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Current weather in Arroyo Grande is clear sky.

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

Now · 11:41 AM

Arroyo Grande Weather & Hourly Forecast

United States · California · 93420

72°F

Sunny

Feels like: 71°F

💧 Humidity 59% 🌡 Pressure 29.97 inHg 💨 Wind 6 mph 👁 Visibility 3.5 mi ☁ Clouds 2% ☀️ UV index 5.8 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Arroyo Grande

Today

12:00 PM

Sunny

72° 💧 None 💨 6 mph H 59%29.97 inHg

3:00 PM

Mostly sunny

75° 💧 None 💨 9 mph H 52%29.94 inHg

6:00 PM

Mostly sunny

69° 💧 None 💨 7 mph H 62%29.91 inHg

9:00 PM

Clear night

61° 💧 None 💨 0 mph H 85%29.94 inHg

Tomorrow

12:00 AM

Clear night

58° 💧 None 💨 0 mph H 95%29.97 inHg

3:00 AM

Mostly clear night

55° 💧 None 💨 0 mph H 99%29.94 inHg

6:00 AM

Partly cloudy night

54° 💧 None 💨 1 mph H 92%29.94 inHg

9:00 AM

Fog

61° 💧 None 💨 2 mph H 82%29.97 inHg

12:00 PM

Sunny

71° 💧 None 💨 6 mph H 61%29.97 inHg

3:00 PM

Sunny

75° 💧 None 💨 8 mph H 53%29.91 inHg

6:00 PM

Sunny

71° 💧 None 💨 6 mph H 59%29.91 inHg

9:00 PM

Clear night

63° 💧 None 💨 1 mph H 81%29.94 inHg

Tuesday

12:00 AM

Clear night

59° 💧 None 💨 1 mph H 92%29.94 inHg

3:00 AM

Clear night

58° 💧 None 💨 1 mph H 96%29.94 inHg

6:00 AM

Partly cloudy night

57° 💧 None 💨 1 mph H 94%29.94 inHg

9:00 AM

Mostly sunny

65° 💧 None 💨 2 mph H 79%29.97 inHg

Today

12:00 PM

Sunny

72° 💧 None 💨 6 mph H 59%29.97 inHg

1:00 PM

Sunny

74° 💧 None 💨 7 mph H 56%29.94 inHg

2:00 PM

Sunny

74° 💧 None 💨 8 mph H 53%29.94 inHg

3:00 PM

Mostly sunny

75° 💧 None 💨 9 mph H 52%29.94 inHg

4:00 PM

Partly cloudy

74° 💧 None 💨 9 mph H 53%29.91 inHg

5:00 PM

Mostly cloudy

72° 💧 None 💨 8 mph H 56%29.91 inHg

6:00 PM

Mostly sunny

69° 💧 None 💨 7 mph H 62%29.91 inHg

7:00 PM

Sunny

66° 💧 None 💨 5 mph H 69%29.94 inHg

8:00 PM

Clear night

63° 💧 None 💨 2 mph H 79%29.94 inHg

9:00 PM

Clear night

61° 💧 None 💨 0 mph H 85%29.94 inHg

10:00 PM

Clear night

60° 💧 None 💨 0 mph H 87%29.97 inHg

11:00 PM

Clear night

59° 💧 None 💨 0 mph H 91%29.97 inHg

Tomorrow

12:00 AM

Clear night

58° 💧 None 💨 0 mph H 95%29.97 inHg

1:00 AM

Mostly clear night

57° 💧 None 💨 0 mph H 98%29.97 inHg

2:00 AM

Mist at night

56° 💧 None 💨 0 mph H 99%29.94 inHg

3:00 AM

Mostly clear night

55° 💧 None 💨 0 mph H 99%29.94 inHg

4:00 AM

Mostly clear night

55° 💧 None 💨 0 mph H 97%29.94 inHg

5:00 AM

Mostly clear night

54° 💧 None 💨 1 mph H 94%29.94 inHg

6:00 AM

Partly cloudy night

54° 💧 None 💨 1 mph H 92%29.94 inHg

7:00 AM

Mist

54° 💧 None 💨 1 mph H 90%29.94 inHg

8:00 AM

Mist

57° 💧 None 💨 2 mph H 84%29.97 inHg

9:00 AM

Fog

61° 💧 None 💨 2 mph H 82%29.97 inHg

10:00 AM

Mostly sunny

65° 💧 None 💨 4 mph H 73%29.94 inHg

11:00 AM

Sunny

68° 💧 None 💨 5 mph H 65%29.94 inHg

12:00 PM

Sunny

71° 💧 None 💨 6 mph H 61%29.97 inHg

1:00 PM

Sunny

73° 💧 None 💨 7 mph H 59%29.94 inHg

2:00 PM

Sunny

74° 💧 None 💨 7 mph H 55%29.94 inHg

3:00 PM

Sunny

75° 💧 None 💨 8 mph H 53%29.91 inHg

4:00 PM

Sunny

