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Average Weather in Eau Claire Wisconsin, United States

In Eau Claire, the temperature typically varies from 8°F to 83°F over the course of the year, and is rarely below -13°F or above 91°F.

The warm season lasts for 121 days, from May 19 to September 17, with an average daily high temperature above 71°F. The hottest day of the year is July 19, with an average high of 83°F and low of 63°F.

The cold season lasts for 97 days, from November 27 to March 4, with an average daily high temperature below 36°F. The coldest day of the year is January 22, with an average low of 8°F and high of 24°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature with percentile bands, 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

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDecfrigidfrigidfreezingfreezingchillychillycoldcoldcoolcoolcomfortablecomfortablewarmwarm
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.

Sun

The length of the day in Eau Claire varies significantly over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 47 minutes of daylight; the longest day is June 21, with 15 hours, 36 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 5:19 AM on June 15, and the latest sunrise is 2 hours, 29 minutes later at 7:48 AM on November 4. The earliest sunset is at 4:24 PM on December 9, and the latest sunset is 4 hours, 31 minutes later at 8:56 PM on June 26.

Daylight saving time (DST) is observed in Eau Claire during 2017, starting in the spring on March 12, lasting 237 days, and ending in the fall on November 5.

Sunrise & Sunset with Twilight and Daylight Saving Time

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.

Clouds

In Eau Claire, 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 Eau Claire begins around June 8 and lasts for 134 days, ending around October 20. On July 28, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 71% of the time, and overcast or mostly cloudy 29% of the time.

The cloudier part of the year begins around October 20 and lasts for 231 days, ending around June 8. On February 5, the cloudiest day of the year, the sky is overcast or mostly cloudy 62% of the time, and clear, mostly clear, or partly cloudy 38% of the time.

Cloud Cover

clearerclearercloudiercloudiercloudiercloudier0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecFeb 562%Feb 562%Jul 2829%Jul 2829%Jun 846%Jun 846%Oct 2046%Oct 2046%overcastovercastpartly cloudypartly cloudymostly clearmostly clearclearclear
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 Eau Claire varies significantly throughout the year.

The wetter season lasts 181 days, from April 7 to October 5, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 42% on June 13.

The drier season lasts 184 days, from October 5 to April 7. The smallest chance of a wet day is 10% on February 2.

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 Eau Claire changes throughout the year.

Rain alone is the most common for 275 days, from March 4 to December 4. The highest chance of a day with rain alone is 42% on June 13.

Snow alone is the most common for 90 days, from December 4 to March 4. The highest chance of a day with snow alone is 8% on January 26.

Daily Chance of Precipitation

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 in the year. Eau Claire experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 289 days, from February 28 to December 14, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 18, with an average total accumulation of 4.1 inches.

The rainless period of the year lasts for 76 days, from December 14 to February 28. The least rain falls around January 25, with and average total accumulation of 0.2 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 in the year. Eau Claire experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 163 days, from November 2 to April 14, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 17, with an average total liquid-equivalent accumulation of 0.5 inches.

The snowless period of the year lasts for 202 days, from April 14 to November 2. The least snow falls around July 18, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

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.

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.

Eau Claire experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 99 days, from June 8 to September 15, during which time the comfort level is muggy, oppressive, or miserable at least 8% of the time. The muggiest day of the year is July 21, with muggy conditions 29% of the time.

The least muggy day of the year is December 9, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

muggymuggy0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecDec 90%Dec 90%Jul 2129%Jul 2129%Jun 88%Jun 88%Sep 158%Sep 158%miserablemiserablemuggymuggycomfortablecomfortabledrydry
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 Eau Claire experiences mildly seasonal variation over the course of the year.

The windier part of the year lasts for 245 days, from September 21 to May 24, with average wind speeds of more than 5.4 miles per hour. The windiest day of the year is April 2, with an average hourly wind speed of 6.4 miles per hour.

The calmer time of year lasts for 120 days, from May 24 to September 21. The calmest day of the year is August 3, with an average hourly wind speed of 4.4 miles per hour.

Average Wind Speed

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 Eau Claire varies throughout the year.

The wind is most often from the north for 76 days, from February 15 to May 2, with a peak percentage of 32% on March 8. The wind is most often from the south for 168 days, from May 2 to October 17 and for 16 days, from October 29 to November 14, with a peak percentage of 40% on September 5. The wind is most often from the west for 12 days, from October 17 to October 29 and for 93 days, from November 14 to February 15, with a peak percentage of 37% on December 30.

Wind Direction

WWNNSSWWSSWW0%20%40%60%80%100%JanFebMarAprMayJunJulAugSepOctNovDecwestwestsouthsoutheasteastnorthnorth
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).

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 very significant seasonal variation over the course of the year.

The brighter period of the year lasts for 108 days, from May 5 to August 21, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is July 4, with an average of 7.0 kWh.

The darker period of the year lasts for 106 days, from October 28 to February 11, with an average daily incident shortwave energy per square meter below 2.6 kWh. The darkest day of the year is December 16, with an average of 1.4 kWh.

Average Daily Incident Shortwave Solar Energy

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 Eau Claire are 44.811 deg latitude, -91.498 deg longitude, and 876 ft elevation (map ).

The topography within 2 miles of Eau Claire contains only modest variations in elevation, with a maximum elevation change of 253 feet, and an average elevation above sea level of 838 feet. Within 10 miles also contains only modest variations in elevation (466 feet). Within 50 miles contains very significant variations in elevation (1,096 feet).

The area within 2 miles of Eau Claire is covered by artificial surfaces (73%) and water (21%), within 10 miles by cropland (57%) and trees (26%), and within 50 miles by cropland (52%) and trees (44%).

Data Sources

This report illustrates the typical weather in Eau Claire, 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 Eau Claire.

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

The stations contributing to this reconstruction are: Chippewa Valley Regional Airport (87%, 6 kilometers, north), Menomonie, Menomonie Municipal Airport-Score Field (8%, 31 kilometers, west), Black River Falls Area Airport (1.9%, 81 kilometers, southeast), Winona Municipal Airport-Max Conrad Field (1.8%, 83 kilometers, south), and Marshfield Municipal Airport (1.2%, 105 kilometers, east).

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 .