San Geronimo, CA Current Weather Conditions

Current weather observations and 72-hour history for San Geronimo, CA. • View 5-Day Forecast ›

▼Current Conditions — San Geronimo, CA

PETALUMA (KO69)

Clear

82.4 F

Humidity:	28%
Wind Speed:	SW 6.9 mph
Barometer:	29.99 in
Dewpoint:	46.4 F
Visibility:	10.00 mi
Precip:	--
Heat Index:	80.6 F
Wind Chill:	NA

Aug 26 2026, 12:35 PM PDT

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▼Hourly Observation History — San Geronimo, CA

Time	Wind (mph)	Vis (mi)	Weather	Precip (in)	Temperature (F)		Relative Humidity	Wind Chill (F)	Heat Index (F)	Pressure
Time	Wind (mph)	Vis (mi)	Weather	Precip (in)	Air	Dwpt	Relative Humidity	Wind Chill (F)	Heat Index (F)	altimeter (in)	sea level (mb)
12:35 PM PDT	SW 6.9	10.00	Clear	--	82.4	46.4	28%	NA	80.6	29.99	1015.6
12:15 PM PDT	0.0	10.00	Clear	--	80.6	50.0	34%	NA	80.1	30.00	1015.9
11:50 AM PDT	4.7	10.00	Clear	--	77.0	50.0	39%	NA	76.3	30.01	1016.3
11:35 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
11:10 AM PDT	0.0	10.00	Clear	--	69.8	51.8	53%	NA	NA	30.02	1016.6
10:50 AM PDT	0.0	10.00	Clear	--	66.2	51.8	60%	NA	NA	30.03	1016.9
10:35 AM PDT	0.0	10.00	Clear	--	64.4	53.6	68%	NA	NA	30.03	1016.9
10:15 AM PDT	0.0	10.00	Clear	--	62.6	53.6	72%	NA	NA	30.03	1016.9
09:55 AM PDT	0.0	10.00	Mostly Clear	--	59.0	55.4	88%	NA	NA	30.03	1016.9
09:35 AM PDT	4.7	10.00	Mostly Cloudy	--	57.2	55.4	94%	NA	NA	30.03	1016.9
09:15 AM PDT	0.0	9.00	NULL	--	55.4	55.4	100%	NA	NA	30.04	1017.3
08:50 AM PDT	3.4	6.00	Fog/Mist	--	53.6	53.6	100%	NA	NA	30.04	1017.3
08:30 AM PDT	3.4	0.50	Fog/Mist	--	53.6	53.6	100%	NA	NA	30.04	1017.3
08:15 AM PDT	0.0	0.25	Fog	--	51.8	51.8	100%	NA	NA	30.03	1016.9
07:50 AM PDT	0.0	0.25	Fog	--	51.8	51.8	100%	NA	NA	30.03	1016.9
07:35 AM PDT	0.0	0.25	Fog	--	51.8	51.8	100%	NA	NA	30.02	1016.6
07:15 AM PDT	0.0	0.25	NULL	--	51.8	51.8	100%	NA	NA	30.02	1016.6
06:50 AM PDT	0.0	0.50	Fog	--	51.8	51.8	100%	NA	NA	30.01	1016.3
06:35 AM PDT	0.0	0.25	Fog	--	51.8	51.8	100%	NA	NA	30.01	1016.3
06:15 AM PDT	W 3.4	0.50	Fog	--	51.8	51.8	100%	NA	NA	30.01	1016.3
05:50 AM PDT	3.4	0.50	Fog	--	51.8	51.8	100%	NA	NA	30.01	1016.3
05:35 AM PDT	4.7	3.00	Fog/Mist	--	53.6	53.6	100%	NA	NA	30.00	1015.9
05:15 AM PDT	0.0	2.50	Fog/Mist	--	51.8	51.8	100%	NA	NA	30.01	1016.3
04:50 AM PDT	0.0	2.00	Fog/Mist	--	51.8	51.8	100%	NA	NA	30.01	1016.3
04:30 AM PDT	0.0	7.00	Cloudy	--	53.6	53.6	100%	NA	NA	30.01	1016.3
04:15 AM PDT	0.0	6.00	Fog/Mist	--	53.6	53.6	100%	NA	NA	30.02	1016.6
03:50 AM PDT	0.0	5.00	Fog/Mist	--	53.6	53.6	100%	NA	NA	30.02	1016.6
03:35 AM PDT	0.0	3.00	Fog/Mist	--	53.6	53.6	100%	NA	NA	30.02	1016.6
03:15 AM PDT	0.0	5.00	Fog/Mist	--	53.6	53.6	100%	NA	NA	30.01	1016.3
02:50 AM PDT	5.8	6.00	Fog/Mist	--	53.6	53.6	100%	NA	NA	30.01	1016.3
02:35 AM PDT	0.0	7.00	Cloudy	--	53.6	53.6	100%	NA	NA	30.01	1016.3
