Hauppauge in Fall
In fall (September, October and November), Hauppauge sees average daytime highs around 62°F and overnight lows near 54°F, with 11.9 in of precipitation over about 27 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 74°F in early September to 49°F by late November. The sky is clear or mostly clear about 40% of the time across fall, and the air most often feels dry.
Fall is Hauppauge's 2nd-best season to visit on our travel score. For the whole year in context, see Hauppauge's year-round climate.
- Avg daytime high
- 62°F
- 2nd-warmest season
- Avg overnight low
- 54°F
- Precipitation
- 11.9 in
- 27 wet days
- Avg wind
- 11 mph
- Travel score
- 5.1
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Hauppauge in Fall
Over the season highs ease from about 74°F in early September to 49°F by late November.
A typical fall day in Hauppauge reaches about 62°F and drops to 54°F overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Hauppauge
Once humidity and wind are folded in, fall brings about 0 days that feel above 90°F and 0 that feel at or below 32°F.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Hauppauge weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 39° / 30° | 3.8 | 9.9 | 4 | 9.4 | 0.0 |
| Feb | 39° / 30° | 3.5 | 9.3 | 3.7 | 10.4 | 0.0 |
| Mar | 44° / 35° | 4.6 | 10.6 | 2.9 | 11.7 | 0.8 |
| Apr | 53° / 44° | 3.8 | 10.9 | 0.4 | 13.1 | 2.8 |
| May | 61° / 54° | 3.5 | 10.8 | 0 | 14.2 | 5.0 |
| Jun | 71° / 64° | 3.6 | 9.9 | 0 | 14.9 | 6.6 |
| Jul | 77° / 71° | 3.3 | 9.4 | 0 | 14.6 | 7.0 |
| Aug | 77° / 70° | 3.9 | 9.5 | 0 | 13.6 | 7.1 |
| Sep | 71° / 64° | 3.8 | 9.1 | 0 | 12.3 | 6.9 |
| Oct | 62° / 55° | 4.4 | 9.2 | 0 | 10.9 | 5.5 |
| Nov | 53° / 44° | 3.7 | 8.9 | 0.3 | 9.7 | 3.0 |
| Dec | 44° / 36° | 4.8 | 10.6 | 2.3 | 9.1 | 0.9 |
Cloud cover in Fall
The sky is clear or mostly clear about 40% of the time across fall.
Chance of precipitation in Fall
Hauppauge gets around 11.9 in of rain and snow over 27 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 11 mph across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 hours in early September to 9 h 18 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 3.3 kWh/m².
Hazard calendar for Hauppauge
In fall, Hauppauge overlaps its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
Hauppauge sits in the Atlantic hurricane belt; the season peaks August–October.
Is fall a good time to visit Hauppauge?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Hauppauge for sightseeing.
What to pack for Hauppauge in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Hauppauge sees daytime highs around 62°F and nights near 54°F. Pack a warm layer. Worth having: rain gear. About 27 days see rain.
Sea temperature near Hauppauge in Fall
The nearest coast averages about 63°F across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 14 mi away) is warmest in August at about 73°F and coldest in February near 40°F.
It's comfortable for a long swim from Jul 3 to Sep 23 — about 2.7 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 43 | 40 | 40 | 45 | 54 | 64 | 72 | 73 | 70 | 63 | 55 | 49 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 43 | Bracing |
| Feb | 40 | Bracing |
| Mar | 40 | Bracing |
| Apr | 45 | Bracing |
| May | 54 | Bracing |
| Jun | 64 | Cool |
| Jul | 72 | Refreshing |
| Aug | 73 | Refreshing |
| Sep | 70 | Refreshing |
| Oct | 63 | Cool |
| Nov | 55 | Bracing |
| Dec | 49 | Bracing |
UV index in Hauppauge in Fall
Clear-sky midday UV across fall averages around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Hauppauge peaks around July 11 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 6 | 7 | 8 | 8 | 6 | 6 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | High | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 7 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Air quality in Hauppauge in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Hauppauge is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 9 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 13 | 15 | 16 | 18 | 18 | 19 | 16 | 13 | 10 | 9 | 10 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 13 | Moderate |
| Mar | 15 | Moderate |
| Apr | 16 | Moderate |
| May | 18 | Moderate |
| Jun | 18 | Moderate |
| Jul | 19 | Moderate |
| Aug | 16 | Moderate |
| Sep | 13 | Moderate |
| Oct | 10 | Good |
| Nov | 9 | Good |
| Dec | 10 | Good |
Where is Hauppauge?
Hauppauge sits at 40.8°N, 73.2°W, 62 ft above sea level, in United States. The nearest listed city is Smithtown, 1.9 mi away.
Topography around Hauppauge
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Hauppauge.
Within 2 miles, the terrain around Hauppauge has only modest variations in elevation — a maximum elevation change of 246 ft around an average of 92 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 361 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,401 ft.
The land around Hauppauge is covered by trees (66%) and artificial surfaces (20%) within 2 miles, trees (57%) within 10 miles, and water (51%) and trees (36%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Hauppauge (40.8257°, -73.2026°, elevation 62 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.