The best times to visit DuPont for ideal weather are

May 28th to September 30th

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

 

 


Other DuPont Travel Info

Weather in DuPont

Temperature

Average temperatures in DuPont vary greatly. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 31st 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 DuPont, the hottest months are July, August, and then September. See average monthly temperatures below. The warmest time of year is generally mid August where highs are regularly around 81.7°F (27.6°C) with temperatures rarely dropping below 54.2°F (12.3°C) at night.

DuPont Temperatures (Fahrenheit)

Key
High
Average
Low

DuPont Temperatures (Celsius)

Key
High
Average
Low

“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.

DuPont Perceived Temperature (F)

Key
High
Average
Low

DuPont Perceived Temperature (C)

Key
High
Average
Low

 

Average DuPont 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 46.8 39.1 33.4
Feb 50.1 41.2 34.2
Mar 54.3 44.2 36.3
Apr 58.8 47.6 38.4
May 66.8 54.4 44.2
Jun 71.9 59.8 49.4
Jul 79.4 65.1 53
Aug 79 65.1 53.3
Sep 73.5 59.9 48.9
Oct 61.7 51.2 42.9
Nov 51.9 43.3 36.2
Dec 45.7 38.5 32.4

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 8.2 3.9 0.8
Feb 10.1 5.1 1.2
Mar 12.4 6.8 2.4
Apr 14.9 8.7 3.6
May 19.3 12.4 6.8
Jun 22.2 15.4 9.7
Jul 26.3 18.4 11.7
Aug 26.1 18.4 11.8
Sep 23.1 15.5 9.4
Oct 16.5 10.7 6.1
Nov 11.1 6.3 2.3
Dec 7.6 3.6 0.2

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in DuPont are July, June, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late July. For example, on the week of July 23rd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid January with an average of 4 days of significant precipitation the week of January 8th.

When can you find snow in DuPont? Weather stations report moderate or seasonal snow likely to be deepest around December, especially close to mid December. The best time to ski (if at all) in DuPont is often around around December 17th when fresh powder is deepest. 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 DuPont.

Key
Days with precipitation

Snow on the Ground

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

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 36% 1.2 5.2
Feb 33% 0 2.6
Mar 31% 0 4.2
Apr 26% 0 2.2
May 27% 0 2.3
Jun 15% 0 1.3
Jul 7% 0 0.6
Aug 17% 0 1.5
Sep 15% 0 1.8
Oct 29% 0 3.9
Nov 37% 1.2 4.9
Dec 37% 4.4 4.9

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 36 3 13.2
Feb 33 0 6.6
Mar 31 0 10.7
Apr 26 0 5.6
May 27 0 5.8
Jun 15 0 3.3
Jul 7 0 1.5
Aug 17 0 3.8
Sep 15 0 4.6
Oct 29 0 9.9
Nov 37 3 12.4
Dec 37 11.2 12.4

 

Humidity and Wind

DuPont has some extremely humid months, with other comfortably humid months. The least humid month is July (55.8% relative humidity), and the most humid month is January (86.5%).

Wind in DuPont is usually calm. The windiest month is April, followed by March and June. April’s average wind speed of around 5.5 knots (6.3 MPH or 10.2 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid November where average top sustained speeds reach 13.9 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

Key
Avg. Relative Humidity

Wind

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

Key
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 4.6 Light breeze 10.6 Gentle breeze
Feb 4.6 Light breeze 10.8 Gentle breeze
Mar 5.4 Light breeze 12.4 Gentle breeze
Apr 5.5 Light breeze 12.6 Significant breeze
May 5.2 Light breeze 11.5 Gentle breeze
Jun 5.3 Light breeze 11.2 Significant breeze
Jul 5 Light breeze 10.3 Gentle breeze
Aug 4.8 Light breeze 10.4 Gentle breeze
Sep 4.5 Light breeze 10.1 Gentle breeze
Oct 4.3 Light breeze 10.4 Gentle breeze
Nov 5.2 Light breeze 12 Gentle breeze
Dec 4.8 Light breeze 11.3 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 86.5%
Feb 80.1%
Mar 75%
Apr 66.6%
May 61.9%
Jun 59.3%
Jul 55.8%
Aug 58.1%
Sep 65.9%
Oct 79.1%
Nov 83.3%
Dec 85.5%

 

Is it Safe to Travel to DuPont?

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 DuPont, WA, US is August, followed by July and June. 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 DuPont in October. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
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 slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 52 in October means 52% of the tourists vs. August.

 

 

Overall DuPont Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 70.7°F (21.5°C) and 50.9°F (10.5°C) with warmer temperatures in the later months. Rain is somewhat common with 8 to 10 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 comfortably cool weather with high temperatures that are comfortable. These months see the least precipitation with 2 to 5 days of precipitation per month. June – August is the busiest season for tourism in DuPont, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 76.6°F (24.8°C) and 47.9°F (8.8°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 5 to 11 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in DuPont to be enjoyable for warm weather travelers. The average high during this season is between 51.7°F (10.9°C) and 44.5°F (6.9°C). On average, it rains or snows a great amount: 9 to 11 times per month. These times of year are fairly slow with tourists.

 

Best Times to Travel› the United States › DuPont, WA, US