Climate and monthly weather forecast
Rupert, ID

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The climate of Rupert

Rupert, Idaho, is classified as BSk under the Köppen climate classification, indicating a mid-latitude steppe climate. This climatic zone registers wide fluctuations in temperature throughout the year, with considerable variation in other weather parameters as well. Typical weather patterns for Rupert show moderate variations in temperature, humidity, daylight hours, sunlight hours, and precipitation. Relative humidity shows variation from a low of 30% in July and August to a high of 80% in January. This range distinctly portrays Rupert's fluctuating levels of humidity.

The town experiences a wide range of temperatures, from a low of 21.6°F (-5.8°C) in December to a high of 88.3°F (31.3°C) in July. Rainfall in Rupert is moderate, with October and November registering the highest rainfall at 1.34" (34mm) and 1.3" (33mm) respectively. Interestingly, the town experiences almost no rainfall in June, July and August, with the sparsest precipitation measuring just 0.28" (7mm) in July. During winter, from December to February, Rupert has considerable snowfall, with December receiving the most at 6.54" (166mm).

Winds show subtle fluctuation through the year, maintaining an average speed between 7.1mph (11.4km/h) in January and 9.8mph (15.8km/h) in April. Notably, gusty winds are usual, reaching peak speeds of up to 14.5mph (23.3km/h) in April. The town also sees varying hours of daylight that range from a low of 9.1 hours in December to a high of 15.3 hours in June.

The best time to visit Rupert

Under consideration of the weather parameters, the most favourable time to visit Rupert is from May to September. During this time, the temperature ranges from a comfortable 55.6°F (13.1°C) to a pleasant 76.6°F (24.8°C), with minimal rainfall. This period also registers the longest daylight hours, extending well over 13 hours a day. Moreover, the town revels in substantial sunshine hours, providing ample time for outdoor activities and exploration.

The worst time to visit Rupert

On the contrary, December through February is arguably the least preferable time to visit Rupert. The temperatures plummet to chilling lows between 21.6°F (-5.8°C) and 25.9°F (-3.4°C). These months also observe significant snowfall, rendering travel in the region challenging. The duration of daylight is markedly reduced during this period, limiting the feasibility of outdoor activities.

Spring weather in Rupert

Spring, transitioning from March to May, welcomes moderate weather in Rupert. Temperatures show an upward trend during this time, starting from 32.9°F (0.5°C) in March to reaching 66.6°F (19.2°C) by May. Concurrently, there's a notable decrease in snowfall days and a concomitant increase in sunshine hours.

Summer weather in Rupert

Rupert's summer, from June to August, is marked by warming temperatures that peak at 88.3°F (31.3°C) in July. The humidity drops to its lowest, offering dry and clear weather. Notably, this period sees negligible rainfall, ensuring uninterrupted exploration of Rupert's beauty.

Autumn weather in Rupert

In the autumn months, from September to November, Rupert witnesses a gradual drop in temperatures, moving from 76.1°F (24.5°C) in September to 45.5°F (7.5°C) in November. The rainfall begins to increase from 0.43" (11mm) in September to 0.83" (21mm) in November, and the weather takes on a wetter and cooler aspect.

Winter weather in Rupert

Winter, commencing in December through February, is dominated by cold conditions, with temperatures dropping to a sharp 21.6°F (-5.8°C) to 32.5°F (0.3°C). Remarkable snowfall, particularly in December with 6.54" (166mm), contributes to the icy effect typical of Rupert's winter climate. These conditions limit outdoor activities and make travel challenging.

Weather in January

The month of January greets Rupert, Idaho with its characteristic cold chills. Although seemingly relentless, this frosty climate does exhibit a sense of calm especially compared to the noticeably colder December, marked by average high and low temperatures of 33.4°F (0.8°C) and 22.1°F (-5.5°C) respectively. Weather in January »

Weather in February

With January's chill still hovering, February in Rupert anticipates a subtle but appreciated warm-up. The maximum wind gusts ramp up to 14.1mph (22.7km/h) in comparison to 12.6mph (20.3km/h) registered the month before. Lingering snow from January gradually gives way to a moderate drizzle, casting a misty blanket over the city. Weather in February »

Weather in March

Welcoming a palpable hint of spring, March offers respite from the long, bone-chilling winter with its discernible leap in temperatures. March records, not only a substantial rise in warmth with average high and low temperatures of 48°F (8.9°C) and 32.9°F (0.5°C), but also a significant decrease in snowfall to 3.7" (94mm) from the 4.37" (111mm) observed in February. Weather in March »

Weather in April

April in Rupert begins with a noticeable climb in temperatures, hinting at the much-anticipated arrival of summer. Warmer winds replace their frosty counterparts of March, coaxing blossoms into a vibrant bloom. Bright sunlight teases residents for longer durations while simultaneously banishing the lingering winter grey. Weather in April »

Weather in May

As we enter the midst of spring, May brings with it a fresh sense of vibrancy in Rupert. Home to the year's third highest UV index at 5, the sun graces the city longer, warming up the days. Idyllic conditions provide an excellent setting for outdoor activities while the cooler evenings keep the overall atmosphere pleasantly balanced. Weather in May »

Weather in June

June ushers in the beginning of summer in Rupert, with days growing longer and warmer. The city basks under the June sun, which shines for an average of 11.9 hours per day, the highest for the year. June's general atmosphere is balmy, encouraging escapades under the sun. Weather in June »

