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Now · 8:14 AM

San Anselmo Weather & Hourly Forecast

United States · California · 94960

65°F

Sunny

Feels like: 65°F

💧 Humidity 57% 🌡 Pressure 29.97 inHg 💨 Wind 0 mph 👁 Visibility 21.2 mi ☁ Clouds 0% ☀️ UV index 0.4 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for San Anselmo

Today

9:00 AM

Sunny

71° 💧 None 💨 1 mph H 46%30.00 inHg

12:00 PM

Sunny

84° 💧 None 💨 3 mph H 27%30.00 inHg

3:00 PM

Mostly cloudy

90° 💧 None 💨 2 mph H 18%29.97 inHg

6:00 PM

Sunny

83° 💧 None 💨 5 mph H 36%29.94 inHg

9:00 PM

Overcast night

69° 💧 None 💨 3 mph H 51%30.00 inHg

Tomorrow

12:00 AM

Mostly cloudy night

69° 💧 None 💨 3 mph H 44%29.97 inHg

3:00 AM

Overcast night

68° 💧 None 💨 2 mph H 48%30.00 inHg

6:00 AM

Overcast night

68° 💧 None 💨 3 mph H 45%30.00 inHg

9:00 AM

Overcast

79° 💧 None 💨 2 mph H 34%30.03 inHg

12:00 PM

Partly cloudy

92° 💧 None 💨 0 mph H 16%30.03 inHg

3:00 PM

Mostly sunny

97° 💧 None 💨 5 mph H 16%30.00 inHg

6:00 PM

Partly cloudy

88° 💧 None 💨 8 mph H 20%29.97 inHg

9:00 PM

Partly cloudy night

80° 💧 None 💨 6 mph H 25%29.97 inHg

Thursday

12:00 AM

Clear night

75° 💧 None 💨 2 mph H 34%29.97 inHg

3:00 AM

Mostly clear night

70° 💧 None 💨 4 mph H 42%29.97 inHg

6:00 AM

Mostly cloudy night

68° 💧 None 💨 3 mph H 51%29.97 inHg

Today

9:00 AM

Sunny

71° 💧 None 💨 1 mph H 46%30.00 inHg

10:00 AM

Sunny

77° 💧 None 💨 1 mph H 39%30.00 inHg

11:00 AM

Sunny

81° 💧 None 💨 3 mph H 31%30.00 inHg

12:00 PM

Sunny

84° 💧 None 💨 3 mph H 27%30.00 inHg

1:00 PM

Mostly sunny

87° 💧 None 💨 3 mph H 22%29.97 inHg

2:00 PM

Mostly cloudy

89° 💧 None 💨 3 mph H 19%29.97 inHg

3:00 PM

Mostly cloudy

90° 💧 None 💨 2 mph H 18%29.97 inHg

4:00 PM

Mostly cloudy

89° 💧 None 💨 2 mph H 22%29.94 inHg

5:00 PM

Sunny

87° 💧 None 💨 3 mph H 27%29.94 inHg

6:00 PM

Sunny

83° 💧 None 💨 5 mph H 36%29.94 inHg

7:00 PM

Overcast

77° 💧 None 💨 5 mph H 44%29.97 inHg

8:00 PM

Mostly cloudy night

71° 💧 None 💨 5 mph H 48%29.97 inHg

9:00 PM

Overcast night

69° 💧 None 💨 3 mph H 51%30.00 inHg

10:00 PM

Mostly cloudy night

68° 💧 None 💨 3 mph H 48%30.00 inHg

11:00 PM

Mostly cloudy night

69° 💧 None 💨 3 mph H 44%29.97 inHg

Tomorrow

12:00 AM

Mostly cloudy night

69° 💧 None 💨 3 mph H 44%29.97 inHg

1:00 AM

Overcast night

69° 💧 None 💨 2 mph H 46%30.00 inHg

2:00 AM

Overcast night

68° 💧 None 💨 2 mph H 47%30.00 inHg

3:00 AM

Overcast night

68° 💧 None 💨 2 mph H 48%30.00 inHg

4:00 AM

Mostly cloudy night

68° 💧 None 💨 2 mph H 49%30.00 inHg

5:00 AM

Mostly cloudy night

68° 💧 None 💨 2 mph H 47%30.00 inHg

6:00 AM

Overcast night

68° 💧 None 💨 3 mph H 45%30.00 inHg

7:00 AM

Sunny

69° 💧 None 💨 2 mph H 46%30.03 inHg

8:00 AM

Mostly sunny

72° 💧 None 💨 2 mph H 44%30.03 inHg

9:00 AM

Overcast

79° 💧 None 💨 2 mph H 34%30.03 inHg

10:00 AM

Mostly cloudy

84° 💧 None 💨 2 mph H 29%30.03 inHg

11:00 AM

Mostly sunny

87° 💧 None 💨 1 mph H 21%30.06 inHg

