Observed 4:55 PM PDT at KDVO

San Geronimo, CA weather

Sunny and 75°24°, jacket by 8 PM.

Forecasts differ

Now 75°24°

Sunny

Wind: 11 mph18 km/h; From the southwest. Up to 11 mph18 km/h through 5 AM
Dew point: 41°5°; Comfortable
UV tomorrow: 4Moderate; Moderate 11 AM–5 PM · peak 4
Air quality: 32Good; Main pollutant: Ozone
Pressure: 29.97 inHg1015 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below 60°16° tonight after 7 PM
Low 47°8° tomorrow at 6 AM
Above 60°16° tomorrow by 11 AM

TonightDown to 48°9° by 4 AM · Clear
Tomorrow morningUp to 60°16° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 66°19° by 2 PM · Mostly cloudy
Tomorrow nightDown to 48°9° by 5 AM · Partly cloudy
Monday morningUp to 58°14° by 11 AM · Partly cloudy
Monday afternoonNear 60°16° · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 5p	Sunny	67°19° (likely 63°17° to 68°20°)	67°19°	0%	6 mph10 km/h from W, gusts 8 mph13 km/h	47%	0%	2
Sat 6p	Clear	61°16° (likely 59°15° to 64°18°)	61°16°	0%	5 mph8 km/h from W, gusts 7 mph12 km/h	58%	0%	1
Sat 7p	Clear	56°13° (likely 55°13° to 58°14°)	56°13°	0%	2 mph3 km/h from W, gusts 7 mph11 km/h	69%	0%	0
Sat 8p	Clear	54°12° (likely 52°11° to 55°13°)	54°12°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	77%	0%	0
Sat 9p	Clear	52°11° (likely 50°10° to 54°12°)	52°11°	0%	1 mph2 km/h from W, gusts 3 mph6 km/h	77%	1%	0
Sat 10p	Clear	51°11° (likely 49°9° to 53°12°)	51°11°	0%	1 mph2 km/h from WSW, gusts 4 mph6 km/h	76%	3%	0
Sat 11p	Clear	51°11° (likely 48°9° to 53°12°)	51°11°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	75%	3%	0
Sun 12a	Clear	50°10° (likely 47°8° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 3 mph6 km/h	72%	3%	0
Sun 1a	Clear	50°10° (likely 47°8° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 3 mph5 km/h	70%	1%	0
Sun 2a	Clear	50°10° (likely 47°8° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 3 mph5 km/h	69%	0%	0
Sun 3a	Clear	49°9° (likely 48°9° to 53°12°)	49°9°	0%	0 mph0 km/h, gusts 3 mph4 km/h	68%	6%	0
Sun 4a	Partly cloudy	48°9° (likely 47°8° to 53°12°)	48°9°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	67%	42%	0
Sun 5a	Partly cloudy	48°9° (likely 47°8° to 52°11°)	48°9°	0%	1 mph2 km/h from SSW, gusts 3 mph5 km/h	68%	52%	0
Sun 6a	Partly cloudy	47°8° (likely 45°7° to 51°11°)	47°8°	0%	1 mph2 km/h from SSW, gusts 2 mph4 km/h	67%	64%	0
Sun 7a	Partly sunny	48°9° (likely 44°7° to 49°9°)	48°9°	0%	2 mph3 km/h from S, gusts 3 mph4 km/h	69%	68%	0
Sun 8a	Partly sunny	48°9° (likely 44°7° to 50°10°)	48°9°	0%	2 mph3 km/h from S, gusts 2 mph4 km/h	72%	72%	0
Sun 9a	Partly sunny	51°11° (likely 48°9° to 55°13°)	51°11°	0%	2 mph3 km/h from SSE, gusts 3 mph5 km/h	73%	75%	1
Sun 10a	Cloudy	55°13° (likely 55°13° to 60°16°)	55°13°	0%	2 mph3 km/h from SE, gusts 5 mph7 km/h	70%	75%	2
Sun 11a	Cloudy	60°16° (likely 59°15° to 64°18°)	60°16°	0%	2 mph3 km/h from SSE, gusts 7 mph11 km/h	62%	74%	3
Sun 12p	Mostly cloudy	62°17° (likely 62°17° to 68°20°)	62°17°	0%	3 mph5 km/h from S, gusts 6 mph10 km/h	57%	59%	3
