains only modest variations in elevation (656 feet).

The area within 2 miles of Union City is covered by cropland (87%) and artificial surfaces (10%), within 10 miles by cropland (83%) and trees (13%), and within 50 miles by cropland (73%) and trees (20%).

Data Sources

This report illustrates the typical weather in Union City, 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Union City.

For each station, the records are corrected for the elevation difference between that station and Union City 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 Union City is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Union City and a given station.

The stations contributing to this reconstruction are: Branch County Memorial Airport (40%, 16 kilometers, southeast); Brooks Field (21%, 25 kilometers, northeast); W K Kellogg Airport (17%, 28 kilometers, north); Kirsch Municipal Airport (12%, 37 kilometers, southwest); and Hree Rivers Municipal Dr Haines Airport (11%, 40 kilometers, west).

Other Data

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.

Disclaimer

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.