Main Topic: Senate GOP Sends Trump Bill Handing Over Arctic Refuge to Big Oil via @commondreams.org On The Extreme Temperature Diary SAT 12/06/2025 At: guyonclimate.com +#climate and record temp reports @michaelemann.bsky.social @katharinehayhoe.com @bhensonweather.bsky.social @zacklabe.com

Monthly global climate data update from UAH for the month of November 2025. Third hottest month of November since 1979. datagraver.com/climate-data... #climate

Main Topic: AI Will Only Intensify Climate Change. The Tech Moguls Don’t Care via @thenation.com On The Extreme Temperature Diary FRI 12/05/2025 At: guyonclimate.com + #climate and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @zcolman.bsky.social @brianmchugh.bsky.social

Main Topic: AI Will Only Intensify Climate Change. The Tech Moguls Don’t Care via @thenation.com On The Extreme Temperature Diary FRI 12/05/2025 At: guyonclimate.com + #climate and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @zcolman.bsky.social @brianmchugh.bsky.social

European Summer in Winter? Not quite, but winter weather is not in sight over the next 2 weeks, as Europe blowtorches with temps surging to 10-15° C above normal. #Europe #weather #warm #winter #fyp

Main Topic: Private Companies Have Raised Millions to Block the Sun. What Could Go Wrong? via @washingtonpost.com On The Extreme Temperature Diary THU 12/04/2025 At: guyonclimate.com + #climate and record temp reports via @michaelemann.bsky.social @katharinehayhoe.com @drpauldorfman.bsky.social

Main Topic: Private Companies Have Raised Millions to Block the Sun. What Could Go Wrong? via @washingtonpost.com On The Extreme Temperature Diary THU 12/04/2025 At: guyonclimate.com + #climate and record temp reports via @michaelemann.bsky.social @katharinehayhoe.com @drpauldorfman.bsky.social

Coldest air on Earth today is in the US with temps up to 40 degrees below normal in the Midwest/ Great Lakes. Actual lows are as low as -20F there. Cold US is due to widespread relative warmth in the Arctic, with record low Arctic Sea Ice extent. This “warmth” displaces the polar cold pool south.

Main Topic: Trump Plans to Weaken Fuel Efficiency Rules for Cars and Trucks via @washingtonpost.com On The Extreme Temperature Diary WED 12/03/2025 At: guyonclimate.com +#climate #weather and record temp reports @michaelemann.bsky.social @katharinehayhoe.com @drpauldorfman.bsky.social

Main Topic: ‘Fighting for Our Lives’- Youth Sue to Block Utah Fossil Fuel Permits via @commondreams.org On The Extreme Temperature Diary TUE 12/02/2025 At: guyonclimate.com + #climate #weather + record temp reports @katharinehayhoe.com @michaelemann.bsky.social @zacklabe.com @cclsvn.bsky.social

Main Topic: Trump Plans to Weaken Fuel Efficiency Rules for Cars and Trucks via @washingtonpost.com On The Extreme Temperature Diary WED 12/03/2025 At: guyonclimate.com +#climate #weather and record temp reports @michaelemann.bsky.social @katharinehayhoe.com @drpauldorfman.bsky.social

Join CCNow’s Kyle Pope in conversation with leading voices in climate reporting and activism — @billmckibben.bsky.social, @sammyroth.bsky.social, @adamlmahoney.bsky.social, @amywestervelt.bsky.social — to discuss how reporters can deepen public understanding and hold power to account buff.ly/ZIku7VW

Main Topic: ‘Fighting for Our Lives’- Youth Sue to Block Utah Fossil Fuel Permits via @commondreams.org On The Extreme Temperature Diary TUE 12/02/2025 At: guyonclimate.com + #climate #weather + record temp reports @katharinehayhoe.com @michaelemann.bsky.social @zacklabe.com @cclsvn.bsky.social

On Giving Tuesday, there's no better climate cause than @csldf.org, the Climate Science Legal Defense Fund, csldf.org. They provide free legal and educational support to researchers facing harassment and intimidation, and have been record busy this year. I'm a founding board member.

Monday ice update - #Arctic sea ice extent is currently the *2nd* lowest on record (JAXA data) • about 770,000 km² below the 2010s mean • about 1,390,000 km² below the 2000s mean • about 2,010,000 km² below the 1990s mean • about 2,530,000 km² below the 1980s mean More zacklabe.com/arctic-sea-i...

