Top impacts from tomorrow's storm: 1) ❄️ 3-6"+ of slushy snow at/above 10k feet in the mountains. Could bring down leaves/branches. 2) 🌧️ 1"+ of rain possible in Denver, mostly tonight/tomorrow. 3) 🎢 Big temp drop (highs in the 50s in Denver) today-tomorrow #COwx

🌦️🥶 Cold front! Morning sunshine, but a cold front moves through later this AM. That'll drop temps and kick up winds, with afternoon showers/storms after 2p. 🌧️ A rainy, chilly day tomorrow with highs in the 50s in Denver, and mountain snow down to pass level (10k feet). #COwx

Short-range models were way east compared to the global models this morning...now they're aligned on a further west solution (higher impact). Higher confidence forecast now. #COwx

As I said this AM, this looks like the first good mountain snowstorm above 10k. The key passes look slick Tuesday night/Wed. AM. 6"+ of snow possible for the higher areas of RMNP/northern Front Range. And the higher foothills get their first flakes/dustings of the season. #COwx

Next weekend will probably be peak foliage for most of the high country - or whatever survives the Tuesday storm. #COwx

Tuesday looks like a chilly washout for Denver. 1"+ of rain possible tomorrow night/Tuesday. Highs stuck in the 50s. #COwx

Near-peak colors on the south side of Guanella Pass today (Abyss trail)! 📸: Matt Piechota #COwx

Pain

I also posted a few videos on our fall storm on my YouTube page: youtube.com/@bianchiweat...

Quick summary of our upcoming fall storm: #COwx

Some models (Euro below) showing 6”+ of snow potentially for the northern Front Range/Rocky NP. *If* that falls (not a guarantee) that could mess up fall foliage. Throw in 20-40 mph gusts tomorrow…might bring down some of that foliage. Worth a watch… #COwx

First big system of the fall for Colorado arrives tomorrow night-Tuesday. All rain in Denver, but snow may get as low as 8500-9000’ (higher foothills) on Tuesday. 1/2”-1” of rain and chilly (highs in the 50s) on Tuesday! #COwx

⛅️ Another warm day with partly cloudy skies and a few gusty showers and rumbles of thunder after 3p. Most stay dry. High near 80° once again. ⛈️ A sharp cold front moves in tomorrow morning, with widespread showers/storms tomorrow night and a chilly, rainy Tuesday. #COwx

Peak colors near the top of Berthoud Pass today! 📸: Connor Hagen #COwx

6:05p: A few gusty showers/rumbles of thunder north of Denver. Ominous looking skies, but generally more bark than bite. A brief shower maybe a rumble of thunder possible, most stay dry this evening. #COwx

⛅️ Lots of clouds today and a slight 20-30% chance for a brief gusty shower after 2p. Higher storm odds in the mountains. Warm again, with a high in the low 80s in Denver. ⛈️Similar tomorrow before storms on Monday, and a notable cooldown for Tuesday with more storms. #COwx

🌅 Happy last 7p sunset of 2025, Denver! We won’t have a 7p or later sunset again until March 8th. #COwx

Tomorrow's furcast comes from 9-year-old cat Misha, who's available for adoption from MaxFund! Misha is great with adults, but would do best in a home without children and other pets. He's a handsome gentleman, and his adoption information is below! #COwx

Tuesday looking cooler and wetter. Just brought up rain odds/lowered temps. Could be a near-washout Monday night/Tuesday if current trends hold up. #COwx

Probably dry in Denver tomorrow + Sunday, but could be pretty stormy on Monday, maybe Tuesday. Brief cooldown Tuesday before typical late September stuff from Wednesday on. #COwx

Find the napping corgi

Blue line on the graph below = Euro deterministic run (that's what your automated weather apps are showing). Note what an outlier that is. Ensemble mean = green line = far more realistic option. #COwx

Heads up Denver: your weather apps are a little out to lunch on Monday/Tuesday. An outlier euro run has a ton of rain here Monday/Tuesday…that’s very unlikely to happen. Most likely: some storms both Mon/Tue, highs in the upper 60s Tuesday. #COwx

🌡️ Warming up under mostly sunny skies, and highs spike into the low 80s in Denver (average high: 79°). Winds stay light. 🌤️ Staying dry and mild until at least Sunday, though we'll have a slight chance for storms on Sunday before more widespread storms on Monday. #COwx