12:00 PM

Partly cloudy

92° 💧 None 💨 0 mph H 16%30.03 inHg

1:00 PM

Partly cloudy

95° 💧 None 💨 1 mph H 15%30.03 inHg

2:00 PM

Mostly sunny

97° 💧 None 💨 2 mph H 16%30.00 inHg

3:00 PM

Mostly sunny

97° 💧 None 💨 5 mph H 16%30.00 inHg

4:00 PM

Partly cloudy

95° 💧 None 💨 7 mph H 15%29.97 inHg

5:00 PM

Partly cloudy

93° 💧 None 💨 8 mph H 16%29.97 inHg

6:00 PM

Partly cloudy

88° 💧 None 💨 8 mph H 20%29.97 inHg

7:00 PM

Partly cloudy

84° 💧 None 💨 7 mph H 23%29.97 inHg

8:00 PM

Mostly clear night

82° 💧 None 💨 7 mph H 24%29.97 inHg

9:00 PM

Partly cloudy night

80° 💧 None 💨 6 mph H 25%29.97 inHg

10:00 PM

Mostly clear night

79° 💧 None 💨 5 mph H 27%29.97 inHg

11:00 PM

Clear night

77° 💧 None 💨 3 mph H 30%29.97 inHg

Thursday

12:00 AM

Clear night

75° 💧 None 💨 2 mph H 34%29.97 inHg

1:00 AM

Clear night

74° 💧 None 💨 2 mph H 36%29.97 inHg

2:00 AM

Mostly clear night

72° 💧 None 💨 3 mph H 38%29.97 inHg

3:00 AM

Mostly clear night

70° 💧 None 💨 4 mph H 42%29.97 inHg

4:00 AM

Mostly clear night

69° 💧 None 💨 4 mph H 47%29.97 inHg

5:00 AM

Mostly cloudy night

68° 💧 None 💨 4 mph H 52%29.97 inHg

6:00 AM

Mostly cloudy night

68° 💧 None 💨 3 mph H 51%29.97 inHg

7:00 AM

Mostly cloudy

68° 💧 None 💨 3 mph H 54%29.97 inHg

8:00 AM

Mostly sunny

69° 💧 None 💨 3 mph H 54%30.00 inHg

9:00 AM

Sunny

74° 💧 None 💨 3 mph H 49%30.00 inHg

10:00 AM

Sunny

78° 💧 None 💨 3 mph H 43%30.00 inHg

11:00 AM

Sunny

82° 💧 None 💨 3 mph H 38%29.97 inHg

12:00 PM

Sunny

84° 💧 None 💨 4 mph H 36%29.97 inHg

1:00 PM

Sunny

86° 💧 None 💨 5 mph H 34%29.97 inHg

2:00 PM

Sunny

87° 💧 None 💨 5 mph H 30%29.94 inHg

3:00 PM

Sunny

86° 💧 None 💨 7 mph H 32%29.94 inHg

4:00 PM

Overcast

82° 💧 None 💨 8 mph H 37%29.91 inHg

5:00 PM

Mostly cloudy

78° 💧 None 💨 7 mph H 43%29.91 inHg

Friday

2:00 AM

Mostly clear night

61° 💧 None 💨 4 mph H 85%29.91 inHg

5:00 AM

Mostly clear night

59° 💧 None 💨 5 mph H 93%29.91 inHg

8:00 AM

Partly cloudy

60° 💧 None 💨 5 mph H 89%29.94 inHg

11:00 AM

Sunny

67° 💧 None 💨 7 mph H 68%29.94 inHg

2:00 PM

Sunny

73° 💧 None 💨 8 mph H 57%29.88 inHg

5:00 PM

Sunny

72° 💧 None 💨 7 mph H 55%29.85 inHg

8:00 PM

Mostly clear night

63° 💧 None 💨 6 mph H 69%29.85 inHg

11:00 PM

Clear night

62° 💧 None 💨 5 mph H 66%29.85 inHg

Saturday

2:00 AM

Mostly clear night

59° 💧 None 💨 4 mph H 78%29.88 inHg

5:00 AM

Mostly clear night

58° 💧 None 💨 5 mph H 86%29.88 inHg

8:00 AM

Sunny

59° 💧 None 💨 5 mph H 76%29.91 inHg

11:00 AM

Partly cloudy

68° 💧 None 💨 9 mph H 49%29.94 inHg

2:00 PM

Sunny

71° 💧 None 💨 14 mph H 47%29.94 inHg

5:00 PM

Overcast

68° 💧 None 💨 13 mph H 51%29.91 inHg

8:00 PM

Clear night

61° 💧 None 💨 12 mph H 74%29.91 inHg

11:00 PM

Clear night

59° 💧 None 💨 8 mph H 77%29.97 inHg

Sunday

2:00 AM

Clear night

57° 💧 None 💨 5 mph H 71%29.97 inHg

5:00 AM

Clear night

55° 💧 None 💨 5 mph H 75%29.97 inHg

8:00 AM

Sunny

55° 💧 None 💨 3 mph H 77%29.97 inHg

