What is the weather in Newcastle right now?

Current weather in Newcastle is overcast clouds.

Where can I find the hourly weather forecast for Newcastle?

This page shows hourly weather forecast for Newcastle, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Newcastle updated regularly?

Weather data for Newcastle is updated regularly with the latest available observations and forecasts.

Now · 7:29 AM

Newcastle Weather & Hourly Forecast

United States · California · 95658

66°F

Overcast

Feels like: 62°F

💧 Humidity 52% 🌡 Pressure 30.03 inHg 💨 Wind 6 mph 👁 Visibility 19.0 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Newcastle

Today

8:00 AM

Overcast

70° 💧 None 💨 6 mph H 48%30.03 inHg

11:00 AM

Overcast

88° 💧 None 💨 5 mph H 27%30.06 inHg

2:00 PM

Overcast

93° 💧 None 💨 7 mph H 20%30.00 inHg

5:00 PM

Overcast

94° 💧 None 💨 5 mph H 18%29.94 inHg

8:00 PM

Overcast night

84° 💧 None 💨 1 mph H 30%29.94 inHg

11:00 PM

Clear night

72° 💧 None 💨 6 mph H 48%29.97 inHg

Tomorrow

2:00 AM

Clear night

71° 💧 None 💨 7 mph H 48%29.94 inHg

5:00 AM

Clear night

71° 💧 None 💨 8 mph H 47%29.94 inHg

8:00 AM

Sunny

76° 💧 None 💨 6 mph H 40%29.94 inHg

11:00 AM

Sunny

91° 💧 None 💨 5 mph H 20%29.94 inHg

2:00 PM

Mostly sunny

97° 💧 None 💨 7 mph H 17%29.88 inHg

5:00 PM

Mostly sunny

97° 💧 None 💨 7 mph H 17%29.83 inHg

8:00 PM

Clear night

85° 💧 None 💨 8 mph H 24%29.83 inHg

11:00 PM

Clear night

77° 💧 None 💨 9 mph H 30%29.88 inHg

Friday

2:00 AM

Clear night

73° 💧 None 💨 10 mph H 34%29.88 inHg

5:00 AM

Clear night

69° 💧 None 💨 9 mph H 38%29.85 inHg

Today

8:00 AM

Overcast

70° 💧 None 💨 6 mph H 48%30.03 inHg

9:00 AM

Mostly cloudy

79° 💧 None 💨 3 mph H 41%30.03 inHg

10:00 AM

Mostly cloudy

86° 💧 None 💨 2 mph H 29%30.03 inHg

11:00 AM

Overcast

88° 💧 None 💨 5 mph H 27%30.06 inHg

12:00 PM

Overcast

89° 💧 None 💨 6 mph H 26%30.03 inHg

1:00 PM

Overcast

91° 💧 None 💨 7 mph H 23%30.03 inHg

2:00 PM

Overcast

93° 💧 None 💨 7 mph H 20%30.00 inHg

3:00 PM

Overcast

94° 💧 None 💨 6 mph H 19%29.97 inHg

4:00 PM

Overcast

94° 💧 None 💨 6 mph H 18%29.97 inHg

5:00 PM

Overcast

94° 💧 None 💨 5 mph H 18%29.94 inHg

6:00 PM

Overcast

92° 💧 None 💨 4 mph H 22%29.94 inHg

7:00 PM

Overcast

87° 💧 None 💨 3 mph H 29%29.94 inHg

8:00 PM

Overcast night

84° 💧 None 💨 1 mph H 30%29.94 inHg

9:00 PM

Mostly cloudy night

81° 💧 None 💨 2 mph H 33%29.94 inHg

10:00 PM

Clear night

75° 💧 None 💨 4 mph H 42%29.97 inHg

11:00 PM

Clear night

72° 💧 None 💨 6 mph H 48%29.97 inHg

Tomorrow

12:00 AM

Mostly clear night

72° 💧 None 💨 6 mph H 48%29.94 inHg

1:00 AM

Mostly clear night

72° 💧 None 💨 7 mph H 47%29.94 inHg

2:00 AM

Clear night

71° 💧 None 💨 7 mph H 48%29.94 inHg

3:00 AM

Clear night

71° 💧 None 💨 7 mph H 49%29.94 inHg

4:00 AM

Clear night

71° 💧 None 💨 8 mph H 48%29.94 inHg

5:00 AM

Clear night

71° 💧 None 💨 8 mph H 47%29.94 inHg

6:00 AM

Clear night

71° 💧 None 💨 8 mph H 46%29.94 inHg

7:00 AM

Mostly sunny

71° 💧 None 💨 8 mph H 46%29.94 inHg