Illy has tomorrow's furcast - It'll be pristine tomorrow morning in particular for a dog walk! Illy is a sweet 5-year-old who loves tummy rubs, and she jumps for joy when she meets new people! She's available for adoption from PawsCo - info below! #COwx

Denver upcoming fall/cold dates: 🌇Last 7p or later sunset of 2025: 1 day (Sep. 19) 🌡️ Average high drops below 70°: 18 days (Oct. 6) 🥶Average first freeze: 19 days (Oct. 7) ❄️Average first snow: 30 days (Oct. 18) 🌆 Last 6p or later sunset of 2025: 41 days (Oct. 29) #COwx

Shhh...Denver's average first snow is exactly one month away from today! ❄️❄️❄️ #COwx

Some small drought improvements in the mountains after last weekend's push of monsoon moisture. Nothing wild, but we'll take it. Still, about a third of the state (37%) remains in severe or worse drought. #COwx

Let's say Denver gets the Super Bowl! 🌡️ Denver average early Feb high: 44° / 19° ❄️ Also: about a 20-25% chance for snow on an early Feb. day. 🎢 Fun fact: 105° spread between our early Feb record high (80°, Feb 10, 2017) and our early Feb record low (-25°, Feb. 8, 1936). #COwx

70° and nothing but sunshine. Chamber of commerce weather. Denver showin' off! #COwx

Strong area of low pressure will get close to us early next week. Could mean a stormy Monday, and another taste of fall on Tuesday (highs in the 60s in Denver). Until then...warm and quiet with just a few mountain storms this weekend. #COwx

Down to 44° at DIA this morning, coolest morning since Sep 6 (43°), 2nd-coolest morning since May. #COwx

Meteorological dandruff + fall colors + sunrise = chef’s kiss

🥶 A mostly sunny but chilly start, with highs rebounding into the low 70s in Denver under sunny skies this afternoon. It stays dry today. 🌤️ Staying dry and warming up into the 80s tomorrow and this weekend, with no meaningful rain chances for the next week. #COwx

6:20p: Rockies and Red Rocks both delayed (again) for storms- stormy look to this evening unfortunately. May be a while until things clear out, esp at Red Rocks. #COwx

Rockies/Red Rocks tonight could get a storm again...bring the rain jacket if you're going to either. Coverage/intensity of storms should be lower today compared to yesterday, though. #COwx

Fall 🤝 winter. From Winter Park Resort this morning! 📸: @ashmart86 on X

Fort Collins had its rainiest day in over 4 months yesterday...and that's based on the (much) drier CSU site. Some parts of south Fort Collins saw as much as 1.32" of rain yesterday! #COwx

Really beneficial rain across the north metro area last night. Widespread 1/2"-1"+ totals there (esp near Fort Collins). Denver saw way less, with 0.1-0.25" generally (but it still helps)! Fort Collins saw about a full September's worth of rain yesterday. Good news! #COwx

Oh yeah… Rocky Mountain National Park is absolutely showing off this morning! Fresh snow at 11k and above in the mountains this morning! #COwx

🍂 A taste of fall! Partly cloudy, and highs will struggle to hit 70° today, with a 30% chance for afternoon showers and storms, mainly after 3pm. Lower severe risk compared to yesterday. 🌤️ Drying out but still cool tomorrow, warming back up Friday/this weekend. #COwx

Tons of lightning down south…what a stormy night! #COwx

8:45p: Stormy night in Denver! Another wave of showers/storms moving in, this one focusing more on the north metro area. Lightning, heavy rain the main issues once again. #COwx

That doesn’t look fun at ⁦‪Red Rocks‬⁩ - lots of lightning, heavy rain. Anyone there? What are you seeing? #COwx

Looks more like dark clouds than blue skies at Red Rocks right now (Johnny Blue Skies & The Dark Clouds are at Red Rocks tonight. And yes, I am hilarious)

Guessing this Rockies delay is gonna last a hot minute. Lots of lightning in/near downtown, and more on the way. #COwx

7:56p: Nighttime rumbler moving across Denver! Lightning, downpours main threats as this moves through central Denver. #COwx

Some delays but not too terrible at DIA at the moment. Should be OK-ish this evening. Delays mostly on inbounds. #COwx

Healthy rain totals on the south side of Fort Collins, with 3/4"+ in a few spots. CSU/central Fort Collins with considerably less rain, though (0.13" CSU). #COwx

It's loud in downtown Denver at the moment. We've had 5 lightning strikes within 2 miles of 9NEWS world HQs in the last 10-15 mins. #COwx