11:00 AM

Sunny

68° 💧 None 💨 2 mph H 45%29.97 inHg

2:00 PM

Sunny

77° 💧 None 💨 4 mph H 32%29.91 inHg

5:00 PM

Sunny

76° 💧 None 💨 8 mph H 31%29.85 inHg

8:00 PM

Mostly clear night

65° 💧 None 💨 4 mph H 54%29.85 inHg

11:00 PM

Mostly clear night

60° 💧 None 💨 3 mph H 73%29.85 inHg

Monday

5:00 AM

Mostly clear night

58° 💧 None 💨 3 mph H 76%29.88 inHg

11:00 AM

Mostly sunny

53° 💧 None 💨 2 mph H 95%29.85 inHg

5:00 PM

Sunny

68° 💧 None 💨 4 mph H 64%29.88 inHg

11:00 PM

Clear night

74° 💧 None 💨 6 mph H 48%29.80 inHg

Tuesday

5:00 AM

Clear night

57° 💧 None 💨 4 mph H 86%29.85 inHg

11:00 AM

Mostly sunny

54° 💧 None 💨 4 mph H 95%29.88 inHg

5:00 PM

Sunny

65° 💧 None 💨 4 mph H 67%29.94 inHg

11:00 PM

Clear night

67° 💧 None 💨 7 mph H 63%29.88 inHg

Wednesday

5:00 AM

Mostly clear night

57° 💧 None 💨 4 mph H 91%29.97 inHg

11:00 AM

Overcast

56° 💧 None 💨 5 mph H 90%29.97 inHg

5:00 PM

Partly cloudy

62° 💧 None 💨 6 mph H 71%30.03 inHg

11:00 PM

Clear night

64° 💧 None 💨 7 mph H 66%29.97 inHg

Thursday

5:00 AM

Mostly clear night

56° 💧 None 💨 4 mph H 90%30.00 inHg

11:00 AM

Mostly sunny

54° 💧 None 💨 3 mph H 96%30.00 inHg

5:00 PM

Mostly sunny

65° 💧 None 💨 2 mph H 67%30.03 inHg

11:00 PM

Overcast night

69° 💧 None 💨 5 mph H 48%30.00 inHg

Friday

5:00 AM

Overcast night

60° 💧 None 💨 3 mph H 75%30.03 inHg

11:00 AM

Sunny

55° 💧 None 💨 2 mph H 86%30.06 inHg

5:00 PM

Sunny

70° 💧 None 💨 2 mph H 52%30.09 inHg

11:00 PM

Clear night

76° 💧 None 💨 7 mph H 38%30.00 inHg

Saturday

5:00 AM

Clear night

59° 💧 None 💨 3 mph H 71%30.03 inHg

11:00 AM

Sunny

54° 💧 None 💨 2 mph H 84%29.97 inHg

5:00 PM

Sunny

74° 💧 None 💨 3 mph H 44%29.97 inHg

11:00 PM

Clear night

83° 💧 None 💨 4 mph H 25%29.85 inHg

Sunday

5:00 AM

Clear night

59° 💧 None 💨 3 mph H 70%29.83 inHg

11:00 AM

Sunny

54° 💧 None 💨 1 mph H 94%29.83 inHg

5:00 PM

Sunny

68° 💧 None 💨 4 mph H 59%29.83 inHg

11:00 PM

Clear night

68° 💧 None 💨 8 mph H 59%29.77 inHg

Monday

5:00 AM

Mostly cloudy night

57° 💧 None 💨 6 mph H 92%29.83 inHg

11:00 AM

Overcast

56° 💧 None 💨 4 mph H 97%29.85 inHg

5:00 PM

Mostly sunny

64° 💧 None 💨 4 mph H 71%29.94 inHg

11:00 PM

Clear night

68° 💧 None 💨 7 mph H 58%29.94 inHg

Tuesday

5:00 AM

Clear night

58° 💧 None 💨 4 mph H 91%30.00 inHg

11:00 AM

Partly cloudy

55° 💧 None 💨 3 mph H 97%30.00 inHg

5:00 PM

Partly cloudy

70° 💧 None 💨 3 mph H 61%30.03 inHg

11:00 PM

Mostly cloudy night

82° 💧 None 💨 5 mph H 30%29.91 inHg

In San Anselmo and, more broadly, across the state of California: This morning will start with a mix of sun and clouds, leading to very hot conditions as temperatures rise into the high 90s. Expect the heat to continue into the afternoon, with temperatures remaining in the upper 80s to near 98 degrees. Winds will be moderate from the northwest, reaching up to 11 mph, with gusts up to 23 mph, providing some relief from the heat. No precipitation is expected today, so outdoor plans can go ahead without worry of rain. Remember to stay hydrated and wear appropriate sun protection during this hot and breezy day.

