Climate and monthly weather forecast
Idaho Falls, ID

An eye-catching shot of the Snake River, Idaho Falls, with a view of the iconic Idaho Falls Temple in the back
An eye-catching shot of the Snake River, Idaho Falls, with a view of the iconic Idaho Falls Temple in the back

Weather in January

January, the same as December, in Idaho Falls, Idaho, is a freezing cold winter month, with an average temperature ranging between min 14.2°F (-9.9°C) and max 28°F (-2.2°C). In Idaho Falls, the average high-temperature in January is almost the same as in December - a still subzero cold 28°F (-2.2°C). Weather in January »

Weather in February

The last month of the winter, February, is also a subzero cold month in Idaho Falls, Idaho, with temperature in the range of an average low of 18.1°F (-7.7°C) and an average high of 31.5°F (-0.3°C). In February, the average high-temperature is practically the same as in January - a still subzero cold 31.5°F (-0.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Idaho Falls, Idaho, with temperature in the range of an average high of 43°F (6.1°C) and an average low of 27.9°F (-2.3°C). In Idaho Falls, the average high-temperature in March rises from a subzero cold 31.5°F (-0.3°C) in February to a frosty 43°F (6.1°C). Weather in March »

Weather in April

April in Idaho Falls, Idaho, is a cool spring month, with an average temperature varying between 53.6°F (12°C) and 34.3°F (1.3°C). In April, the average high-temperature rises from a chilly 43°F (6.1°C) in March to a fresh 53.6°F (12°C). Weather in April »

Weather in May

May, the last month of the spring in Idaho Falls, is a comfortable month, with temperature in the range of an average low of 41.2°F (5.1°C) and an average high of 64.4°F (18°C). In May, the average high-temperature rises from a cool 53.6°F (12°C) in April to an enjoyable 64.4°F (18°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Idaho Falls, Idaho, with an average temperature ranging between min 47.1°F (8.4°C) and max 75°F (23.9°C). In Idaho Falls, the average high-temperature in June rises from a comfortable 64.4°F (18°C) in May to a warm 75°F (23.9°C). Weather in June »

Weather in July

July is a tropical summer month in Idaho Falls, Idaho, with an average temperature varying between 86.2°F (30.1°C) and 54.1°F (12.3°C). The warmest month is July, with an average high-temperature of 86.2°F (30.1°C) and an average low-temperature of 54.1°F (12.3°C). Weather in July »

Weather in August

August, the last month of the summer in Idaho Falls, is also a moderately hot month, with an average temperature ranging between max 84.4°F (29.1°C) and min 54.3°F (12.4°C). In August, the average high-temperature is relatively the same as in July - a moderately hot 84.4°F (29.1°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Idaho Falls, Idaho, with an average temperature ranging between min 49.5°F (9.7°C) and max 73.6°F (23.1°C). In September, the average high-temperature drops from 84.4°F (29.1°C) in August to a still warm 73.6°F (23.1°C). Weather in September »

Weather in October

October, the same as September, in Idaho Falls, Idaho, is another mild autumn month, with an average temperature fluctuating between 55.6°F (13.1°C) and 37.2°F (2.9°C). In Idaho Falls, the average high-temperature in October plummets from a moderately hot 73.6°F (23.1°C) in September to a moderate 55.6°F (13.1°C). Weather in October »

Weather in November

November, the last month of the autumn in Idaho Falls, is also a wintry month, with an average temperature fluctuating between 41.2°F (5.1°C) and 26.1°F (-3.3°C). In Idaho Falls, the average high-temperature in November plummets from a mild 55.6°F (13.1°C) in October to a cold 41.2°F (5.1°C). Weather in November »

Weather in December

December, the first month of the winter in Idaho Falls, is still a freezing cold month, with an average temperature varying between 27.9°F (-2.3°C) and 15.8°F (-9°C). The coldest month is December, with an average high-temperature of 27.9°F (-2.3°C) and an average low-temperature of 15.8°F (-9°C). Weather in December »
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FAQ

What is the most humid month in Idaho Falls?

