Severe Thunderstorms for the Center of the Nation; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

A round of severe thunderstorms are forecast across areas of the Southern Plains, Mississippi Valley and Great Lakes this afternoon and tonight; The threat for flash flooding will also accompany these storms. The rainfall for the Great Lakes region could prolong the ongoing flooding. Where the rain is needed, the Southern High Plains, critical fire weather concerns through today. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.

Clear

43°F

6°C

Humidity 86%
Wind Speed N 0 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 18 Apr 02:35 AM PDT
Extended Forecast for

2 Miles NNW Napa CA

  • Overnight

    Overnight: Partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 76. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 71. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 71 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 11pm.  Mostly cloudy, with a low around 48. Southwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 48 °F

    Slight Chance
    Showers

  • Monday

    Monday: Showers likely, mainly after 11am.  Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 64 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm, then showers after 11pm.  Patchy fog after 2am. Low around 49. Chance of precipitation is 80%.

    Low: 49 °F

    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm.  Cloudy, with a high near 60.

    High: 60 °F

    Showers

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 11pm.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 46.

    Low: 46 °F

    Rain Likely
    and Patchy
    Fog

Detailed Forecast

Overnight
Partly cloudy, with a low around 43. Calm wind.
Saturday
Sunny, with a high near 76. Calm wind becoming south southwest around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 48. Calm wind.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 71. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Sunday Night
A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 48. Southwest wind 5 to 8 mph becoming calm in the evening.
Monday
Showers likely, mainly after 11am. Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Showers likely and possibly a thunderstorm, then showers after 11pm. Patchy fog after 2am. Low around 49. Chance of precipitation is 80%.
Tuesday
Showers and possibly a thunderstorm. Cloudy, with a high near 60.
Tuesday Night
Rain likely, mainly before 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 46.
Wednesday
A chance of rain. Patchy fog before 9am. Otherwise, partly sunny, with a high near 64.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 44.
Thursday
Patchy fog. Otherwise, mostly sunny, with a high near 69.
Thursday Night
Patchy fog. Otherwise, mostly clear, with a low around 43.
Friday
Patchy fog. Otherwise, sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Napa CA
 38.31°N 122.32°W (Elev. 98 ft)
1:41 am PDT Apr 18, 2026
2am PDT Apr 18, 2026-6pm PDT Apr 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database