Meteo Big Sky in settembre
Big Sky in settembre: piacevole, un po' di pioggia, con aria pulita — non il periodo migliore per andarci.
Aggiornato: settembre 2026 · medie climatiche dalla rianalisi ERA5
9º mese su 12 a Big Sky · 1362º su 1413 tra le destinazioni da visitare in settembre · comfort 23/100 (tier F)
- Giorno
- 19°C
- Notte
- 7°C
- Giorni di pioggia
- 10
- Sole
- 10.3 h
- Umidità
- 60%
- Ore di luce
- 13 h

Note dei viaggiatori su Big Sky in settembre
Big Sky-forum threads on September conditions describe a genuinely pleasant pattern, cold mornings giving way to sunny, comfortably warm afternoons, aspen groves beginning their color change and crowds noticeably thinner than peak summer. Posters are direct this doesn't rule out an early accumulation at higher elevation, entirely possible even while the valley floor stays green and mild, a real reminder of how much conditions vary by altitude. Regulars name hiking, mountain biking, fly fishing and horseback riding all still genuinely strong September activities, the cooler air a real relief after the intensity of midsummer. Layers are standing advice regardless of how warm the afternoon runs, given how sharply temperatures drop once the sun goes down. Posters call September a real sweet spot for anyone prioritizing scenery and quiet over guaranteed warm weather. The record: 19.4C days feeling like 18C, 7.2C nights, a notably high 9cm of fresh accumulation and 60 percent humidity.
Altri mesi a Big Sky
Big Sky-forum threads on an April visit describe closing as genuinely landing around the tenth or eleventh of the month, posters naming this timing as often falling near Easter. Regulars call steady late-season snowfall genuinely still standard, several posters naming warmer, longer days alongside notably thinner crowds as real advantages of visiting this late. Posters call the resort genuinely feeling local by April, several regulars naming this a real contrast to the busier winter peak. Regulars call spring corn snow genuinely some of the best value and conditions of the entire season, several threads naming this a real reason not to overlook April. Posters recommend Closing Weekend specifically if timing allows, several regulars calling this a real notable on-mountain event worth planning a trip around. The record: 6.6C days, -3.3C nights, 79.9mm across nearly 15 days and 72 percent humidity.
Big Sky-forum threads on a late May visit describe this as shoulder season, posters using it as a base for Yellowstone while asking whether local businesses would be open given the timing. Regulars call biking, horseback riding and rafting on the Gallatin River all real May options once conditions allow, several posters recommending these over anything snow-dependent this late in spring. Posters recommend checking the Big Sky and Bozeman Chamber event calendars directly, several regulars calling this the best way to confirm what's actually running during shoulder weeks. Regulars call lodging genuinely varied this time of year, ski-in options and condo complexes both mentioned as available even outside peak season. Posters recommend real flexibility around exact May plans, some businesses here still on reduced or seasonal schedules this early. The record: 11.8C days feeling like 10C, 1.2C nights, an extraordinarily high 93.8mm across over 16 days and 61 percent humidity.
Big Sky-forum threads on a July visit describe this as genuinely peak season, posters recommending the chairlift or gondola up the mountain for anyone wanting the views without a full hike. Regulars call Beehive Basin the standout hike close to town, Ousel Falls named the easier first outing for anyone easing into the altitude. Posters recommend a ranch experience or horseback outing as a genuine change of pace from the trail-heavy itinerary most visitors default to. Regulars call late July the calendar's busiest stretch, Music in the Meadows, the farmers market and the PBR Rodeo all real draws worth timing a trip around. Posters recommend real bear spray for hikes further from town like Upper Beehive, wildlife encounters here a genuine possibility. Regulars call the daytime warmth genuinely comfortable, evenings still cool enough for a real layer once the sun drops. The record: 25.7C days feeling like 25C, 12C nights, 38.4mm across over 10 days and 53 percent humidity.
