Williston (ND) Temperature by Month

The average annual maximum temperature in Williston, North Dakota, United States of America is 12°C (54°F), with daytime highs ranging from -4°C (25°F) in December to 30°C (86°F) in July. This page covers monthly averages, day-night differences, and how Williston compares to cities worldwide.

The climate in Williston is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 14°C (57°F) in July to -15°C (5°F) in December.

The chart below illustrates the average maximum day and minimum night temperatures in Williston by month:

Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating.

The chart below shows the average temperature throughout the year:

Williston's average annual maximum temperature is 12°C (54°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Williston's weather, including monthly rainfall, sunshine hours, and humidity, visit our Williston climate page.