Monthly weather forecast and climate
Ismay, MT

January, the same as December, in Ismay, Montana, is a freezing cold winter month, with average temperature varying between 26.1°F (-3.3°C) and 13.3°F (-10.4°C). The coldest month is January, with an average high-temperature of 26.1°F (-3.3°C) and an average low-temperature of 13.3°F (-10.4°C). Weather in January »

The last month of the winter, February, is also a subzero cold month in Ismay, Montana, with average temperature varying between 26.8°F (-2.9°C) and 13.5°F (-10.3°C). In Ismay, the average high-temperature in February is practically the same as in January - a still subzero cold 26.8°F (-2.9°C). Weather in February »

March, the first month of the spring, in Ismay, is a wintry month, with average temperature varying between 41.7°F (5.4°C) and 26.4°F (-3.1°C). In March, the average high-temperature increases considerably, from a subzero cold 26.8°F (-2.9°C) in February, to a wintry 41.7°F (5.4°C). Weather in March »

April is a cool spring month in Ismay, Montana, with temperature in the range of an average low of 34.9°F (1.6°C) and an average high of 51.8°F (11°C). In April, the average high-temperature increases, from a cold 41.7°F (5.4°C) in March, to a fresh 51.8°F (11°C). Weather in April »

May, the last month of the spring, in Ismay, is an enjoyable month, with temperature in the range of an average low of 45.3°F (7.4°C) and an average high of 63.5°F (17.5°C). In May, the average high-temperature increases, from a cool 51.8°F (11°C) in April, to a comfortable 63.5°F (17.5°C). Weather in May »

June, the first month of the summer, in Ismay, is a moderately hot month, with average temperature varying between 75.2°F (24°C) and 55.4°F (13°C). In June, the average high-temperature increases, from an enjoyable 63.5°F (17.5°C) in May, to a warm 75.2°F (24°C). Weather in June »

July, the same as June, is another warm summer month in Ismay, Montana, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 84°F (28.9°C). The warmest month is July, with an average high-temperature of 84°F (28.9°C) and an average low-temperature of 63.3°F (17.4°C). The average heat index in July is estimated at 84.7°F (29.3°C). Weather in July »

August, the last month of the summer, in Ismay, is another warm month, with temperature in the range of an average high of 81.9°F (27.7°C) and an average low of 62.2°F (16.8°C). In August, the average high-temperature is practically the same as in July - a still moderately hot 81.9°F (27.7°C). Weather in August »

The first month of the autumn, September, is still a pleasant month in Ismay, Montana, with average temperature fluctuating between 54.1°F (12.3°C) and 72.1°F (22.3°C). In September, the average high-temperature drops, from a warm 81.9°F (27.7°C) in August, to a pleasant 72.1°F (22.3°C). Weather in September »

October, like September, in Ismay, Montana, is another fresh autumn month, with average temperature varying between 54.3°F (12.4°C) and 39.4°F (4.1°C). In Ismay, the average high-temperature in October declines considerably, from a pleasant 72.1°F (22.3°C) in September, to a fresh 54.3°F (12.4°C). Weather in October »

November, the last month of the autumn, in Ismay, is also a wintry month, with average temperature ranging between max 40.1°F (4.5°C) and min 26.8°F (-2.9°C). In November, the average high-temperature drops, from a fresh 54.3°F (12.4°C) in October, to a cold 40.1°F (4.5°C). Weather in November »

The first month of the winter, December, is also a subzero cold month in Ismay, Montana, with average temperature fluctuating between 26.6°F (-3°C) and 14.9°F (-9.5°C). In Ismay, the average high-temperature drops, from a cold 40.1°F (4.5°C) in November, to a freezing cold 26.6°F (-3°C). Weather in December »

What is the coldest month in Ismay?

January is the coldest month in Ismay, with an average high-temperature of 26.1°F (-3.3°C) and an average low-temperature of 13.3°F (-10.4°C).

What is the most humid month in Ismay?

With an average relative humidity of 85%, January is the most humid month in Ismay, Montana.

How much does it rain in Ismay?

In Ismay, Montana, during the entire year, the rain falls for 109 days and collects up to 15.12" (384mm) of precipitation.

What is the driest month in Ismay?

January and December are months with the least rain in Ismay when the rain falls for 3.1 days and typically aggregates up to 0.55" (14mm) of rain.

When does it snow in Ismay?

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

How many days does it snow in Ismay?

In Ismay, during the entire year, snow falls for 62.4 days, and aggregates up to 21.97" (558mm) of snow.

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

Months with the lowest UV index in Ismay are January and December, with an average maximum UV index of 1.

What is the snowiest month in Ismay?

The month with the most snowfall in Ismay is February when snow falls for 12 days and typically aggregates up to 3.86" (98mm) of snow.

What is the month with the least sunshine in Ismay?

Months with the least sunshine in Ismay are February and December, with an average of 4.8h of sunshine.

What is the rainiest month in Ismay?

The month with the most rainfall in Ismay is May when the rain falls for 15.7 days and typically aggregates up to 2.6" (66mm) of precipitation.

When it does not snow in Ismay?

June through August are months without snowfall in Ismay.

When are the longest days in Ismay?

The month with the longest days is June, with an average of 15.8h of daylight.

What is the warmest month in Ismay?

With an average high-temperature of 84°F (28.9°C) and an average low-temperature of 63.3°F (17.4°C), July is the warmest month in Ismay.

What are the months with the most sunshine in Ismay?

Months with the most sunshine in Ismay are July and August, with an average of 11.6h of sunshine.

What is the month with the highest UV index in Ismay?

With an average maximum UV index of 7, July is the month with the highest UV index in Ismay.

What is the least humid month in Ismay?

August is the least humid month in Ismay, Montana, with an average relative humidity of 46%.

What is the month with the shortest days in Ismay?

With an average of 8.7h of daylight, December has the shortest days of the year.
Average temperature - Ismay, MT
Average pressure - Ismay, MT

Months with the highest atmospheric pressure are January and February (30.15").
The month with the lowest atmospheric pressure is June (29.84").

Average wind speed - Ismay, MT

The windiest months (with the highest average wind speed) are April and October (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (10.1mph).

Average rainfall - Ismay, MT

The wettest month (with the highest rainfall) is May (2.6").
The driest months (with the least rainfall) are January and December (0.55").

Average rainfall days - Ismay, MT

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (3.1 days).

Average snowfall - Ismay, MT
Average snowfall days - Ismay, MT

The month with the highest number of snowfall days is February (12 days).
Months with the least snowfall days are July and August (0 days).

Average daylight / Average sunshine - Ismay, MT

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.7h).

Months with the most sunshine are July and August (Average sunshine: 11.6h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

Average sunshine days - Ismay, MT

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.9 days).

Average visibility - Ismay, 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).