Big Sky-forum threads on March skiing are consistently enthusiastic, posters calling snow conditions rarely a problem this time of year and early March frequently named among the best stretches of the entire season. Regulars describe peak snowpack as typically landing around the first week of March, conditions often surpassing January simply because more has accumulated by then. Posters call the freeze-thaw cycle that defines classic spring skiing as not yet fully underway in March, a real advantage over April. Regulars recommend early-to-mid March as the more dependable target, temperatures generally sitting comfortably in the twenties and thirties Fahrenheit. Posters describe days as noticeably longer and milder than deep winter without sacrificing snow quality. Regulars recommend checking conditions before an April trip. The record: 3.1C days feeling like -1C, -6.3C nights, a notably high 47.1cm of fresh accumulation and 74 percent humidity.
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Medie climatiche di Big Sky — settembre
Medie mensili dalla rianalisi ERA5. L'AQI è l'indice di qualità dell'aria USA medio del mese.
Folla a Big Sky in settembre
Quanto è affollato il luogo in sé: vacanze scolastiche e ferie di massa, i mesi segnalati dalla redazione e quanto il clima li rende ambiti. Mai incluso nel punteggio di comfort.
AffollatoSummer break in Stati Uniti d'America(stima)
Folla al massimoAffollatoMedia stagioneTranquillo
I mesi con il tempo migliore a Big Sky
In classifica secondo il punteggio di comfort climatico di questa destinazione durante l'anno: una cosa diversa da quanta folla c'è (vedi Folla qui sopra).
Clima discretoA Big Sky il tempo è al meglio da dicembre a febbraio.
Clima miglioreClima discretoClima più difficile
Cosa c'è in programma a Big Sky in settembre
Eventi stagionali ricorrenti, spettacoli naturali, chiusure e festività: selezionati e con fonte.
- Apertura
Yellowstone roads open
15 apr – 5 nov · di solitoStagione dei sentieriChiusureThe interior roads out of West Yellowstone are ploughed open in stages from mid-April and close again to cars in early November, after which it is snowcoach or nothing. Big Sky is an hour from that gate. Fonte ↗
- Festival
Music in the Mountains
1 giu – 10 set · di solitoFestival musicaleFree Thursday-evening concerts in Town Center park from early June to the start of September. Bring a blanket and something warm; the temperature drops the moment the sun goes behind Lone Peak. Fonte ↗
- Rischio
Wildfire smoke season
15 lug – 30 set · di solitoMost Augusts bring some smoke into the Gallatin Canyon from fires in Montana, Idaho and further west. The county issues air quality alerts, Lone Peak goes hazy, and hard hikes and lift-served biking are best moved to clear days. Fonte ↗
Qui vicino c'è qualcosa in programma
Entro 300 km da Big Sky, per una gita in giornata o un breve spostamento, con qualcosa in programma questo mese. Mai incluso nel punteggio di comfort.
- Bozeman51 kmGolden eagle migration15 set – 31 ott · di solitoStagione della faunabridgerraptorfest.org
- Parco nazionale di Yellowstone109 kmBeartooth Highway open22 mag – 12 ott · di solitoStagione dei sentierinps.gov
- Parco nazionale del Grand Teton171 kmAspen colour and the elk rut15 set – 10 ott · di solitoFoliage autunnale
Dove si trova Big Sky?
Big Sky in settembre — domande frequenti
- È un buon momento per visitare Big Sky in settembre?
- Big Sky in settembre: piacevole, un po' di pioggia, con aria pulita — non il periodo migliore per andarci. Per Big Sky è il mese n. 9 su 12 secondo il punteggio di comfort di SeasonMap (23/100).
- Che tempo fa a Big Sky in settembre?
- In settembre Big Sky ha una massima media di 19.4°C e una minima di 7.2°C, con circa 62.9 mm di pioggia distribuiti in circa 9.7 giorni piovosi.
- Com'è la qualità dell'aria a Big Sky in settembre?
- In settembre Big Sky ha un indice di qualità dell'aria USA (AQI) medio di circa 39.
- Nevica a Big Sky in settembre?
- In settembre a Big Sky cadono circa 9 cm di neve.
Entro 300 km: Bozeman: Golden eagle migration, verso 15 set – 31 ott; Yellowstone National Park: Beartooth Highway open, verso 22 mag – 12 ott.