Weather forecast for todaySan Marcos, Peru

Weather forecast for today

Current condition 04:46 -05

  • 13°C
  • Feels like:
    13°C
Mostly Cloudy
Mostly Cloudy
  • Precipitation: 0mm
  • Wind: 5km/hNE 50°
  • Humidity: 91%
  • Dewpoint: 12°C
  • Pressure: 1014.56mbar
  • Visibility: 8.05km
  • UV index: 0
  • ▼
At the moment, in San Marcos, the sky is cloud-filled, with only small gaps of brightness.
The temperature is a mild 13°C. The current temperature is near the lowest anticipated 14°C for today.

Sunday 18. Oct 2026

  • 25°C
  • 14°C
Isolated Thunderstorms
Isolated Thunderstorms
  • Precip. probability: 31%
  • Precipitation: 3mm
  • Wind: 12km/hENE 78°
  • Humidity: 63%
  • UV index: 11
  • Sunrise: 05:49 -05
  • Sunset: 18:06 -05
  • ▼
Today, on Sunday, 18th of October, brief thunderstorms may pass through parts of the area.
Minimal precipitation is forecasted. Anticipated temperatures will peak at a temperate 25°C and dip to a minimum of a mild 14°C.
Today, the expected maximum will be uncommonly higher than the common October high of 15.5°C.
Sunrise will be at 05:49 and sunset at 18:06; the daylight will last for 12h and 17min.

Hourly overview

Hourly temperatures

Warmest hour: 13h 25°C.
Coldest hour: 5h 13°C.

Chance of precipitation

Highest chance: 21h - 23h 41%.

Hourly weather forecast

Sunrise: 05:49
  • 6h
  • 13°C
  • Feels like:
    13°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 4km/hNE 56°
  • Humidity: 91%
  • Pressure: 1015mbar
  • Visibility: 8km
  • UV index: 0
  • ▼
  • 8h
  • 17°C
  • Feels like:
    17°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0mm
  • Wind: 5km/hSE 126°
  • Humidity: 75%
  • Pressure: 1015mbar
  • Visibility: 16km
  • UV index: 3
  • ▼
  • 10h
  • 21°C
  • Feels like:
    21°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 9km/hSE 124°
  • Humidity: 56%
  • Pressure: 1013mbar
  • Visibility: 16km
  • UV index: 11
  • ▼
  • 12h
  • 24°C
  • Feels like:
    24°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0mm
  • Wind: 11km/hESE 106°
  • Humidity: 44%
  • Pressure: 1009mbar
  • Visibility: 16km
  • UV index: 11
  • ▼
  • 14h
  • 25°C
  • Feels like:
    25°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0mm
  • Wind: 12km/hENE 78°
  • Humidity: 42%
  • Pressure: 1006mbar
  • Visibility: 15km
  • UV index: 9
  • ▼
  • 16h
  • 24°C
  • Feels like:
    24°C
Isolated Thunderstorms
Isolated Thunderstorms
  • Precip. probability: 31%
  • Precipitation: 1mm
  • Wind: 10km/hNNW 345°
  • Humidity: 50%
  • Pressure: 1007mbar
  • Visibility: 14km
  • UV index: 2
  • ▼
  • 18h
  • 21°C
  • Feels like:
    21°C
Few Showers
Few Showers
  • Precip. probability: 31%
  • Precipitation: 1mm
  • Wind: 9km/hNW 325°
  • Humidity: 63%
  • Pressure: 1009mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunset: 18:06
  • 20h
  • 19°C
  • Feels like:
    19°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 23%
  • Precipitation: 0mm
  • Wind: 6km/hWSW 258°
  • Humidity: 74%
  • Pressure: 1012mbar
  • Visibility: 15km
  • UV index: 0
  • ▼
  • 22h
  • 17°C
  • Feels like:
    17°C
Showers
Showers
  • Precip. probability: 49%
  • Precipitation: 1mm
  • Wind: 4km/hESE 105°
  • Humidity: 83%
  • Pressure: 1014mbar
  • Visibility: 8km
  • UV index: 0
  • ▼
Today, in San Marcos, a combination of primarily cloudy and occasionally damp and turbulent weather is expected.
With minimal precipitation of 1mm, rainfall is predicted at 16h, 18h, and from 21h to 23h.
The temperature will be between the lowest temperature of 13°C and the highest temperature of 25°C. The warmest part of the day will be at 13h and 14h.
The high temperature is expected to be notably higher than the long-term average for October of 15.5°C. Today, the low temperature is forecast to be also notably higher than the monthly average of 7°C.
Updated: Oct 18, 2026 @ 09:46:23 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (04:46 -05) it is 13°C in San Marcos.

On Sunday, occasional rumbles of thunder may accompany passing rain showers.

Today, there is a low probability of minimal rainfall in San Marcos.

Today, the maximum temperature will be 25°C, while the minimum temperature will be 14°C.
Today, the maximum temperature will be uncommonly higher than the average highest temperature of 15.5°C in October. The lowest temperature will be also uncommonly higher than the average low of 7°C.

On Sunday, in San Marcos, sunrise will be at 05:49 and sunset at 18:06 (-05).

In San Marcos, today, there will be 12h and 17min of daylight.