Climate and monthly weather forecast
Altus, OK

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The climate of Altus

Altus, Oklahoma, USA enjoys a Humid Subtropical climate with no dry season, as classified by the Köppen Climate Classification as Cfa. The geographical position of the city, nestled in the southwestern corner of the state, influences the various weather elements observed year-round.

On examining climatological data, temperatures fluctuate from an average low of 33.4°F (0.8°C) in the coldest months to an average high of 96.4°F (35.8°C) in the summer months. Humidity stays relatively constant, fluctuating only lightly between 49% to 60%, thus maintaining an acceptable comfort level throughout the course of the year. The rainfall varies with each passing month, peaking at 3.35" (85mm) in May. Yet, there is no month devoid of rainfall, with even the driest month receiving 0.75" (19mm).

A unique weather feature in Altus is the relatively short winter with modest snowfall. With snowfall days not exceeding 2.4 in any month and total accumulation not exceeding 0.98" (25mm), it is evident the winter season is mild. Furthermore, the most significant wind development occurs from March until May, when winds reach average speeds of up to 12.4mph (20km/h).

The best time to visit Altus

The optimal period for visiting Altus would be in the tranquil transition periods of spring and fall when temperatures are not extreme and weather conditions are mostly benign. April to June is a particularly agreeable period presented with moderate temperatures varying between 45.7°F (7.6°C) to 73.9°F (23.3°C), respectable hours of daylight from 12 to 14.5 hours, and slight increase in precipitation.

The worst time to visit Altus

The unfavorable time to venture toward Altus would be the peak of summer, specifically July and August. This period endures the highest temperatures, reaching up to 96.4°F (35.8°C). Coupled with 76.3°F (24.6°C) lowest temperatures, these months can become quite intense for outdoor activities.

Spring weather in Altus

Spring in Altus extends from March to May, with temperatures steadily rising from 45.7°F (7.6°C) to 82.6°F (28.1°C). March still retains some of the winter chill but rapidly transitions to milder conditions as the season progresses. From a minimal 0.04" (1mm) of snowfall in March to complete disappearance of snow in April and May, Spring is a season of pleasant and congenial weather characteristics.

Summer weather in Altus

Summer in Altus, spanning June through August, is the hottest season. Temperatures soar to a zenith of 96.4°F (35.8°C), while the lows remain comfortably high at 74.8°F (23.8°C) in August. Rainfall is a constant companion during these months, but it fails to offset the intense heat effectively.

Autumn weather in Altus

Autumn in Altus, from September to November, brings moderation after the soaring summer temperatures. Daytime temperatures gradually decrease from 86.7°F (30.4°C) to a more tolerable 62.1°F (16.7°C), offering a splendid respite from the previous season's heatwave. Rainfall and humidity during this period remain constant and mild.

Winter weather in Altus

Winter extends from December until February in Altus. The season witnesses the year's coldest temperatures, falling to as low as 33.4°F (0.8°C). As the year ends, the amount and duration of daylight diminish to a minimum of 9.9 hours in December. Despite the cold progression, the city only registers a minimal snowfall, making it a tolerably cold winter compared to other regions.

Weather in January

January in Altus, Oklahoma sees an interesting mix of winter weather conditions. Cold and crisp temperatures are on display, with a high seldom going beyond the 52.3°F (11.3°C) mark, and lows getting quite frosty at 33.4°F (0.8°C). Weather in January »

Weather in February

February signals a transition period where winter starts to loosen its icy grip. The temperatures observe a small dip compared to January, with a high of 55°F (12.8°C) and a noticeable low of 35.8°F (2.1°C). Clear, dry winds sweep across Altus most of the time, accompanied by clear skies and abundant sunshine. Weather in February »

Weather in March

March brings a perceptible shift in the weather patterns of Altus. While the temperature always fluctuates, notably it rises from the lows in February 35.8°F (2.1°C) to highs of 66.7°F (19.3°C). The air holds the fresh, crisp scent of blooming flowers and the onset of Spring, with a definite increase in daylight hours. Weather in March »

Weather in April

April showers are not a myth for the residents of Altus. The city sees a major increase in rainfall, with the April showers bringing May flowers. The temperatures also shoot up, ushering in bright, sunny days. The city is seen drenched in sunlight for longer hours, making for excellent exploring conditions. Weather in April »

Weather in May

With May comes the early signs of summer in Altus. The temperature difference is palpable, reaching a high of 82.6°F (28.1°C) from the moderate April weather, heralding the arrival of summer. Longer daylight hours and decreased precipitation herald more opportunities for outdoor activities. Weather in May »

Weather in June

June is when the summer weather truly comes into full force in Altus. The mercury occasionally hits the uncomfortable 93.6°F (34.2°C) mark, signaling the heart of summertime. The glorious sun blazes down upon the town for most part of the day. Weather in June »

Weather in July

July represents the apex of summer in Altus, with temperatures skyrocketing to a fiery 96.4°F (35.8°C) during the hottest periods. July days are often sweltering, cloudless, and bring minimal precipitation. The azure skies stretch endlessly, interrupted only by the sparse clouds. Weather in July »

