National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rain in the Ohio and Tennessee Valleys; Watching for Tropical Cyclone Development in the Atlantic

Heavy to excessive rainfall may bring areas of flash and urban flooding over portions of the Ohio and Tennessee Valleys. Two tropical waves in the Atlantic are being monitored for tropical cyclone formation within the next few days. One tropical wave will bring periods of heavy rain, thunderstorms, flood risk, and landslides to Puerto Rico and the US Virgin Islands through Friday morning. Read More >

Current conditions at

UC MERCED WX STATION (UCMC1)

Lat: 37.36611°NLon: 120.4225°WElev: 252.0ft.

NA

29°C

84°F

Humidity 30%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 9°C (49°F)
Visibility NA
Heat Index28°C (82°F)
Last update 24 Sep 12:15 PM PDT
Extended Forecast for

3 Miles E Merced CA

  • This Afternoon

    This Afternoon: A 20 percent chance of rain. Mostly sunny, with a high near 31. Northwest wind 10 to 15 km/h, with gusts as high as 25 km/h.

    High: 31 °C

    Slight Chance
    Rain

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 19. West northwest wind 5 to 10 km/h. New rainfall amounts of less than 1 mm, except higher amounts possible in thunderstorms.

    Low: 19 °C

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 8am, then a chance of rain between 8am and 11am. Mostly sunny, with a high near 30. West northwest wind 5 to 15 km/h, with gusts as high as 25 km/h. Chance of precipitation is 30%.

    High: 30 °C

    Chance
    Showers then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 16. West northwest wind around 10 km/h.

    Low: 16 °C

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 31. West wind 5 to 10 km/h.

    High: 31 °C

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 18. West northwest wind 5 to 10 km/h becoming calm in the evening.

    Low: 18 °C

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 32. East wind 5 to 10 km/h becoming west southwest in the afternoon.

    High: 32 °C

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 16. West northwest wind 5 to 15 km/h.

    Low: 16 °C

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 28. West southwest wind 5 to 10 km/h.

    High: 28 °C

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of rain. Mostly sunny, with a high near 31. Northwest wind 10 to 15 km/h, with gusts as high as 25 km/h.
Tonight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 19. West northwest wind 5 to 10 km/h. New rainfall amounts of less than 1 mm, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms before 8am, then a chance of rain between 8am and 11am. Mostly sunny, with a high near 30. West northwest wind 5 to 15 km/h, with gusts as high as 25 km/h. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 16. West northwest wind around 10 km/h.
Friday
Sunny, with a high near 31. West wind 5 to 10 km/h.
Friday Night
Mostly clear, with a low around 18. West northwest wind 5 to 10 km/h becoming calm in the evening.
Saturday
Sunny, with a high near 32. East wind 5 to 10 km/h becoming west southwest in the afternoon.
Saturday Night
Partly cloudy, with a low around 16. West northwest wind 5 to 15 km/h.
Sunday
Sunny, with a high near 28. West southwest wind 5 to 10 km/h.
Sunday Night
Partly cloudy, with a low around 16. Northwest wind around 10 km/h.
Monday
A 20 percent chance of rain. Partly sunny, with a high near 27. Northwest wind around 10 km/h becoming west southwest in the afternoon.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 15. Northwest wind around 10 km/h.
Tuesday
A 40 percent chance of rain. Partly sunny, with a high near 25. Northwest wind around 10 km/h becoming south in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Merced CA
 37.29°N 120.4°W (Elev. 200 m)
Last Update:
12:57 pm PDT Sep 24, 2025
Forecast Valid:
1pm PDT Sep 24, 2025-6pm PDT Sep 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation