Climate and monthly weather forecast
Saint Ignatius, MT

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Weather in January

January, the same as December, in Saint Ignatius, Montana, is a freezing cold winter month, with temperature in the range of an average high of 29.8°F (-1.2°C) and an average low of 18°F (-7.8°C). The arrival of January sees an average high-temperature of a still freezing cold 29.8°F (-1.2°C), hardly diverging from December's 28.4°F (-2°C). Weather in January »

Weather in February

The last month of the winter, February, is also a subzero cold month in Saint Ignatius, Montana, with an average temperature varying between 30.4°F (-0.9°C) and 17.6°F (-8°C). The average high-temperature during February registers at a still freezing cold 30.4°F (-0.9°C), maintaining a close resemblance to the previous month. Weather in February »

Weather in March

March, the first month of the spring in Saint Ignatius, is an icy month, with an average temperature ranging between max 39.2°F (4°C) and min 24.8°F (-4°C). The beginning of March signals a minor rise in the average high-temperature, moving from a freezing cold 30.4°F (-0.9°C) in February to a cold 39.2°F (4°C). Weather in March »

Weather in April

April in Saint Ignatius, Montana, is a frosty spring month, with an average temperature varying between 29.8°F (-1.2°C) and 48.7°F (9.3°C). Entering April, Saint Ignatius sees a temperature rise, with the average high-temperature advancing from March's cold 39.2°F (4°C) to a frosty 48.7°F (9.3°C). Weather in April »

Weather in May

May, the last month of the spring in Saint Ignatius, is a comfortable month, with an average temperature ranging between max 61°F (16.1°C) and min 36.7°F (2.6°C). Saint Ignatius's transition into May brings a rise in the average high-temperature, moving from a frosty 48.7°F (9.3°C) in April to a comfortable 61°F (16.1°C). Weather in May »

Weather in June

June, the first month of the summer in Saint Ignatius, is an agreeable month, with an average temperature varying between 68.5°F (20.3°C) and 43.3°F (6.3°C). June marks a minor ascent in the average high-temperature, adjusting from May's comfortable 61°F (16.1°C) to an agreeable 68.5°F (20.3°C). Weather in June »

Weather in July

July is a warm summer month in Saint Ignatius, Montana, with an average temperature ranging between min 49.3°F (9.6°C) and max 79.7°F (26.5°C). The highest temperatures are recorded in July, with averages reaching a high of 79.7°F (26.5°C) and a low of 49.3°F (9.6°C). Weather in July »

Weather in August

August, the last month of the summer in Saint Ignatius, is also a moderately hot month, with an average temperature ranging between max 79.3°F (26.3°C) and min 49.5°F (9.7°C). Transitioning into August, Saint Ignatius experiences an average high-temperature of a still moderately hot 79.3°F (26.3°C), marking a minor shift from the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Saint Ignatius, is still a pleasant month, with an average temperature varying between 42.3°F (5.7°C) and 68.5°F (20.3°C). In Saint Ignatius, the average high-temperature in September drops from a moderately hot 79.3°F (26.3°C) in August to an agreeable 68.5°F (20.3°C). Weather in September »

Weather in October

October, like September, in Saint Ignatius, Montana, is a cool autumn month, with temperature in the range of an average high of 51.8°F (11°C) and an average low of 32.7°F (0.4°C). Saint Ignatius's weather experiences a significant temperature drop with the arrival of October, falling from a pleasant 68.5°F (20.3°C) in September to a cool 51.8°F (11°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Saint Ignatius, Montana, with temperature in the range of an average high of 37.2°F (2.9°C) and an average low of 24.4°F (-4.2°C). November's arrival is marked by a significant decrease in the average high-temperature, moving from a cool 51.8°F (11°C) in October to a cold 37.2°F (2.9°C). Weather in November »

Weather in December

December, the first month of the winter in Saint Ignatius, is also a subzero cold month, with temperature in the range of an average high of 28.4°F (-2°C) and an average low of 16.7°F (-8.5°C). December is Saint Ignatius's coldest month, registering average high temperatures of 28.4°F (-2°C) and lows of 16.7°F (-8.5°C). Weather in December »
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the most humid month?

January is the most humid month, with an average relative humidity of 91%.

How much does it rain?

Throughout the year, there are 129.9 rainfall days, and 13.5" (343mm) of precipitation is accumulated.

When does it snow?

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

How much does it snow?

Throughout the year, there are 67.1 snowfall days, and 28.27" (718mm) of snow is accumulated.

What is the month with the least sunshine?

With an average of 4.7h of sunshine, January has the least sunshine of the year.

What is the snowiest month?

February is the month with the most snowfall. Snow falls for 14.1 days and accumulates 6.5" (165mm) of snow.

What are the months with the lowest UV index in Saint Ignatius?

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

When is Daylight Saving Time (DST) in Saint Ignatius?

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?

June is the month with the most rainfall. Rain falls for 15.7 days and accumulates 2.2" (56mm) of precipitation.

When it does not snow?

In Saint Ignatius, snow does not fall in June through August.

When are the longest days in Saint Ignatius?

The month with the longest days is June, with an average of 15h and 54min of daylight.

What part of the year is the hottest?

July, having an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 49.3°F (9.6°C), is the warmest month.

What is the driest month?

The months with the least rainfall in Saint Ignatius are July and August Rain falls for 8 days and accumulates 0.63" (16mm) of rain.

What month has the most sunshine?

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

What is the month with the highest UV index?

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

What is the least humid month?

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

What are the coldest months?

In Saint Ignatius, the average lowest temperatures are observed in December, with a high of 28.4°F (-2°C) and a low of 16.7°F (-8.5°C).

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 30min of daylight.

Average temperature
Saint Ignatius, MT

Average temperature - Saint Ignatius, MT

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (28.4°F).

The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (16.7°F).

Average pressure
Saint Ignatius, MT

Average pressure - Saint Ignatius, MT

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed
Saint Ignatius, MT

Average wind speed - Saint Ignatius, MT

The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest months (with the lowest average wind speed) are January, August and December (3.9mph).

Average humidity
Saint Ignatius, MT

Average humidity - Saint Ignatius, MT

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (49%).

Average rainfall
Saint Ignatius, MT

Average rainfall - Saint Ignatius, MT

The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are July and August (0.63").

Average rainfall days
Saint Ignatius, MT

Average rainfall days - Saint Ignatius, MT

The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is August (7.4 days).

Average snowfall
Saint Ignatius, MT

Average snowfall - Saint Ignatius, MT

The month with the highest snowfall is February (6.5").
The months with the least snowfall are June, July and August (0").

Average snowfall days
Saint Ignatius, MT

Average snowfall days - Saint Ignatius, MT

The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine
Saint Ignatius, MT

Average daylight / Average sunshine - Saint Ignatius, MT

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 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days
Saint Ignatius, MT

Average sunshine days - Saint Ignatius, MT

The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is February (11 days).

Average visibility
Saint Ignatius, MT

Average visibility - Saint Ignatius, MT

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).

Saint Ignatius, Montana, USA

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