Climate and monthly weather forecast
Saint Johns, MT

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Weather in January

January, the same as December, in Saint Johns, Montana, is a freezing cold winter month, with an average temperature fluctuating between 27.1°F (-2.7°C) and 14.4°F (-9.8°C). During January and December, Saint Johns registers its lowest temperatures, averaging a high of 27.1°F (-2.7°C). Weather in January »

Weather in February

The last month of the winter, February, is also a subzero cold month in Saint Johns, Montana, with an average temperature fluctuating between 27.7°F (-2.4°C) and 13.5°F (-10.3°C). Saint Johns's shift from January to February is accompanied by an average high-temperature of a still freezing cold 27.7°F (-2.4°C), a slight deviation from 27.1°F (-2.7°C). Weather in February »

Weather in March

March, the first month of the spring in Saint Johns, is a wintry month, with an average temperature varying between 24.6°F (-4.1°C) and 39.7°F (4.3°C). The onset of March marks an increase in the average high-temperature, moving from a subzero cold 27.7°F (-2.4°C) in February to a wintry 39.7°F (4.3°C). Weather in March »

Weather in April

April in Saint Johns, Montana, is a fresh spring month, with an average temperature fluctuating between 53.2°F (11.8°C) and 36.3°F (2.4°C). An increase in the average high-temperature marks April, moving from March's icy 39.7°F (4.3°C) to a fresh 53.2°F (11.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Saint Johns, Montana, with temperature in the range of an average high of 64.6°F (18.1°C) and an average low of 46.2°F (7.9°C). May's arrival signals an increase in average high-temperatures, moving from April's cool 53.2°F (11.8°C) to a refreshing 64.6°F (18.1°C). Weather in May »

Weather in June

June, the first month of the summer in Saint Johns, is a pleasant month, with temperature in the range of an average high of 73°F (22.8°C) and an average low of 53.1°F (11.7°C). June introduces a marginal temperature uplift, with average high-temperatures adjusting from May's comfortable 64.6°F (18.1°C) to a pleasant 73°F (22.8°C). Weather in June »

Weather in July

July in Saint Johns, Montana, is a warm summer month, with temperature in the range of an average high of 82.8°F (28.2°C) and an average low of 60.4°F (15.8°C). The month of July sees the highest average temperatures, reaching 82.8°F (28.2°C) at the peak and 60.4°F (15.8°C) at the low. For July, the heat index is appraised at 82.4°F (28°C). Weather in July »

Weather in August

August, the last month of the summer in Saint Johns, is also a moderately hot month, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 61.3°F (16.3°C). On the advent of August, Saint Johns's average high-temperature exhibits a minor adjustment to a still warm 81.3°F (27.4°C) from July's 82.8°F (28.2°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Saint Johns, Montana, with an average temperature varying between 70.5°F (21.4°C) and 52.5°F (11.4°C). September ushers in a slight temperature change, with average high-temperatures reducing from August's moderately hot 81.3°F (27.4°C) to an agreeable 70.5°F (21.4°C). Weather in September »

Weather in October

October, like September, in Saint Johns, Montana, is another fresh autumn month, with an average temperature fluctuating between 38.8°F (3.8°C) and 54.3°F (12.4°C). A notable decrease in the average high-temperature is observed during October, falling from a pleasant 70.5°F (21.4°C) in September to a cool 54.3°F (12.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cold month in Saint Johns, Montana, with temperature in the range of an average low of 26.2°F (-3.2°C) and an average high of 39.4°F (4.1°C). As Saint Johns transitions into November, a marked decrease in the average high-temperature is observed, dropping from a fresh 54.3°F (12.4°C) in October to a wintry 39.4°F (4.1°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Saint Johns, Montana, with an average temperature varying between 27.1°F (-2.7°C) and 15.4°F (-9.2°C). The months of January and December bring the lowest temperatures, averaging a high of 27.1°F (-2.7°C). Weather in December »
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Frequently asked questions

What is the coldest month in Saint Johns?

January and December in Saint Johns are characterised by lowest temperatures, with an average high of 27.1°F (-2.7°C).

What is the most humid month in Saint Johns?

January is the most humid month in Saint Johns, with an average relative humidity of 83%.

How much does it rain in Saint Johns?

In Saint Johns, during the entire year, the rain falls for 98.7 days and collects up to 8.23" (209mm) of precipitation.

When does it snow in Saint Johns?

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

How many days does it snow in Saint Johns?

Throughout the year, in Saint Johns, Montana, there are 53.5 snowfall days, and 14.25" (362mm) of snow is accumulated.

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

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

What is the snowiest month in Saint Johns?

The month with the most snowfall in Saint Johns, Montana, is February, when snow falls for 11 days and typically aggregates up to 2.72" (69mm) of snow.

What is the month with the least sunshine in Saint Johns?

February has the least sunshine of the year, with an average of 5.3h of sunshine.

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

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Saint Johns, Montana, 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 rainiest month in Saint Johns?

The month with the most rainfall is June, when the rain falls for 13.4 days and typically aggregates up to 1.5" (38mm) of precipitation.

When it does not snow in Saint Johns?

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

When are the longest days in Saint Johns?

June has the longest days of the year, with an average of 16h and 6min of daylight.

What is the warmest month in Saint Johns?

Temperature records mark July as the warmest month, with highs averaging 82.8°F (28.2°C) and lows at 60.4°F (15.8°C).

What month has the most sunshine in Saint Johns?

July has the most sunshine of the year in Saint Johns, with an average of 12h of sunshine.

What is the month with the highest UV index in Saint Johns?

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

What is the least humid month in Saint Johns?

The least humid month is August, with an average relative humidity of 40%.

What is the driest month in Saint Johns?

The month with the least rainfall is December, when the rain falls for 4.4 days and typically collects 0.31" (8mm) of precipitation.

What is the month with the shortest days in Saint Johns?

December has the shortest days of the year, with an average of 8h and 18min of daylight.

Average temperature
Saint Johns, MT

Average temperature - Saint Johns, MT

The warmest month (with the highest average high temperature) is July (82.8°F).
The months with the lowest average high temperature are January and December (27.1°F).

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).

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Average pressure
Saint Johns, MT

Average pressure - Saint Johns, MT

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed
Saint Johns, MT

Average wind speed - Saint Johns, MT

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

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Average rainfall
Saint Johns, MT

Average rainfall - Saint Johns, MT

The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is December (0.31").

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Average rainfall days
Saint Johns, MT

Average rainfall days - Saint Johns, MT

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (4 days).

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Average snowfall
Saint Johns, MT

Average snowfall - Saint Johns, MT

The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July and August (0").

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Average snowfall days
Saint Johns, MT

Average snowfall days - Saint Johns, MT

The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Saint Johns, MT

Average daylight / Average sunshine - Saint Johns, MT

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

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Average sunshine days
Saint Johns, MT

Average sunshine days - Saint Johns, MT

The month with the most sunshine days is September (20.3 days).
The month with the least sunshine days is April (12.8 days).

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Average UV index
Saint Johns, MT

Average UV index - Saint Johns, MT

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

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Average visibility
Saint Johns, MT

Average visibility - Saint Johns, MT

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

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Saint Johns, Montana, USA

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