Climate and monthly weather forecast
Preston, ID

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The climate of Preston

Preston, Idaho, USA, falls within Köppen climate classification, Dfb: Humid continental, no dry season, and warm summer. The dominating weather patterns present a myriad of seasonal adjustments. The city sees extreme changes in temperature throughout the year, with the high average temperature peaking at 84.4°F (29.1°C) in July and the low average temperature dropping down to 13.5°F (-10.3°C) in January.

There is a significant difference in rainfall during the year, with the lowest average of 0.35" (9mm) in July and the highest average of 2.24" (57mm) in February. Snowfall is mostly restricted to the colder months, starting at 16.73" (425mm) in January and declining to no snowfall from June to September. The months that have snowfall are often accompanied by quite a few days of snowfall, with 17.6 days of snowfall seen in January and 17.3 days in December.

Rainfall days and day length also vary widely throughout the year. The number of rainfall days tends to decrease from 16.6 days in April to 5.5 days in July, before increasing again. Daylight hours range from 9.2 hours in December to 15.2 hours in June. The city also experiences changes in cloud cover, which is highest at 51% in February and lowest at 10% in July and August.

The best time to visit Preston

The optimum time for a visit to Preston would be during the warm summer months from June to August. The average high temperature during this period ranges from 73.6°F (23.1°C) in June to 84.4°F (29.1°C) in July and 82.9°F (28.3°C) in August. Apart from the welcoming warmth, these months also exhibit the least amount of rain, averaging from 0.35" (9mm) to 1.26" (32mm) of rainfall. Additionally, the region enjoys the longest daylight hours, extending from 14.6 hours in May to 15.2 hours in June and 14.9 hours in July.

The worst time to visit Preston

Traveling to Preston during the winter months of December, January, and February could be challenging due to the harsh weather conditions. The average high temperatures during these months are on the lower side, from 28.8°F (-1.8°C) in December to a mere 29.1°F (-1.6°C) in January and slightly better 31.6°F (-0.2°C) in February. Furthermore, these months experience the highest levels of snowfall, reaching up to 16.73" (425mm) in January and 12.4" (315mm) in December, respectively.

Spring weather in Preston

Spring transforms the weather in Preston from the chilly, snowy conditions of winter to warmer and sunnier days. In March, the average high temperature is 41°F (5°C) and gradually increases to 49.8°F (9.9°C) and 61.2°F (16.2°C) in April and May. Concurrently, snowfall declines from 7.6" (193mm) in March, to 2.8" (71mm) in April, and to a negligible 0.39" (10mm) in May, signifying the retreat of winter. The city receives modest rainfall during spring, ranging from 2.09" (53mm) to 2.17" (55mm).

Summer weather in Preston

One finds summer in Preston to be warm, with an average high temperature peaking at 84.4°F (29.1°C) in July from 73.6°F (23.1°C) in June. Rainfall reduces dramatically in summer, reaching the annual low of 0.35" (9mm) in July from 1.26" (32mm) in June. Although daylight hours are longest in the summer, reaching its peak at 15.2 hours in June and gradually reducing to 13.8 hours by August, the city experiences the lowest cloud cover during the summer.

Autumn weather in Preston

Autumn brings a crisp chill to Preston, as the high temperatures drop from 72.5°F (22.5°C) in September through 54.7°F (12.6°C) in October and then to 41.2°F (5.1°C) in November. Rainfall increases slightly, touching 1.14" (29mm) in both September and October before reaching 1.26" (32mm) in November. The daylight hours decrease, while cloud cover increases progressively through these months.

Winter weather in Preston

Winters in Preston are marked by cold tempretures and heavy snowfall. The average high temperatures drop considerably from 41.2°F (5.1°C) in November to 28.8°F (-1.8°C) in December and 29.1°F (-1.6°C) in January. The city experiences the most substantial snowfall during these months, with December and January recording 12.4" (315mm) and 16.73" (425mm), respectively. The daylight hours are shorter, and clouds cover most of the sky in winter.

Weather in January

The beginning of the year in Preston, Idaho, is marked by a chilly, yet humid, weather pattern. A frequent visitor during this month is snowfall, with the city receiving around 16.73" (425mm) of snow across 17.6 days. The daytime temperatures, while on the cooler side, tend not to exceed 29.1°F (-1.6°C), making for brisk, yet manageable outdoor conditions. Weather in January »

Weather in February

As winter continues, weather conditions in February in Preston follow a pattern similar to January, albeit with some notable variances. The snowfall begins to decrease this month, although it is still very much a part of everyday living. Weather in February »

Weather in March

March ushers in the early hints of the spring season in Preston, Idaho as temperatures start to climb. Residents can expect milder daytime temperatures reaching up to around 41°F (5°C) as winter recedes. The warming trend is further emphasized by increased daylight hours, granting a welcome respite from the long winter evenings. Weather in March »

Weather in April

Moving into the fourth month, the weather in Preston, Idaho transforms considerably. Daytime temperatures continue their steady ascent, and this warmer trend coupled with a dip in humidity injects vibrancy into the crisp spring air. Weather in April »

