Climate and monthly weather forecast
Alton, UT

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The climate of Alton

As per the Köppen climate classification, Alton, Utah resides in a Mediterranean, warm summer zone referred to as Csb. This geographical classification is underpinned by average temperature ranges that deviate from the chill of 17.6°F (-8°C) in January, soaring to a warmth of 77.9°F (25.5°C) come July. Changes in relative humidity paint a fluctuation march, from a damp 77% in January, giving way to relatively arid conditions at 29% in June.

Rainfall also sees a significant shift throughout the year with 1.42" (36mm) in January, dipping to 0.39" (10mm) in June before reaching a crescendo of 3.98" (101mm) in July. These weather alterations are compounded by variations in daylight duration, sliding synchronously from 9.9 hours in January to its zenith at 14.7 hours in June. A similar trend is replicated in sunshine hours, commencing with 5.8 hours in January and culminating at 11.7 hours in June.

Unique weather patterns emerge across Alton's weather tapestry. Snowfall, notably absent from May to September, peaks at 14.06" (357mm) in December. Similarly, a remarkable rise in rainfall is registered in July, paired with a significant drop in consecutive months. These intermittent changes and more punctuate the weather narrative of the year.

The best time to visit Alton

Peak conditions in Alton for potential visitors are during the late spring and early summer months, with May and June providing the most pleasant experiences. During this time, average high temperatures play around the mark of 60°F (15.6°C) to 74°F (23.3°C), providing warmth without being overly oppressive. The contrast in relative humidity, with a considerable drop to 42% in May and reaching its lowest point at 29% in June, offers dry conditions that blend well with the warmth.

The worst time to visit Alton

January in Alton may pose a challenging time for visitors. During this month, temperatures stoop down to an average low of 17.6°F (-8°C), coupled with high relative humidity peaking at 77% for the year. The combination of cold temperatures and high humidity might prove too harsh for some. Furthermore, snowfall is substantial in this period, averaging 11.06" (281mm) in the same month, which may impede travel plans and outdoor activities.

Spring weather in Alton

Spring weather in Alton brings an awakening of warmth as temperatures rise from an average high of 42.4°F (5.8°C) in March to a soothing 59.9°F (15.5°C) in May. The atmosphere becomes less humid, as relative humidity decreases from 65% in March to 42% in May. Correspondingly, hours of daylight lengthen from 12 hours in March to 14.2 hours in May, offering more opportunities for daytime exploration.

Summer weather in Alton

Alton's summer welcomes temperatures that provide warmth without the discomfort of extreme heat. High average temperatures commence in the 70s°F, beginning at 74.3°F (23.5°C) in June and remaining steady, with the warmest month, July, at 77.9°F (25.5°C). Humidity reaches its lowest point of 29% in June and gradually ascends throughout the summer months. The duration of daylight remains generous, from 14.7 hours in June to 13.6 hours in August, fostering favorable conditions for outdoor activities.

Autumn weather in Alton

Autumn in Alton manifests a gradual cooling down, with high temperatures falling from 68.9°F (20.5°C) in September to 43.9°F (6.6°C) in November. Meanwhile, the humidity remains relatively stable, hovering around the 50% mark throughout the season. As autumn progresses, the amount of sunshine hours gradually declines from 9.6 hours in September to 6.8 hours in November.

Winter weather in Alton

Winter in Alton presents a colder climate, with the temperature in December topping at 32.9°F (0.5°C) and averaging at a low of 17.2°F (-8.2°C). A significant escalation in relative humidity from 58% in November to 75% in January results in a damp, cold winter. Snowfall is the season's defining factor, absent from the previous season but commencing with an average of 14.06" (357mm) in December. Shorter days compound the winter impression, with daylight hours shrinking to 9.6 in December. In this period, Alton dons its white winter blanket.

Weather in January

January in Alton, Utah presents a chilly landscape, with residents experiencing the wintry vibes of the year's start. From a climatological viewpoint, the month is noted for it snowfall, accumulating up to 11.06" (281mm), making it the second most snowy month. Weather in January »

Weather in February

The second month of the year, February, perpetuates the winter tale of Alton, but intends some moderation. There is a small rise in overall temperatures compared to January, with the wintry feel persisting. From a climatological standpoint, February sets a record in terms of snowfall, recording 12.6" (320mm). Weather in February »

Weather in March

March carries the reminder of winter in Alton, yet foretells the advent of spring. The tight wintry clasp starts to unravel as temperatures slightly rise from February's lows. Speaking of meteorological extremes, March experiences an increase in rainfall, with a total of 1.81" (46mm). Weather in March »

Weather in April

As spring embellishes Alton in April, the weather truly begins to shift. The rise in temperatures from March becomes more evident this month, showcasing the beauty of spring. Figures indicate roughly 1.34" (34mm) of rainfall for April, which drops from the previous month. Weather in April »

Weather in May

May brings an evident warmth in Alton, confirming the consistent dominance of spring in this month. As it steps into the climatic scenario after April, May registers an increased daylight duration. Approximately 1.81" (46mm) of rainfall consolidate the replacing of the cold with a warmer, merrier atmosphere. Weather in May »

Weather in June

Summers officially herald themselves in Alton during June, completely merging the chilly past with the heated present. Compared to May, the rise in temperatures is most felt in June than any other transition in the year. The summer month records the lowest rainfall throughout the year, with just 0.39" (10mm). Weather in June »

