Wisconsin State Climatology Office

El Niño is likely to emerge soon (82% chance in May-July 2026) and continue through Northern Hemisphere winter 2026-27 (96% chance in December 2026 – February 2027). An #ElNino Watch remains in effect. #ENSO cpc.ncep.noaa.gov/products/analy…

🌪️ Dive into Wisconsin's tornado history with @WI_ClimateSCO! Discover causes, frequency, and lessons learned. 👇Read the full article linked below. go.wisc.edu/5q6fho

What a difference a month makes! ☔️ By this time last month, parts of Wisconsin had already received over 5 inches of rain! For many, the start of May has been bone-dry. #wiwx

The data is in... and it was the Midwest's 3rd wettest April on record since 1895 🌧️ The three wettest April months have all occurred in the past 15 years. See how your state stacked up here ➡️mrcc.purdue.edu/newclimate/sta…

Preview of our April climate stats by division table from our monthly summary that will be posted later this week 👀 7 of Wisconsin's 9 climate divisions had their wettest April, with the northeast recording its wettest Nov-April period. #wiwx

For perspective...🤯

The official numbers are out! We knew last month was going to rank as Wisconsin's wettest April on record, but the official state total smashes the previous record by more than 1"!😯 WI has broken a monthly precip record by more than an inch only once since 2000 (Dec 2015) #wiwx

It's here! It's here! Check out the NEW Wisconet Almanac pages! Lots of great new data providing context to the measurements we collect every day. wisconet.wisc.edu/stations/alman…

It's #WhereInTheWorld Wednesday! This peninsula in Wisconsin, seen by #NOAA21 on April 22, 2026, separates the southern part of the Green Bay from Lake Michigan. It is named after a treacherous water passage called "Porte Des Morts" that lies off the tip, where currents from the bay and lake converge.

NOAA researchers are collecting input in an effort to improve tornado forecasts. If you were impacted by one of the tornadoes across the area in April, please consider taking this short anonymous survey.

Today is National Weather Observers Day! 🙏 Thank all of you that observe, report, and maintain equipment in support of providing the weather observations that are so critical to weather forecasting across the world. If YOU would like to get involved, check out the links below! Skywarn: weather.gov/skywarn/ CoCoRaHS: cocorahs.org mPING: mping.nssl.noaa.gov COOP: weather.gov/coop/Overview

April was a historic month for Wisconsin weather on many levels — and of course, the stats and events mentioned here only scratch the surface. Stay tuned for our full April summary coming soon. You can look ahead to May in the latest weather outlook posted on our website! #wiwx

High chance of frost tonight as most of the state will see temperatures fall below 36° with light winds 🌱 The Wisconsin Frost/Freeze Decision Support page is a great way to evaluate local frost & freeze probabilities. weather.gov/mkx/FrostFreez…

Unseasonably chilly and windy conditions likely across much of the Midwest and East late next week. Freezing or near-freezing temperatures may damage sensitive crops across areas of the Midwest. In some areas, high winds could result in low wind chills not typically seen in May.

The Climate Observer Spring Newsletter is out now! We discuss the winter quarterly climate recap, including Chicago's recordbreaking winter tornadoes. Check it out ➡️ mailimages.purdue.edu/vo/?FileID=ff5…

After the state's rainiest April on record, it's no surprise that Wisconsin is now officially drought-free. Only a small area of abnormal dryness remains in the northwest corner of the state. #wiwx Meanwhile, 52% of the United States is experiencing various levels of drought.

🌧️ If you get excited to check your rain gauge, CoCoRaHS needs you! Wisconsin volunteers help create maps like this one by reporting daily rain, hail & snow. @WI_ClimateSCO explains how simple and impactful it is to join in: 👉 go.wisc.edu/1pg73f

Though there's still time for more rain in the next few days, this month already ranks as Wisconsin's wettest April on record. 🌧️ Click through to see what other cities have made the record books! #wiwx

We spoke with the @WI_ClimateSCO about the record breaking severe season happening in Wisconsin. WATCH: youtu.be/codHYl32S8o