アスペン 12月の天気

アスペンの12月:極寒、ときどき雨、空気がきれい — 訪れるのに絶好の時期。

2026年9月更新 · ERA5再解析による気候平年値

アスペンAspen, United States🇺🇸 アメリカ合衆国 · ロッキー山脈 · スキー87
  1. 931月
  2. 902月
  3. 823月
  4. 614月
  5. 345月
  6. 186月
  7. 127月
  8. 148月
  9. 209月
  10. 4310月
  11. 7411月
  12. 8712月

アスペンでは12か月中3位 · 12月に訪れたい旅行先で1413か所中196位 · 快適スコア87/100(Aランク)

日中
2°C
-10°C
雨の日
9
日照
7.3 h
湿度
72%
日の長さ
10 h
アスペン(アメリカ合衆国)
写真: Ravenswood Photography · Pexels

12月のアスペンについての旅行者の声

Aspen-forum threads on mid-December conditions are candid that early-season snow varies a lot year to year - some Decembers arrive with a genuine mid-winter base already in place, others run noticeably thin with only a portion of terrain open by mid-month. Posters recommend checking a live snow report rather than relying on how a given December performed in past years, since the pattern here is called genuinely inconsistent this early in the season. Temperatures are expected to sit below freezing as the norm regardless of snow totals, proper insulated layers standing advice for any December trip. Regulars call intermediate terrain generally the most reliably open early in the season, with the more advanced runs often waiting on additional natural snowfall or continued snowmaking before opening fully. The record: a frigid 2C by day dropping to -10C at night, a notably high 74.9cm of fresh snowfall and 72 percent humidity.
AspenDecemberRegular · 12月 · 3日前 · Tripadvisorで続きを読む ↗

アスペンのほかの月

Aspen-forum threads on an April visit describe Aspen Mountain and Snowmass as typically staying open to around April twentieth, posters naming Buttermilk as closing earlier and Highlands roughly a week before, though Highlands can extend on weekends after a fresh dump. Regulars call spring days here genuinely bluebird, several posters naming softening afternoon corn snow and fewer crowds as real advantages over peak winter. Posters call closing-day traditions a real feature of the season's end, several regulars naming Bacon Appreciation Day at Buttermilk and Hawaiian shirts on Aspen Mountain as standard send-offs. Regulars call real sun protection genuinely necessary despite the cold air, several threads warning glare off remaining snow catches visitors off guard. Posters recommend checking closing dates before an April trip, several regulars calling this standard given how much they vary. The record: 11.2C days, -2.5C nights, 58.4mm across nearly 9 days and 65 percent humidity.
AspenAprilRegular · 4月 · 2日前 · Tripadvisorで続きを読む ↗
Aspen-forum threads on a June visit describe early June as genuinely quiet compared with later in the month, posters calling the transition from lingering cover to wildflowers still underway at the start. Regulars call higher elevations capable of holding real accumulation well into June depending on the season's snowpack. Posters recommend Maroon Bells as a real must, though parking requires taking a shuttle bus this time of year rather than driving directly. Regulars call Aspen genuinely pricier than many comparable mountain towns, summer visitors describing it as aimed at a wealthier crowd. Posters recommend hiking and biking as strong June options once the month gets fully underway, conditions considered reliable by mid-month. The record: 23.3C days feeling like 24C, 7C nights, 26.4mm across nearly 5 days and 38 percent humidity.
AspenJuneRegular · 6月 · 3日前 · Tripadvisorで続きを読む ↗
Aspen-forum threads on early March describe conditions as genuinely excellent by seasonal standards, posters calling this stretch through mid-March the best combination of deep base and manageable crowds before Spring Break arrives. Regulars call the snow base near its peak for the season, expert terrain still holding real texture with long mogul runs not yet groomed flat. Posters describe daytime readings in town as comfortably mild while mid-mountain stays genuinely cold, a proper shell layer standing advice for the upper lifts regardless of how warm Aspen itself feels. Regulars call March hard to predict, some years delivering the best skiing of the season. Posters recommend booking before Spring Break hits if flexible, crowds climbing considerably once that window opens. Regulars call Aspen and Snowmass both worth checking for the better conditions on a given day. The record: 6.4C days feeling like 3C, -6.3C nights, 72.3mm across over 10 days and 69 percent humidity.
AspenMarchRegular · 3月 · 3日前 · Tripadvisorで続きを読む ↗
Aspen-forum threads on Maroon Bells and Independence Pass conditions describe September mornings as clear, crisp and genuinely gorgeous, most days comfortable in the low seventies Fahrenheit with plenty of sunshine. Posters call a brief afternoon shower a near-daily feature, the odds rising as the day wears on. Regulars are direct nights can plunge into the thirties and forties, and posters describe real accumulation as entirely possible mid-month, one visitor reporting a night with a genuine dusting during an otherwise mild week. Posters recommend real layers covering the range from cold mornings to a warm midday. Regulars call the changing aspen groves the reason locals name September their favorite month. Posters recommend checking current pass conditions before a high-elevation drive given how quickly things can turn. The record: 21.7C days feeling like 20C, 5.9C nights, a notably high 3cm of fresh accumulation and 55 percent humidity.
AspenSeptemberRegular · 9月 · 3日前 · Tripadvisorで続きを読む ↗