Sun 1p	Partly sunny	64°18° (likely 64°18° to 69°21°)	64°18°	0%	3 mph5 km/h from SSW, gusts 5 mph8 km/h	54%	80%	4
Sun 2p	Cloudy	66°19° (likely 66°19° to 69°21°)	66°19°	0%	3 mph5 km/h from SW, gusts 7 mph11 km/h	52%	82%	4
Sun 3p	Cloudy	65°18° (likely 65°18° to 67°19°)	65°18°	0%	5 mph8 km/h from WSW, gusts 8 mph13 km/h	54%	85%	3
Sun 4p	Cloudy	64°18° (likely 64°18° to 65°18°)	64°18°	0%	5 mph8 km/h from WSW, gusts 8 mph13 km/h	57%	88%	3
Sun 5p	Cloudy	64°18° (likely 61°16° to 64°18°)	64°18°	0%	5 mph8 km/h from WSW, gusts 8 mph13 km/h	57%	91%	1
Sun 6p	Cloudy	59°15° (likely 57°14° to 59°15°)	59°15°	0%	2 mph3 km/h from W, gusts 8 mph13 km/h	66%	95%	0
Sun 7p	Cloudy	55°13° (likely 54°12° to 56°13°)	55°13°	0%	2 mph3 km/h from W, gusts 10 mph17 km/h	77%	94%	0
Sun 8p	Cloudy	53°12° (likely 52°11° to 55°13°)	53°12°	0%	2 mph3 km/h from W, gusts 12 mph19 km/h	84%	94%	0
Sun 9p	Partly cloudy	52°11° (likely 50°10° to 54°12°)	52°11°	0%	2 mph3 km/h from W, gusts 10 mph17 km/h	86%	31%	0
Sun 10p	Mostly clear	51°11° (likely 48°9° to 53°12°)	51°11°	0%	2 mph3 km/h from W, gusts 10 mph17 km/h	86%	21%	0
Sun 11p	Clear	50°10° (likely 48°9° to 52°11°)	51°11°	0%	2 mph3 km/h from W, gusts 11 mph18 km/h	86%	15%	0
Mon 12a	Clear	50°10° (likely 48°9° to 52°11°)	51°11°	0%	2 mph3 km/h from W, gusts 12 mph19 km/h	83%	15%	0
Mon 1a	Clear	50°10° (likely 48°9° to 52°11°)	50°10°	0%	2 mph3 km/h from W, gusts 13 mph21 km/h	82%	20%	0
Mon 2a	Clear	50°10° (likely 48°9° to 52°11°)	48°9°	0%	5 mph8 km/h from W, gusts 15 mph23 km/h	81%	21%	0
Mon 3a	Clear	50°10° (likely 48°9° to 52°11°)	48°9°	0%	5 mph8 km/h from W, gusts 16 mph25 km/h	81%	19%	0
Mon 4a	Clear	49°9° (likely 47°8° to 52°11°)	48°9°	0%	5 mph8 km/h from W, gusts 17 mph27 km/h	80%	21%	0
Mon 5a	Clear	48°9° (likely 46°8° to 51°11°)	46°8°	0%	5 mph8 km/h from WNW, gusts 16 mph26 km/h	80%	19%	0
Mon 6a	Clear	50°10° (likely 46°8° to 51°11°)	48°9°	0%	5 mph8 km/h from WNW, gusts 13 mph21 km/h	78%	16%	0
Mon 7a	Mostly cloudy	50°10° (likely 47°8° to 51°11°)	48°9°	0%	5 mph8 km/h from WNW, gusts 16 mph25 km/h	81%	42%	0
Mon 8a	Mostly sunny	50°10° (likely 48°9° to 52°11°)	48°9°	0%	5 mph8 km/h from WNW, gusts 13 mph21 km/h	84%	29%	0
Mon 9a	Mostly sunny	52°11° (likely 51°11° to 55°13°)	52°11°	0%	5 mph8 km/h from WNW, gusts 15 mph24 km/h	82%	29%	1
Mon 10a	Partly sunny	55°13° (likely 55°13° to 58°14°)	55°13°	0%	5 mph8 km/h from WNW, gusts 15 mph25 km/h	79%	37%	2
Mon 11a	Mostly sunny	58°14° (likely 58°14° to 61°16°)	59°15°	5%	7 mph11 km/h from W, gusts 16 mph26 km/h	75%	39%	3
Mon 12p	Mostly sunny	60°16° (likely 60°16° to 63°17°)	60°16°	5%	7 mph11 km/h from W, gusts 16 mph26 km/h	71%	20%	4
Mon 1p	Mostly sunny	61°16° (likely 61°16° to 64°18°)	61°16°	5%	7 mph11 km/h from W, gusts 17 mph27 km/h	68%	27%	5
Mon 2p	Mostly sunny	61°16° (likely 60°16° to 63°17°)	61°16°	5%	9 mph14 km/h from W, gusts 17 mph28 km/h	66%	32%	5
Mon 3p	Mostly sunny	61°16° (likely 60°16° to 62°17°)	61°16°	5%	9 mph14 km/h from W, gusts 18 mph29 km/h	65%	15%	4
Mon 4p	Mostly sunny	60°16° (likely 60°16° to 61°16°)	60°16°	5%	9 mph14 km/h from W, gusts 19 mph31 km/h	66%	12%	3

