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Current weather in Walnut Creek is broken clouds.

Where can I find the hourly weather forecast for Walnut Creek?

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

Is the weather forecast for Walnut Creek updated regularly?

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

Now · 6:23 AM

Walnut Creek Weather & Hourly Forecast

United States · California · 94598

70°F

Mostly cloudy night

Feels like: 69°F

💧 Humidity 42% 🌡 Pressure 30.03 inHg 💨 Wind 1 mph 👁 Visibility 23.6 mi ☁ Clouds 69% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Walnut Creek

Today

7:00 AM

Partly cloudy

71° 💧 None 💨 1 mph H 38%30.06 inHg

10:00 AM

Overcast

86° 💧 None 💨 3 mph H 18%30.06 inHg

1:00 PM

Partly cloudy

94° 💧 None 💨 4 mph H 13%30.03 inHg

4:00 PM

Partly cloudy

97° 💧 None 💨 8 mph H 12%29.97 inHg

7:00 PM

Mostly sunny

90° 💧 None 💨 7 mph H 16%29.94 inHg

10:00 PM

Clear night

82° 💧 None 💨 2 mph H 22%30.00 inHg

Tomorrow

1:00 AM

Clear night

75° 💧 None 💨 5 mph H 31%29.97 inHg

4:00 AM

Clear night

74° 💧 None 💨 6 mph H 33%29.97 inHg

7:00 AM

Partly cloudy

71° 💧 None 💨 6 mph H 39%29.97 inHg

10:00 AM

Sunny

82° 💧 None 💨 7 mph H 28%30.00 inHg

1:00 PM

Sunny

89° 💧 None 💨 7 mph H 24%29.94 inHg

4:00 PM

Overcast

89° 💧 None 💨 8 mph H 23%29.88 inHg

7:00 PM

Overcast

74° 💧 None 💨 9 mph H 49%29.88 inHg

10:00 PM

Clear night

65° 💧 None 💨 9 mph H 71%29.94 inHg

Friday

1:00 AM

Clear night

60° 💧 None 💨 9 mph H 84%29.91 inHg

4:00 AM

Mostly cloudy night

58° 💧 None 💨 10 mph H 89%29.91 inHg

Today

7:00 AM

Partly cloudy

71° 💧 None 💨 1 mph H 38%30.06 inHg

8:00 AM

Mostly cloudy

77° 💧 None 💨 2 mph H 32%30.06 inHg

9:00 AM

Mostly cloudy

82° 💧 None 💨 3 mph H 24%30.06 inHg

10:00 AM

Overcast

86° 💧 None 💨 3 mph H 18%30.06 inHg

11:00 AM

Overcast

88° 💧 None 💨 5 mph H 16%30.06 inHg

12:00 PM

Mostly cloudy

91° 💧 None 💨 5 mph H 15%30.06 inHg

1:00 PM

Partly cloudy

94° 💧 None 💨 4 mph H 13%30.03 inHg

2:00 PM

Mostly sunny

96° 💧 None 💨 5 mph H 12%30.00 inHg

3:00 PM

Mostly sunny

97° 💧 None 💨 6 mph H 12%29.97 inHg

4:00 PM

Partly cloudy

97° 💧 None 💨 8 mph H 12%29.97 inHg

5:00 PM

Mostly cloudy

96° 💧 None 💨 8 mph H 13%29.94 inHg

6:00 PM

Partly cloudy

94° 💧 None 💨 9 mph H 14%29.94 inHg

7:00 PM

Mostly sunny

90° 💧 None 💨 7 mph H 16%29.94 inHg

8:00 PM

Mostly clear night

86° 💧 None 💨 3 mph H 18%29.97 inHg

9:00 PM

Clear night

84° 💧 None 💨 3 mph H 20%29.97 inHg

10:00 PM

Clear night

82° 💧 None 💨 2 mph H 22%30.00 inHg

11:00 PM

Clear night

80° 💧 None 💨 3 mph H 25%29.97 inHg

Tomorrow

12:00 AM

Clear night

77° 💧 None 💨 5 mph H 28%29.97 inHg

1:00 AM

Clear night

75° 💧 None 💨 5 mph H 31%29.97 inHg

2:00 AM

Clear night

75° 💧 None 💨 5 mph H 31%29.97 inHg

3:00 AM

Clear night

74° 💧 None 💨 5 mph H 31%29.97 inHg

