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Average Weather in Grandville Michigan, United States

In Grandville, the summers are warm and partly cloudy and the winters are freezing, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 19°F to 82°F and is rarely below 4°F or above 90°F.

The warm season lasts for 3.8 months, from May 23 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 64°F.

The cold season lasts for 3.3 months, from December 1 to March 10, with an average daily high temperature below 41°F. The coldest day of the year is January 29, with an average low of 19°F and high of 30°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 Grandville12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDecfreezingchillycoldcoolcomfortablewarm
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 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 Grandville, 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 Grandville begins around May 15 and lasts for 5.7 months, ending around November 6. On August 23, 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 6 and lasts for 6.3 months, ending around May 15. On January 8, the cloudiest day of the year, the sky is overcast or mostly cloudy 70% of the time, and clear, mostly clear, or partly cloudy 30% of the time.

Cloud Cover

Cloud Cover in Grandvilleclearercloudiercloudier0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJan 870%Jan 870%Aug 2333%Aug 2333%May 1551%May 1551%Nov 651%Nov 651%overcastmostly cloudypartly cloudymostly clearclear
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 Grandville varies throughout the year.

The wetter season lasts 8.4 months, from March 30 to December 10, with a greater than 25% chance of a given day being a wet day. The chance of a wet day peaks at 33% on September 21.

The drier season lasts 3.6 months, from December 10 to March 30. The smallest chance of a wet day is 17% on February 8.

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 Grandville changes throughout the year.

Rain alone is the most common for 10 months, from February 16 to December 31. The highest chance of a day with rain alone is 33% on September 21.

Snow alone is the most common for 1.5 months, from December 31 to February 16. The highest chance of a day with snow alone is 12% on January 14.

Daily Chance of Precipitation

Daily Chance of Precipitation in Grandvillesnowrain0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecSep 2133%Sep 2133%Feb 817%Feb 817%Jan 124%Jan 124%Mar 3025%Mar 3025%snowrain
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. Grandville experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Grandville. The most rain falls during the 31 days centered around September 23, with an average total accumulation of 3.2 inches.

The least rain falls around January 27, 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. Grandville experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 4.8 months, from November 11 to April 4, 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 9, with an average total liquid-equivalent accumulation of 0.7 inches.

The snowless period of the year lasts for 7.2 months, from April 4 to November 11. The least snow falls around July 21, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in Grandvillesnowsnow0.0 in0.5 in1.0 in1.5 in2.0 in2.5 in3.0 in3.5 inJanFebMarAprMayJunJulAugSepOctNovDecJan 90.7 inJan 90.7 inJul 210.0 inJul 210.0 inNov 110.1 inNov 110.1 inApr 40.1 inApr 40.1 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 Grandville varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 1 minute of daylight; the longest day is June 21, with 15 hours, 21 minutes of daylight.

Hours of Daylight and Twilight

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 6:03 AM on June 15, and the latest sunrise is 2 hours, 18 minutes later at 8:21 AM on November 4. The earliest sunset is at 5:08 PM on December 7, and the latest sunset is 4 hours, 17 minutes later at 9:25 PM on June 26.

Daylight saving time (DST) is observed in Grandville 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 Grandville2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDecJun 156:03 AMJun 156:03 AM9:25 PMJun 269:25 PMJun 26Dec 75:08 PMDec 75:08 PM8:21 AMNov 48:21 AMNov 4Mar 12DSTMar 12DSTDSTNov 5DSTNov 5daynightnightnightnight
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.

Grandville experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.5 months, from June 3 to September 18, 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 37% of the time.

The least muggy day of the year is February 24, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in Grandvillemuggy0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecFeb 240%Feb 240%Jul 2837%Jul 2837%Jun 310%Jun 310%Sep 1810%Sep 1810%miserablemiserablemuggymuggyhumidhumidcomfortablecomfortabledrydry
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 Grandville experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.3 months, from October 1 to May 10, with average wind speeds of more than 5.7 miles per hour. The windiest day of the year is January 12, with an average hourly wind speed of 7.1 miles per hour.

The calmer time of year lasts for 4.7 months, from May 10 to October 1. The calmest day of the year is August 3, with an average hourly wind speed of 4.3 miles per hour.

Average Wind Speed

Average Wind Speed in Grandvillewindywindy0 mph1 mph2 mph3 mph4 mph5 mph6 mph7 mph8 mph9 mph10 mph11 mphJanFebMarAprMayJunJulAugSepOctNovDecJan 127.1 mphJan 127.1 mphAug 34.3 mphAug 34.3 mphOct 15.7 mphOct 15.7 mphMay 105.7 mphMay 105.7 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 Grandville varies throughout the year.

The wind is most often from the south for 1.3 months, from August 26 to October 4 and for 5.0 days, from November 8 to November 13, with a peak percentage of 34% on November 10. The wind is most often from the west for 1.1 months, from October 4 to November 8 and for 9.4 months, from November 13 to August 26, with a peak percentage of 34% on November 2.

Wind Direction

Wind Direction in GrandvilleWSWW0%20%40%60%80%100%JanFebMarAprMayJunJulAugSepOctNovDecwestsoutheastnorth
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

Grandville 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 63°F. The day of the year with the warmest water is August 13, with an average temperature of 71°F.

The time of year with cooler water lasts for 5.0 months, from December 17 to May 16, with an average temperature below 43°F. The day of the year with the coolest water is March 6, 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 3.4 months, from May 5 to August 18, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest day of the year is July 1, with an average of 7.1 kWh.

The darker period of the year lasts for 3.5 months, from November 1 to February 15, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest day of the year is December 23, with an average of 1.3 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in Grandvillebrightdarkdark0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJanFebMarAprMayJunJulAugSepOctNovDecJul 17.1 kWhJul 17.1 kWhDec 231.3 kWhDec 231.3 kWhMay 56.0 kWhMay 56.0 kWhAug 186.0 kWhAug 186.0 kWhNov 12.5 kWhNov 12.5 kWhFeb 152.5 kWhFeb 152.5 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 Grandville are 42.910 deg latitude, -85.763 deg longitude, and 623 ft elevation.

The topography within 2 miles of Grandville contains only modest variations in elevation, with a maximum elevation change of 151 feet and an average elevation above sea level of 617 feet. Within 10 miles also contains only modest variations in elevation (440 feet). Within 50 miles contains only modest variations in elevation (676 feet).

The area within 2 miles of Grandville is covered by artificial surfaces (86%) and trees (12%), within 10 miles by artificial surfaces (52%) and cropland (39%), and within 50 miles by cropland (41%) and trees (29%).

Data Sources

This report illustrates the typical weather in Grandville, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Grandville.

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

The stations contributing to this reconstruction are: Gerald R. Ford International Airport (57%, 20 kilometers, east); West Michigan Regional Airport (28%, 33 kilometers, southwest); and Muskegon County Airport (16%, 48 kilometers, northwest).

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.