Climate and monthly weather forecast
New Plymouth, ID

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Weather in January

January, like December, in New Plymouth, Idaho, is another cold winter month, with an average temperature varying between 36.1°F (2.3°C) and 23.5°F (-4.7°C). January records an average high-temperature of a still wintry 36.1°F (2.3°C), indicating a minor variation from the preceding month. Weather in January »

Weather in February

The last month of the winter, February, is another cold month in New Plymouth, Idaho, with an average temperature varying between 41.7°F (5.4°C) and 29.1°F (-1.6°C). A slight uplift of average high-temperatures is noted in February, with temperatures adjusting from an icy 36.1°F (2.3°C) in January to a still cold 41.7°F (5.4°C). Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in New Plymouth, Idaho, with temperature in the range of an average high of 52.2°F (11.2°C) and an average low of 36.1°F (2.3°C). As March begins, there is an increase in the average high-temperature, moving from a wintry 41.7°F (5.4°C) in February to a cool 52.2°F (11.2°C). Weather in March »

Weather in April

April is an enjoyable spring month in New Plymouth, Idaho, with an average temperature fluctuating between 60.8°F (16°C) and 39.7°F (4.3°C). April brings a slight elevation in the average high-temperature, transitioning from March's cool 52.2°F (11.2°C) to a comfortable 60.8°F (16°C). Weather in April »

Weather in May

May, the last month of the spring in New Plymouth, is an agreeable month, with an average temperature varying between 46.6°F (8.1°C) and 70.7°F (21.5°C). As April gives way to May, the average high-temperature displays an increase, moving from an enjoyable 60.8°F (16°C) to an agreeable 70.7°F (21.5°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in New Plymouth, Idaho, with an average temperature varying between 53.2°F (11.8°C) and 79.2°F (26.2°C). In June, the average high-temperature marginally rises from an agreeable 70.7°F (21.5°C) in May to a warm 79.2°F (26.2°C). Weather in June »

Weather in July

July is a hot summer month in New Plymouth, Idaho, with an average temperature fluctuating between 91.6°F (33.1°C) and 60.8°F (16°C). New Plymouth's July weather, marked by an average high temperature of 91.6°F (33.1°C) and an average low temperature of 60.8°F (16°C), is the warmest in the year. Weather in July »

Weather in August

The last month of the summer, August, is another tropical month in New Plymouth, Idaho, with an average temperature varying between 90.5°F (32.5°C) and 61.3°F (16.3°C). August's weather displays an average high-temperature of a still tropical 90.5°F (32.5°C), slightly varied from July's 91.6°F (33.1°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in New Plymouth, Idaho, with an average temperature varying between 54.3°F (12.4°C) and 79.7°F (26.5°C). With the beginning of September, the average high-temperature shows a decrease, transitioning from a hot 90.5°F (32.5°C) in August to a moderately hot 79.7°F (26.5°C). Weather in September »

Weather in October

October, like September, in New Plymouth, Idaho, is another refreshing autumn month, with an average temperature ranging between max 62.1°F (16.7°C) and min 43.3°F (6.3°C). With the onset of October, New Plymouth experiences a noticeable temperature shift, with the average high-temperature receding from a moderately hot 79.7°F (26.5°C) in September to an enjoyable 62.1°F (16.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in New Plymouth, Idaho, with an average temperature fluctuating between 32.5°F (0.3°C) and 47.5°F (8.6°C). November signals a clear decrease in the average high-temperature, dropping from October's refreshing 62.1°F (16.7°C) to a frosty 47.5°F (8.6°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in New Plymouth, Idaho, with an average temperature fluctuating between 23.4°F (-4.8°C) and 35.8°F (2.1°C). December, noted for its average high-temperature of 35.8°F (2.1°C) and an average low-temperature of 23.4°F (-4.8°C), is considered the coldest month. Weather in December »
Updated: Aug 25, 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 82%.

How many days does it rain?

Throughout the year, there are 95.4 rainfall days, and 10.2" (259mm) of precipitation is accumulated.

When does it snow?

January through April, November and December are months with snowfall.

How much does it snow?

Throughout the year, there are 22.5 snowfall days, and 12.01" (305mm) of snow is accumulated.

When is the lowest UV index?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the wettest month?

The month with the most rainfall in New Plymouth is March, when the rain falls for 15.3 days and typically aggregates up to 1.61" (41mm) of precipitation.

When is Daylight Saving Time (DST)?

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.

When it does not snow?

In New Plymouth, snow does not fall in May through October.

When are the longest days?

The month with the longest days is June, with an average of 15h and 24min of daylight.

What is the hottest time of year?

New Plymouth's temperature records reveal July as the warmest month, marked by average highs of 91.6°F (33.1°C) and lows of 60.8°F (16°C).

What is the driest month?

July is the month with the least rainfall. Rain falls for 3.3 days and accumulates 0.12" (3mm) of precipitation.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 12.1h of sunshine.

What is the month with the highest UV index?

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

What is the least humid month?

The least humid month is August, with an average relative humidity of 30%.

What month is the coldest?

Temperature records mark December as the coldest month, with highs averaging 35.8°F (2.1°C) and lows at 23.4°F (-4.8°C).

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 7.5 days and typically aggregates up to 4.8" (122mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 0min of daylight.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 5.3h of sunshine.

Average temperature
New Plymouth, ID

Average temperature - New Plymouth, ID

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is December (35.8°F).

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (23.4°F).

Average pressure
New Plymouth, ID

Average pressure - New Plymouth, ID

The month with the highest atmospheric pressure is January (30.24"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).

Average wind speed
New Plymouth, ID

Average wind speed - New Plymouth, ID

The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is January (3.9mph).

Average humidity
New Plymouth, ID

Average humidity - New Plymouth, ID

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (30%).

Average rainfall
New Plymouth, ID

Average rainfall - New Plymouth, ID

The wettest month (with the highest rainfall) is March (1.61").
The driest month (with the least rainfall) is July (0.12").

Average rainfall days
New Plymouth, ID

Average rainfall days - New Plymouth, ID

The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (3.2 days).

Average snowfall
New Plymouth, ID

Average snowfall - New Plymouth, ID

The month with the highest snowfall is December (4.8").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
New Plymouth, ID

Average snowfall days - New Plymouth, ID

The month with the highest number of snowfall days is December (7.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
New Plymouth, ID

Average daylight / Average sunshine - New Plymouth, ID

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days
New Plymouth, ID

Average sunshine days - New Plymouth, ID

The month with the most sunshine days is July (25.6 days).
The month with the least sunshine days is March (13.8 days).

Average UV index
New Plymouth, ID

Average UV index - New Plymouth, ID

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average visibility
New Plymouth, ID

Average visibility - New Plymouth, ID

The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).

New Plymouth, Idaho, USA

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