4:00 AM

Clear night

74° 💧 None 💨 6 mph H 33%29.97 inHg

5:00 AM

Clear night

73° 💧 None 💨 6 mph H 35%29.97 inHg

6:00 AM

Clear night

72° 💧 None 💨 7 mph H 37%29.97 inHg

7:00 AM

Partly cloudy

71° 💧 None 💨 6 mph H 39%29.97 inHg

8:00 AM

Mostly cloudy

74° 💧 None 💨 7 mph H 37%29.97 inHg

9:00 AM

Mostly cloudy

79° 💧 None 💨 6 mph H 30%29.97 inHg

10:00 AM

Sunny

82° 💧 None 💨 7 mph H 28%30.00 inHg

11:00 AM

Sunny

85° 💧 None 💨 7 mph H 27%30.00 inHg

12:00 PM

Sunny

87° 💧 None 💨 7 mph H 26%29.97 inHg

1:00 PM

Sunny

89° 💧 None 💨 7 mph H 24%29.94 inHg

2:00 PM

Sunny

91° 💧 None 💨 8 mph H 22%29.91 inHg

3:00 PM

Mostly sunny

91° 💧 None 💨 8 mph H 21%29.91 inHg

4:00 PM

Overcast

89° 💧 None 💨 8 mph H 23%29.88 inHg

5:00 PM

Overcast

85° 💧 None 💨 8 mph H 27%29.88 inHg

6:00 PM

Overcast

79° 💧 None 💨 9 mph H 36%29.88 inHg

7:00 PM

Overcast

74° 💧 None 💨 9 mph H 49%29.88 inHg

8:00 PM

Mostly cloudy night

69° 💧 None 💨 8 mph H 60%29.91 inHg

9:00 PM

Mostly clear night

66° 💧 None 💨 8 mph H 68%29.91 inHg

10:00 PM

Clear night

65° 💧 None 💨 9 mph H 71%29.94 inHg

11:00 PM

Clear night

63° 💧 None 💨 9 mph H 76%29.94 inHg

Friday

12:00 AM

Mostly clear night

61° 💧 None 💨 9 mph H 81%29.91 inHg

1:00 AM

Clear night

60° 💧 None 💨 9 mph H 84%29.91 inHg

2:00 AM

Mostly clear night

59° 💧 None 💨 9 mph H 86%29.91 inHg

3:00 AM

Partly cloudy night

58° 💧 None 💨 9 mph H 88%29.91 inHg

4:00 AM

Mostly cloudy night

58° 💧 None 💨 10 mph H 89%29.91 inHg

5:00 AM

Mist at night

58° 💧 None 💨 11 mph H 90%29.91 inHg

6:00 AM

Mostly cloudy night

58° 💧 None 💨 11 mph H 90%29.91 inHg

7:00 AM

Mostly cloudy

58° 💧 None 💨 10 mph H 90%29.91 inHg

8:00 AM

Mostly cloudy

60° 💧 None 💨 10 mph H 87%29.91 inHg

9:00 AM

Partly cloudy

63° 💧 None 💨 10 mph H 76%29.91 inHg

10:00 AM

Mostly sunny

67° 💧 None 💨 10 mph H 66%29.91 inHg

11:00 AM

Mostly sunny

71° 💧 None 💨 10 mph H 55%29.91 inHg

12:00 PM

Sunny

74° 💧 None 💨 10 mph H 50%29.91 inHg

1:00 PM

Sunny

76° 💧 None 💨 10 mph H 46%29.91 inHg

2:00 PM

Sunny

77° 💧 None 💨 10 mph H 44%29.88 inHg

3:00 PM

Sunny

77° 💧 None 💨 10 mph H 46%29.88 inHg

4:00 PM

Sunny

75° 💧 None 💨 10 mph H 48%29.85 inHg

5:00 PM

Sunny

73° 💧 None 💨 10 mph H 52%29.85 inHg

Saturday

2:00 AM

Clear night

60° 💧 None 💨 11 mph H 74%29.85 inHg

5:00 AM

Mostly clear night

59° 💧 None 💨 13 mph H 82%29.88 inHg

8:00 AM

Mostly sunny

60° 💧 None 💨 12 mph H 76%29.91 inHg

11:00 AM

Partly cloudy

71° 💧 None 💨 13 mph H 46%29.94 inHg

2:00 PM

Sunny

75° 💧 None 💨 14 mph H 40%29.91 inHg

5:00 PM

Sunny

71° 💧 None 💨 14 mph H 47%29.91 inHg

8:00 PM

Clear night

63° 💧 None 💨 12 mph H 65%29.91 inHg

11:00 PM

Clear night

60° 💧 None 💨 12 mph H 72%29.97 inHg

Sunday

2:00 AM

Clear night

58° 💧 None 💨 9 mph H 73%29.97 inHg

5:00 AM

Clear night

56° 💧 None 💨 7 mph H 74%29.97 inHg

8:00 AM