8:00 AM

Sunny

76° 💧 None 💨 6 mph H 40%29.94 inHg

9:00 AM

Sunny

84° 💧 None 💨 1 mph H 33%29.94 inHg

10:00 AM

Sunny

88° 💧 None 💨 3 mph H 25%29.94 inHg

11:00 AM

Sunny

91° 💧 None 💨 5 mph H 20%29.94 inHg

12:00 PM

Mostly sunny

94° 💧 None 💨 6 mph H 17%29.94 inHg

1:00 PM

Mostly sunny

95° 💧 None 💨 7 mph H 17%29.91 inHg

2:00 PM

Mostly sunny

97° 💧 None 💨 7 mph H 17%29.88 inHg

3:00 PM

Partly cloudy

97° 💧 None 💨 7 mph H 16%29.85 inHg

4:00 PM

Mostly cloudy

97° 💧 None 💨 7 mph H 17%29.83 inHg

5:00 PM

Mostly sunny

97° 💧 None 💨 7 mph H 17%29.83 inHg

6:00 PM

Mostly sunny

95° 💧 None 💨 6 mph H 18%29.83 inHg

7:00 PM

Mostly sunny

90° 💧 None 💨 7 mph H 22%29.83 inHg

8:00 PM

Clear night

85° 💧 None 💨 8 mph H 24%29.83 inHg

9:00 PM

Clear night

82° 💧 None 💨 9 mph H 27%29.85 inHg

10:00 PM

Clear night

79° 💧 None 💨 9 mph H 29%29.88 inHg

11:00 PM

Clear night

77° 💧 None 💨 9 mph H 30%29.88 inHg

Friday

12:00 AM

Clear night

76° 💧 None 💨 10 mph H 31%29.85 inHg

1:00 AM

Clear night

74° 💧 None 💨 10 mph H 33%29.85 inHg

2:00 AM

Clear night

73° 💧 None 💨 10 mph H 34%29.88 inHg

3:00 AM

Clear night

72° 💧 None 💨 10 mph H 34%29.85 inHg

4:00 AM

Clear night

71° 💧 None 💨 9 mph H 35%29.85 inHg

5:00 AM

Clear night

69° 💧 None 💨 9 mph H 38%29.85 inHg

6:00 AM

Clear night

68° 💧 None 💨 8 mph H 40%29.85 inHg

7:00 AM

Sunny

67° 💧 None 💨 8 mph H 44%29.88 inHg

8:00 AM

Sunny

69° 💧 None 💨 8 mph H 42%29.88 inHg

9:00 AM

Sunny

72° 💧 None 💨 8 mph H 38%29.88 inHg

10:00 AM

Sunny

75° 💧 None 💨 7 mph H 36%29.88 inHg

11:00 AM

Sunny

78° 💧 None 💨 7 mph H 32%29.88 inHg

12:00 PM

Sunny

81° 💧 None 💨 7 mph H 29%29.88 inHg

1:00 PM

Sunny

84° 💧 None 💨 7 mph H 25%29.85 inHg

2:00 PM

Sunny

86° 💧 None 💨 7 mph H 23%29.85 inHg

3:00 PM

Sunny

88° 💧 None 💨 7 mph H 21%29.83 inHg

4:00 PM

Sunny

88° 💧 None 💨 8 mph H 20%29.80 inHg

5:00 PM

Sunny

87° 💧 None 💨 7 mph H 21%29.80 inHg

Saturday

2:00 AM

Clear night

69° 💧 None 💨 10 mph H 50%29.83 inHg

5:00 AM

Clear night

65° 💧 None 💨 10 mph H 54%29.83 inHg

8:00 AM

Partly cloudy

65° 💧 None 💨 11 mph H 57%29.88 inHg

11:00 AM

Mostly sunny

73° 💧 None 💨 11 mph H 42%29.88 inHg

2:00 PM

Mostly sunny

83° 💧 None 💨 11 mph H 25%29.85 inHg

5:00 PM

Sunny

82° 💧 None 💨 11 mph H 28%29.83 inHg

8:00 PM

Clear night

71° 💧 None 💨 9 mph H 47%29.85 inHg

11:00 PM

Clear night

65° 💧 None 💨 8 mph H 60%29.91 inHg

Sunday

2:00 AM

Clear night

61° 💧 None 💨 5 mph H 70%29.94 inHg

5:00 AM

Clear night

58° 💧 None 💨 2 mph H 81%29.94 inHg

8:00 AM

Sunny

60° 💧 None 💨 1 mph H 75%29.97 inHg

11:00 AM

Sunny

71° 💧 None 💨 6 mph H 47%29.97 inHg

2:00 PM

Sunny

82° 💧 None 💨 6 mph H 19%29.88 inHg

5:00 PM

Sunny

85° 💧 None 💨 6 mph H 12%29.83 inHg

8:00 PM

Clear night

78° 💧 None 💨 1 mph H 17%29.80 inHg

11:00 PM

Clear night

70° 💧 None 💨 3 mph H 28%29.83 inHg

Monday

2:00 AM

Clear night

65° 💧 None 💨 5 mph H 46%29.83 inHg

5:00 AM

Clear night

62° 💧 None 💨 4 mph H 55%29.80 inHg

8:00 AM