Weather in July

July checks in as the hottest month in Rupert, Idaho, exposing the city to the highest daytime temperatures of the year. The month records high and low temperatures averaging at 88.3°F (31.3°C) and 60.8°F (16°C), and the highest UV index of 7. Weather in July »

Weather in August

As the peak of summer in Rupert, August maintains July's warmth but introduces subtle hints of the imminent fall season. Slight reductions in temperature and daylight hours begin to signal the year's transition. Comparatively lower UV indexes and temperate winds offer reprieve from July's fierce sun. Weather in August »

Weather in September

September in Rupert indicates the onset of fall with a marked change in weather and color palette. A slight dip in temperature from August’s highs prepares the city for the colder months without dismissively snuffing out the lingering warmth of summer. Weather in September »

Weather in October

October offers refreshing autumnal coolness to the city of Rupert. The landscape transforms with the hues of the season touched by mellower sunshine. Contrasting with September's warmer aura, October's weather leans towards chilly without plunging into the brutally cold. Weather in October »

Weather in November

November, the last month of the autumn in Rupert, is chilly month, with an average temperature fluctuating between 30.7°F (-0.7°C) and 45.5°F (7.5°C). Rupert's average high-temperature decreases in November, falling from a refreshing 58.8°F (14.9°C) in October to a chilly 45.5°F (7.5°C). Weather in November »

Weather in December

The city of Rupert, Idaho sees the year off under the stronghold of winter in December. The sharp descent from November’s weather conditions is quite striking. Characterized by shorter days and the triumphant return of snowfall, December identifies as very much a winter month. Weather in December »
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Frequently asked questions

What is the most humid month in Rupert?

January is the most humid month in Rupert, Idaho, with an average relative humidity of 80%.

How much does it rain in Rupert?

Throughout the year, there are 105.2 rainfall days, and 10.63" (270mm) of precipitation is accumulated.

When does it snow in Rupert?

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

How much does it snow in Rupert?

Throughout the year, in Rupert, Idaho, there are 50.9 snowfall days, and 24.57" (624mm) of snow is accumulated.

What is the month with the least sunshine in Rupert?

January has the least sunshine of the year in Rupert, Idaho, with an average of 5.7h of sunshine.

What is the wettest month in Rupert?

March is the month with the most rainfall in Rupert, Idaho. Rain falls for 14 days and accumulates 1.46" (37mm) of precipitation.

When is Daylight Saving Time (DST) in Rupert?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Rupert, Idaho, 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 Rupert?

June through August are months without snowfall in Rupert, Idaho.

When are the longest days in Rupert?

The month with the longest days in Rupert, Idaho, is June, with an average of 15h and 18min of daylight.

What month is the hottest in Rupert?

In Rupert, the peak average temperatures are observed in July, with a high of 88.3°F (31.3°C) and a low of 60.8°F (16°C).

What are the least humid months in Rupert?

The months with the lowest humidity in Rupert, Idaho, are July and August, with an average relative humidity of 30%.

What is the driest month in Rupert?

The month with the least rainfall in Rupert, Idaho, is July, when the rain falls for 5.2 days and typically collects 0.28" (7mm) of precipitation.

What month has the most sunshine in Rupert?

July has the most sunshine of the year in Rupert, with an average of 12h of sunshine.

When is the highest UV index in Rupert?

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

What month is the coldest in Rupert?

The coldest month is December, with an average high-temperature of 32.5°F (0.3°C) and an average low-temperature of 21.6°F (-5.8°C).

What is the snowiest month in Rupert?

December is the month with the most snowfall in Rupert. Snow falls for 13 days and accumulates 6.54" (166mm) of snow.

What is the month with the shortest days in Rupert?

The month with the shortest days in Rupert is December, with an average of 9h and 6min of daylight.

When is the lowest UV index in Rupert?

The month with the lowest UV index in Rupert, Idaho, is December, with an average maximum UV index of 1.

Average temperature
Rupert, ID

Average temperature - Rupert, ID

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (32.5°F).

The months with the highest average low temperature are July and August (60.8°F).
The coldest month (with the lowest average low temperature) is December (21.6°F).

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Average pressure
Rupert, ID

Average pressure - Rupert, ID

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed
Rupert, ID

Average wind speed - Rupert, ID

The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is January (7.1mph).

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Average humidity
Rupert, ID

Average humidity - Rupert, ID

The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (30%).

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Average rainfall
Rupert, ID

Average rainfall - Rupert, ID

The wettest month (with the highest rainfall) is March (1.46").
The driest month (with the least rainfall) is July (0.28").

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Average rainfall days
Rupert, ID

Average rainfall days - Rupert, ID

The months with the highest number of rainy days are March and April (14 days).
The months with the least rainy days are July and August (5.2 days).

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Average snowfall
Rupert, ID

Average snowfall - Rupert, ID

The month with the highest snowfall is December (6.54").
The months with the least snowfall are June, July and August (0").

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Average snowfall days
Rupert, ID

Average snowfall days - Rupert, ID

The month with the highest number of snowfall days is December (13 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Rupert, ID

Average daylight / Average sunshine - Rupert, ID

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).

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Average sunshine days
Rupert, ID

Average sunshine days - Rupert, ID

The month with the most sunshine days is July (22.6 days).
The month with the least sunshine days is March (12 days).

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Average visibility
Rupert, ID

Average visibility - Rupert, ID

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

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Rupert, Idaho, USA

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