Sunny

58° 💧 None 💨 5 mph H 69%30.00 inHg

11:00 AM

Sunny

70° 💧 None 💨 4 mph H 36%30.00 inHg

2:00 PM

Sunny

79° 💧 None 💨 4 mph H 24%29.91 inHg

5:00 PM

Sunny

81° 💧 None 💨 8 mph H 23%29.85 inHg

8:00 PM

Partly cloudy night

71° 💧 None 💨 8 mph H 38%29.85 inHg

11:00 PM

Clear night

64° 💧 None 💨 8 mph H 61%29.85 inHg

Monday

2:00 AM

Partly cloudy night

59° 💧 None 💨 8 mph H 79%29.85 inHg

5:00 AM

Clear night

56° 💧 None 💨 6 mph H 86%29.83 inHg

8:00 AM

Sunny

59° 💧 None 💨 5 mph H 77%29.85 inHg

11:00 AM

Sunny

77° 💧 None 💨 5 mph H 36%29.85 inHg

2:00 PM

Sunny

85° 💧 None 💨 7 mph H 23%29.83 inHg

5:00 PM

Sunny

79° 💧 None 💨 10 mph H 31%29.80 inHg

8:00 PM

Clear night

65° 💧 None 💨 11 mph H 67%29.83 inHg

11:00 PM

Clear night

60° 💧 None 💨 12 mph H 83%29.83 inHg

Tuesday

5:00 AM

Clear night

60° 💧 None 💨 11 mph H 80%29.85 inHg

11:00 AM

Mostly cloudy

57° 💧 None 💨 10 mph H 93%29.88 inHg

5:00 PM

Mostly sunny

66° 💧 None 💨 12 mph H 62%29.94 inHg

11:00 PM

Clear night

70° 💧 None 💨 13 mph H 57%29.91 inHg

Wednesday

5:00 AM

Partly cloudy night

58° 💧 None 💨 11 mph H 86%29.94 inHg

11:00 AM

Partly cloudy

57° 💧 None 💨 11 mph H 88%29.97 inHg

5:00 PM

Partly cloudy

65° 💧 None 💨 9 mph H 63%30.03 inHg

11:00 PM

Clear night

69° 💧 None 💨 11 mph H 53%29.97 inHg

Thursday

5:00 AM

Clear night

57° 💧 None 💨 12 mph H 86%29.97 inHg

11:00 AM

Partly cloudy

57° 💧 None 💨 11 mph H 89%29.97 inHg

5:00 PM

Sunny

69° 💧 None 💨 10 mph H 51%30.03 inHg

11:00 PM

Clear night

73° 💧 None 💨 10 mph H 39%29.97 inHg

Friday

5:00 AM

Clear night

57° 💧 None 💨 10 mph H 81%30.03 inHg

11:00 AM

Sunny

54° 💧 None 💨 9 mph H 91%30.03 inHg

5:00 PM

Sunny

67° 💧 None 💨 5 mph H 50%30.09 inHg

11:00 PM

Clear night

77° 💧 None 💨 7 mph H 29%30.00 inHg

Saturday

5:00 AM

Clear night

58° 💧 None 💨 7 mph H 82%30.00 inHg

11:00 AM

Mostly cloudy

56° 💧 None 💨 7 mph H 89%29.97 inHg

5:00 PM

Sunny

68° 💧 None 💨 8 mph H 56%29.97 inHg

11:00 PM

Clear night

71° 💧 None 💨 11 mph H 50%29.88 inHg

Sunday

5:00 AM

Mostly clear night

57° 💧 None 💨 13 mph H 86%29.88 inHg

11:00 AM

Mostly cloudy

57° 💧 None 💨 12 mph H 90%29.88 inHg

5:00 PM

Sunny

67° 💧 None 💨 9 mph H 56%29.94 inHg

11:00 PM

Clear night

69° 💧 None 💨 11 mph H 52%29.88 inHg

Monday

5:00 AM

Clear night

58° 💧 None 💨 9 mph H 85%29.94 inHg

11:00 AM

Sunny

55° 💧 None 💨 4 mph H 90%29.94 inHg

5:00 PM

Sunny

71° 💧 None 💨 2 mph H 49%30.00 inHg

11:00 PM

Clear night

85° 💧 None 💨 6 mph H 26%29.91 inHg

Tuesday

5:00 AM

Clear night

68° 💧 None 💨 5 mph H 52%29.94 inHg

11:00 AM

Sunny

70° 💧 None 💨 9 mph H 23%29.94 inHg

5:00 PM

Sunny

81° 💧 None 💨 17 mph H 13%29.94 inHg

11:00 PM

Clear night

91° 💧 None 💨 19 mph H 9%29.83 inHg

Wednesday

5:00 AM

Clear night

78° 💧 None 💨 16 mph H 19%29.85 inHg

11:00 AM

Sunny

71° 💧 None 💨 7 mph H 23%29.88 inHg