Sunny

63° 💧 None 💨 4 mph H 46%29.85 inHg

11:00 AM

Sunny

76° 💧 None 💨 2 mph H 30%29.85 inHg

2:00 PM

Sunny

86° 💧 None 💨 2 mph H 20%29.80 inHg

5:00 PM

Sunny

88° 💧 None 💨 2 mph H 16%29.74 inHg

8:00 PM

Clear night

81° 💧 None 💨 5 mph H 21%29.77 inHg

11:00 PM

Clear night

72° 💧 None 💨 7 mph H 43%29.80 inHg

Tuesday

5:00 AM

Clear night

72° 💧 None 💨 6 mph H 42%29.83 inHg

11:00 AM

Sunny

62° 💧 None 💨 7 mph H 69%29.85 inHg

5:00 PM

Sunny

72° 💧 None 💨 6 mph H 47%29.91 inHg

11:00 PM

Mostly cloudy night

83° 💧 None 💨 7 mph H 24%29.85 inHg

Wednesday

5:00 AM

Clear night

64° 💧 None 💨 9 mph H 70%29.94 inHg

11:00 AM

Sunny

58° 💧 None 💨 7 mph H 85%29.97 inHg

5:00 PM

Mostly sunny

67° 💧 None 💨 6 mph H 60%30.00 inHg

11:00 PM

Clear night

81° 💧 None 💨 5 mph H 27%29.91 inHg

Thursday

5:00 AM

Clear night

64° 💧 None 💨 8 mph H 64%29.97 inHg

11:00 AM

Sunny

58° 💧 None 💨 7 mph H 78%29.94 inHg

5:00 PM

Sunny

69° 💧 None 💨 7 mph H 52%30.00 inHg

11:00 PM

Clear night

82° 💧 None 💨 7 mph H 17%29.91 inHg

Friday

5:00 AM

Clear night

64° 💧 None 💨 9 mph H 49%30.00 inHg

11:00 AM

Sunny

56° 💧 None 💨 8 mph H 82%30.03 inHg

5:00 PM

Sunny

67° 💧 None 💨 3 mph H 52%30.06 inHg

11:00 PM

Clear night

80° 💧 None 💨 3 mph H 20%29.97 inHg

Saturday

5:00 AM

Clear night

66° 💧 None 💨 2 mph H 39%29.97 inHg

11:00 AM

Sunny

57° 💧 None 💨 4 mph H 65%29.94 inHg

5:00 PM

Sunny

72° 💧 None 💨 4 mph H 47%29.97 inHg

11:00 PM

Clear night

84° 💧 None 💨 3 mph H 16%29.83 inHg

Sunday

5:00 AM

Clear night

64° 💧 None 💨 7 mph H 62%29.88 inHg

11:00 AM

Mostly sunny

56° 💧 None 💨 7 mph H 86%29.88 inHg

5:00 PM

Mostly sunny

66° 💧 None 💨 4 mph H 61%29.94 inHg

11:00 PM

Clear night

81° 💧 None 💨 4 mph H 28%29.85 inHg

Monday

5:00 AM

Clear night

66° 💧 None 💨 5 mph H 61%29.91 inHg

11:00 AM

Sunny

59° 💧 None 💨 4 mph H 76%29.94 inHg

5:00 PM

Sunny

74° 💧 None 💨 3 mph H 41%30.00 inHg

11:00 PM

Clear night

87° 💧 None 💨 6 mph H 19%29.88 inHg

Tuesday

5:00 AM

Clear night

71° 💧 None 💨 3 mph H 32%29.91 inHg

11:00 AM

Sunny

66° 💧 None 💨 14 mph H 27%29.94 inHg

5:00 PM

Sunny

80° 💧 None 💨 19 mph H 14%29.94 inHg

11:00 PM

Clear night

91° 💧 None 💨 16 mph H 10%29.85 inHg

Wednesday

5:00 AM

Clear night

76° 💧 None 💨 12 mph H 21%29.88 inHg

11:00 AM

Mostly sunny

68° 💧 None 💨 6 mph H 28%29.88 inHg

5:00 PM

Sunny

84° 💧 None 💨 2 mph H 19%29.91 inHg

11:00 PM

Clear night

95° 💧 None 💨 5 mph H 11%29.77 inHg

In Newcastle and, more broadly, across the state of California: This morning, the sky will feature a mix of sun and clouds, with temperatures climbing quickly into the upper 60s. Expect the heat to intensify as the day progresses, with afternoon highs reaching up to 102 degrees. Winds will be moderate from the northwest at around 10 mph, with gusts up to 17 mph, providing some relief from the heat. No precipitation is anticipated throughout the day, so dry conditions will persist. It will be a very hot day overall, so residents are advised to stay hydrated and take precautions against the heat, especially during peak afternoon hours.

