Lewiston Metro Area, ID Climate

The climate in the Lewiston, ID Metro Area is generally warm and temperate. Summer months are usually very hot with temperatures ranging from the mid-80s to low 90s, while winters can be cold and snowy. Rainfall is abundant throughout the year, averaging around 17 inches annually. Winters tend to be cold and wet, making snow accumulation a common occurrence typically beginning in November and lasting until late March. Summers can also bring thunderstorms that provide much needed relief from the dry heat of the day.

Lewiston Metro Area, Idaho gets 18 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Lewiston Metro Area averages 17 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 200 sunny days per year in Lewiston Metro Area. The US average is 205 sunny days.

Lewiston Metro Area gets some kind of precipitation, on average, 110 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 87 degrees
Winter Low: the January low is 27
Rain: averages 18 inches of rain a year
Snow: averages 17 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the Lewiston metro area is 7.1 (10=best), which means it is more comfortable than most places in Idaho.

8.8 Summer - 5 Winter

June, September and July are the most pleasant months in the Lewiston metro area, while December and January are the least comfortable months.

Climate	Lewiston, Idaho	United States
	17.6 in.	38.1 in.
	16.6 in.	27.8 in.
	109.8 days	106.2 days
	200 days	205 days
	87.4°	85.8°
	26.9°	21.7°
	7.1	7
	3.2	4.3
	2660 ft.	2443 ft.

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

August is the hottest month for the Lewiston metro area with an average high temperature of 87.5°, which ranks it as warmer than most places in Idaho. In the Lewiston metro area, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the Lewiston metro area are September, June and May.

In the Lewiston metro area, there are 34.3 days annually when the high temperature is over 90°, which is hotter than most places in Idaho.

December has the coldest nighttime temperatures for the Lewiston metro area with an average of 25.6°. This is one of the warmest places in Idaho.

In the Lewiston metro area, there are 106.6 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Idaho.

In the Lewiston metro area, there are 1.5 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Idaho.

Humidity is low in the Lewiston metro area, and some people might find the dryness to be uncomfortable. Days with noticeable humidity are rare throughout the year. A very dry climate can lead to cracked, itchy skin and dry eyes.

November is the wettest month in the Lewiston metro area with 2.0 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Summer with 31% of yearly precipitation and 18% occurs in Autumn, which is the driest season. The annual rainfall of 17.6 inches in the Lewiston metro area means that it is about average compared to other places in Idaho.

November is the rainiest month in the Lewiston metro area with 12.6 days of rain, and August is the driest month with only 4.3 rainy days. There are 109.8 rainy days annually in the Lewiston metro area, which is rainier than most places in Idaho. The rainiest season is Summer when it rains 30% of the time and the driest is Autumn with only a 16% chance of a rainy day.

An annual snowfall of 16.6 inches in the Lewiston metro area means that it is less snowy than most places in Idaho. December is the snowiest month in the Lewiston metro area with 5.4 inches of snow, and 5 months of the year have significant snowfall.

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