5:00 PM

Sunny

83° 💧 None 💨 7 mph H 16%29.91 inHg

11:00 PM

Clear night

91° 💧 None 💨 8 mph H 12%29.80 inHg

In Walnut Creek 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 Walnut Creek

TomorrowTomorrow

Mostly cloudy 96°/71° 💧 None 💨 9 mph

Friday, Sep 11Fri Sep 11

Overcast 85°/58° 💧 None 💨 11 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 75°/59° 💧 None 💨 14 mph

Sunday, Sep 13Sun Sep 13

Sunny 79°/56° 💧 None 💨 14 mph

Monday, Sep 14Mon Sep 14

Partly cloudy 85°/56° 💧 None 💨 8 mph

Tuesday, Sep 15Tue Sep 15

Mostly cloudy 79°/57° 💧 None 💨 12 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 70°/57° 💧 0.001 in 💨 13 mph

Thursday, Sep 17Thu Sep 17

Partly cloudy 69°/57° 💧 None 💨 12 mph

Friday, Sep 18Fri Sep 18

Sunny 73°/54° 💧 None 💨 10 mph

Saturday, Sep 19Sat Sep 19

Mostly cloudy 77°/56° 💧 None 💨 7 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 71°/57° 💧 None 💨 13 mph

Monday, Sep 21Mon Sep 21

Sunny 69°/55° 💧 None 💨 11 mph

Tuesday, Sep 22Tue Sep 22

Sunny 85°/68° 💧 None 💨 9 mph

Wednesday, Sep 23Wed Sep 23

Sunny 91°/71° 💧 0.001 in 💨 19 mph

Thursday, Sep 24Thu Sep 24

Sunny 91°/83° 💧 None 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Walnut Creek

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Walnut Creek

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 7:00 AM

PM2.5 Fine particles Fair 10,4µg/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 Good 16,8µg/m³

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

O₃ Ozone Fair 62,2µg/m³

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

NO₂ Nitrogen dioxide Good 3,4µg/m³

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

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Walnut Creek

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 8,2Very high 🙂Fair

Tomorrow UV 8,2Very high 🙂Fair

Friday UV 8,0Very high 😐Moderate

Saturday UV 7,9High 🙂Fair

Sunday UV 7,0High 🙂Fair

Monday UV 6,0High —Unavailable

Tuesday UV 6,0High —Unavailable

Hourly UV index today

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

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.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged 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 Walnut Creek

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · WALNUT CREEK, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 4:00 AM–5:00 AM.

100/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 8:55 PM–5:16 AM

☁ Cloud cover 0% 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 78° 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.

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Forecast data for Walnut Creek were last refreshed today at 6:23 AM. The current forecast period extends through 11/09/2026 at 4:00 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.