15-Day Weather Outlook for Newcastle

TomorrowTomorrow

Overcast 97°/71° 💧 None 💨 8 mph

Friday, Sep 11Fri Sep 11

Mostly sunny 97°/67° 💧 None 💨 10 mph

Saturday, Sep 12Sat Sep 12

Sunny 87°/64° 💧 None 💨 12 mph

Sunday, Sep 13Sun Sep 13

Sunny 84°/59° 💧 None 💨 11 mph

Monday, Sep 14Mon Sep 14

Partly cloudy 86°/63° 💧 None 💨 6 mph

Tuesday, Sep 15Tue Sep 15

Sunny 87°/62° 💧 None 💨 7 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 83°/58° 💧 None 💨 9 mph

Thursday, Sep 17Thu Sep 17

Sunny 81°/58° 💧 None 💨 8 mph

Friday, Sep 18Fri Sep 18

Sunny 82°/56° 💧 None 💨 9 mph

Saturday, Sep 19Sat Sep 19

Sunny 80°/57° 💧 None 💨 4 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 84°/56° 💧 None 💨 7 mph

Monday, Sep 21Mon Sep 21

Sunny 81°/59° 💧 None 💨 5 mph

Tuesday, Sep 22Tue Sep 22

Sunny 87°/66° 💧 None 💨 19 mph

Wednesday, Sep 23Wed Sep 23

Mostly sunny 91°/68° 💧 None 💨 16 mph

Thursday, Sep 24Thu Sep 24

Sunny 95°/95° 💧 None 💨 5 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Newcastle

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Newcastle

Hourly forecast · Updated every 2 hours

Moderate

Nearest forecast value 8:00 AM

PM2.5 Fine particles Moderate 25,7µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Fair 34,3µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 40,0µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 35,7µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Sensitive people should reduce strenuous and prolonged outdoor exertion.

UV & HEALTH

UV, Sun & Health Outlook in Newcastle

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 8,0Very high 😐Moderate

Tomorrow UV 6,2High 😷Poor

Friday UV 7,7High 😐Moderate

Saturday UV 7,6High 😐Moderate

Sunday UV 7,0High 🙂Fair

Monday UV 7,0High —Unavailable

Tuesday UV 7,0High —Unavailable

Hourly UV index today

8:00 AMUV 0,5 9:00 AMUV 1,6 10:00 AMUV 3,4 11:00 AMUV 5,5 12:00 PMUV 7,3 1:00 PMUV 8,0 2:00 PMUV 7,5 3:00 PMUV 5,9 4:00 PMUV 3,7 5:00 PMUV 1,8 6:00 PMUV 0,6 7:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

Caution for sensitive people

People with respiratory or cardiovascular conditions should reduce prolonged outdoor exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Newcastle

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · NEWCASTLE, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

99/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 8:53 PM–5:10 AM

☁ Cloud cover 2% Real hourly forecast for the best viewing hour.

☾ Moonlight 2% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 89° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min81%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

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Forecast data for Newcastle were last refreshed today at 7:29 AM. The current forecast period extends through 11/09/2026 at 5:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.