Arizona · NWS PSR office

San Luis, AZ weather

It is 63°F and clear at Yuma, Marine Corps Air Station as of Oct 28, 4:57 AM MST. Overnight: Mostly Cloudy, low near 61°F. Forecast from the National Weather Service, issued Oct 28, 12:22 AM MST.

Updated Oct 28, 5:24 AM MST (snapshot)

Current conditions

Temperature

63°F

Clear

Wind

NNE 6 mph

Humidity 56% · dew point 47°F

Pressure · visibility

29.88 inHg

Visibility 10 mi

Observed at Yuma, Marine Corps Air Station (KNYL), Oct 28, 4:57 AM MST. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the San Luis forecast zone right now.

Around the NWS PSR forecast area

No active alerts in zones served by the PSR office near San Luis.

From the alert snapshot of Oct 28, 2026, 8:14 AM EDT. No alerts are active anywhere in Arizona.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for San Luis (local time)
TimeTempForecastPrecip. chanceWind
Wed 5 AM63°FMostly Cloudy0%ENE 5 mph
Wed 6 AM61°FPartly Sunny0%ENE 5 mph
Wed 7 AM61°FPartly Sunny0%ENE 5 mph
Wed 8 AM64°FMostly Sunny0%NE 5 mph
Wed 9 AM70°FMostly Sunny0%ENE 5 mph
Wed 10 AM75°FMostly Sunny0%E 5 mph
Wed 11 AM78°FPartly Sunny0%SE 10 mph
Wed 12 PM81°FMostly Sunny0%SSE 10 mph
Wed 1 PM83°FSunny0%SSE 10 mph
Wed 2 PM85°FSunny0%SSE 10 mph
Wed 3 PM85°FMostly Sunny0%SSE 10 mph
Wed 4 PM86°FMostly Sunny0%S 10 mph
Wed 5 PM84°FMostly Sunny0%S 10 mph
Wed 6 PM81°FMostly Cloudy0%S 10 mph
Wed 7 PM79°FMostly Cloudy0%SSW 5 mph
Wed 8 PM75°FMostly Cloudy0%SSW 5 mph
Wed 9 PM73°FMostly Cloudy0%SSW 5 mph
Wed 10 PM71°FPartly Cloudy0%SSE 5 mph
Wed 11 PM70°FPartly Cloudy0% 0 mph
Thu 12 AM68°FPartly Cloudy0%ESE 5 mph
Thu 1 AM67°FMostly Cloudy0%E 5 mph
Thu 2 AM66°FMostly Cloudy0%E 5 mph
Thu 3 AM65°FMostly Cloudy0%E 5 mph
Thu 4 AM64°FMostly Cloudy0%ENE 5 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in San Luis can differ.

7-day forecast

Overnight

Low 61°F

Mostly cloudy. Low around 61, with temperatures rising to around 63 overnight. East northeast wind around 5 mph.

Wednesday

High 86°F·Low 64°F

Mostly sunny. High near 86, with temperatures falling to around 84 in the afternoon. East southeast wind 5 to 10 mph, with gusts as high as 20 mph.

Wednesday Night: Mostly cloudy, with a low around 64. Southeast wind 0 to 10 mph.

Thursday

High 84°F·Low 65°F

Partly sunny, with a high near 84. East southeast wind 5 to 10 mph.

Thursday Night: Mostly cloudy, with a low around 65. Southeast wind 5 to 10 mph.

Friday

High 81°F·Low 63°F

Partly sunny, with a high near 81. West northwest wind 5 to 10 mph.

Friday Night: Partly cloudy, with a low around 63. Southeast wind around 5 mph.

Saturday

High 79°F·Low 64°F

A slight chance of rain showers after 5pm. Mostly cloudy, with a high near 79. Southeast wind around 5 mph. Chance of precipitation is 20%.

Saturday Night: A chance of rain showers. Cloudy, with a low around 64. South southwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

Sunday

High 76°F·Low 61°F

A chance of rain showers before 5pm. Partly sunny, with a high near 76. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

Sunday Night: Partly cloudy, with a low around 61. North northwest wind 5 to 15 mph, with gusts as high as 20 mph.

Monday

High 77°F·Low 58°F

Sunny, with a high near 77. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Monday Night: Mostly clear, with a low around 58. North northwest wind 5 to 10 mph.

Tuesday

High 78°F

Sunny, with a high near 78. North wind 5 to 10 mph.

Nearby cities

Larger cities in the area

Other cities in Yuma County

See every city we cover in Arizona, or check all active alerts.

About this forecast

Forecast office
San Luis is served by the National Weather Service PSR forecast office, forecast zone AZZ532, county zone AZC027.
Location used
The Census Bureau's internal point for San Luis (32.4857, -114.7219), in Yuma County. Population: 40,064 (2024 estimate), number 27 of the 32 Arizona cities on this site.
Radar
Nearest NWS radar: KYUX. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/32.4857,-114.7219 (forecast issued Oct 28, 12:22 AM MST).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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