With an average relative humidity of 90%, January is the most humid month.

How much does it rain in Idaho Falls?

In Idaho Falls, Idaho, during the entire year, the rain falls for 84.3 days and collects up to 6.97" (177mm) of precipitation.

When does it snow in Idaho Falls?

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

What is the snowiest month in Idaho Falls?

January is the month with the most snowfall. Snow falls for 12.8 days and accumulates 3.86" (98mm) of snow.

How much does it snow in Idaho Falls?

Throughout the year, there are 54.4 snowfall days, and 16.89" (429mm) of snow is accumulated.

What is the month with the least sunshine in Idaho Falls?

The month with the least sunshine in Idaho Falls is January, with an average of 4.7h of sunshine.

What is the month with the lowest UV index in Idaho Falls?

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

When is Daylight Saving Time (DST) in Idaho Falls?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Idaho Falls, Idaho, 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 rainiest month in Idaho Falls?

The months with the most rainfall in Idaho Falls, Idaho, are May and September, with an average 0.83" (21mm) of precipitation.

When it does not snow in Idaho Falls?

In Idaho Falls, Idaho, snow does not fall in June through August.

When are the longest days in Idaho Falls?

With an average of 15h and 22min of daylight, June has the longest days of the year.

What is the warmest month in Idaho Falls?

July is the warmest month in Idaho Falls, Idaho, with an average high-temperature of 86.2°F (30.1°C) and an average low-temperature of 54.1°F (12.3°C).

What is the driest month in Idaho Falls?

The month with the least rainfall is July, when the rain falls for 6.6 days and typically collects 0.35" (9mm) of precipitation.

What month has the most sunshine in Idaho Falls?

The month with the most sunshine is July, with an average of 11.8h of sunshine.

When is the highest UV index in Idaho Falls?

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

What is the least humid month in Idaho Falls?

With an average relative humidity of 35%, August is the least humid month in Idaho Falls.

What is the coldest month in Idaho Falls?

December is the coldest month, with an average high-temperature of 27.9°F (-2.3°C) and an average low-temperature of 15.8°F (-9°C).

What is the month with the shortest days in Idaho Falls?

December has the shortest days of the year, with an average of 9h and 1min of daylight.

Average temperature
Idaho Falls, ID

Average temperature - Idaho Falls, ID

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (27.9°F).

The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).

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Average pressure
Idaho Falls, ID

Average pressure - Idaho Falls, ID

The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Idaho Falls, ID

Average wind speed - Idaho Falls, ID

The windiest month (with the highest average wind speed) is April (9mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).

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Average rainfall
Idaho Falls, ID

Average rainfall - Idaho Falls, ID

The wettest months (with the highest rainfall) are May and September (0.83").
The driest month (with the least rainfall) is July (0.35").

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Average rainfall days
Idaho Falls, ID

Average rainfall days - Idaho Falls, ID

The month with the highest number of rainy days is May (10.7 days).
The month with the least rainy days is January (3.7 days).

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Average snowfall
Idaho Falls, ID

Average snowfall - Idaho Falls, ID

The month with the highest snowfall is January (3.86").
The months with the least snowfall are June, July and August (0").

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Average snowfall days
Idaho Falls, ID

Average snowfall days - Idaho Falls, ID

The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Idaho Falls, ID

Average daylight / Average sunshine - Idaho Falls, ID

The month with the longest days is June (Average daylight: 15h and 22min).
The month with the shortest days is December (Average daylight: 9h and 1min).

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).

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Average sunshine days
Idaho Falls, ID

Average sunshine days - Idaho Falls, ID

The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is February (16.2 days).

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Average UV index
Idaho Falls, ID

Average UV index - Idaho Falls, ID

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
Idaho Falls, ID

Average visibility - Idaho Falls, ID

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 and February (4mi).

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