California · NWS HNX office

Atwater, CA weather

It is 52°F and clear at Merced Regional Airport as of Oct 28, 2:05 AM PDT. Overnight: Mostly Clear, low near 46°F. Forecast from the National Weather Service, issued Oct 28, 1:56 AM PDT.

Updated Oct 28, 2:25 AM PDT (snapshot)

Current conditions

Temperature

52°F

Clear

Wind

Calm

Humidity 76% · dew point 45°F

Pressure · visibility

29.99 inHg

Visibility 10 mi

Observed at Merced Regional Airport (KMCE), Oct 28, 2:05 AM PDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Atwater forecast zone right now.

Around the NWS HNX forecast area

No active alerts in zones served by the HNX office near Atwater.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. California has 8 active alerts: see them all.

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 Atwater (local time)
TimeTempForecastPrecip. chanceWind
Wed 4 AM47°FMostly Clear0%NW 5 mph
Wed 5 AM46°FMostly Clear0%NW 5 mph
Wed 6 AM46°FMostly Sunny0%NW 5 mph
Wed 7 AM46°FMostly Sunny0%NW 5 mph
Wed 8 AM47°FMostly Sunny0%NW 5 mph
Wed 9 AM51°FMostly Sunny0%NW 5 mph
Wed 10 AM56°FSunny0%NW 5 mph
Wed 11 AM60°FSunny0%NW 5 mph
Wed 12 PM63°FSunny0%NW 5 mph
Wed 1 PM66°FSunny0%NW 5 mph
Wed 2 PM67°FSunny0%NW 5 mph
Wed 3 PM68°FSunny0%NW 5 mph
Wed 4 PM69°FSunny0%NW 5 mph
Wed 5 PM67°FPartly Sunny0%NW 5 mph
Wed 6 PM65°FMostly Cloudy0%NW 5 mph
Wed 7 PM61°FMostly Cloudy0%NW 5 mph
Wed 8 PM57°FMostly Cloudy0% 0 mph
Wed 9 PM54°FMostly Cloudy0% 0 mph
Wed 10 PM53°FMostly Cloudy0% 0 mph
Wed 11 PM52°FMostly Cloudy0% 0 mph
Thu 12 AM50°FMostly Cloudy0% 0 mph
Thu 1 AM50°FMostly Cloudy0% 0 mph
Thu 2 AM49°FMostly Cloudy0% 0 mph
Thu 3 AM48°FMostly Cloudy0% 0 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 Atwater can differ.

7-day forecast

Overnight

Low 46°F

Mostly clear, with a low around 46. Northwest wind around 5 mph.

Wednesday

High 70°F·Low 47°F

Sunny. High near 70, with temperatures falling to around 68 in the afternoon. Northwest wind 5 to 10 mph.

Wednesday Night: Mostly cloudy, with a low around 47. Northwest wind 0 to 5 mph.

Thursday

High 69°F·Low 49°F

Mostly cloudy, with a high near 69. South wind around 0 mph.

Thursday Night: Mostly cloudy, with a low around 49. Northwest wind around 0 mph.

Friday

High 70°F·Low 47°F

Mostly sunny, with a high near 70. West wind 0 to 5 mph.

Friday Night: Partly cloudy, with a low around 47. Northwest wind around 5 mph.

Saturday

High 66°F·Low 46°F

A chance of rain after 5pm. Mostly cloudy, with a high near 66. Northwest wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Saturday Night: A chance of rain before 4am. Mostly cloudy, with a low around 46. North northwest wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Sunday

High 66°F·Low 43°F

Sunny, with a high near 66. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.

Sunday Night: Mostly clear, with a low around 43. North northeast wind 0 to 10 mph, with gusts as high as 25 mph.

Monday

High 67°F·Low 46°F

Mostly sunny, with a high near 67. South southeast wind 0 to 5 mph.

Monday Night: Mostly cloudy, with a low around 46. North wind 0 to 5 mph.

Tuesday

High 70°F

A slight chance of rain after 4pm. Mostly sunny, with a high near 70. South southeast wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.

Nearby cities

Larger cities in the area

Other cities in Merced County

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

About this forecast

Forecast office
Atwater is served by the National Weather Service HNX forecast office, forecast zone CAZ302, county zone CAC047.
Location used
The Census Bureau's internal point for Atwater (37.3540, -120.5972), in Merced County. Population: 32,248 (2024 estimate), number 232 of the 296 California cities on this site.
Radar
Nearest NWS radar: KMUX. 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/37.354,-120.5972 (forecast issued Oct 28, 1:56 AM PDT).
  • 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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