The wetter season lasts 6.4 months, from March 27 to October 7, with a greater than 26% chance of a given day being a wet day.
Within 10 miles also contains only modest variations in elevation (384 feet).
The climate here is classified as Dfa by the Köppen-Geiger system. Based on growing degree days alone, the first spring blooms in Ann Arbor should appear around April 16, only rarely appearing before April 1 or after April 30. and end?
On January 10, 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.
We report snowfall in liquid-equivalent terms. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.
Click on each chart for more information. The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.
The shaded overlays indicate night and civil twilight. Based on the tourism score, the best time of year to visit Ann Arbor for warm-weather activities is from mid June to early September. For the purposes of this report, the geographical coordinates of Ann Arbor are 42.278 deg latitude, -83.741 deg longitude, and 873 ft elevation. All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.
And when did most of the largest snowfalls occur? If the Ann Arbor area gets the 12-13 inches of snow the National Weather Service is predicting during tonight's blizzard, it won't be anywhere near the biggest snowfall in our history.. 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. Monthly averages Ann Arbor Longitude: -83.7456, Latitude: 42.223 Average weather Ann Arbor, MI - 48108.
The tables below give yearly averages for snowfall at cities, towns and parks in Michigan. Ann Arbor is normally free of snow every year from May to September.
The calmer time of year lasts for 4.9 months, from May 12 to October 7. Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
The average hourly temperature, color coded into bands.
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. 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.
Ann Arbor experiences significant seasonal variation in monthly rainfall.
The number of hours during which the Sun is visible (black line).
The windiest day of the year is January 15, with an average hourly wind speed of 12.8 miles per hour.
Ann Arbor is located near a large body of water (e.g., ocean, sea, or large lake).
1974. The wind is most often from the west for 12 months, from September 14 to September 3, with a peak percentage of 46% on January 1. Most days of snowfall in Ann Arbor result in just a skiff of less than an inch of fresh snow left on the ground. 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.
Ann Arbor experiences some seasonal variation in monthly liquid-equivalent snowfall. The estimated value at Ann Arbor is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Ann Arbor and a given station. 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. The warm season lasts for 3.7 months, from May 25 to September 16, with an average daily high temperature above 73°F.
The snowless period of the year lasts for 7.2 months, from April 10 to November 15.
The snowfall totals are annual averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center. Data Interval: Annual Weather Averages in Ann Arbor. An annual snowfall of 43.0 inches in Ann Arbor means that it is less snowy than most places in Michigan. The brightest day of the year is June 30, with an average of 7.0 kWh. The figure below presents a compact representation of key lunar data for 2020. When was the most recent large snowfall? The cloudier part of the year begins around October 31 and lasts for 7.0 months, ending around June 1. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. Ann Arbor climate summary The Ann Arbor lies on 273m above sea level In Ann Arbor, the climate is cold and temperate. Ann Arbor experiences significant seasonal variation in the perceived humidity.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. The numbers are for the total amount of snow and for how many days it snows at least 0.1 inches (0.25 centimetres).
Over the course of the year, the temperature typically varies from 17°F to 84°F and is rarely below 1°F or above 92°F.
The thin dotted line is the corresponding average liquid-equivalent snowfall. Rain falls throughout the year in Ann Arbor.
The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. The snowy period of the year lasts for 4.8 months, from November 15 to April 10, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The day of the year with the warmest water is August 3, with an average temperature of 75°F. The wind is most often from the south for 1.6 weeks, from September 3 to September 14, with a peak percentage of 30% on September 13.
The cold season lasts for 3.3 months, from November 30 to March 7, with an average daily high temperature below 41°F.
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. The day of the year with the coolest water is February 17, with an average temperature of 34°F. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed. Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The least snow falls around July 19, with an average total liquid-equivalent accumulation of 0.0 inches. The area within 2 miles of Ann Arbor is covered by artificial surfaces (98%), within 10 miles by cropland (51%) and artificial surfaces (30%), and within 50 miles by cropland (49%) and artificial surfaces (24%).
The transitions to and from daylight saving time are indicated by the 'DST' labels. The length of the day in Ann Arbor varies significantly over the course of the year.
The chance of a wet day peaks at 35% on June 14.
Time zones for airports and weather stations are provided by AskGeo.com .
Based on weather reports collected during 1985–2015. This report illustrates the typical weather in Ann Arbor, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. How Many Snowstorms Ann Arbor Gets. The least rain falls around January 29, with an average total accumulation of 0.7 inches.
From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight.
The rainfall in Ann Arbor is significant, with precipitation even during the driest month. In 2020, the shortest day is December 21, with 9 hours, 5 minutes of daylight; the longest day is June 20, with 15 hours, 17 minutes of daylight. Rain alone is the most common for 11 months, from February 17 to January 16. We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Within 50 miles contains only modest variations in elevation (801 feet). We assume no responsibility for any decisions made on the basis of the content presented on this site. To characterize how pleasant the weather is in Ann Arbor throughout the year, we compute two travel scores. The solar day over the course of the year 2020.
Livingston County Spencer J. Hardy Airport, MERRA-2 Modern-Era Retrospective Analysis. The topography within 2 miles of Ann Arbor contains only modest variations in elevation, with a maximum elevation change of 243 feet and an average elevation above sea level of 861 feet.
The highest chance of a day with snow alone is 8% on January 15. For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation.
The chance of wet days in Ann Arbor varies throughout the year. Daylight saving time (DST) is observed in Ann Arbor during 2020, starting in the spring on March 8, lasting 7.8 months, and ending in the fall on November 1.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F.
Ann Arbor experiences some seasonal variation in monthly liquid-equivalent snowfall. The most snow falls during the 31 days centered around February 10, with an average total liquid-equivalent accumulation of 0.6 inches. The coldest day of the year is January 29, with an average low of 17°F and high of 31°F.
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. The darkest day of the year is December 19, with an average of 1.5 kWh.
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). The windier part of the year lasts for 7.1 months, from October 7 to May 12, with average wind speeds of more than 10.4 miles per hour.
On August 22, 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 percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. Monthly: 1981-2010 normals History: 2007-2019 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 shaded overlays indicate night and civil twilight. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end. The thin dotted line is the corresponding average rainfall.
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