Main Topic: Flooding Kills 1,000+ Across South Asia as Climate Crisis Fuels More Extreme Rain via @commondreams.org On The Extreme Temperature Diary MON 12/1/2025 At: guyonclimate.com + #climate #weather and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @brianmchugh.bsky.social

Main Topic: Flooding Kills 1,000+ Across South Asia as Climate Crisis Fuels More Extreme Rain via @commondreams.org On The Extreme Temperature Diary MON 12/1/2025 At: guyonclimate.com + #climate #weather and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @brianmchugh.bsky.social

After 9 straight years with a landfalling hurricane—and a record 5 straight (2020-2024) with a major hurricane landfall—the U.S. escaped any hurricane landfalls in 2025. With the unprecedented disarray affecting FEMA and NOAA, we were extremely fortunate not to be tested by a major hurricane!

Main Topic: My U.S. Average Temperature Forecast for Winter On The Extreme Temperature Diary SUN 11/30/2025 At: guyonclimate.com + #climate #weather + record temp reports @katharinehayhoe.com @michaelemann.bsky.social @doctorvive.bsky.social @brianmchugh.bsky.social @bernwoodsplacky.bsky.social

Main Topic: Revealed- Europe’s Water Reserves Drying Up Due to Climate Breakdown via @theguardian.com On The Extreme Temperature Diary SAT 11/29/2025 At: guyonclimate.com + #climate #weather and record temp reports @katharinehayhoe.com @brianmchugh.bsky.social @michaelemann.bsky.social

Main Topic: Can the World Address Climate Change Without the US? Via @motherjones.com @michaelemann.bsky.social On The Extreme Temperature Diary FRI 11/28/2025 At: guyonclimate.com + #climate #weather and record temp reports @katharinehayhoe.com @bhensonweather.bsky.social @zacklabe.com

Main Topic: Vietnam’s Year of Floods, Mud and Death via @nytimes.com On The Extreme Temperature Diary- THU 11/27/2025 At: guyonclimate.com + #climate and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @bhensonweather.bsky.social @zacklabe.com @brianmchugh.bsky.social

Main Topic: U.S. September/October 2025 Record Scoreboard and Climatological Review On The Extreme Temperature Diary FRI 11/21/2025 At: guyonclimate.com +#climate and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @doctorvive.bsky.social @climate.noaa.gov @zacklabe.com

Main Topic: Can the World Address Climate Change Without the US? Via @motherjones.com @michaelemann.bsky.social On The Extreme Temperature Diary FRI 11/28/2025 At: guyonclimate.com + #climate #weather and record temp reports @katharinehayhoe.com @bhensonweather.bsky.social @zacklabe.com

Main Topic: Vietnam’s Year of Floods, Mud and Death via @nytimes.com On The Extreme Temperature Diary- THU 11/27/2025 At: guyonclimate.com + #climate and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @bhensonweather.bsky.social @zacklabe.com @brianmchugh.bsky.social

Main Topic: 6 Democratic Governors Have Linked Arms with the GOP to Push Fossil Fuels via @truthout.org On The Extreme Temperature Diary WED 11/26/2025 At: guyonclimate.com + #climate #weather and record temp reports @katharinehayhoe.com @brianmchugh.bsky.social @doctorvive.bsky.social

Main Topic: A ‘Radical and Reckless’ LNG House Bill via @commondreams.org On The Extreme Temperature Diary TUE 11/25/2025 At: guyonclimate.com + #climate and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @brianmchugh.bsky.social @zacklabe.com @bhensonweather.bsky.social

Main Topic: 6 Democratic Governors Have Linked Arms with the GOP to Push Fossil Fuels via @truthout.org On The Extreme Temperature Diary WED 11/26/2025 At: guyonclimate.com + #climate #weather and record temp reports @katharinehayhoe.com @brianmchugh.bsky.social @doctorvive.bsky.social

Main Topic: A ‘Radical and Reckless’ LNG House Bill via @commondreams.org On The Extreme Temperature Diary TUE 11/25/2025 At: guyonclimate.com + #climate and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @brianmchugh.bsky.social @zacklabe.com @bhensonweather.bsky.social

"Reflections from #COP30" | I and other @upenn.edu climate experts offer our thoughts about the latest U.N. climate conference and where we go from here. Via @perryworldhouse.bsky.social & @kleinmanenergy.bsky.social: perryworldhouse.upenn.edu/news-and-ins...