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Sunny. High 71°22°, low 46°8°. Typical 73°23° / 50°10°. Dry. Forecasts differ.
1. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Official NWS forecast
Today: Sunny. High near 71, with temperatures falling to around 67 in the afternoon. West wind around 6 mph.
Tonight: Mostly clear. Low around 46, with temperatures rising to around 48 overnight. West southwest wind 0 to 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
69°21°–76°24°
Low, likely
45°7°–49°9°
Typical high / low
73°23° / 50°10°
Wind
7 mph11 km/h, gusts 18 mph29 km/h
UV peak
5
Tomorrow, Oct 25. Cloudy. High 67°19°, low 47°8°. Typical 72°22° / 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Official NWS forecast
Day: Partly sunny. High near 67, with temperatures falling to around 64 in the afternoon. South wind 1 to 5 mph.
Night: Partly cloudy, with a low around 47. West wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–69°21°
Low, likely
44°7°–49°9°
Typical high / low
72°22° / 50°10°
Wind
7 mph11 km/h, gusts 16 mph26 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 62°17°, low 45°7°. Typical 72°22° / 50°10°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 46°8°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 62. West northwest wind 5 to 9 mph, with gusts as high as 20 mph.
Night: Mostly clear, with a low around 45.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–63°17°
Low, likely
45°7°–51°11°
Typical high / low
72°22° / 50°10°
Wind
12 mph19 km/h, gusts 27 mph44 km/h
UV peak
5
Tuesday, Oct 27. Mostly sunny. High 62°17°, low 46°8°. Typical 72°22° / 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 62.
Night: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–64°18°
Low, likely
44°7°–47°8°
Typical high / low
72°22° / 50°10°
Wind
9 mph14 km/h, gusts 22 mph36 km/h
UV peak
4
Wednesday, Oct 28. Mostly cloudy. High 60°16°, low 48°9°. Typical 71°22° / 50°10°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 62°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 60.
Night: Mostly cloudy, with a low around 48.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–65°18°
Low, likely
42°6°–49°9°
Typical high / low
71°22° / 50°10°
Wind
11 mph17 km/h, gusts 17 mph28 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 58°14°, low 46°8°. Typical 71°22° / 49°9°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 58.
Night: A slight chance of rain after 5am. Partly cloudy, with a low around 46.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–64°18°
Low, likely
46°8°–51°11°
Typical high / low
71°22° / 49°9°
Wind
13 mph21 km/h, gusts 33 mph53 km/h
UV peak
4
Friday, Oct 30. Rain. High 58°14°, low 45°7°. Typical 71°22° / 49°9°. Rain 0.01 in0.3 mm, 20% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 58°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain. Mostly sunny, with a high near 58.
Night: A slight chance of rain. Partly cloudy, with a low around 45.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
58°14°–59°15°
Low, likely
41°5°–47°8°
Typical high / low
71°22° / 49°9°
Wind
15 mph23 km/h, gusts 30 mph48 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 57°14°, low 44°7°. Typical 70°21° / 49°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
56°13°–58°14°
Low, likely
39°4°–47°8°
Typical high / low
70°21° / 49°9°
Wind
11 mph17 km/h, gusts 27 mph43 km/h
UV peak
4
Sunday, Nov 1. Sunny. High 60°16°, low 44°7°. Typical 70°21° / 49°9°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 46°8°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–64°18°
Low, likely
40°4°–46°8°
Typical high / low
70°21° / 49°9°
Wind
10 mph16 km/h, gusts 25 mph41 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 59°15°, low 45°7°. Typical 70°21° / 49°9°. Rain 0.03 in0.8 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°14°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 50°10°
  20% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
54°12°–63°17°
Low, likely
41°5°–48°9°
Typical high / low
70°21° / 49°9°
Wind
8 mph12 km/h, gusts 21 mph33 km/h
UV peak
4

