Weather forecast for todayTacna, AZ

Weather forecast for today

Current condition 5:33 am MST

  • 75°F
  • Feels like:
    75°F
Partly Cloudy
Partly Cloudy
  • Precipitation: 0"
  • Wind: 5mphE 100°
  • Humidity: 65%
  • Dewpoint: 63°F
  • Pressure: 29.82"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Currently, in Tacna, the weather is partly cloudy with occasional clear patches.
The temperature is a moderately hot 75.2°F. The current temperature is near the lowest anticipated 71.6°F for today.

Wednesday Oct 21, 2026

  • 91°F
  • 72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 16mphSE 131°
  • Humidity: 52%
  • UV index: 5
  • Sunrise: 6:44 am MST
  • Sunset: 5:56 pm MST
  • ▼
On Wednesday, October 21, sunny moments will alternate with patchy cloud cover.
Temperature is expected to swing from a high of a humid 91.4°F to a low of a delightful 71.6°F.
The maximum heat index, which adjusts the air temperature based on humidity, is estimated at a sizzling 98.6°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
The forecasted temperature is relatively higher than October's regular maximum of 86.9°F.
Sunrise will be at 6:44 am and sunset at 5:56 pm; the daylight will last for 11h and 11min.

Hourly overview

Hourly temperatures

Warmest period: 2 pm - 4 pm 91°C.
Coldest period: 6 am - 8 am 75°C.

Chance of precipitation

Highest chance: 10 am 9%.

Hourly weather forecast

  • 6 am
  • 75°F
  • Feels like:
    75°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphE 81°
  • Humidity: 65%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 6:44 am
  • 8 am
  • 75°F
  • Feels like:
    75°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 6mphENE 78°
  • Humidity: 67%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 81°F
  • Feels like:
    84°F
Cloudy
Cloudy
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 9mphE 88°
  • Humidity: 57%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 86°F
  • Feels like:
    88°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 11mphSE 134°
  • Humidity: 46%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 2 pm
  • 90°F
  • Feels like:
    91°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 14mphS 173°
  • Humidity: 41%
  • Pressure: 29.77"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 90°F
  • Feels like:
    91°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 15mphS 179°
  • Humidity: 40%
  • Pressure: 29.74"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
Sunset: 5:56 pm
  • 6 pm
  • 86°F
  • Feels like:
    88°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphS 172°
  • Humidity: 42%
  • Pressure: 29.77"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 81°F
  • Feels like:
    82°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSE 143°
  • Humidity: 53%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 79°F
  • Feels like:
    81°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphSE 126°
  • Humidity: 57%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Tacna, cloudy skies are expected.
The temperature will be between a minimum of 75.2°F and a maximum of 89.6°F. The hottest part of the day will be from 2 pm to 4 pm.
The high will be slightly warmer than the normal maximum of 86.9°F for October. The lowest temperature is also in line with October's typical minimum of 69.1°F.
Updated: Oct 21, 2026 @ 12:33:38 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (5:33 am MST) it is 75.2°F in Tacna.

Today, occasional clouds will pass by, but expect bright spells.

Today, the highest temperature will be 91.4°F, while the lowest temperature will be 71.6°F. The maximum heat index, which indicates how humid air affects the felt temperature, is assessed at 98.6°F.
The highest temperature will be slightly warmer than the average maximum of 86.9°F in October. The lowest temperature will be in line with the average low of 69.1°F.

On Wednesday, in Tacna, sunrise will be at 6:44 am and sunset at 5:56 pm (MST).

In Tacna, the length of the day today will be 11h and 11min.