Main Topic: Oil Producers, Not the Planet, Get a Win as COP30 Ends Via @nytimes.com On The Extreme Temperature Diary MON 11/24/2025 At: guyonclimate.com+ #climate #weather and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @brianmchugh.bsky.social @zacklabe.com

I've updated @climate.noaa.gov record report tallies and #climate data for #Australia here: guyonclimate.com/2019/07/02/n... guyonclimate.com/2022/05/11/n... guyonclimate.com/2022/06/15/n... Feel free to check and reuse my results for presentations. @katharinehayhoe.com @michaelemann.bsky.social

Main Topic: Oil Producers, Not the Planet, Get a Win as COP30 Ends Via @nytimes.com On The Extreme Temperature Diary MON 11/24/2025 At: guyonclimate.com+ #climate #weather and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @brianmchugh.bsky.social @zacklabe.com

The amount of solar-power capacity installed by China in Q1/Q2 2025 alone (256 gigawatts, ~ roughly 200 big coal plants) matches *all* the cumulative U.S. solar-power capacity installed thru Q2 2025 (260 gigawatts). We are watching the world leap past us. ember-energy.org/latest-updat...

My post today is a reminder that we need to spend a ton of money on adaptation for our new climate, based on a report issued in March on U.S. infrastructure needs. yaleclimateconnections.org/2025/11/u-s-...

Main Topic: Home Prices on a Warming Planet Via @nytimes.com On The Extreme Temperature Diary SUN 11/23/2025 At: guyonclimate.com +#climate #weather and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @doctorvive.bsky.social @brianmchugh.bsky.social @bhensonweather.bsky.social

A climate deal without explicit language calling for a fossil fuel phaseout is like a ceasefire without explicit language calling for a suspension of hostilities. #COP30

"We–and the planet–cannot afford another Bad COP."

A depraved and decadent Trump WH dinner for MBS was a stunning low for an American ruling class that's stopped pretending to carry a moral compass It was really a celebration of death - of democracy, of an overheating planet, and ultimately themselves. My new column www.inquirer.com/opinion/ceos...

Baked Atlanta! The SE and parts of #Florida baking today. Atlanta was 82, latest 82 on record. Heat persists through midweek.

We witnessed the warmest reading in recorded history so late in the season in my hometown of Atlanta SAT 11/22/2025. Prior 82°F reading was on 11/16/1958. More than 30 years ago, flurries were common here around Thanksgiving. What has changed?😜 @weatherprof.bsky.social @donsutherland1.bsky.social

We witnessed the warmest reading in recorded history so late in the season in my hometown of Atlanta SAT 11/22/2025. Prior 82°F reading was on 11/16/1958. More than 30 years ago, flurries were common here around Thanksgiving. What has changed?😜 @weatherprof.bsky.social @donsutherland1.bsky.social

Main Topic: End of Fossil Fuel Era Inches Closer Due to #Cop30 Deal? Via @theguardian.com On The Extreme Temperature Diary SAT 11/22/2025 At: guyonclimate.com + #climate #weather + record temp reports @katharinehayhoe.com @michaelemann.bsky.social @doctorvive.bsky.social @brianmchugh.bsky.social

Departures -- From the Norm; A Precipitous Report on Precipitation; The #COP30 Conflict; The Sustainable #Energy Report; Community Solar Wins; Europe Lags on #EnergyStorage. These stories and much more on @climateguyw.bsky.social 's Extreme Temperature Diary: guyonclimate.com/2025/11/21/e...

Main Topic: Keeping Promises on Renewables, Energy Efficiency and Methane ‘Would Avoid Nearly 1C of Global Heating’ via @theguardian.com On The Extreme Temperature Diary THU 11/20/2025 At: guyonclimate.com + #climate and record temp reports @katharinehayhoe.com @michaelemann.bsky.social

Main Topic: U.S. September/October 2025 Record Scoreboard and Climatological Review On The Extreme Temperature Diary FRI 11/21/2025 At: guyonclimate.com +#climate and record temp reports @katharinehayhoe.com @michaelemann.bsky.social @doctorvive.bsky.social @climate.noaa.gov @zacklabe.com

Poor bunnies...their phenology is completely mismatched this year because there is no snow anywhere. I hope they don't get wiped out by predators! Come on snow! bsky.app/profile/fish... #wx 🦊🌎 #climate

While the entire weather enterprise - it seems - is focused on extreme US cold - which may take weeks to materialize, the country has been roasting. Over the past 7 days 100s of heat records have been broken, and the nation as a whole has been ~4F above normal. +20F near the Ark-La-Tx!! 1/

We have a tendency in weather to focus on the shiny object. Right now that shiny object is the cold, which is elusive. The reality: over the past week, the US has seen a Blow Torch. 100s of heat records to just a dozen cold. The heat continues through midweek.

Some people ask me, why track record temperatures? More heat does not affect me, so why should I care? Because record warmth is a big symptom of the climate's health over the last few decades, giving us warning of what may come. Heed the drip drip drip coming into the Titanic. @katharinehayhoe.com