Climate and monthly weather forecast
Grassy Butte, ND

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Weather in January

January, the same as December, in Grassy Butte, North Dakota, is a freezing cold winter month, with an average temperature ranging between max 21.4°F (-5.9°C) and min 7.3°F (-13.7°C). January, with its high-temperature average of 21.4°F (-5.9°C) and a low-temperature average of 7.3°F (-13.7°C), is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Grassy Butte, is also a subzero cold month, with temperature in the range of an average low of 7.7°F (-13.5°C) and an average high of 21.6°F (-5.8°C). Grassy Butte marks the onset of February with an average high-temperature of a still freezing cold 21.6°F (-5.8°C), subtly divergent from January's 21.4°F (-5.9°C). Weather in February »

Weather in March

The first month of the spring, March, is a wintry month in Grassy Butte, North Dakota, with an average temperature fluctuating between 23°F (-5°C) and 37.9°F (3.3°C). March's onset is marked by a clear temperature increase, soaring from a freezing cold 21.6°F (-5.8°C) in February to an icy 37.9°F (3.3°C). Weather in March »

Weather in April

April is a cool spring month in Grassy Butte, North Dakota, with an average temperature ranging between min 34.5°F (1.4°C) and max 51.3°F (10.7°C). Grassy Butte's transition into April brings a rise in the average high-temperature, moving from an icy 37.9°F (3.3°C) in March to a fresh 51.3°F (10.7°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Grassy Butte, North Dakota, with an average temperature varying between 46°F (7.8°C) and 64.6°F (18.1°C). The beginning of May signals a rise in the average high-temperature, moving from a fresh 51.3°F (10.7°C) in April to a refreshing 64.6°F (18.1°C). Weather in May »

Weather in June

June, the first month of the summer in Grassy Butte, is a moderately hot month, with an average temperature fluctuating between 54.9°F (12.7°C) and 74.8°F (23.8°C). The shift from May to June brings an increase in the average high-temperature, moving from a comfortable 64.6°F (18.1°C) to a warm 74.8°F (23.8°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Grassy Butte, North Dakota, with temperature in the range of an average low of 61°F (16.1°C) and an average high of 83.1°F (28.4°C). In Grassy Butte, July is identified by the highest average temperatures, reaching a peak of 83.1°F (28.4°C) and a low of 61°F (16.1°C). The heat index value for July is estimated at 84.2°F (29°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Grassy Butte, North Dakota, with an average temperature varying between 81.9°F (27.7°C) and 60.4°F (15.8°C). August's weather displays an average high-temperature of a still moderately hot 81.9°F (27.7°C), slightly varied from July's 83.1°F (28.4°C). Weather in August »

Weather in September

September, the first month of the autumn in Grassy Butte, is still a pleasant month, with an average temperature varying between 52.2°F (11.2°C) and 71.2°F (21.8°C). The onset of September introduces a moderate change in Grassy Butte's weather, with average high-temperatures falling from August's warm 81.9°F (27.7°C) to a pleasant 71.2°F (21.8°C). Weather in September »

Weather in October

October, the same as September, is another fresh autumn month in Grassy Butte, North Dakota, with an average temperature fluctuating between 53.2°F (11.8°C) and 38.5°F (3.6°C). Grassy Butte's transition into October marks a considerable drop in the average high-temperature, moving down 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 Grassy Butte, is another cold month, with an average temperature ranging between min 25.2°F (-3.8°C) and max 37.8°F (3.2°C). With the onset of November, Grassy Butte's average high-temperature experiences a noticeable drop, receding from October's fresh 53.2°F (11.8°C) to an icy 37.8°F (3.2°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Grassy Butte, North Dakota, with an average temperature ranging between min 11.3°F (-11.5°C) and max 23.2°F (-4.9°C). December is marked by a distinct decrease in the average high-temperature, falling from a cold 37.8°F (3.2°C) in November to a subzero cold 23.2°F (-4.9°C). Weather in December »

Frequently asked questions

What is the coldest time of year?

January, characterized by an average high temperature of 21.4°F (-5.9°C) and a low temperature of 7.3°F (-13.7°C), is generally the coldest month.

What is the most humid month?

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

What is the driest month?

The months with the least rainfall are January and February Rain falls for 3.3 days and accumulates 0.43" (11mm) of rain.

How many days does it rain in Grassy Butte?

Throughout the year, in Grassy Butte, there are 91.6 rainfall days, and 12.64" (321mm) of precipitation is accumulated.

When does it snow?

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

How many days does it snow?

Throughout the year, there are 58.2 snowfall days, and 16.54" (420mm) of snow is accumulated.

What are the months with the least sunshine?

The months with the least sunshine are January and December, with an average of 4h of sunshine.

What are the months with the lowest UV index?

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

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.

What is the wettest month?

The month with the most rainfall in Grassy Butte, North Dakota, is June, when the rain falls for 12.6 days and typically aggregates up to 1.85" (47mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

When are the longest days?

With an average of 15h and 54min of daylight, June has the longest days of the year.

What is the month with the highest UV index?

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

What are the warmest months?

Grassy Butte witnesses the warmest weather in July, with temperatures averaging a high of 83.1°F (28.4°C) and a low of 61°F (16.1°C).

What month has the most sunshine?

The month with the most sunshine is July, with an average of 11.6h of sunshine.

What is the least humid month?

With an average relative humidity of 49%, August is the least humid month in Grassy Butte.

When does it snow the most in Grassy Butte?

The month with the most snowfall is December, when snow falls for 11.2 days and typically aggregates up to 3.07" (78mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 8h and 30min of daylight.

Average temperature
Grassy Butte, ND

Average temperature - Grassy Butte, ND

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (21.4°F).

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).

Average pressure
Grassy Butte, ND

Average pressure - Grassy Butte, ND

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

Average wind speed
Grassy Butte, ND

Average wind speed - Grassy Butte, ND

The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).

Average humidity
Grassy Butte, ND

Average humidity - Grassy Butte, ND

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (49%).

Average rainfall
Grassy Butte, ND

Average rainfall - Grassy Butte, ND

The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are January and February (0.43").

Average rainfall days
Grassy Butte, ND

Average rainfall days - Grassy Butte, ND

The month with the highest number of rainy days is June (12.6 days).
The month with the least rainy days is February (2.9 days).

Average snowfall
Grassy Butte, ND

Average snowfall - Grassy Butte, ND

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

Average snowfall days
Grassy Butte, ND

Average snowfall days - Grassy Butte, ND

The months with the highest number of snowfall days are January and December (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Grassy Butte, ND

Average daylight / Average sunshine - Grassy Butte, ND

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

The month with the most sunshine is July (Average sunshine: 11h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).

Average sunshine days
Grassy Butte, ND

Average sunshine days - Grassy Butte, ND

The month with the most sunshine days is September (20.5 days).
The month with the least sunshine days is April (14.9 days).

Average UV index
Grassy Butte, ND

Average UV index - Grassy Butte, ND

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February and December (UV index 1).

Average visibility
Grassy Butte, ND

Average visibility - Grassy Butte, ND

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

Grassy Butte, North Dakota, USA

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