15-Day Weather Outlook for San Anselmo

TomorrowTomorrow

Overcast 97°/68° 💧 None 💨 7 mph

Thursday, Sep 10Thu Sep 10

Partly cloudy 93°/68° 💧 None 💨 8 mph

Friday, Sep 11Fri Sep 11

Mostly cloudy 78°/58° 💧 None 💨 8 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 72°/58° 💧 None 💨 12 mph

Sunday, Sep 13Sun Sep 13

Partly cloudy 75°/54° 💧 None 💨 11 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 72°/53° 💧 None 💨 7 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 74°/54° 💧 None 💨 6 mph

Wednesday, Sep 16Wed Sep 16

Overcast 67°/56° 💧 0.001 in 💨 7 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 65°/54° 💧 None 💨 7 mph

Friday, Sep 18Fri Sep 18

Overcast 70°/55° 💧 None 💨 5 mph

Saturday, Sep 19Sat Sep 19

Sunny 76°/54° 💧 None 💨 7 mph

Sunday, Sep 20Sun Sep 20

Sunny 83°/54° 💧 None 💨 4 mph

Monday, Sep 21Mon Sep 21

Overcast 68°/56° 💧 0.001 in 💨 8 mph

Tuesday, Sep 22Tue Sep 22

Partly cloudy 70°/55° 💧 None 💨 7 mph

Wednesday, Sep 23Wed Sep 23

Mostly cloudy 82°/82° 💧 None 💨 5 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in San Anselmo

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for San Anselmo

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 9:00 AM

PM2.5 Fine particles Good 6,9µg/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 17,4µg/m³

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

O₃ Ozone Fair 71,8µg/m³

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

NO₂ Nitrogen dioxide Good 1,9µg/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 San Anselmo

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 7,6High 🙂Fair

Tomorrow UV 8,1Very high 🙂Fair

Thursday UV 8,4Very high 🙂Fair

Friday UV 7,8High 😐Moderate

Saturday UV 5,0Moderate 🙂Fair

Sunday UV 6,0High —Unavailable

Monday UV 6,0High —Unavailable

Hourly UV index today

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

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

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

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.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for San Anselmo

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SAN ANSELMO, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

37/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 88% Real hourly forecast for the best viewing hour.

☾ Moonlight 6% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 87° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

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

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Forecast data for San Anselmo were last refreshed today at 8:14 AM. The current forecast period extends through 10/09/2026 at 6:00 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.