リッチモンド 9月の天気
リッチモンドの9月:暑い、雨が多い、空気がきれい — 訪れるのにとても良い時期。
2026年9月更新 · ERA5再解析による気候平年値
リッチモンドでは12か月中4位 · 9月に訪れたい旅行先で1413か所中744位 · 快適スコア79/100(Bランク)
- 日中
- 28°C
- 夜
- 17°C
- 雨の日
- 8
- 日照
- 8.5 h
- 湿度
- 74%
- 日の長さ
- 12 h

9月のリッチモンドについての旅行者の声
近くのシェナンドー国立公園からのメモ(137 km)
リッチモンドには9月のメモがまだありません — これは季節を共にする近くのシェナンドー国立公園についてのメモです。
Shenandoah-forum threads on the quieter months before the fall rush call September a genuinely strong pick, one longtime poster describing the weather here as consistently gorgeous late in the month with none of the crowding October's peak color display brings. Regulars are direct September sits too early for real fall color, that display generally not building until the second week through mid-October at the earliest, so anyone specifically chasing foliage should hold off. Posters call the tradeoff worthwhile for many visitors, genuinely lighter traffic along Skyline Drive and easier parking at popular overlooks and trailheads compared to the October rush. Warm, humid afternoons are called the norm early in the month, conditions generally moderating as September progresses toward its final weeks. Layers for cooler evenings are standing advice regardless of the exact date chosen. The record: 22.2C days feeling like 24C, 13C nights, 74 percent humidity and 11.9 hours of daylight.
リッチモンドのほかの月
Forum posters describe late November in Richmond as usually cool and crisp, not too cold as long as it isn't raining, with temperatures sometimes still reaching the 60s or 70sF earlier in the month. Posters are direct that fall weather here is genuinely finicky, and conditions can turn colder and more unpredictable as November wears on. Posters consistently note that real winter cold doesn't typically arrive until late December or early January, with Richmond winters generally mild by regional standards - an occasional light dusting of snow, annual totals usually under a foot, and daytime temperatures well above freezing even if nights get properly chilly. Posters generally rate November as a good time to visit, with pleasant conditions for exploring the city's historical sites outdoors.
Richmond forum regulars call early October “lovely with mild temps,” warm days and cool nights that regulars name alongside April and September as the city's best-weather months. The honest caveat: fall and spring in Virginia are very finicky seasons, with real variation possible from one day to the next even within a single week's visit — layers are the standard recommendation for exactly that reason, since a warm afternoon can follow a genuinely cool morning. The payoff for timing it right: many of the city's most popular outdoor events cluster into this stretch. Our record: 22°C days, 12.7°C nights, 7 rain days and 7.5 hours of sun — mild and comfortably dry, matching the “best of the year, but check the week's forecast” read.
Richmond-area forum regulars call April one of the better months to avoid summer's heat and humidity, but warn spring here is genuinely unsettled — “wet, snow, sleet, rain or unseasonably warm conditions” can all show up in the same week. Average highs sit in the mid-60s°F and lows in the mid-40s, but it's still early spring: posters note it's “barely out of winter,” so be prepared for anything from near-freezing to low-80s depending on the week. Historic Garden Week typically falls in April, with private homes and gardens across the state opened for tours — a reason to time a visit for the month beyond the weather itself. Our record: 21°C days, 9.5°C nights and 9.8 rain days — mild on average, with the real variability the forum describes sitting underneath that number.
April and early May are the forum's picks for Richmond — mild days, cool nights, and well clear of a summer regulars describe as steamy, over 32°C with high humidity. May averages near 25°C by day and 14 overnight. The honest caveat they add is that a Virginia spring is "a bit dodgy": it may be hot or cold, it may rain or not, and the month is genuinely unpredictable rather than reliably pleasant. October is the other month they name, and the one they rate as the more dependable of the two.
地図のリッチモンドのカードから自分のメモを追加できます。
リッチモンドの気候平年値 — 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月のリッチモンドの混雑
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
リッチモンドの天気が良い月
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)。
天気はまずまずリッチモンドの天気が最も良いのは4月、5月、10月です — ひと続きのシーズンではなく、別々の時期です。
天気が最高天気はまずまず天気が厳しい
9月のリッチモンドのイベント
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。
- 要注意
Tropical storm remnants
8月15日〜10月15日 · 例年ハリケーンシーズンStorms that come up the Chesapeake or across from the Carolinas arrive here as flooding rain and downed trees, and the James can rise fast enough to shut the floodwall gates. Isabel is still the local benchmark. 出典 ↗
近くで開催中のイベント
リッチモンドから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。
リッチモンドはどこにある?
9月のリッチモンド — よくある質問
- 9月はリッチモンドを訪れるのに良い時期ですか?
- リッチモンドの9月:暑い、雨が多い、空気がきれい — 訪れるのにとても良い時期。SeasonMapの快適スコアでは、リッチモンドの12か月中4位です(79/100)。
- 9月のリッチモンドはどんな天気ですか?
- 9月のリッチモンドは、平均最高気温28.2°C、最低気温17.1°C、降水量は約122.1 mmで、雨の日はおよそ7.5日です。
- 9月のリッチモンドの大気質はどうですか?
- 9月のリッチモンドの米国大気質指数(US AQI)は、平均約43です。
300 km圏内:Virginia BeachのNeptune Festival(9月25日〜27日)、Outer BanksのLighthouse climbing season(4月17日〜10月12日ごろ)。