Weather in July

July asserts itself as the heart of summer in Alton, Utah, inducing the residents in the rhythm of heated days and warm nights. The heat prevails from June, with the temperature at its peak. Meteorological records observe the highest amount of rainfall this month, tallying it up to 3.98" (101mm). Weather in July »

Weather in August

Riding through the last days of summer, August retains most of the heat from July in Alton. As per climatological data, the rainfall measures are slightly less than the previous month, amounting to 3.31" (84mm). The evenings bring some respite from the daytime heat, allowing people to enjoy outdoor dinners and gatherings. Weather in August »

Weather in September

As Alton steps into September, it begins to shrug off its summer attire and prepares for the gentler embraces of Fall. Following August, the recorded temperatures show a slight drop, and the meteorological data presents a rainfall of 1.73" (44mm). Weather in September »

Weather in October

October weaves autumn's magic over Alton, gifting its residents with picturesque landscapes and pleasant weather. Though the mercury levels descend from September, the warmth remains comfortably palpable. Climatological records indicate an average rainfall of 1.22" (31mm), lower than the past months. Weather in October »

Weather in November

November in Alton unfolds the preliminary chapters of winter, subtly hinting at the impending chill. Notably colder than October, the climate conditions register the onset of snowfall with 10.12" (257mm). Towards the end of this month, the city gears up to ring in the snow-filled festivities. Weather in November »

Weather in December

Alton in December is the epitome of a winter wonderland, where the city is elegantly veiled under the snow's white mantle. The climatological data shows a stark drop in temperatures from November. With the highest snowfall of 14.06" (357mm) in the year, December marks itself as the coldest month in Alton. Weather in December »
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Frequently asked questions

What is the most humid month in Alton?

January is the most humid month, with an average relative humidity of 77%.

How many days does it rain in Alton?

In Alton, Utah, during the entire year, the rain falls for 84.8 days and collects up to 22.05" (560mm) of precipitation.

When does it snow in Alton?

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

How much does it snow in Alton?

In Alton, during the entire year, snow falls for 66.4 days and aggregates up to 75.08" (1907mm) of snow.

What are the months with the least sunshine in Alton?

January and December, with an average of 5.8h of sunshine, are months with the least sunshine in Alton, Utah.

When is the lowest UV index in Alton?

The months with the lowest UV index in Alton, Utah, are January through March, November and December, with an average maximum UV index of 2.

When is Daylight Saving Time (DST) in Alton?

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.

What is the least humid month in Alton?

With an average relative humidity of 29%, June is the least humid month in Alton.

What is the driest month in Alton?

June is the month with the least rainfall. Rain falls for 4.6 days and accumulates 0.39" (10mm) of precipitation.

When it does not snow in Alton?

June through August are months without snowfall in Alton, Utah.

When are the longest days in Alton?

The month with the longest days is June, with an average of 14h and 42min of daylight.

What month has the most sunshine in Alton?

June has the most sunshine of the year in Alton, with an average of 11.7h of sunshine.

What are the months with the highest UV index in Alton?

The months with the highest UV index are June through August, with an average maximum UV index of 5.

What is the hottest time of year in Alton?

Alton's warmest weather arrives in July, when temperatures average a high of 77.9°F (25.5°C) and a low of 55.9°F (13.3°C).

What is the rainiest month in Alton?

July is the month with the most rainfall in Alton, Utah. Rain falls for 15.8 days and accumulates 3.98" (101mm) of precipitation.

What is the coldest month in Alton?

December, recording an average high temperature of 32.9°F (0.5°C) and a low temperature of 17.2°F (-8.2°C), is Alton's coldest month.

When does it snow the most in Alton?

December is the month with the most snowfall in Alton. Snow falls for 12.5 days and accumulates 14.06" (357mm) of snow.

What is the month with the shortest days in Alton?

December has the shortest days of the year in Alton, with an average of 9h and 36min of daylight.

Average temperature
Alton, UT

Average temperature - Alton, UT

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (32.9°F).

The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is December (17.2°F).

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Average pressure
Alton, UT

Average pressure - Alton, UT

The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed
Alton, UT

Average wind speed - Alton, UT

The windiest month (with the highest average wind speed) is April (9mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

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Average rainfall
Alton, UT

Average rainfall - Alton, UT

The wettest month (with the highest rainfall) is July (3.98").
The driest month (with the least rainfall) is June (0.39").

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Average rainfall days
Alton, UT

Average rainfall days - Alton, UT

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (2.8 days).

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Average snowfall
Alton, UT

Average snowfall - Alton, UT

The month with the highest snowfall is December (14.06").
The months with the least snowfall are June, July and August (0").

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Average snowfall days
Alton, UT

Average snowfall days - Alton, UT

The month with the highest number of snowfall days is December (12.5 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight / Average sunshine
Alton, UT

Average daylight / Average sunshine - Alton, UT

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

The month with the most sunshine is June (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).

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Average sunshine days
Alton, UT

Average sunshine days - Alton, UT

The month with the most sunshine days is June (23.4 days).
The month with the least sunshine days is July (13.3 days).

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Average UV index
Alton, UT

Average UV index - Alton, UT

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average visibility
Alton, UT

Average visibility - Alton, UT

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

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Alton, Utah, USA

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