The best times to visit Williston for ideal weather are

May 28th to October 14th

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

 

 


Other Williston Travel Info

Weather in Williston

Temperature

Average temperatures in Williston vary an incredible amount. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is less temperate than some — in the 37th 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 Williston, 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 89.7°F (32.1°C) with temperatures rarely dropping below 57°F (13.9°C) at night.

Williston Temperatures (Fahrenheit)

Key
High
Average
Low

Williston 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.

Williston Perceived Temperature (F)

Key
High
Average
Low

Williston Perceived Temperature (C)

Key
High
Average
Low

 

Average Williston 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 26.6 13.9 2.5
Feb 26.6 13.6 1.9
Mar 43.9 28.9 16.4
Apr 58.2 42.1 27.5
May 68.9 53.7 38.8
Jun 78.3 63.5 48.6
Jul 87.8 71.3 55.4
Aug 86.5 69 53.1
Sep 77.8 59.2 43.2
Oct 60 44.3 31.6
Nov 43 28.4 16.5
Dec 26.2 14.1 3.1

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -3 -10.1 -16.4
Feb -3 -10.2 -16.7
Mar 6.6 -1.7 -8.7
Apr 14.6 5.6 -2.5
May 20.5 12.1 3.8
Jun 25.7 17.5 9.2
Jul 31 21.8 13
Aug 30.3 20.6 11.7
Sep 25.4 15.1 6.2
Oct 15.6 6.8 -0.2
Nov 6.1 -2 -8.6
Dec -3.2 -9.9 -16.1

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Williston are February, November, and then January. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid November. For example, on the week of November 12th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late May with an average of 2 days of significant precipitation the week of May 21st.

When can you find snow in Williston? Weather stations report very large amounts of snow likely to be deepest around December, especially close to mid December. The best time to ski (if at all) in Williston 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 Williston.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Williston (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 5% 8.4 0.6
Feb 4% 8.4 0.6
Mar 5% 9.2 0.6
Apr 9% 3.6 0.9
May 20% 4.1 3.1
Jun 20% 0 2.6
Jul 18% 0 2.3
Aug 16% 0 1.5
Sep 9% 0 1.2
Oct 10% 3.2 1.3
Nov 4% 4.6 0.7
Dec 8% 9.7 0.8

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 5 21.3 1.5
Feb 4 21.3 1.5
Mar 5 23.4 1.5
Apr 9 9.1 2.3
May 20 10.4 7.9
Jun 20 0 6.6
Jul 18 0 5.8
Aug 16 0 3.8
Sep 9 0 3
Oct 10 8.1 3.3
Nov 4 11.7 1.8
Dec 8 24.6 2

 

Humidity and Wind

Williston has some very humid months, with other moderately humid months on the other side of the year. The least humid month is April (46.9% relative humidity), and the most humid month is December (70%).

Wind in Williston is usually moderate. The windiest month is May, followed by April and January. May’s average wind speed of around 8.7 knots (10 MPH or 16.1 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 May where average top sustained speeds reach 18.5 knots, which is considered a fresh breeze.

Relative Humidity (%)

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

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 7.6 Gentle breeze 15.9 Significant breeze
Feb 6.7 Light breeze 13.6 Significant breeze
Mar 7.5 Gentle breeze 15.9 Significant breeze
Apr 8.6 Gentle breeze 17.4 Strong breeze
May 8.7 Gentle breeze 17.5 Significant breeze
Jun 7.5 Gentle breeze 16.4 Significant breeze
Jul 7 Gentle breeze 16.3 Significant breeze
Aug 6.5 Light breeze 15.1 Significant breeze
Sep 6.6 Light breeze 15.1 Significant breeze
Oct 7.4 Gentle breeze 15.2 Significant breeze
Nov 7.2 Gentle breeze 14.7 Significant breeze
Dec 6.4 Light breeze 13.6 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 66.1%
Feb 67.4%
Mar 60.8%
Apr 46.9%
May 48.8%
Jun 54.4%
Jul 48.2%
Aug 47.7%
Sep 47.6%
Oct 56.4%
Nov 62.4%
Dec 70%

 

Is it Safe to Travel to Williston?

Our best data indicates this area is generally safe. As of Oct 07, 2019 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 Sep 23, 2019.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Williston, ND, US is August, followed by July and April. 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 Williston in December. 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 somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 50.1 in December means 50.1% of the tourists vs. August.

 

 

Overall Williston Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 72.9°F (22.7°C) and 28°F (-2.2°C) with far warmer temperatures in the later months. Rain is rare with 2 to 6 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 quite warm. These months see the most precipitation with 5 to 6 days of precipitation per month. June – August is the busiest season for tourism in Williston, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 80.3°F (26.8°C) and 34°F (1.1°C), which will feel chilly given the humidity and wind. It rains or snows a normal amount: 1 to 3 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 Williston to be enjoyable for warm weather travelers. The average high during this season is between 30.1°F (-1.1°C) and 22.5°F (-5.3°C). On average, it rains or snows a smalll amount: 1 to 2 times per month. These times of year are the slowest with tourists.

 

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