How does NOAA issue severe storm watches for Napa?

The National Weather Service (NWS) monitors atmospheric instability across California. When convective storms, tornado potential, or flash floods are detected, automated NOAA advisories are immediately broadcasted.

What are the best outdoor weather hours in Napa today?

Check the 24-hour hourly trend chart above to identify windows of minimal rain probability, low UV index periods, and mild temperatures.

CA, USAZIP 94558Live NOAA Station

Napa, CA

Q: What is the current temperature and forecast in Napa, California?

The current weather in Napa is around 58°F. Forecast models from NOAA and high-resolution satellite imagery provide 10-day trends and real-time precipitation radars updated every 15 minutes.

Overcast•体感温度 58°F

74°F/54°F

3 mph 228°

88%湿度

58°F

National Weather Service High-Resolution Rapid Refresh (HRRR)

更新时间: 02:30 AM (America/Los_Angeles)

Daily Meteorological Briefing

Napa, CA

Synthesized forecast and practical day-planning insights

NOAA HRRR Stream

Expect mild and stable weather across Napa, CA today.

Current temperature is 58°F (feels like 58°F), with daytime highs reaching 74°F and overnight lows around 54°F. Humidity is at 88%, with atmospheric pressure steady at 1014.7 hPa.

Overall excellent conditions for commuting and outdoor routines.

Daily Range

Δ 11° Variation

Rain Likelihood

Low (< 10%)

Solar Exposure

UV 2.65 • Moderate

24-Hour Temperature & Rain Outlook

Hourly temperature progression and precipitation probability

Temp (°F) Rain (%)

逐小时预报

Next 16 Hours

Now

55°F

1 AM

54°F

2 AM

55°F

3 AM

55°F

4 AM

56°F

5 AM

55°F

6 AM

55°F

7 AM

55°F

8 AM

55°F

9 AM

57°F

10 AM

58°F

11 AM

60°F

12 PM

64°F

1 PM

68°F

2 PM

71°F

3 PM

73°F

10天天气预报

Extended 10-day meteorological outlook

10-Day Range

Today

Sep 22

54°F

74°F

Wed

Sep 23

55°F

87°F

Thu

Sep 24

57°F

83°F

Fri

Sep 25

55°F

83°F

Sat

Sep 26

52°F

70°F

Sun

Sep 27

50°F

76°F

Mon

Sep 28

51°F

80°F

Tue

Sep 29

53°F

85°F

Wed

Sep 30

52°F

78°F

Thu

Oct 1

52°F

76°F

Weather Details & Observations

Real-time atmospheric measurements and environmental indicators

Live Feed

紫外线指数Moderate

2.65 / 11+

Sunscreen advisedPeak 6.3

风向与风速228°

3 mph

Wind Gusts:7 mph

Conditions:Gentle breeze

Sun CycleDaylight

Sunrise06:57 AM

Sunset07:05 PM

Solar Noon:12:54 PM

湿度Humid

88%

露点:54°F

气压Steady

29.96 inHg

Trend:Stable (+0.1 hPa)

能见度Clear

7.6 mi

Haze:Minimal

Air Quality Index (AQI)Good

45US EPA Standard

Air quality is ideal for outdoor activities.

PM2.58 µg

OZONE41 µg

PM1011 µg

Daily Lifestyle & Activity Index

Practical recommendations tailored to current local conditions

Outdoor SportsGood

Pleasant conditions for light outdoor activities.

Car WashRecommended

Dry conditions will keep your vehicle clean.

Pollen & AllergyLow Risk

Pollen counts remain in the comfortable range.

Driving SafetyOptimal

Dry pavement and clear visibility throughout.

Sun & Moon • Celestial Dynamics

Solar orbital arc trajectory and lunar cycle visibility

Astronomy Telemetry

Solar Day TrackDaylight Arc

Sunrise11:57 PM

Daylight ~13h

Sunset12:05 PM

Lunar Phase & StargazingNight Sky

Waxing Gibbous

80% Illumination

Stargazing condition: Optimal Visibility

Next Full Moon in ~5 daysTidal Currents Normal

常见天气问答 - Napa, California

The current weather in Napa is around 58°F. Forecast models from NOAA and high-resolution satellite imagery provide 10-day trends and real-time precipitation radars updated every 15 minutes.

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