Climate and monthly weather forecast
East Helena, MT

Weather in January

January, the same as December, in East Helena, Montana, is a freezing cold winter month, with an average temperature fluctuating between 16°F (-8.9°C) and 30.4°F (-0.9°C). In January, the average high-temperature is practically the same as in December - a still freezing cold 30.4°F (-0.9°C). Weather in January »

Weather in February

February, the last month of the winter in East Helena, is also a subzero cold month, with an average temperature varying between 29.7°F (-1.3°C) and 14.7°F (-9.6°C). In East Helena, the average high-temperature in February is almost the same as in January - a still freezing cold 29.7°F (-1.3°C). Weather in February »

Weather in March

March, the first month of the spring in East Helena, is a cold month, with an average temperature varying between 39.7°F (4.3°C) and 23.2°F (-4.9°C). In March, the average high-temperature increases from a freezing cold 29.7°F (-1.3°C) in February to a wintry 39.7°F (4.3°C). Weather in March »

Weather in April

April is a chilly spring month in East Helena, Montana, with an average temperature ranging between max 47.8°F (8.8°C) and min 28.8°F (-1.8°C). In East Helena, the average high-temperature in April slightly increases from a wintry 39.7°F (4.3°C) in March to a frosty 47.8°F (8.8°C). Weather in April »

Weather in May

May, the last month of the spring in East Helena, is a moderate month, with temperature in the range of an average low of 36.9°F (2.7°C) and an average high of 59.4°F (15.2°C). In May, the average high-temperature rises from a frosty 47.8°F (8.8°C) in April to a mild 59.4°F (15.2°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in East Helena, Montana, with an average temperature fluctuating between 69.4°F (20.8°C) and 44.2°F (6.8°C). In East Helena, the average high-temperature in June increases from a mild 59.4°F (15.2°C) in May to an agreeable 69.4°F (20.8°C). Weather in June »

Weather in July

July in East Helena, Montana, is a moderately hot summer month, with an average temperature varying between 80.2°F (26.8°C) and 50.4°F (10.2°C). July is the warmest month, with an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 50.4°F (10.2°C). Weather in July »

Weather in August

August, the last month of the summer in East Helena, is another warm month, with an average temperature fluctuating between 78.1°F (25.6°C) and 50.2°F (10.1°C). In East Helena, the average high-temperature in August is practically the same as in July - a still warm 78.1°F (25.6°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in East Helena, Montana, with an average temperature fluctuating between 68.2°F (20.1°C) and 43.9°F (6.6°C). In East Helena, the average high-temperature in September decreases from a moderately hot 78.1°F (25.6°C) in August to a pleasant 68.2°F (20.1°C). Weather in September »

Weather in October

October, the same as September, is another fresh autumn month in East Helena, Montana, with an average temperature ranging between max 51.3°F (10.7°C) and min 32.7°F (0.4°C). In October, the average high-temperature plummets from a pleasant 68.2°F (20.1°C) in September to a fresh 51.3°F (10.7°C). Weather in October »

Weather in November

November, the last month of the autumn in East Helena, is another cold month, with temperature in the range of an average low of 22.1°F (-5.5°C) and an average high of 37.4°F (3°C). In East Helena, the average high-temperature in November drops from a cool 51.3°F (10.7°C) in October to a cold 37.4°F (3°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in East Helena, Montana, with temperature in the range of an average low of 14.2°F (-9.9°C) and an average high of 27.7°F (-2.4°C). December is the coldest month, with an average high-temperature of 27.7°F (-2.4°C) and an average low-temperature of 14.2°F (-9.9°C). Weather in December »
[Resources]

FAQ

What is the most humid month in East Helena?

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

What is the driest month in East Helena?

January and December are months with the least rain in East Helena, Montana, when the rain falls for 8.4 days and typically aggregates up to 0.63" (16mm) of rain.

How many days does it rain in East Helena?

In East Helena, during the entire year, the rain falls for 123.7 days and collects up to 12.4" (315mm) of precipitation.

When does it snow in East Helena?

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

How much does it snow in East Helena?

In East Helena, during the entire year, snow falls for 80.4 days and aggregates up to 34.88" (886mm) of snow.

What is the month with the least sunshine in East Helena?

The month with the least sunshine is January, with an average of 5.6h of sunshine.

When does it snow the most in East Helena?

February is the month with the most snowfall in East Helena, Montana. Snow falls for 16.2 days and accumulates 6.18" (157mm) of snow.

When is the lowest UV index in East Helena?

February is the month with the lowest UV index, with an average maximum UV index of 1.

When is Daylight Saving Time (DST) in East Helena?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from MDT to MST.

What is the wettest month in East Helena?

June is the month with the most rainfall in East Helena, Montana. Rain falls for 13.3 days and accumulates 2.01" (51mm) of precipitation.

When it does not snow in East Helena?

In East Helena, Montana, snow does not fall in June through August.

When are the longest days in East Helena?

The month with the longest days in East Helena is June, with an average of 15h and 46min of daylight.

What is the warmest month in East Helena?

The warmest month in East Helena is July, with an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 50.4°F (10.2°C).

What are the least humid months in East Helena?

The months with the lowest humidity in East Helena, Montana, are July and August, with an average relative humidity of 46%.

What month has the most sunshine in East Helena?

With an average of 11.7h of sunshine, July has the most sunshine of the year in East Helena.

When is the highest UV index in East Helena?

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

What is the coldest month in East Helena?

December is the coldest month in East Helena, Montana, with an average high-temperature of 27.7°F (-2.4°C) and an average low-temperature of 14.2°F (-9.9°C).

What is the month with the shortest days in East Helena?

December has the shortest days of the year in East Helena, with an average of 8h and 38min of daylight.

Average temperature
East Helena, MT

Average temperature - East Helena, MT

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (27.7°F).

The month with the highest average low temperature is July (50.4°F).
The coldest month (with the lowest average low temperature) is December (14.2°F).

[Resources]

Average pressure
East Helena, MT

Average pressure - East Helena, MT

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

[Resources]

Average wind speed
East Helena, MT

Average wind speed - East Helena, MT

The windiest month (with the highest average wind speed) is November (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

[Resources]

Average humidity
East Helena, MT

Average humidity - East Helena, MT

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (46%).

[Resources]

Average rainfall
East Helena, MT

Average rainfall - East Helena, MT

The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and December (0.63").

[Resources]

Average rainfall days
East Helena, MT

Average rainfall days - East Helena, MT

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is November (7 days).

[Resources]

Average snowfall
East Helena, MT

Average snowfall - East Helena, MT

The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July and August (0").

[Resources]

Average snowfall days
East Helena, MT

Average snowfall days - East Helena, MT

The month with the highest number of snowfall days is February (16.2 days).
The months with the least snowfall days are July and August (0 days).

[Resources]

Average daylight / Average sunshine
East Helena, MT

Average daylight / Average sunshine - East Helena, MT

The month with the longest days is June (Average daylight: 15h and 46min).
The month with the shortest days is December (Average daylight: 8h and 38min).

The month with the most sunshine is July (Average sunshine: 11.7h).
The month with the least sunshine is January (Average sunshine: 5.6h).

[Resources]

Average sunshine days
East Helena, MT

Average sunshine days - East Helena, MT

The month with the most sunshine days is July (20.5 days).
The month with the least sunshine days is April (9.8 days).

[Resources]

Average visibility
East Helena, MT

Average visibility - East Helena, MT

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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location