SeasonMapKillington weather in September
United States
September in Killington: cool, rainy, with clean air — not the best time to visit.
#9 of 12 months in Killington · #1343 of 1383 destinations to visit in September · comfort 21/100 (tier F)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Killington in September
No notes yet. Open Killington on the map to add the first one.
Killington climate normals — September
| Daytime high | 16°C / 60°F | 🙂 cool |
|---|---|---|
| Nighttime low | 6°C / 43°F | |
| Feels like (high) | 14°C / 57°F | |
| Rainfall | 95 mm / 3.7 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 6°C / 43°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 12.5 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 35 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Killington in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsFall foliage, Summer break in United States(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Killington's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherKillington's best weather comes in February, March and December — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Killington in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Bike park season
20 May – 20 Oct · usuallyTrail seasonThe lifts turn again from late May for downhill riding, opening zone by zone as the ground dries: Snowshed first, Ramshead in June, the gondola terrain in July. Source ↗
- Nature
Fall foliage
22 Sep – 15 Oct · usuallyAutumn colourCrowdedThe summit turns in the last days of September and the valleys a week or so behind. Route 100 and the Sherburne Pass crawl at weekends, and the gondola runs for people who have no intention of skiing.
Nearby, and something's on
Within 300 km of Killington — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Killington?
Killington in September — FAQ
- Is September a good time to visit Killington?
- September in Killington: cool, rainy, with clean air — not the best time to visit. It ranks #9 of 12 months for Killington on SeasonMap's comfort score (21/100).
- What is the weather like in Killington in September?
- In September, Killington averages a daily high of 15.7°C and a low of 6.3°C, with about 95.2 mm of rain over roughly 9.3 rainy days.
- What is the air quality in Killington in September?
- Killington has a mean US Air Quality Index of about 35 in September.
Other months in Killington
Compare Killington in September
Warmer or cooler than Killington in September
Similar destinations in North America — September
Within 300 km: Stowe's Mount Mansfield summer season around 25 May – 15 Oct, and Lake Placid's Adirondack foliage around 20 Sep – 15 Oct.