地図のアスペンのカードから自分のメモを追加できます。

アスペンの気候平年値 — 12月

日中の最高気温2°C / 36°F🥶 極寒
夜の最低気温-10°C / 14°F
体感温度(最高)-2°C / 28°F
降水量55 mm / 2.2 in🌦 ときどき雨
雨の日数9日
湿度72%💧 多湿
露点-10°C / 14°F
日照7.3時間/日
日の長さ9.5時間
11 km/h / 7 mph
降雪量74.9 cm / 29.5 in
大気質(US AQI)46🍃 良好

ERA5再解析による月平均値です。AQIはその月の平均US AQI(米国大気質指数)です。

12月のアスペンの混雑

その場所自体の混み具合 — 学校休暇や大型連休、編集部がタグ付けした月、そして天気の良さによる人気の高さ。快適スコアには含まれません。

ピークの混雑Christmas and New Year peak、アメリカ合衆国のWinter / Christmas break、主な訪問国のうち2か国で学校休暇(推定)

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ピークの混雑混雑ショルダーシーズン閑散

アスペンの天気が良い月

この旅行先自身の一年間の快適スコアでランキングしています — 混み具合とは別のものです(上の「混雑」を参照)。

天気が最高アスペンの天気がピークを迎えるのは12月〜2月で、特に良いのは1月ごろです。

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天気が最高天気はまずまず天気が厳しい

12月のアスペンのイベント

毎年の季節のイベント、自然の見どころ、休業、祝日 — 厳選し出典を明記しています。

  • 休業

    Independence Pass closed

    11月1日〜5月21日 · 例年

    CO 82 over the pass shuts for the winter around the first serious storm in November and reopens the Thursday before Memorial Day. Until then the drive in from Denver goes the long way, via Glenwood Springs. 出典 ↗

  • 季節

    Ski season

    11月26日〜4月18日 · 例年早めの予約を

    Aspen Mountain and Snowmass open around Thanksgiving, Highlands and Buttermilk in December, and all four run to mid-April. Highland Bowl needs a settled base and opens when it opens. 出典 ↗

  • 祝日

    Christmas and New Year peak

    12月18日〜1月4日クリスマス・年末年始混雑早めの予約を

    The dearest fortnight of the Aspen year. Lodging goes months ahead, the town runs at capacity, and the early-season snow is rarely as good as the prices suggest. 出典 ↗

  • 季節

    Snow season

    スキーシーズン

    About 75 cm of snow falls in the month.

    気候の平年値から算出

12月の世界のイベント →

近くで開催中のイベント

アスペンから300 km以内 — 日帰りやちょっとした移動で行けて、今月何かがある場所です。快適スコアには含まれません。

アスペンはどこにある?

地図を読み込み中…

12月のアスペン — よくある質問

12月はアスペンを訪れるのに良い時期ですか?
アスペンの12月:極寒、ときどき雨、空気がきれい — 訪れるのに絶好の時期。SeasonMapの快適スコアでは、アスペンの12か月中3位です(87/100)。
12月のアスペンはどんな天気ですか?
12月のアスペンは、平均最高気温2°C、最低気温-10°C、降水量は約55.4 mmで、雨の日はおよそ9.2日です。
12月のアスペンの大気質はどうですか?
12月のアスペンの米国大気質指数(US AQI)は、平均約46です。
12月のアスペンは雪が降りますか?
12月のアスペンの降雪量は、およそ74.9 cmです。

300 km圏内:VailのSki season(11月13日〜4月18日ごろ)、Rocky Mountain National ParkのRanger-led snowshoe walks(12月15日〜3月15日ごろ)。

アスペン 12月の天気:2°C、雨の日9日、日照7時間 | SeasonMap