Watertown in Fall
In fall (September, October and November), Watertown sees average daytime highs around 55°F and overnight lows near 37°F, with 6.0 in of precipitation over about 20 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 76°F in early September to 33°F by late November. The sky is clear or mostly clear about 38% of the time across fall, and the air most often feels dry.
Fall is Watertown's 2nd-best season to visit on our travel score. For the whole year in context, see Watertown's year-round climate.
- Avg daytime high
- 55°F
- 2nd-warmest season
- Avg overnight low
- 37°F
- Precipitation
- 6.0 in
- 20 wet days
- Avg wind
- 11 mph
- Travel score
- 3.8
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Watertown in Fall
Over the season highs ease from about 76°F in early September to 33°F by late November.
A typical fall day in Watertown reaches about 55°F and drops to 37°F overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Watertown
Once humidity and wind are folded in, fall brings about 0 days that feel above 90°F and 50 that feel at or below 32°F.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Watertown 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 | 21° / 6° | 0.9 | 5.2 | 5.4 | 9 | 0.0 |
| Feb | 25° / 10° | 0.8 | 4.6 | 4.6 | 10.1 | 0.0 |
| Mar | 38° / 21° | 1.6 | 6 | 3.8 | 11.6 | 0.2 |
| Apr | 53° / 33° | 2.8 | 9.5 | 3 | 13.2 | 3.0 |
| May | 66° / 46° | 3.4 | 11.4 | 0.1 | 14.6 | 5.7 |
| Jun | 75° / 57° | 4.4 | 12.2 | 0 | 15.3 | 6.5 |
| Jul | 80° / 62° | 3.1 | 9.4 | 0 | 15.1 | 6.9 |
| Aug | 78° / 59° | 3.2 | 9.3 | 0 | 13.9 | 7.1 |
| Sep | 71° / 50° | 2.5 | 8 | 0 | 12.3 | 7.0 |
| Oct | 56° / 37° | 2.2 | 6.9 | 1.2 | 10.7 | 4.1 |
| Nov | 40° / 24° | 1.3 | 5 | 3.6 | 9.4 | 0.4 |
| Dec | 26° / 13° | 0.9 | 5 | 5.4 | 8.7 | 0.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 38% of the time across fall.
Chance of precipitation in Fall
Watertown gets around 6.0 in of rain and snow over 20 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 h 06 min in early September to 8 h 54 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 3.1 kWh/m².
Hazard calendar for Watertown
In fall, Watertown overlaps its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.
Watertown sits in the Atlantic hurricane belt; the season peaks August–October.
Watertown's rainy season runs April–October, when most of the year's rain falls.
Is fall a good time to visit Watertown?
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 weaker month for outdoor sightseeing in Watertown.
What to pack for Watertown in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Watertown sees daytime highs around 55°F and nights near 37°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 20 days see rain.
UV index in Watertown 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 Watertown peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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) | 1 | 2 | 4 | 5 | 6 | 9 | 8 | 6 | 6 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | Moderate | High | Very high | Very high | High | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 6 | High |
| Jun | 9 | Very high |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Watertown?
Watertown sits at 44.9°N, 97.1°W, 1,732 ft above sea level, in United States. The nearest listed city is Brookings, 43 mi away.
Topography around Watertown
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Watertown.
Within 2 miles, the terrain around Watertown has only modest variations in elevation — a maximum elevation change of 115 ft around an average of 1,736 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 344 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,237 ft.
The land around Watertown is covered by grassland (38%) and artificial surfaces (29%) within 2 miles, cropland (58%) and grassland (28%) within 10 miles, and cropland (62%) and grassland (29%) 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 Watertown (44.8994°, -97.1151°, elevation 1,732 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.