Weather in August

With the arrival of August, Altus experiences the waning days of summer heat. The temperatures fluctuate, but can still reach a stifling high of 95.7°F (35.4°C). Cloudless skies provide relentless sunshine and the city appears bathed in gold. Weather in August »

Weather in September

The weather slightly eases off in Altus come September, with a high of 86.7°F (30.4°C). Signals of autumn's arrival become more apparent, as the lush greenery begins to transition into a myriad of warm colors. Reminiscent of the heat of summer, the afternoon sun still manages to warm the day quite generously. Weather in September »

Weather in October

Altus welcomes October, often considered the town's charm, with more significant drops in temperature. With the arrival of fall, the oscillation between daytime heat and nighttime cold becomes more pronounced. Trees donning their fall colors stand out against the soft sunlit backdrop during daytime. Weather in October »

Weather in November

November marks the time when Altus begins to feel the stirrings of winter. The mercury continues to drop, fluctuating from the October high of 73.6°F (23.1°C) to 62.1°F (16.7°C). The fall foliage is now at its peak, with the town painted in the splendid colors of autumn. Weather in November »

Weather in December

Altus welcomes December with colder temperatures, a high averaging at 51.6°F (10.9°C) and the return of the winter season. December days are short and filled with biting winds that sweep across the town. The festive season can be felt in the air, adding to the charm of the city. Weather in December »
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Frequently asked questions

How many days does it rain in Altus?

In Altus, Oklahoma, during the entire year, the rain falls for 104.5 days and collects up to 20.59" (523mm) of precipitation.

When does it snow in Altus?

Months with snowfall are January through April, November and December.

How much does it snow in Altus?

In Altus, during the entire year, snow falls for 5.8 days and aggregates up to 2.83" (72mm) of snow.

What is the driest month in Altus?

February and November are months with the least rain in Altus, Oklahoma, when the rain falls for 5.7 days and typically aggregates up to 0.75" (19mm) of rain.

When does it snow the most in Altus?

February is the month with the most snowfall in Altus. Snow falls for 2.4 days and accumulates 0.98" (25mm) of snow.

When is Daylight Saving Time (DST) in Altus?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Altus, Oklahoma, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

What are the most humid months in Altus?

The months with the highest humidity are May and December, with an average relative humidity of 60%.

What is the rainiest month in Altus?

May is the month with the most rainfall. Rain falls for 13.2 days and accumulates 3.35" (85mm) of precipitation.

When it does not snow in Altus?

In Altus, Oklahoma, snow does not fall in May through October.

When is the highest UV index in Altus?

The months with the highest UV index are May through August, with an average maximum UV index of 7.

When are the longest days in Altus?

With an average of 14h and 24min of daylight, June has the longest days of the year.

What month has the most sunshine in Altus?

With an average of 11.5h of sunshine, June has the most sunshine of the year in Altus.

What are the warmest months in Altus?

Temperature readings reach their annual highs in July, averaging 96.4°F (35.8°C) and a minimum average of 76.3°F (24.6°C).

What is the least humid month in Altus?

August is the least humid month in Altus, Oklahoma, with an average relative humidity of 49%.

What is the coldest month in Altus?

Altus, Oklahoma, reaches its average lowest temperatures in December, measuring 51.6°F (10.9°C) at the peak and 34.5°F (1.4°C) at the lowest.

What is the month with the shortest days in Altus?

December has the shortest days of the year in Altus, Oklahoma, with an average of 9h and 54min of daylight.

What is the month with the least sunshine in Altus?

December has the least sunshine of the year, with an average of 6.5h of sunshine.

What is the month with the lowest UV index in Altus?

December is the month with the lowest UV index, with an average maximum UV index of 2.

Average temperature
Altus, OK

Average temperature - Altus, OK

The warmest month (with the highest average high temperature) is July (96.4°F).
The month with the lowest average high temperature is December (51.6°F).

The month with the highest average low temperature is July (76.3°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

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Average pressure
Altus, OK

Average pressure - Altus, OK

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed
Altus, OK

Average wind speed - Altus, OK

The windiest month (with the highest average wind speed) is April (12.4mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).

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Average humidity
Altus, OK

Average humidity - Altus, OK

The months with the highest relative humidity are May and December (60%).
The month with the lowest relative humidity is August (49%).

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Average rainfall
Altus, OK

Average rainfall - Altus, OK

The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are February and November (0.75").

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Average rainfall days
Altus, OK

Average rainfall days - Altus, OK

The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is January (3.8 days).

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Average snowfall
Altus, OK

Average snowfall - Altus, OK

The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Altus, OK

Average snowfall days - Altus, OK

The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Altus, OK

Average daylight / Average sunshine - Altus, OK

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days
Altus, OK

Average sunshine days - Altus, OK

The month with the most sunshine days is January (25.9 days).
The month with the least sunshine days is August (15.1 days).

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Average visibility
Altus, OK

Average visibility - Altus, OK

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

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Altus, Oklahoma, USA

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