Williston
North Dakota, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Williston, ND

January, the same as December, in Williston, North Dakota, is another subzero cold winter month, with average temperature varying between 0.1°F (-17.7°C) and 21.9°F (-5.6°C). With an average high-temperature of 21.9°F (-5.6°C) and an average low-temperature of 0.1°F (-17.7°C), January is the coldest month. Weather in January »
The last month of the winter, February, is another freezing cold month in Williston, North Dakota, with average temperature varying between 27.5°F (-2.5°C) and 6.3°F (-14.3°C). In Williston, the average high-temperature slightly increases, from 21.9°F (-5.6°C) in January, to a still subzero cold 27.5°F (-2.5°C). Weather in February »

March, the first month of the spring, in Williston, is a wintry month, with average temperature fluctuating between 18.1°F (-7.7°C) and 40.5°F (4.7°C). In Williston, the average high-temperature rises, from a freezing cold 27.5°F (-2.5°C) in February, to a cold 40.5°F (4.7°C). Weather in March »

April in Williston, North Dakota, is a mild spring month, with average temperature fluctuating between 29.7°F (-1.3°C) and 57°F (13.9°C). In Williston, the average high-temperature in April significantly increases, from a cold 40.5°F (4.7°C) in March, to a mild 57°F (13.9°C). Weather in April »

May, the last month of the spring, in Williston, is a comfortable month, with average temperature ranging between min 40.5°F (4.7°C) and max 67.6°F (19.8°C). In May, the average high-temperature rises, from a mild 57°F (13.9°C) in April, to an enjoyable 67.6°F (19.8°C). Weather in May »

The first month of the summer, June, is a warm month in Williston, North Dakota, with average temperature fluctuating between 49.6°F (9.8°C) and 76.8°F (24.9°C). In June, the average high-temperature rises, from an enjoyable 67.6°F (19.8°C) in May, to a moderately hot 76.8°F (24.9°C). Weather in June »

July, the same as June, is a moderately hot summer month in Williston, North Dakota, with average temperature varying between 84.4°F (29.1°C) and 55.8°F (13.2°C). With an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 55.8°F (13.2°C), July is the warmest month. Weather in July »

The last month of the summer, August, is also a moderately hot month in Williston, North Dakota, with average temperature ranging between min 54°F (12.2°C) and max 83.8°F (28.8°C). In Williston, North Dakota, the average high-temperature in August is practically the same as in July - a still moderately hot 83.8°F (28.8°C). Weather in August »

The first month of the autumn, September, is also an agreeable month in Williston, North Dakota, with average temperature fluctuating between 71.2°F (21.8°C) and 42.1°F (5.6°C). In September, the average high-temperature decreases, from a moderately hot 83.8°F (28.8°C) in August, to an agreeable 71.2°F (21.8°C). Weather in September »

October, the same as September, in Williston, North Dakota, is a moderate autumn month, with average temperature varying between 29.8°F (-1.2°C) and 56.3°F (13.5°C). In October, the average high-temperature plummets, from a pleasant 71.2°F (21.8°C) in September, to a moderate 56.3°F (13.5°C). Weather in October »

November, the last month of the autumn, in Williston, is another cold month, with average temperature varying between 16.3°F (-8.7°C) and 37.9°F (3.3°C). In November, the average high-temperature plummets, from a moderate 56.3°F (13.5°C) in October, to a cold 37.9°F (3.3°C). Weather in November »

December, the first month of the winter, in Williston, is still a freezing cold month, with average temperature ranging between min 3.4°F (-15.9°C) and max 24.4°F (-4.2°C). In December, the average high-temperature decreases, from a wintry 37.9°F (3.3°C) in November, to a subzero cold 24.4°F (-4.2°C). Weather in December »

What is the coldest month in Williston?

The coldest month in Williston is January, with an average high-temperature of 21.9°F (-5.6°C) and an average low-temperature of 0.1°F (-17.7°C).

How much does it rain in Williston?

In Williston, North Dakota, during the entire year, the rain falls for 96.5 days and collects up to 14.4" (364.9mm) of precipitation.

When does it snow in Williston?

Months with snowfall are January through May, September through December.

How much does it snow in Williston?

Throughout the year, there are 41.2 snowfall days, and 45.3" (1150.6mm) of snow is accumulated.

What is the snowiest month in Williston?

January is the month with the most snowfall in Williston, North Dakota. Snow falls for 8.7 days and accumulates 10" (254mm) of snow.

What is the month with the lowest UV index in Williston?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the driest month in Williston?

The month with the least rainfall in Williston, North Dakota, is February when the rain falls for 6 days and typically collects 0.4" (9.9mm) of precipitation.

When are the longest days in Williston?

The month with the longest days is June, with an average of 16h of daylight.

What is the warmest month in Williston?

The warmest month in Williston, North Dakota, is July, with an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 55.8°F (13.2°C).

What is the rainiest month in Williston?

The month with the most rainfall in Williston, North Dakota, is July when the rain falls for 9 days and typically aggregates up to 2.5" (64.5mm) of precipitation.

What month has the most sunshine in Williston?

July has the most sunshine of the year in Williston, with an average of 11.8h of sunshine.

What is the month with the highest UV index in Williston?

With an average maximum UV index of 8, July is the month with the highest UV index in Williston, North Dakota.

What is the least humid month in Williston?

With an average relative humidity of 54.9%, August is the least humid month in Williston, North Dakota.

What is the most humid month in Williston?

The most humid month in Williston, North Dakota, is December, with an average relative humidity of 77.1%.

What is the month with the shortest days in Williston?

The month with the shortest days is December, with an average of 8.4h of daylight.

What is the month with the least sunshine in Williston?

December has the least sunshine of the year in Williston, with an average of 4h of sunshine.
Average temperature - Williston, ND
Average humidity - Williston, ND

The month with the highest relative humidity is December (77.1%).
The month with the lowest relative humidity is August (54.9%).

Average rainfall - Williston, ND
Average rainfall days - Williston, ND

The month with the highest number of rainy days is June (11.5 days).
The month with the lowest number of rainy days is February (6 days).

Average snowfall days - Williston, ND

The month with the highest number of snowfall days is December (9.1 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight / Average sunshine - Williston, ND