02:10 AM PDT	4.7	5.00	Fog/Mist	--	51.8	51.8	100%	NA	NA	30.01	1016.3
01:50 AM PDT	4.7	8.00	Cloudy	--	51.8	51.8	100%	NA	NA	30.02	1016.6
01:35 AM PDT	3.4	5.00	Fog/Mist	--	51.8	51.8	100%	NA	NA	30.02	1016.6
01:10 AM PDT	0.0	3.00	Fog/Mist	--	51.8	51.8	100%	NA	NA	30.02	1016.6
12:50 AM PDT	5.8	10.00	Cloudy	--	51.8	51.8	100%	NA	NA	30.02	1016.6
12:35 AM PDT	4.7	10.00	Mostly Cloudy	--	53.6	53.6	100%	NA	NA	30.02	1016.6
12:10 AM PDT	4.7	10.00	Mostly Clear	--	53.6	53.6	100%	NA	NA	30.02	1016.6
11:55 PM PDT	4.7	10.00	Clear	--	53.6	53.6	100%	NA	NA	30.02	1016.6
11:35 PM PDT		10.00	Partly Cloudy	--	NULL		%	NA	NA		M
11:10 PM PDT	0.0	10.00	Mostly Clear	--	53.6	53.6	100%	NA	NA	30.02	1016.6
10:55 PM PDT	3.4	9.00	Mostly Clear	--	53.6	53.6	100%	NA	NA	30.02	1016.6
10:35 PM PDT	4.7	10.00	Clear	--	53.6	53.6	100%	NA	NA	30.02	1016.6
10:15 PM PDT	4.7	10.00	Clear	--	55.4	53.6	94%	NA	NA	30.02	1016.6
09:55 PM PDT	4.7	10.00	Mostly Clear	--	55.4	53.6	94%	NA	NA	30.03	1016.9
09:35 PM PDT	3.4	10.00	Clear	--	55.4	55.4	100%	NA	NA	30.03	1016.9
09:10 PM PDT	5.8	10.00	Clear	--	55.4	55.4	100%	NA	NA	30.02	1016.6
08:55 PM PDT	0.0	10.00	Clear	--	57.2	55.4	94%	NA	NA	30.02	1016.6
08:35 PM PDT	4.7	10.00	Clear	--	57.2	55.4	94%	NA	NA	30.02	1016.6
08:10 PM PDT	9.2	10.00	NULL	--	59.0	55.4	88%	NA	NA	30.01	1016.3
07:55 PM PDT	5.8 G 13.9	10.00	Clear	--	NULL	55.4	%	NA	NA	30.01	1016.3
07:35 PM PDT	5.8	10.00	Clear	--	62.6	53.6	72%	NA	NA	30.01	1016.3
07:10 PM PDT	9.2	10.00	Clear	--	64.4	53.6	68%	NA	NA	30.00	1015.9
06:55 PM PDT	W 12.8	10.00	Clear	--	66.2	53.6	64%	NA	NA	30.00	1015.9
06:30 PM PDT	5.8 G 12.8	10.00	Clear	--	68.0	53.6	60%	NA	NA	30.00	1015.9
06:10 PM PDT	W 11.4	10.00	Clear	--	69.8	51.8	53%	NA	NA	30.00	1015.9
05:55 PM PDT	9.2	10.00	Clear	--	69.8	53.6	56%	NA	NA	30.00	1015.9
05:35 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
05:10 PM PDT	W 11.4	10.00	Clear	--	73.4	53.6	50%	NA	72.9	30.00	1015.9
04:50 PM PDT	8.1 G 15.0	10.00	Clear	--	75.2	53.6	47%	NA	74.7	30.00	1015.9
04:35 PM PDT	8.1	10.00	Clear	--	75.2	53.6	47%	NA	74.7	30.00	1015.9
04:10 PM PDT	6.9 G 15.0	10.00	Clear	--	75.2	53.6	47%	NA	74.7	30.01	1016.3
03:50 PM PDT	11.4	10.00	Clear	--	77.0	51.8	41%	NA	76.3	30.01	1016.3
03:35 PM PDT	9.2 G 17.2	10.00	Clear	--	75.2	51.8	44%	NA	74.5	30.02	1016.6
03:15 PM PDT	6.9 G 13.9	10.00	Clear	--	77.0	51.8	41%	NA	76.3	30.02	1016.6
02:50 PM PDT	W 11.4	10.00	Clear	--	78.8	51.8	39%	NA	78.3	30.02	1016.6
02:30 PM PDT	11.4	10.00	Clear	--	78.8	51.8	39%	NA	78.3	30.02	1016.6
02:15 PM PDT	8.1	10.00	NULL	--	78.8	50.0	37%	NA	78.1	30.03	1016.9
01:50 PM PDT	W 10.3	10.00	Clear	--	78.8	51.8	39%	NA	78.3	30.03	1016.9
01:35 PM PDT	5.8 G 12.8	10.00	Clear	--	78.8	50.0	37%	NA	78.1	30.03	1016.9
01:15 PM PDT	W 11.4	10.00	Clear	--	78.8	51.8	39%	NA	78.3	30.03	1016.9
12:50 PM PDT	W 9.2	10.00	Clear	--	77.0	53.6	44%	NA	76.5	30.04	1017.3