75° 💧 None 💨 8 mph H 52%29.91 inHg

5:00 PM

Sunny

74° 💧 None 💨 7 mph H 55%29.91 inHg

6:00 PM

Sunny

71° 💧 None 💨 6 mph H 59%29.91 inHg

7:00 PM

Sunny

68° 💧 None 💨 4 mph H 66%29.91 inHg

8:00 PM

Clear night

65° 💧 None 💨 3 mph H 75%29.91 inHg

9:00 PM

Clear night

63° 💧 None 💨 1 mph H 81%29.94 inHg

10:00 PM

Clear night

62° 💧 None 💨 1 mph H 86%29.94 inHg

11:00 PM

Clear night

60° 💧 None 💨 0 mph H 89%29.94 inHg

Tuesday

12:00 AM

Clear night

59° 💧 None 💨 1 mph H 92%29.94 inHg

1:00 AM

Clear night

58° 💧 None 💨 1 mph H 95%29.94 inHg

2:00 AM

Clear night

58° 💧 None 💨 1 mph H 96%29.94 inHg

3:00 AM

Clear night

58° 💧 None 💨 1 mph H 96%29.94 inHg

4:00 AM

Mostly clear night

57° 💧 None 💨 1 mph H 96%29.94 inHg

5:00 AM

Mostly clear night

57° 💧 None 💨 1 mph H 95%29.94 inHg

6:00 AM

Partly cloudy night

57° 💧 None 💨 1 mph H 94%29.94 inHg

7:00 AM

Mist

57° 💧 None 💨 0 mph H 93%29.97 inHg

8:00 AM

Fog

60° 💧 None 💨 0 mph H 88%29.97 inHg

9:00 AM

Mostly sunny

65° 💧 None 💨 2 mph H 79%29.97 inHg

10:00 AM

Mostly sunny

69° 💧 None 💨 3 mph H 67%29.97 inHg

11:00 AM

Mostly cloudy

73° 💧 None 💨 4 mph H 59%29.97 inHg

12:00 PM

Mostly sunny

75° 💧 None 💨 6 mph H 55%29.97 inHg

1:00 PM

Mostly cloudy

77° 💧 None 💨 7 mph H 54%29.97 inHg

2:00 PM

Overcast

78° 💧 None 💨 8 mph H 51%29.94 inHg

3:00 PM

Mostly cloudy

79° 💧 None 💨 7 mph H 47%29.94 inHg

4:00 PM

Overcast

80° 💧 None 💨 8 mph H 45%29.91 inHg

5:00 PM

Mostly cloudy

78° 💧 None 💨 6 mph H 44%29.91 inHg

6:00 PM

Overcast

76° 💧 None 💨 5 mph H 46%29.91 inHg

7:00 PM

Overcast

73° 💧 None 💨 3 mph H 52%29.91 inHg

8:00 PM

Overcast night

71° 💧 None 💨 3 mph H 58%29.91 inHg

9:00 PM

Overcast night

68° 💧 None 💨 5 mph H 69%29.94 inHg

10:00 PM

Mostly cloudy night

66° 💧 None 💨 1 mph H 75%29.97 inHg

11:00 PM

Overcast night

65° 💧 None 💨 2 mph H 78%29.97 inHg

Wednesday

12:00 AM

Overcast night

64° 💧 None 💨 1 mph H 82%29.94 inHg

1:00 AM

Overcast night

64° 💧 None 💨 2 mph H 81%29.94 inHg

2:00 AM

Mostly clear night

64° 💧 None 💨 4 mph H 81%29.94 inHg

3:00 AM

Mostly cloudy night

63° 💧 None 💨 1 mph H 85%29.94 inHg

4:00 AM

Mostly cloudy night

63° 💧 None 💨 1 mph H 83%29.94 inHg

5:00 AM

Overcast night

63° 💧 None 💨 1 mph H 80%29.94 inHg

8:00 AM

Partly cloudy

77° 💧 None 💨 2 mph H 38%29.94 inHg

11:00 AM

Mostly cloudy

98° 💧 None 💨 7 mph H 18%29.97 inHg

2:00 PM

Sunny

91° 💧 None 💨 9 mph H 31%29.94 inHg

5:00 PM

Sunny

86° 💧 None 💨 6 mph H 35%29.94 inHg

8:00 PM

Clear night

76° 💧 None 💨 1 mph H 52%29.97 inHg

11:00 PM

Clear night

70° 💧 None 💨 1 mph H 68%30.00 inHg

Thursday

2:00 AM

Clear night

66° 💧 None 💨 1 mph H 81%29.97 inHg

5:00 AM

Clear night

64° 💧 None 💨 1 mph H 84%29.97 inHg

8:00 AM

Sunny

66° 💧 None 💨 1 mph H 77%30.00 inHg

11:00 AM

Sunny

76° 💧 None 💨 7 mph H 56%30.00 inHg

2:00 PM

Sunny

81° 💧 None 💨 12 mph H 43%29.94 inHg

5:00 PM

Sunny

78° 💧 None 💨 11 mph H 47%29.91 inHg

8:00 PM

Clear night

69° 💧 None 💨 5 mph H 67%29.91 inHg

11:00 PM

Mostly clear night

63° 💧 None 💨 2 mph H 81%29.94 inHg