Weather in May

May marks the advent of late spring and a noticeable shift in Preston's climate. This month experiences only 0.39" (10mm) of snowfall across a mere 0.6 days, signifying almost an end to the wintry remnants. As temperatures rise, the snow makes way for more rainfall, leading to lush green landscapes. Weather in May »

Weather in June

June in Preston, Idaho, rings in the summer with significantly higher temperatures and extended daylight hours. This month is relatively dry, characterized by decreased rainfall and humidity, introducing mid-year aridity. Long summer days allow ample sunlight, imbuing Preston with a hearty dose of robust vitality. Weather in June »

Weather in July

In the peak of summer, July sits as the warmest month in Preston, Idaho with temperatures escalating to about 84.4°F (29.1°C) at their highest. The city experiences the longest daylight hours, nearly 15 hours, accentuating its summer vibrancy. Weather in July »

Weather in August

August in Preston maintains similar weather patterns to July but begins the subtle shift towards autumn. Despite this, summer continues its reign with ample sunshine and negligible rainfall. Extended hours of sunlight still dominate the day, allowing plenty of opportunities for outdoor pursuits. Weather in August »

Weather in September

The transition from summer to fall comes about in September as temperatures begin to recede. This season welcomes a more balanced weather condition with the precipitation levels balancing out at approximately 1.14" (29mm) for the month. Weather in September »

Weather in October

The fall season in Preston, Idaho is in full swing during October. With shorter daylight hours and lowering temperatures, residents get the quintessential autumn experience. The city reenters a wetter phase, with regular bouts of rainfall becoming more frequent. Weather in October »

Weather in November

As autumn gives way to winter, November in Preston, Idaho manifests a stark change in weather conditions. With a significant dip in temperature, variable wind speeds rise to as high as 5.3mph (8.5km/h). The decrease in daylight hours is notably profound, setting in earlier evenings and later mornings. Weather in November »

Weather in December

Finally, December ushers in a full swing of winter in Preston, Idaho. Despite the cold, crisp weather and shorter daylight hours, a unique beauty resides in the town during this time. Snowfall becomes a regular feature alongside falling temperatures, layering the city in a blanket of white. Weather in December »
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the most humid month?

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

How much does it rain?

Throughout the year, there are 127.4 rainfall days, and 18.27" (464mm) of precipitation is accumulated.

When does it snow?

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

What is the snowiest month in Preston?

January is the month with the most snowfall. Snow falls for 17.6 days and accumulates 16.73" (425mm) of snow.

How much does it snow?

In Preston, during the entire year, snow falls for 83.8 days and aggregates up to 60.12" (1527mm) of snow.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 4.8h of sunshine.

When is the lowest UV index?

The months with the lowest UV index are January and December, with an average maximum UV index of 1.

What is the wettest month in Preston?

The month with the most rainfall is February, when the rain falls for 10.9 days and typically aggregates up to 2.24" (57mm) 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 Preston, snow does not fall in June through August.

When are the longest days?

With an average of 15h and 12min of daylight, June has the longest days of the year.

What are the warmest months?

July, with average temperatures reaching a high of 84.4°F (29.1°C) and a low of 53.8°F (12.1°C), is the warmest month.

What is the driest month?

July is the month with the least rainfall. Rain falls for 5.5 days and accumulates 0.35" (9mm) of precipitation.

What month has the most sunshine?

With an average of 12h of sunshine, July has the most sunshine of the year.

What is the month with the highest UV index?

With an average maximum UV index of 6, 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 38%.

What is the coldest time of year?

December is the coldest month, with an average high-temperature of 28.8°F (-1.8°C) and an average low-temperature of 14.9°F (-9.5°C).

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 12min of daylight.

Average temperature
Preston, ID

Average temperature - Preston, ID

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (28.8°F).

The month with the highest average low temperature is July (53.8°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).

Average pressure
Preston, ID

Average pressure - Preston, ID

The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed
Preston, ID

Average wind speed - Preston, ID

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).

Average humidity
Preston, ID

Average humidity - Preston, ID

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (38%).

Average rainfall
Preston, ID

Average rainfall - Preston, ID

The wettest month (with the highest rainfall) is February (2.24").
The driest month (with the least rainfall) is July (0.35").

Average rainfall days
Preston, ID

Average rainfall days - Preston, ID

The month with the highest number of rainy days is April (16.6 days).
The month with the least rainy days is July (5.5 days).

Average snowfall
Preston, ID

Average snowfall - Preston, ID

The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").

Average snowfall days
Preston, ID

Average snowfall days - Preston, ID

The months with the highest number of snowfall days are January and February (17.6 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine
Preston, ID

Average daylight / Average sunshine - Preston, ID

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

Average sunshine days
Preston, ID

Average sunshine days - Preston, ID

The month with the most sunshine days is July (21.8 days).
The month with the least sunshine days is February (8.3 days).

Average visibility
Preston, ID

Average visibility - Preston, ID

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).

Preston, Idaho, USA

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