Monthly weather forecast and climate
Simms, MT

Weather in January

January, like December, is a freezing cold winter month in Simms, Montana, with average temperature fluctuating between 31.3°F (-0.4°C) and 18.7°F (-7.4°C). In January, the average high-temperature is essentially the same as in December - a still freezing cold 31.3°F (-0.4°C). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Simms, Montana, with average temperature fluctuating between 31.3°F (-0.4°C) and 17.6°F (-8°C). In Simms, the average high-temperature in February remains the same as in January - a still subzero cold 31.3°F (-0.4°C). Weather in February »

Weather in March

March, the first month of the spring, in Simms, is a wintry month, with average temperature fluctuating between 27°F (-2.8°C) and 42.6°F (5.9°C). In March, the average high-temperature rises, from a subzero cold 31.3°F (-0.4°C) in February, to a wintry 42.6°F (5.9°C). Weather in March »

Weather in April

April is a cool spring month in Simms, Montana, with average temperature fluctuating between 51.4°F (10.8°C) and 34.3°F (1.3°C). In Simms, the average high-temperature slightly increases, from a cold 42.6°F (5.9°C) in March, to a cool 51.4°F (10.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Simms, Montana, with average temperature varying between 62.2°F (16.8°C) and 41.9°F (5.5°C). In May, the average high-temperature increases, from a cool 51.4°F (10.8°C) in April, to an enjoyable 62.2°F (16.8°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in Simms, Montana, with average temperature varying between 48.7°F (9.3°C) and 71.2°F (21.8°C). In Simms, the average high-temperature increases, from a comfortable 62.2°F (16.8°C) in May, to an agreeable 71.2°F (21.8°C). Weather in June »

Weather in July

July is a warm summer month in Simms, Montana, with temperature in the range of an average low of 55.6°F (13.1°C) and an average high of 82.2°F (27.9°C). With an average high-temperature of 82.2°F (27.9°C) and an average low-temperature of 55.6°F (13.1°C), July is the warmest month. The average heat index is evaluated at 82.2°F (27.9°C). Weather in July »

Weather in August

August, the last month of the summer, in Simms, is also a moderately hot month, with average temperature fluctuating between 56.7°F (13.7°C) and 81.1°F (27.3°C). In August, the average high-temperature is relatively the same as in July - a still moderately hot 81.1°F (27.3°C). Weather in August »

Weather in September

September, the first month of the autumn, in Simms, is still a pleasant month, with temperature in the range of an average low of 49.5°F (9.7°C) and an average high of 70.5°F (21.4°C). In Simms, Montana, the average high-temperature in September drops, from a moderately hot 81.1°F (27.3°C) in August, to a pleasant 70.5°F (21.4°C). Weather in September »

Weather in October

October, the same as September, is a cool autumn month in Simms, Montana, with average temperature varying between 54.5°F (12.5°C) and 36.7°F (2.6°C). In October, the average high-temperature declines considerably, from a pleasant 70.5°F (21.4°C) in September, to a cool 54.5°F (12.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cold month in Simms, Montana, with temperature in the range of an average high of 40.1°F (4.5°C) and an average low of 26.6°F (-3°C). In November, the average high-temperature significantly decreases, from a cool 54.5°F (12.5°C) in October, to a wintry 40.1°F (4.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Simms, Montana, with average temperature ranging between min 17.4°F (-8.1°C) and max 29.5°F (-1.4°C). With an average high-temperature of 29.5°F (-1.4°C) and an average low-temperature of 17.4°F (-8.1°C), December is the coldest month. Weather in December »
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FAQ

What is the most humid month in Simms?

The most humid month in Simms is January, with an average relative humidity of 78%.

How much does it rain in Simms?

Throughout the year, in Simms, Montana, there are 112.8 rainfall days, and 12.95" (329mm) of precipitation is accumulated.

What is the driest month in Simms?

Months with the least rainfall in Simms, Montana, are January and July Rain falls for 4.8 days and accumulates 0.63" (16mm) of rain.

When does it snow in Simms?

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

How much does it snow in Simms?

Throughout the year, in Simms, there are 69.4 snowfall days, and 35.35" (898mm) of snow is accumulated.

What is the month with the least sunshine in Simms?

January and December, with an average of 5.4h of sunshine, are months with the least sunshine.

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

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the snowiest month in Simms?

February is the month with the most snowfall. Snow falls for 14.4 days and accumulates 6.34" (161mm) of snow.

What is the wettest month in Simms?

June is the month with the most rainfall in Simms. Rain falls for 13.8 days and accumulates 2.05" (52mm) of precipitation.

When it does not snow in Simms?

June through August are months without snowfall in Simms, Montana.

When are the longest days in Simms?

June has the longest days of the year in Simms, with an average of 15.9h of daylight.

What is the warmest month in Simms?

With an average high-temperature of 82.2°F (27.9°C) and an average low-temperature of 55.6°F (13.1°C), July is the warmest month in Simms, Montana.

What month has the most sunshine in Simms?

July has the most sunshine of the year, with an average of 11.9h of sunshine.

When is the highest UV index in Simms?

July is the month with the highest UV index in Simms, with an average maximum UV index of 6.

What is the least humid month in Simms?

The least humid month in Simms, Montana, is August, with an average relative humidity of 41%.

What is the coldest month in Simms?

The coldest month in Simms is December, with an average high-temperature of 29.5°F (-1.4°C) and an average low-temperature of 17.4°F (-8.1°C).

What is the month with the shortest days in Simms?

With an average of 8.5h of daylight, December has the shortest days of the year in Simms.

Average temperature
Simms, MT

Average temperature - Simms, MT

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is December (29.5°F).

The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is December (17.4°F).

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Average pressure
Simms, MT

Average pressure - Simms, MT

Months with the highest atmospheric pressure are January and December (30.14").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed
Simms, MT

Average wind speed - Simms, MT

The windiest months (with the highest average wind speed) are January and November (10.7mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).

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Average rainfall
Simms, MT

Average rainfall - Simms, MT

The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are January and July (0.63").

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Average rainfall days
Simms, MT

Average rainfall days - Simms, MT

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (4.8 days).

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Average snowfall
Simms, MT

Average snowfall - Simms, MT

The month with the highest snowfall is February (6.34").
Months with the least snowfall are June, July and August (0").

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Average snowfall days
Simms, MT

Average snowfall days - Simms, MT

The month with the highest number of snowfall days is February (14.4 days).
Months with the least snowfall days are July and August (0 days).

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Average daylight / Average sunshine
Simms, MT

Average daylight / Average sunshine - Simms, MT

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.5h).

The month with the most sunshine is July (Average sunshine: 11.9h).
Months with the least sunshine are January and December (Average sunshine: 5.4).

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Average sunshine days
Simms, MT

Average sunshine days - Simms, MT

The month with the most sunshine days is September (18.8 days).
The month with the least sunshine days is April (10.3 days).

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Average UV index
Simms, MT

Average UV index - Simms, MT

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average visibility
Simms, MT

Average visibility - Simms, MT

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

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