10 days15 days30 days

The outlook

Today
Dry, high 71°, low 46°.
Tomorrow
Dry, high 67°, low 47°, cooling off.
Monday
Dry, high 62°, low 45°, cooling off.
Rest of week
Mostly dry, highs 57–62°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (MTR) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Fairfax Creek at Sunnyside

2.9 mi

Level: 0.1 ft

Reading from Sat 12:05 PM · NWS gauge page

Lagunitas Creek at Samuel P. Taylor State Park

4.2 mi

Level: 1.7 ft
Flow: 11 cfs

Reading from Sat 3:45 PM · NWS gauge page

Fairfax Creek at RVFD Station 21

4.2 mi

Below flood stage

Level: 0.5 ft

Reading from Sat 11:50 AM · NWS gauge page

Sleepy Hollow Creek at RVFD Fire Station 20

4.9 mi

Below flood stage

Level: 2.0 ft

Reading from Sat 12:30 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 30% less heating than a typical week.

This week 21Typical 30

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 1
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at.

Comfort

Dry air outside (dew point 41°F).

Open the windows?

Sun, 11:00 AM–5:00 PM

Good stretch to open the windows.

Is this typical?

SAN RAFAEL-CIVIC CENTER · official normals 1991–2020 · records 1894–2026

Oct 24, today vs a typical year

Today’s expected high is 2°1° colder than typical.

Last 7 days vs normal

On average 2°1° colder than normal (daily mean temperature).

−2°−1°MonOct 19
−3°−2°TueOct 20
−1°WedOct 21
−4°−2°ThuOct 22
+2°+1°FriOct 23
—SatOct 24
—SunOct 25

San Geronimo weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 52 min; Losing 2 min 21 s a day; shortest Dec 21, 1 h 21 min less
Golden hour: 5:44–6:37 PM; Morning 7:11–8:04 AM
Blue hour: 6:37–6:47 PM; Morning 7:01–7:11 AM; first light 7:01 AM

Stars tonight? Fair

Mostly clear 6:47 PM–4 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:49 AM · rises 5:20 PM
Full moon: Oct 25
New moon: Nov 8

Looking southeast from San Geronimo. The highest point on the skyline is about 1,400 ft, 1 mi away.Skyline from USGS elevation data, heights drawn up to 2× taller. Sky, sun and moon as they are now.