セオドア・ルーズベルト国立公園 9月の天気
セオドア・ルーズベルト国立公園の9月:快適、ときどき雨、空気がきれい — 一年で最も訪れやすい月のひとつ。
2026年9月更新 · ERA5再解析による気候平年値
セオドア・ルーズベルト国立公園では12か月中2位 · 9月に訪れたい旅行先で1413か所中406位 · 快適スコア87/100(Aランク)
- 日中
- 24°C
- 夜
- 8°C
- 雨の日
- 5
- 日照
- 9.7 h
- 湿度
- 56%
- 日の長さ
- 13 h

9月のセオドア・ルーズベルト国立公園についての旅行者の声
Theodore Roosevelt-forum threads on September are consistent this is one of the best windows of the year, clear days and cool nights across the North Dakota badlands, with the very first week often named the sweet spot before conditions turn noticeably cooler later on. Posters describe bison, elk, longhorns, pronghorn and wild horses pushing down from higher ground toward the meadow areas as the month goes on, bunching up in ways that make sightings genuinely easier than in high summer. Regulars call early morning or evening the standard window for the best wildlife activity, animals far less visible through the middle of a warm afternoon. The quieter North Unit is repeatedly recommended alongside the more visited South Unit for anyone wanting fewer people around. Regulars call September a strong pick for a family hike paired with reliable wildlife viewing. The record: 24.2C days feeling like 21C, 7.6C nights, a low 56 percent humidity and 12.5 hours of daylight.
セオドア・ルーズベルト国立公園のほかの月
Theodore Roosevelt-forum threads on a January visit describe average conditions as genuinely cold, posters naming a typical high around twenty-eight degrees Fahrenheit and a low near five. Regulars call the park under snow genuinely even more beautiful, one visitor returning specifically for this look and spotting bison, elk and deer during the trip. Posters call wildlife genuinely still active through January, several regulars naming easier spotting against snowy terrain as a real upside of a winter visit. Regulars call a four-wheel-drive vehicle genuinely recommended, several threads naming snow-covered roads with occasional icy spots as standard this time of year. Posters recommend real winter preparation regardless of how mild the forecast looks, several regulars calling this standard given how quickly conditions can turn here. The record: -2.5C days, -15.1C nights, 9.8mm across over 3 days and 72 percent humidity.
Theodore Roosevelt-forum threads and park notices on a December visit describe both Units as staying open through the holidays, posters noting reduced visitor center hours and a closed Painted Canyon overlook as the main seasonal changes. Regulars call December through February the coldest stretch, average lows in the single digits Fahrenheit cited repeatedly across winter threads. Posters recommend a four-wheel-drive vehicle for a December trip, several regulars describing roads as covered with stronger winds capable of temporarily closing sections. Regulars call much of Medora shut this time of year, though the parts that stay open are described as genuinely welcoming to the handful of winter visitors. Posters recommend a real survival kit regardless of a clear forecast, several threads calling conditions here capable of turning brutal with little notice. The record: 0C days feeling like -5C, -13C nights, 19.2mm across 4 days and 69 percent humidity.
Theodore Roosevelt National Park-forum threads on an October visit recommend earlier in the month over later, posters calling an early snowstorm a real possibility once the month runs on. Regulars call the park genuinely quiet throughout October, a real contrast with the busier summer months. Posters recommend the Painted Canyon Nature Trail, Skyline Vista, Wind Canyon, Boicourt Trail and Buck Hill in the South Unit, with Caprock Coulee and Sperati Point the standouts in the North Unit. Regulars call daylight noticeably shorter by October, sunrise around seven and sunset near six-twenty leaving roughly twelve usable hours. Posters recommend real cold-weather layers regardless of a mild-looking forecast, conditions here capable of turning fast this late in the season. The record: 14.1C days feeling like 13C, -0.8C nights, 32.1mm across over 4 days and 61 percent humidity.
Theodore Roosevelt-forum threads on a February visit are direct this sits deep within a genuinely harsh North Dakota winter, real cold-weather gear non-negotiable regardless of how clear the sky looks. Posters describe daytime readings as staying well below freezing most of the month, exposed badlands terrain offering little shelter from the wind. Regulars call accumulation and drifting a standing feature of the season, some roads and overlooks less reliably accessible than in warmer months. Posters recommend checking current conditions before a winter trip, weather here capable of shifting fast with little warning. Regulars describe the badlands landscape as genuinely striking under a fresh layer, a real reward for visitors prepared for the cold. Posters call the near-total absence of crowds a genuine upside for anyone willing to brave the conditions. The record: -3.6C days feeling like -9C, -16.3C nights, a notably high 16cm of fresh accumulation and 66 percent humidity.
地図のセオドア・ルーズベルト国立公園のカードから自分のメモを追加できます。
セオドア・ルーズベルト国立公園の気候平年値 — 9月
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。
9月のセオドア・ルーズベルト国立公園の混雑
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。
混雑アメリカ合衆国のSummer break(推定)
ピークの混雑混雑ショルダーシーズン閑散
セオドア・ルーズベルト国立公園の天気が良い月
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)。
天気が最高セオドア・ルーズベルト国立公園の天気が最も良いのは5月、6月、9月です — ひと続きのシーズンではなく、別々の時期です。
9月にはBison rutがあります。
天気が最高天気はまずまず天気が厳しい
9月のセオドア・ルーズベルト国立公園のイベント
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。
- 自然
Bison rut
7月15日〜9月5日 · 例年発情期リスクBulls bellow, wallow and fight through high summer, and they are unpredictable and fast at exactly the time visitors are closest to them. Trails get closed when a herd sits on one.
- 自然
Cottonwood colour
9月20日〜10月20日 · 例年紅葉The cottonwoods along the Little Missouri turn yellow against grey and red clay for about a month, and the park is close to empty for it. The best light on the badlands is in the same weeks.
セオドア・ルーズベルト国立公園はどこにある?
9月のセオドア・ルーズベルト国立公園 — よくある質問
- 9月はセオドア・ルーズベルト国立公園を訪れるのに良い時期ですか?
- セオドア・ルーズベルト国立公園の9月:快適、ときどき雨、空気がきれい — 一年で最も訪れやすい月のひとつ。SeasonMapの快適スコアでは、セオドア・ルーズベルト国立公園の12か月中2位です(87/100)。
- 9月のセオドア・ルーズベルト国立公園はどんな天気ですか?
- 9月のセオドア・ルーズベルト国立公園は、平均最高気温24.2°C、最低気温7.6°C、降水量は約53.6 mmで、雨の日はおよそ5.2日です。
- 9月のセオドア・ルーズベルト国立公園の大気質はどうですか?
- 9月のセオドア・ルーズベルト国立公園の米国大気質指数(US AQI)は、平均約41です。