Oswego in Fall
In fall (September, October and November), Oswego sees average daytime highs around 58°F and overnight lows near 49°F, with 14.5 in of precipitation over about 43 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs ease from about 73°F in early September to 43°F by late November. The sky is clear or mostly clear about 24% of the time across fall, and the air most often feels dry.
Fall is Oswego's 2nd-best season to visit on our travel score. For the whole year in context, see Oswego's year-round climate.
- Avg daytime high
- 58°F
- 2nd-warmest season
- Avg overnight low
- 49°F
- Precipitation
- 14.5 in
- 43 wet days
- Avg wind
- 10 mph
- Travel score
- 3.8
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Oswego in Fall
Over the season highs ease from about 73°F in early September to 43°F by late November.
A typical fall day in Oswego reaches about 58°F and drops to 49°F overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Oswego
Once humidity and wind are folded in, fall brings about 0 days that feel above 90°F and 18 that feel at or below 32°F.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Oswego 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 | 32° / 22° | 4.1 | 17.7 | 15.6 | 9.1 | 0.0 |
| Feb | 32° / 21° | 3.1 | 12.4 | 10 | 10.2 | 0.0 |
| Mar | 38° / 27° | 3.5 | 12.4 | 6.5 | 11.6 | 0.0 |
| Apr | 48° / 38° | 4.4 | 12.8 | 2.1 | 13.2 | 1.6 |
| May | 58° / 47° | 3.6 | 11.4 | 0 | 14.5 | 4.2 |
| Jun | 68° / 58° | 4.2 | 12 | 0 | 15.2 | 6.1 |
| Jul | 75° / 66° | 4.4 | 12.1 | 0 | 14.9 | 6.8 |
| Aug | 75° / 66° | 4.3 | 12.7 | 0 | 13.8 | 6.8 |
| Sep | 69° / 59° | 4.4 | 11.5 | 0 | 12.3 | 6.2 |
| Oct | 58° / 49° | 5.4 | 15.4 | 0 | 10.8 | 3.8 |
| Nov | 47° / 38° | 4.6 | 16.2 | 3.9 | 9.5 | 1.3 |
| Dec | 38° / 30° | 4.8 | 18.9 | 11.8 | 8.8 | 0.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 24% of the time across fall.
Chance of precipitation in Fall
Oswego gets around 14.5 in of rain and snow over 43 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 10 mph across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 hours in early September to 9 hours 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 2.9 kWh/m².
Is fall a good time to visit Oswego?
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 Oswego.
What to pack for Oswego in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Oswego sees daytime highs around 58°F and nights near 49°F. Pack a warm layer and rain gear. About 43 days see rain.
Sea temperature near Oswego in Fall
The nearest coast averages about 59°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 8 mi away) is warmest in August at about 72°F and coldest in March near 37°F.
It's comfortable for a long swim from Jul 15 to Sep 13 — about 2 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 40 | 37 | 37 | 38 | 43 | 57 | 69 | 72 | 68 | 58 | 50 | 44 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Refreshing | Refreshing | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 40 | Bracing |
| Feb | 37 | Bracing |
| Mar | 37 | Bracing |
| Apr | 38 | Bracing |
| May | 43 | Bracing |
| Jun | 57 | Bracing |
| Jul | 69 | Refreshing |
| Aug | 72 | Refreshing |
| Sep | 68 | Cool |
| Oct | 58 | Bracing |
| Nov | 50 | Bracing |
| Dec | 44 | Bracing |
UV index in Oswego 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 Oswego peaks around July 12 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 | 7 | 8 | 8 | 6 | 6 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | Very 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 | High |
| May | 7 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Oswego?
Oswego sits at 43.5°N, 76.5°W, 285 ft above sea level, in United States. The nearest listed city is Clay, 25 mi away.
Topography around Oswego
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Oswego.
Within 2 miles, the terrain around Oswego has only modest variations in elevation — a maximum elevation change of 240 ft around an average of 305 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 354 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,801 ft.
The land around Oswego is covered by trees (39%) and water (30%) within 2 miles, water (47%) and trees (42%) within 10 miles, and trees (41%) and water (39%) 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 Oswego (43.4554°, -76.5105°, elevation 285 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.