June 2025 Graphical Weather Review: A slow and steady browning of the Front Range

June 2025 started out cool and rainy in the Front Range, but precipitation became much more scarce as the month wore on, with our landscape drying out and fire danger creeping up over time. The month also featured several rounds of damaging severe weather and multiple sizzling heat waves. Here’s a quick and colorful graphical recap of our weather during June and how it relates to climatology.

June 2025 Temperatures:

2025 90-Degree Day Timeline To-Date:

June 2025 Precipitation:

Precipitation totals during June 2025 across the Boulder-Denver Metro area

2025 Monsoon Rainfall To-Date

The 2024-2025 Snow Season is Over!

You can find a recap of all the winter storms from the 2024-2025 snow season HERE.

How does June 2025 fit into the last 75 years?

How does June 2025 fit into the last 12 months?

Latest Drought Tracker (as of July 1st)

June 2025 retold via our ~~Twitter~~ X timeline:

NOTICE: We are now on Threads and Bluesky! Come follow us there, too!

Northern Lights likely will be visible from Colorado Sunday night! 🌔🏳️‍🌈

There was a bigtime solar storm before sunrise Sunday, but it has waned somewhat today. Forecasts keep a good chance to see the aurora from northern Colorado again Sunday evening. Skies will be mostly clear… pic.twitter.com/kbx10gGbWF

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 1, 2025

This Week in Colorado Weather: Keep those umbrellas handy! ☔️

If you were hoping for a dry stretch for early June, you might need to adjust your plans—a widespread rain event Monday into Tuesday will be followed by more rain the rest of the week: https://t.co/Qctm9QFxHS #COWX pic.twitter.com/Ea34aRJvSN

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 2, 2025

Quite the dump of rain fell across the area overnight, with most seeing 0.4-1.2" of moisture! 💦

Drier weather will unfold today but we stay chilly in the 50s. T-storms return in earnest tomorrow.

This & more in today's *Premium* forecast update: https://t.co/BGIFfITHcv #COWx pic.twitter.com/PgvQ5DFzxb

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 3, 2025

🥵 Boulder soared to 89°F on Tuesday before storm clouds rolled in. Thus, our elusive first 90-degree day of 2025 will likely have to wait until the upcoming weekend when a hotter/drier airmass takes over. #Boulderwx #COWX

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 11, 2025

Thunderstorms brewing over the Foothills. Boulder likely to catch one or two very soon. #COwx pic.twitter.com/uLdqEOX3HY

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 11, 2025

❄️ But look on the bright side. There’s only 13 weeks until the chance of snow could (climatologically) return to the forecast in early September. #COwx #Colorado #Snow pic.twitter.com/wrwmWIgM4J

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 12, 2025

The next 10 days will be hot & dry in the Front Range, with only a squirt of rainfall. Our best chance appears to come around Tue/Wed of next week when a shortwave briefly knocks down the strong ridge.

The official start of summer next week will certainly feel like it! #COWX pic.twitter.com/G9NZVDy0ib

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 13, 2025

This Week in Colorado Weather: Severe storms precede a record-shattering heat wave ⛈️🌡️🥵

Record-breaking temperatures will be the story this week in the Front Range, though there’s plenty more to discuss: https://t.co/cfF7qo4Ml0 #COwx #Colorado #denver #Heatwave #Boulder pic.twitter.com/tgkYlHIwNm

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 16, 2025

Even though parts of eastern Boulder County have already hit 90° several times this month, the official climate station in #Boulder is still holding out—just barely. We topped out at 89° three times so far, including the last two days. We make another run at 90° today before a… pic.twitter.com/Fa8KtKcRwS

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 16, 2025

⚠️ HEADS UP: There's a good (yet uncertain) chance for quick-hitting severe thunderstorms Tuesday afternoon in the Front Range! ⛈️

We discuss the latest forecast details, including our lingering concerns, timing, & which areas stand the best chance to see big hail on Tuesday:… pic.twitter.com/LsfyfcitEm

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 17, 2025

Anyone in Lafayette float away last night from your 1 to 2" of largely unforecasted torrential rain? 🌊🚣‍♂️😆#COwx pic.twitter.com/qJoajdhWwQ

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 17, 2025

About a week behind schedule, but we did it! #COwx #Boulder #Boulderwx pic.twitter.com/zHZr7yoyWj

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 17, 2025

Massive Severe Thunderstorm Watch issued, including Boulder and Denver, through 5PM local time! #COWX pic.twitter.com/IOEA6pfcJd

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 17, 2025

Near Milliken, CO last night https://t.co/lVEF3SghrS

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 17, 2025

Brief heavy rain, lightning and small hail cutting across eastern Boulder County now! 😔 #cowx pic.twitter.com/u1hISqfCmT

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 17, 2025

Biggest hailstone found in the yard. 0.875", just smaller than a quarter Most much smaller. #cowx pic.twitter.com/q2sPbZcoZo

