August weather forecast
Portales, NM

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Silhouette windmill images on a small hill in Portales in NM, below the colorful yellow, orange, and grey sunset sky
Silhouette windmill images on a small hill in Portales in NM, below the colorful yellow, orange, and grey sunset sky

Weather in August

In August, Portales, New Mexico extends its summer ambiance, as temperatures hover between 68.2°F (20.1°C) and 90.1°F (32.3°C). The city radiates life under the hot sun, with long summer days and warm, pleasant evenings. Despite the decrease in rainfall from the peak month of July, August is still marked by regular showers, maintaining a humid atmosphere. It's an ideal time to indulge in water-based activities while attempting to escape the intense summer heat. As the month progresses, the city anticipates the mild respite brought by the fall season.

Temperature

The average high-temperature is a still hot 90.1°F (32.3°C) in August, hardly different from the 90.5°F (32.5°C) recorded in July. Portales's nighttime average of 68.2°F (20.1°C) during August reflects a substantial decrease from the daytime temperature.

Heat index

The heat index in August is estimated at a hot 93.2°F (34°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

In August, the average relative humidity in Portales is 46%.

Rainfall

In August, in Portales, the rain falls for 12.5 days. Throughout August, 1.42" (36mm) of precipitation is accumulated. In Portales, during the entire year, the rain falls for 86.6 days and collects up to 11.77" (299mm) of precipitation.

Snowfall

May through September are months without snowfall in Portales, New Mexico.

Daylight

The average length of the day in August is 13h and 23min.
On the first day of the month, sunrise is at 6:05 am and sunset at 7:54 pm. On the last day of August, in Portales, sunrise is at 6:26 am and sunset at 7:20 pm MDT.

Sunshine

In August, the average sunshine is 11.8h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: An average maximum UV index of 7 in August leads to these recommendations:
Shield from overexposure. Defense against sun-related harm is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
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Frequently asked questions

How hot is it in Portales in August?

The average high-temperature and low-temperature in Portales during August are 90.1°F (32.3°C) and 68.2°F (20.1°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is estimated at 93.2°F (34°C).

What is the average humidity in August in Portales?

The average relative humidity in August is 46%.

How much does it rain in Portales in August?

In Portales, in August, it is raining for 12.5 days, with typically 1.42" (36mm) of accumulated precipitation.

When it does not snow in Portales?

In Portales, snow does not fall in May through September.

How many hours of daylight does Portales have in August?

The average day length in August is 13h and 23min.

When are sunrise and sunset in August in Portales?

In August, on the first day of the month, sunrise is at 6:05 am and sunset at 7:54 pm. On the last day of the month, in Portales, New Mexico, sunrise is at 6:26 am and sunset at 7:20 pm MDT.

How long on average sun shines in August in Portales?

In August, the average sunshine duration in Portales is 11.8h.

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

The months with the highest UV index in Portales, New Mexico, are June through August, with an average maximum UV index of 7.

What is the UV index intensity in August in Portales?

In Portales, the average daily maximum UV index in August is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Portales, NM

Average temperature in August - Portales, NM
  • Average high temperature in August: 90.1°F

The warmest month (with the highest average high temperature) is June (90.7°F).
The month with the lowest average high temperature is December (50°F).

  • Average low temperature in August: 68.2°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is December (31.1°F).

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Average pressure in August
Portales, NM

Average pressure in August - Portales, NM
  • Average pressure in August: 29.93"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in August
Portales, NM

Average wind speed in August - Portales, NM
  • Average wind speed in August: 9.9mph

The windiest month (with the highest average wind speed) is April (13.3mph).
The calmest month (with the lowest average wind speed) is August (9.9mph).

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Average humidity in August
Portales, NM

Average humidity in August - Portales, NM
  • Average humidity in August: 46%

The month with the highest relative humidity is December (54%).
The month with the lowest relative humidity is April (34%).

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Average rainfall in August
Portales, NM

Average rainfall in August - Portales, NM
  • Average rainfall in August: 1.42"

The wettest month (with the highest rainfall) is October (1.81").
The driest month (with the least rainfall) is November (0.28").

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Average rainfall days in August
Portales, NM

Average rainfall days in August - Portales, NM
  • Average rainfall days in August: 12.5 days

The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is November (2.6 days).

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Average snowfall in August
Portales, NM

Average snowfall in August - Portales, NM
  • Average snowfall in August: 0"

The months with the highest snowfall are January and February (1.34").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Portales, NM

Average snowfall days in August - Portales, NM
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (3.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Portales, NM

Average daylight in August / Average sunshine in August - Portales, NM
  • Average daylight in August: 13h and 2min

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).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 0min).

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Average sunshine days in August
Portales, NM

Average sunshine days in August - Portales, NM
  • Average sunshine days in August: 14 days

The month with the most sunshine days is January (26.4 days).
The month with the least sunshine days is August (14 days).

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Average UV index in August
Portales, NM

Average UV index in August - Portales, NM
  • Average UV index in August: 7

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in August
Portales, NM

Average cloud cover in August - Portales, NM
  • Average cloud cover in August: 15

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 13).

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Average visibility in August
Portales, NM

Average visibility in August - Portales, NM
  • Average visibility in August: 6mi

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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Portales, New Mexico, USA

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