Climate and monthly weather forecastIdaho Falls, ID

The climate of Idaho Falls

Positioned in the heart of the United States, Idaho Falls finds itself abiding by the semantic particulars of a BSk - mid-latitude steppe - according to the Köppen climate classification. This classification holds considerable sway over the seasonal disparities in weather elements. Thus, Idaho Falls experiences significant variations across different periods of the year.

Analyzing the weather parameters clearly projects a notable climate pattern. The temperatures oscillate from a high of 86.2°F (30.1°C) in July to a low of 14.2°F (-9.9°C) in January. Notably, both humidity and cloud cover are spread unevenly throughout the year, the highest being 90% and 51% respectively, in January, demonstrating the cold and cloudy disposition of the winter months. On the other hand, the regions of low humidity from 35%-36% neatly coincide with the low cloud cover 11% from July to August displaying a predominantly sunny climate during those months.

Rainfall exhibits a peculiar trend, with the maximum recorded precipitation of 0.83" (21mm) witnessed twice - from May to June and again in September. Similarly, the days bearing rainfall ranging from 10.7 and 8.1 emerge during the same months. Interestingly, the seasons with the least amount of rainfall surround these months from July to August, indicating a virtually unbroken sunny spell.

The best time to visit Idaho Falls

The ideal time to explore Idaho Falls is during the Summer months from June to August. The rationale for this choice lies in the favorable combination of weather parameters such as temperature, sunshine, rainfall, and cloud cover. The temperatures during this period fall between 75°F (23.9°C) and 86.2°F (30.1°C), crafting a warm, welcoming atmosphere. Concurrently, these months boast a consistent 11.7 to 11.8 sunshine hours and the cloud cover remains svelte at 11%.

Moreover, this period also coincides with the lowest rainfall of the entire year - 0.35" (9mm) in July. With an average of merely 6.6 rainfall days, visitors can anticipate largely dry and clear days. These factors, combined with the excessive daylight hours in the day - making up almost two thirds of the day - contribute to a visitor friendly environment.

The worst time to visit Idaho Falls

Contrastingly, the January winter period is met with adverse conditions, making it less than ideal for a visitation. With the temperature stooping to a minimum of 14.2°F (-9.9°C) and maintaining a maximum of just 28°F (-2.2°C), it becomes inhospitable for anyone unaccustomed to cold weather. Paralleling these circumstances, daylight hours plummet to 9. Rainfall isn't an area of concern during these months, however, the increase in snowfall to 3.86" (98mm) due to the low temperatures presents a challenging terrain.

Considering these factors, along with reduced visibility of 4 miles and high wind speeds of 10.4mph (16.7km/h), it becomes apparent that the conditions in January are not optimal for travel or tourism.

Spring weather in Idaho Falls

During the spring months, Idaho Falls sees temperatures that range from 43°F (6.1°C) to 64.4°F (18°C), with substantial volumes of daylight hours - 14.7 by May - warranting the pleasant weather conditions that are characteristic of this period. However, it is also a period of noticeable rainfall that goes beyond 0.59" (15mm) and extends up to 10.7 rainfall days in May.

Summer weather in Idaho Falls

Summer in Idaho Falls presents the warmest months of the year, espousing temperatures between 75°F (23.9°C) and 86.2°F (30.1°C). The summer months account for prolonged daylight and sunshine hours, reaching up to 15.4 hours and 11.8 hours respectively. The rainfall drops, with a minimum of 0.35" (9mm) present during July, ensuring near seamless sunny days.

Autumn weather in Idaho Falls

The autumn months see a gradual decrease in temperature from 73.6°F (23.1°C) in September to 41.2°F (5.1°C) in November. Daylight hours move from 12.5 to 9.7, reflecting the movement of the season. The beginning period sees a rise in rainfall, peaking at 0.83" (21mm) in September, however, undergoing a steady decrease up until November.

Winter weather in Idaho Falls

Winter is marked by low temperatures that go from 27.9°F (-2.3°C) to 14.2°F (-9.9°C) in January. The daylight hours tend to remain between 9 and 9.7. Rainfall sees a general dip while snowfall presents itself abundantly - reaching a towering 3.86" (98mm) in December. The weather conditions remain cold and severe throughout the winter period with increasing cloud cover.

Weather in January

The characteristically frigid air of Idaho Falls in January seems to hold the city in a deep freeze. Residents routinely awaken to brisk temperatures that can plunge to a biting 14.2°F (-9.9°C), making it the coldest month of the year. Weather in January »

Weather in February

February brings to Idaho Falls a certain break from the harsh cold of January, although still maintaining a wintry chill. The county experiences an increment, albeit small, in temperature. This upswing in temperature doesn't mean that winter is over, instead, residents continue to contend with substantial snowfall. Weather in February »

Weather in March

As residents anxiously anticipate the arrival of spring, March's weather in Idaho Falls becomes less severe, yet retains some winter vestiges. The shift is marked by a significantly milder climate; and there is also a notable increase in brightness as the length of the day starts to extend. Weather in March »

Weather in April

With April's arrival, the strong grip of winter significantly loosens in Idaho Falls. The landscape begins to significantly shift from white to green as snow gives way to rain showers. The vibrant sun stays out longer, a welcome change for residents who've weathered months of wintry gloom. Weather in April »

Weather in May

May marks the full onset of spring in Idaho Falls, providing a much-needed break from the long winter spell. The city comes alive with temperate weather and increased hours of daylight enhancing outdoor activities. Nevertheless, the rainfall peaks during this month, lending credence to the adage, "April showers bring May flowers." While the majority of precipitation falls as rain, occasional surprise snowfall maintains the unpredictability of the weather. Weather in May »

Weather in June

The anticipation of summer becomes a reality in June in Idaho Falls. Warm days become the norm, and snowfall officially becomes non-existent. People begin to take full advantage of the longest daylight hours of the year and the relatively dry weather conditions. Weather in June »

Weather in July

July in Idaho Falls embraces the full swing of the summer season, radiating with temperatures soaring to a sizzling 86.2°F (30.1°C). Unsurprisingly, this makes July the hottest month of the year. Sun-soaked days and extended daylight hours promote enjoyment of the outdoors. Weather in July »

Weather in August

August’s weather in Idaho Falls witness a slight drop in temperature from July, marking the beginning of the slow retreat of summer heat. The warmth, however, is still considerable, and combined with relatively low precipitation, conditions remain ideal for outdoor endeavors. Weather in August »

Weather in September

September brings early signs of autumn to Idaho Falls, imbuing the city with an entirely new atmosphere. The climate starts to cool, and humidity levels rise, setting a dramatic background for the colorful fall foliage. Conversely, a rare fall thunderstorm should not be ruled out owing to a rise in rainfall. Weather in September »

Weather in October

Idaho Falls in October has a distinctive chill in the air indicating the onset of winter. Although much warmer than winter months, locals start to feel the cold creeping in, notably during early mornings and late evenings. An increase in cloud cover is evident, providing the backdrop for a picturesque fall landscape. Weather in October »

Weather in November

November in Idaho Falls marks the beginning of the icy winter season, with sharp dips in temperature causing residents to bundle up. The month sees a shift from rain to snow, indicating a transition from fall to winter. Daylight hours shrink noticeably, and the city often wakes up to a picturesque frosty morning. Weather in November »

Weather in December

December brings the year to a close with peak winter conditions in Idaho Falls. Temperatures continue their downward trajectory from November, keeping the city shrouded in a cold spell. Maximum snowfall days coupled with fewest daylight and sunshine hours contribute to the overall wintery atmosphere. Weather in December »