Friday

2:00 AM

Mostly clear night

61° 💧 None 💨 1 mph H 88%29.94 inHg

5:00 AM

Partly cloudy night

59° 💧 None 💨 3 mph H 96%29.91 inHg

8:00 AM

Partly cloudy

62° 💧 None 💨 3 mph H 94%29.91 inHg

11:00 AM

Sunny

74° 💧 None 💨 8 mph H 62%29.91 inHg

2:00 PM

Sunny

75° 💧 None 💨 12 mph H 53%29.88 inHg

5:00 PM

Sunny

70° 💧 None 💨 11 mph H 67%29.85 inHg

8:00 PM

Mostly clear night

62° 💧 None 💨 6 mph H 92%29.85 inHg

11:00 PM

Mostly cloudy night

59° 💧 None 💨 1 mph H 98%29.88 inHg

Saturday

5:00 AM

Partly cloudy night

59° 💧 None 💨 2 mph H 96%29.88 inHg

11:00 AM

Overcast

55° 💧 None 💨 1 mph H 99%29.88 inHg

5:00 PM

Mostly sunny

68° 💧 None 💨 7 mph H 64%29.91 inHg

11:00 PM

Clear night

67° 💧 None 💨 12 mph H 69%29.85 inHg

Sunday

5:00 AM

Overcast night

57° 💧 None 💨 2 mph H 95%29.88 inHg

11:00 AM

Overcast

54° 💧 None 💨 0 mph H 100%29.85 inHg

5:00 PM

Partly cloudy

67° 💧 None 💨 6 mph H 63%29.88 inHg

11:00 PM

Mostly cloudy night

70° 💧 None 💨 9 mph H 63%29.80 inHg

Monday

5:00 AM

Mostly cloudy night

57° 💧 None 💨 1 mph H 99%29.85 inHg

11:00 AM

Overcast

54° 💧 None 💨 4 mph H 98%29.85 inHg

5:00 PM

Mostly sunny

70° 💧 None 💨 4 mph H 60%29.91 inHg

11:00 PM

Clear night

69° 💧 None 💨 6 mph H 65%29.85 inHg

Tuesday

5:00 AM

Partly cloudy night

57° 💧 None 💨 3 mph H 99%29.88 inHg

11:00 AM

Overcast

56° 💧 None 💨 4 mph H 97%29.91 inHg

5:00 PM

Sunny

74° 💧 None 💨 4 mph H 60%29.94 inHg

11:00 PM

Mostly clear night

71° 💧 None 💨 5 mph H 65%29.91 inHg

Wednesday

5:00 AM

Clear night

60° 💧 None 💨 1 mph H 96%29.94 inHg

11:00 AM

Mostly cloudy

56° 💧 None 💨 3 mph H 99%29.94 inHg

5:00 PM

Mostly sunny

73° 💧 None 💨 4 mph H 66%30.00 inHg

11:00 PM

Clear night

70° 💧 None 💨 6 mph H 64%29.94 inHg

Thursday

5:00 AM

Clear night

59° 💧 None 💨 3 mph H 95%29.97 inHg

11:00 AM

Overcast

56° 💧 None 💨 3 mph H 98%29.97 inHg

5:00 PM

Mostly sunny

68° 💧 None 💨 4 mph H 66%29.97 inHg

11:00 PM

Clear night

69° 💧 None 💨 7 mph H 68%29.91 inHg

Friday

5:00 AM

Partly cloudy night

58° 💧 None 💨 4 mph H 98%29.94 inHg

11:00 AM

Overcast

56° 💧 None 💨 3 mph H 96%29.88 inHg

5:00 PM

Sunny

67° 💧 None 💨 4 mph H 66%29.91 inHg

11:00 PM

Clear night

68° 💧 None 💨 8 mph H 72%29.83 inHg

Saturday

5:00 AM

Clear night

59° 💧 None 💨 3 mph H 95%29.88 inHg

11:00 AM

Mostly cloudy

56° 💧 None 💨 2 mph H 94%29.88 inHg

5:00 PM

Sunny

69° 💧 None 💨 5 mph H 62%29.91 inHg

11:00 PM

Clear night

68° 💧 None 💨 8 mph H 71%29.88 inHg

Sunday

5:00 AM

Clear night

58° 💧 None 💨 2 mph H 96%29.94 inHg

11:00 AM

Overcast

55° 💧 None 💨 2 mph H 99%29.94 inHg

5:00 PM

Mostly sunny

68° 💧 None 💨 5 mph H 67%29.97 inHg

11:00 PM

Clear night

70° 💧 None 💨 9 mph H 64%29.94 inHg

In Arroyo Grande and, more broadly, across the state of California: The rest of the day will feature clear skies and mild to warm temperatures ranging from 70 to 84 degrees Fahrenheit. Winds will be moderate, coming from the northwest at speeds up to 14 mph, with gusts reaching 30 mph. No precipitation is expected, so outdoor plans should be comfortable and dry. As the day progresses, expect continued pleasant weather with the potential for breezy conditions due to the gusty northwest winds. Temperatures will remain steady, making it a good afternoon for outdoor activities.

