Monthly weather forecast and climate
Williston, ND

Weather in January

January, like December, is a freezing cold winter month in Williston, North Dakota, with average temperature fluctuating between 7°F (-13.9°C) and 21°F (-6.1°C). In Williston, the average high-temperature in January is practically the same as in December - a still subzero cold 21°F (-6.1°C). Weather in January »

Weather in February

The last month of the winter, February, is also a subzero cold month in Williston, North Dakota, with average temperature varying between 7°F (-13.9°C) and 20.8°F (-6.2°C). The coldest month is February, with an average high-temperature of 20.8°F (-6.2°C) and an average low-temperature of 7°F (-13.9°C). Weather in February »

Weather in March

March, the first month of the spring, in Williston, is a wintry month, with average temperature ranging between min 22.5°F (-5.3°C) and max 37.2°F (2.9°C). In March, the average high-temperature soars, from a freezing cold 20.8°F (-6.2°C) in February, to a wintry 37.2°F (2.9°C). Weather in March »

Weather in April

April in Williston, North Dakota, is a cool spring month, with average temperature fluctuating between 34.3°F (1.3°C) and 51.4°F (10.8°C). In Williston, the average high-temperature increases, from a wintry 37.2°F (2.9°C) in March, to a fresh 51.4°F (10.8°C). Weather in April »

Weather in May

May, the last month of the spring, in Williston, is an enjoyable month, with average temperature fluctuating between 64.8°F (18.2°C) and 46.4°F (8°C). In May, the average high-temperature rises, from a fresh 51.4°F (10.8°C) in April, to a comfortable 64.8°F (18.2°C). Weather in May »

Weather in June

June, the first month of the summer, in Williston, is a moderately hot month, with average temperature fluctuating between 75°F (23.9°C) and 55.4°F (13°C). In Williston, the average high-temperature increases, from a comfortable 64.8°F (18.2°C) in May, to a warm 75°F (23.9°C). Weather in June »

Weather in July

July, like June, in Williston, North Dakota, is a moderately hot summer month, with average temperature fluctuating between 83.1°F (28.4°C) and 61.3°F (16.3°C). The warmest month is July, with an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 61.3°F (16.3°C). The average heat index is estimated at 84.4°F (29.1°C). Weather in July »

Weather in August

August, the last month of the summer, in Williston, is also a moderately hot month, with average temperature varying between 60.6°F (15.9°C) and 82°F (27.8°C). In August, the average high-temperature is practically the same as in July - a still warm 82°F (27.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Williston, North Dakota, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 52.7°F (11.5°C). In September, the average high-temperature drops, from a warm 82°F (27.8°C) in August, to a pleasant 71.2°F (21.8°C). Weather in September »

Weather in October

October, like September, in Williston, North Dakota, is a cool autumn month, with average temperature ranging between max 53.2°F (11.8°C) and min 38.8°F (3.8°C). In October, the average high-temperature declines considerably, from an agreeable 71.2°F (21.8°C) in September, to a fresh 53.2°F (11.8°C). Weather in October »

Weather in November

November, the last month of the autumn, in Williston, is another cold month, with temperature in the range of an average low of 24.3°F (-4.3°C) and an average high of 37.4°F (3°C). In November, the average high-temperature significantly decreases, from a cool 53.2°F (11.8°C) in October, to a cold 37.4°F (3°C). Weather in November »

Weather in December

December, the first month of the winter, in Williston, is still a freezing cold month, with average temperature fluctuating between 22.1°F (-5.5°C) and 10.6°F (-11.9°C). In Williston, the average high-temperature significantly decreases, from a cold 37.4°F (3°C) in November, to a subzero cold 22.1°F (-5.5°C). Weather in December »
[Resources]

FAQ

What is the most humid month in Williston?

The most humid month is January, with an average relative humidity of 89%.

How many days does it rain in Williston?

In Williston, North Dakota, during the entire year, the rain falls for 94.7 days and collects up to 12.52" (318mm) of precipitation.

When does it snow in Williston?

January through May, October through December are months with snowfall.

How many days does it snow in Williston?

In Williston, during the entire year, snow falls for 53.3 days, and aggregates up to 13.86" (352mm) of snow.

What is the coldest month in Williston?

The coldest month in Williston, North Dakota, is February, with an average high-temperature of 20.8°F (-6.2°C) and an average low-temperature of 7°F (-13.9°C).

What is the snowiest month in Williston?

February is the month with the most snowfall. Snow falls for 12.3 days and accumulates 3.07" (78mm) of snow.

When is the lowest UV index in Williston?

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

What is the rainiest month in Williston?

June is the month with the most rainfall. Rain falls for 14.2 days and accumulates 2.05" (52mm) of precipitation.

When it does not snow in Williston?

June through September are months without snowfall in Williston.

When are the longest days in Williston?

With an average of 16h of daylight, June has the longest days of the year in Williston.

What are the months with the highest UV index in Williston?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Williston.

What is the warmest month in Williston?

With an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 61.3°F (16.3°C), July is the warmest month.

What month has the most sunshine in Williston?

With an average of 11.6h of sunshine, July has the most sunshine of the year in Williston, North Dakota.

What is the least humid month in Williston?

August is the least humid month, with an average relative humidity of 48%.

What is the driest month in Williston?

December is the month with the least rainfall. Rain falls for 2.5 days and accumulates 0.35" (9mm) of precipitation.

What is the month with the shortest days in Williston?

With an average of 8.4h of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Williston?

The month with the least sunshine is December, with an average of 4h of sunshine.

Average temperature
Williston, ND

Average temperature - Williston, ND

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is February (20.8°F).

The month with the highest average low temperature is July (61.3°F).
The coldest months (with the lowest average low temperature) are January and February (7°F).

[Resources]

Average pressure
Williston, ND

Average pressure - Williston, ND

The month with the highest atmospheric pressure is February (30.17").
The month with the lowest atmospheric pressure is June (29.84").

[Resources]

Average wind speed
Williston, ND

Average wind speed - Williston, ND

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is February (8.9mph).

[Resources]

Average rainfall
Williston, ND

Average rainfall - Williston, ND

The wettest month (with the highest rainfall) is June (2.05").
The driest month (with the least rainfall) is December (0.35").

[Resources]

Average rainfall days
Williston, ND

Average rainfall days - Williston, ND

The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is December (2.5 days).

[Resources]

Average snowfall
Williston, ND

Average snowfall - Williston, ND

The month with the highest snowfall is February (3.07").
Months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days
Williston, ND

Average snowfall days - Williston, ND

The month with the highest number of snowfall days is February (12.3 days).
Months with the least snowfall days are June, July and August (0 days).

[Resources]

Average daylight / Average sunshine
Williston, ND

Average daylight / Average sunshine - Williston, ND

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.4h).

The month with the most sunshine is July (Average sunshine: 11.6h).
The month with the least sunshine is December (Average sunshine: 4h).

[Resources]

Average sunshine days
Williston, ND

Average sunshine days - Williston, ND

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (13.5 days).

[Resources]

Average visibility
Williston, ND

Average visibility - Williston, ND

Months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January and February (5mi).

[Resources]