The best times to visit Oswego for ideal weather are

May 21st to October 7th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Oswego Travel Info

Weather in Oswego


Average temperatures in Oswego vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 25th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Oswego, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 82.4°F (28°C) with temperatures rarely dropping below 61.4°F (16.3°C) at night.

Oswego Temperatures (Fahrenheit)


Oswego Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Oswego Perceived Temperature (F)


Oswego Perceived Temperature (C)



Average Oswego Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 31.3 23.4 15.8
Feb 30.9 23.4 15.7
Mar 41.9 32.9 24.7
Apr 57.5 46.1 36.1
May 70.6 58.3 46.7
Jun 76.6 65.5 55.4
Jul 81.3 70.1 59.6
Aug 79.4 68.4 58.4
Sep 73.3 61.9 52.1
Oct 61 51.2 42.7
Nov 49.3 40.4 32.3
Dec 38 31.1 24.4

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -0.4 -4.8 -9
Feb -0.6 -4.8 -9.1
Mar 5.5 0.5 -4.1
Apr 14.2 7.8 2.3
May 21.4 14.6 8.2
Jun 24.8 18.6 13
Jul 27.4 21.2 15.3
Aug 26.3 20.2 14.7
Sep 22.9 16.6 11.2
Oct 16.1 10.7 5.9
Nov 9.6 4.7 0.2
Dec 3.3 -0.5 -4.2



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Oswego are March, January, and then May. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late May. For example, on the week of May 21st there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in late October with an average of 3 days of significant precipitation the week of October 22nd.

When can you find snow in Oswego? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Oswego.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Oswego (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 24% 0 2.6
Feb 25% 0 2.2
Mar 20% 0 2.4
Apr 28% 0 3.3
May 24% 0 3.3
Jun 27% 0 4.2
Jul 28% 0 3.6
Aug 25% 0 3.7
Sep 26% 0 3.7
Oct 37% 0 4.7
Nov 30% 0 3.1
Dec 30% 0 3.5

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 24 0 6.6
Feb 25 0 5.6
Mar 20 0 6.1
Apr 28 0 8.4
May 24 0 8.4
Jun 27 0 10.7
Jul 28 0 9.1
Aug 25 0 9.4
Sep 26 0 9.4
Oct 37 0 11.9
Nov 30 0 7.9
Dec 30 0 8.9


Humidity and Wind

Oswego has some high humidity months, with other comfortably humid months. The least humid month is April (52.8% relative humidity), and the most humid month is September (69.9%).

Wind in Oswego is usually calm. The windiest month is April, followed by February and March. April’s average wind speed of around 7.4 knots (8.5 MPH or 13.7 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early April where average top sustained speeds reach 16 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Oswego.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 7.1 Gentle breeze 14.4 Significant breeze
Feb 7.4 Gentle breeze 14.7 Significant breeze
Mar 7.3 Gentle breeze 14.2 Significant breeze
Apr 7.4 Gentle breeze 14.8 Significant breeze
May 5.2 Light breeze 11.9 Significant breeze
Jun 4.7 Light breeze 11.5 Significant breeze
Jul 4.1 Light breeze 10.9 Significant breeze
Aug 3.9 Barely noticeable 10.2 Gentle breeze
Sep 4.1 Light breeze 10.2 Significant breeze
Oct 5.2 Light breeze 11.5 Significant breeze
Nov 6.2 Light breeze 12.7 Significant breeze
Dec 6.9 Light breeze 13.5 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 63.9%
Feb 61.8%
Mar 55.5%
Apr 52.8%
May 57%
Jun 65.7%
Jul 65.7%
Aug 68.1%
Sep 69.9%
Oct 67.2%
Nov 62.1%
Dec 67.5%


Is it Safe to Travel to Oswego?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Dec 04, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Oswego, NY, US is August, followed by September and July. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Oswego in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 49.3 in November means 49.3% of the tourists vs. August.



Overall Oswego Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 75.8°F (24.3°C) and 32.9°F (0.5°C) with far warmer temperatures in the later months. Rain is somewhat common with 6 to 8 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see moderate precipitation with 8 to 9 days of precipitation per month. June – August is the busiest season for tourism in Oswego, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 78.3°F (25.7°C) and 43.1°F (6.2°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 8 to 11 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Winter (December through February)

Weather is far too cold this time of year in Oswego to be enjoyable for warm weather travelers. The average high during this season is between 39.4°F (4.1°C) and 27.3°F (-2.6°C). On average, it rains or snows a fair amount: 7 to 9 times per month. These times of year are the slowest with tourists.


Best Times to Travelthe United States › Oswego, NY, US