15-Day Weather Outlook for Arroyo Grande

TomorrowTomorrow

Mostly cloudy 75°/54° 💧 None 💨 8 mph

Tuesday, Sep 8Tue Sep 8

Mostly sunny 80°/57° 💧 None 💨 8 mph

Wednesday, Sep 9Wed Sep 9

Mostly cloudy 98°/63° 💧 None 💨 9 mph

Thursday, Sep 10Thu Sep 10

Sunny 86°/64° 💧 None 💨 12 mph

Friday, Sep 11Fri Sep 11

Mostly sunny 78°/59° 💧 None 💨 12 mph

Saturday, Sep 12Sat Sep 12

Overcast 70°/55° 💧 0.075 in 💨 11 mph

Sunday, Sep 13Sun Sep 13

Overcast 68°/54° 💧 None 💨 12 mph

Monday, Sep 14Mon Sep 14

Partly cloudy 70°/54° 💧 0.001 in 💨 9 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 70°/56° 💧 None 💨 6 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 74°/56° 💧 None 💨 5 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 73°/56° 💧 None 💨 6 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 69°/56° 💧 None 💨 7 mph

Saturday, Sep 19Sat Sep 19

Mostly cloudy 68°/56° 💧 None 💨 8 mph

Sunday, Sep 20Sun Sep 20

Overcast 69°/55° 💧 None 💨 8 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 70°/68° 💧 None 💨 9 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Arroyo Grande

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Arroyo Grande

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 12:00 PM

PM2.5 Fine particles Good 3,7µg/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 Good 11,6µg/m³

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

O₃ Ozone Fair 81,4µg/m³

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

NO₂ Nitrogen dioxide Good 1,0µg/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 Arroyo Grande

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 8,4Very high 🙂Fair

Tuesday UV 8,7Very high 😐Moderate

Wednesday UV 9,0Very high 😐Moderate

Thursday UV 7,0High 😐Moderate

Friday UV 7,0High —Unavailable

Saturday UV 6,0High —Unavailable

Hourly UV index today

12:00 PMUV 7,6 1:00 PMUV 8,2 2:00 PMUV 7,6 3:00 PMUV 5,9 4:00 PMUV 3,7 5:00 PMUV 1,7 6:00 PMUV 0,5 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.

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 Arroyo Grande

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ARROYO GRANDE, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 10:00 PM–11:00 PM.

99/100Best-hour score

BEST TIME TONIGHT 10:00 PM–11:00 PM Astronomical darkness: 8:49 PM–5:12 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 23% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 11° high at the best hour.

✦ Estimated visible meteors 0–1/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min26%

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.

Forecast data for Arroyo Grande were last refreshed today at 11:41 AM. The current forecast period extends through 08/09/2026 at 9:00 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.