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 17, 2025

"Quick-hitting" was indeed the right adjective today. Intense but lasted only for a couple minutes. #cowx pic.twitter.com/PTpXQZNtGB

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 17, 2025

Enjoy this wonderful sunny Wednesday as a multi-day heatwave is looming…📈

The good news is models have trended slightly cooler with triple-digits looking less likely in the days ahead. This & more in today's *Premium* forecast discussion: https://t.co/rs17GZoy0B #COwx #Denver pic.twitter.com/OmTHLqGn8x

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 18, 2025

Colorado Forecast Update: Fire danger will accompany the record heatwave this weekend 📈🌡️🔥

We've got the latest details on exactly how hot it will get, when fire danger will be highest, when temps will relax, & our next (distant) chance of rain: https://t.co/si11u86cdy #COwx pic.twitter.com/PCoTkfBdPk

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 19, 2025

100° not looking overly likely in Boulder from this weekend's heatwave, though Friday will give us the best shot. 98 to 99°F is forecast.

There's a pretty good chance that other parts of eastern Boulder County and the broader Denver Metro will reach 100° at least once! #COwx pic.twitter.com/73IiJu5fzt

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 19, 2025

It's a hot one out there! We briefly hit 99.7°F at our station a little bit ago. We're rounding up to 100°!

These are the high temperatures so far Friday through 3PM… #COwx pic.twitter.com/CKIHezB260

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 20, 2025

🏆 New record high set yesterday in Boulder for June 20th: 98°F

Happy Summer!

#COwx #Boulder pic.twitter.com/0iC8BVU0yV

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 21, 2025

Saturday's temperatures came up just shy of daily records for June 21st…

Boulder: 97°, record 99° (2016)
Denver, 98°, record 99° (2007)#COWX

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 22, 2025

This final day of our heatwave will be cooler as the hottest air moves away from Colorado to the northeast. Highs will be in the lower 90s.

Happy 🌞-Day, Boulder! #cowx pic.twitter.com/RYBLM71go1

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 22, 2025

You may wonder how it's 15 degrees colder this morning than yesterday. Let's just call is magic! 😉 pic.twitter.com/398ofJNgFd

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 22, 2025

🌩️ Relatively tame thunderstorms moving through Denver and Boulder right now. 1" hail down towards Parker. #cowx pic.twitter.com/Ll3LhFjV7i

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 24, 2025

Tornado-warned storm crossed I70 west of Bennett a bit ago. Doesn't look to have put down any funnels and rotation is fizzling out #COwx pic.twitter.com/UJynLX5HOY

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 24, 2025

Well that escalated quickly… #cowx pic.twitter.com/L77KQrWTXs

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 26, 2025

Torrential rain and lightning has delayed the Rockies game at Coors Field #cowx pic.twitter.com/GOnUBh4X56

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 26, 2025

It's a beautiful Friday in Colorado at 13,400 feet! 🏔️ #cowx pic.twitter.com/wPOM0hDzxJ

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 27, 2025

⚠️ SEVERE THUNDERSTORM WATCH ISSUED ACROSS NORTHEAST COLORADO ⛈️

* Includes entire Front Range along/east of Interstate 25, including Denver. Does not include Boulder.

* Effective this Sunday afternoon and evening until 900 PM MDT. Though Denver area risk should be done by 600… pic.twitter.com/sqK249I14P

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 29, 2025

This Week in #Colorado Weather: #Monsoon Moisture Begins to Return 🔄⛈️

Monsoon season kicks off right on time this week, bringing a steady stream of moisture from Mexico northward. While daily storm chances are on tap, coverage looks hit-or-miss: https://t.co/EdbHQDaBoO #COwx pic.twitter.com/wEXDmeq8UB

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 30, 2025

The proposed 2026 budget for NOAA includes significant funding cuts that would deeply affect operations in Boulder. Scientists based here contribute vital research in atmospheric and ocean sciences, advancing our ability to understand and predict weather patterns.

The ripple… pic.twitter.com/tXbjtDacs8

— BoulderCAST Weather 🏔️⛈️ (@BoulderCAST) June 30, 2025

Our top posts of June 2025

Colorado Forecast Update: Fire danger will accompany the record heatwave this weekend

Forecast Update: Tracking potential quick-hitting severe thunderstorms Tuesday afternoon!

May 2025 Graphical Weather Review: Lush landscapes, Foothills snow, and tornadoes, oh my!

This Weekend in Colorado Weather: Storms decline as the Front Range begins a sizzling heatwave

BoulderCAST Daily – Sun 06/08/25 | Isolated supercells in the cards today, mainly after 4PM

This Weekend in Colorado Weather: A few hot & dry days before monsoon moisture begins to flow

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Ben Castellani

Ben grew up in southwestern Pennsylvania and holds both a bachelor's and a master's degree in Meteorology, the latter being from CU Boulder. His hometown received nearly three feet of snow from the Storm of the Century back in March of 1993, sparking his initial interest in impactful weather. Ben currently works on remote sensing and data analysis software at NV5 Geospatial Software in Boulder.