St. Helena, CA Current Weather Conditions

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

▼Current Conditions — St. Helena, CA

SANTA ROSA (KSTS)

Fog

46.4 F

Humidity:	100%
Wind Speed:	0.0 mph
Barometer:	30.05 in
Dewpoint:	46.4 F
Visibility:	0.25 mi
Precip:	--
Heat Index:	NA
Wind Chill:	NA

Oct 23 2026, 06:30 AM PDT

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▼Hourly Observation History — St. Helena, 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)
06:30 AM PDT	0.0	0.25	Fog	--	46.4	46.4	100%	NA	NA	30.05	1017.6
06:15 AM PDT	0.0	0.24	Fog	--	46.4	46.4	100%	NA	NA	30.04	1017.3
06:00 AM PDT	0.0	0.50	Fog	--	46.4	46.4	100%	NA	NA	30.04	1017.3
05:45 AM PDT	0.0	0.75	Fog/Mist	--	46.4	46.4	100%	NA	NA	30.03	1016.9
05:35 AM PDT	0.0	0.50	Fog	--	46.4	46.4	100%	NA	NA	30.03	1016.9
05:25 AM PDT	0.0	0.50	Fog	--	46.4	46.4	100%	NA	NA	30.03	1016.9
05:10 AM PDT	0.0	0.24	Fog	--	48.2	48.2	100%	NA	NA	30.02	1016.6
05:05 AM PDT	0.0	0.24	Fog	--	48.2	48.2	100%	NA	NA	30.02	1016.6
04:55 AM PDT	0.0	0.24	Fog	--	48.2	48.2	100%	NA	NA	30.02	1016.6
04:45 AM PDT	0.0	0.24	Fog	--	48.2	48.2	100%	NA	NA	30.02	1016.6
04:40 AM PDT	0.0	0.24	Fog	--	48.2	48.2	100%	NA	NA	30.02	1016.6
04:25 AM PDT	0.0	0.24	Fog	--	48.2	48.2	100%	NA	NA	30.01	1016.3
04:15 AM PDT	0.0	0.24	Fog	--	50.0	50.0	100%	NA	NA	30.01	1016.3
03:53 AM PDT	0.0	0.25	Fog	--	50.0	50.0	100%	NA	NA	30.01	1016.3
03:30 AM PDT	0.0	0.25	Fog	--	50.0	50.0	100%	NA	NA	30.01	1016.3
03:05 AM PDT	3.4	0.25	Fog	--	50.0	50.0	100%	NA	NA	30.01	1016.3
02:55 AM PDT	0.0	0.50	Fog	--	50.0	50.0	100%	NA	NA	30.00	1015.9
02:50 AM PDT	0.0	0.50	Fog	--	50.0	50.0	100%	NA	NA	30.00	1015.9
02:45 AM PDT	0.0	0.25	Fog	--	51.8	50.0	94%	NA	NA	30.00	1015.9
02:35 AM PDT	W 3.4	0.24	Fog	--	51.8	51.8	100%	NA	NA	30.00	1015.9
02:30 AM PDT	0.0	0.24	Fog	--	51.8	51.8	100%	NA	NA	30.00	1015.9
02:20 AM PDT	W 3.4	0.24	Fog	--	51.8	51.8	100%	NA	NA	30.00	1015.9
02:15 AM PDT	3.4	0.24	Fog	--	51.8	51.8	100%	NA	NA	30.00	1015.9
02:10 AM PDT	0.0	0.24	Fog	--	51.8	51.8	100%	NA	NA	30.00	1015.9
02:00 AM PDT	0.0	0.24	Fog	--	51.8	51.8	100%	NA	NA	30.00	1015.9
01:50 AM PDT	0.0	0.24	Fog	--	51.8	51.8	100%	NA	NA	29.99	1015.6
01:45 AM PDT	NW 3.4	0.24	Fog	--	51.8	51.8	100%	NA	NA	29.99	1015.6
01:15 AM PDT	0.0	0.25	Fog	--	51.8	51.8	100%	NA	NA	29.99	1015.6
12:53 AM PDT	0.0	0.25	Fog	--	52.0	52.0	100%	NA	NA	29.98	1015.2
12:40 AM PDT	W 3.4	0.50	Fog	--	51.8	51.8	100%	NA	NA	29.99	1015.6
12:35 AM PDT	W 3.4	0.50	Fog	--	51.8	51.8	100%	NA	NA	29.99	1015.6
12:30 AM PDT	0.0	0.50	Fog	--	51.8	51.8	100%	NA	NA	29.98	1015.2
12:10 AM PDT	0.0	0.25	Fog	--	51.8	51.8	100%	NA	NA	29.98	1015.2
11:53 PM PDT	3.4	0.25	Fog	--	52.0	52.0	100%	NA	NA	29.98	1015.2
11:50 PM PDT	E 3.4	0.24	Fog	--	51.8	51.8	100%	NA	NA	29.98	1015.2
11:25 PM PDT	3.4	0.50	Fog	--	51.8	51.8	100%	NA	NA	29.97	1014.9
11:15 PM PDT	0.0	0.50	Fog	--	53.6	51.8	94%	NA	NA	29.97	1014.9
11:10 PM PDT	0.0	0.50	Fog	--	53.6	53.6	100%	NA	NA	29.97	1014.9
11:00 PM PDT	0.0	0.50	Fog	--	53.6	51.8	94%	NA	NA	29.97	1014.9
10:55 PM PDT	0.0	0.75	Fog/Mist	--	53.6	51.8	94%	NA	NA	29.97	1014.9
10:50 PM PDT	S 3.4	1.00	Fog/Mist	--	53.6	51.8	94%	NA	NA	29.97	1014.9
10:45 PM PDT	3.4	0.50	Fog	--	51.8	51.8	100%	NA	NA	29.97	1014.9
10:36 PM PDT	S 3.4	1.25	Fog/Mist	--	53.1	53.1	100%	NA	NA	29.96	1014.6
10:30 PM PDT	0.0	0.50	Fog	--	53.6	53.6	100%	NA	NA	29.96	1014.6
10:13 PM PDT	3.4	0.75	Fog/Mist	--	52.0	52.0	100%	NA	NA	29.95	1014.2
10:09 PM PDT	0.0	1.50	Fog/Mist	--	53.1	53.1	100%	NA	NA	29.95	1014.2
09:55 PM PDT	0.0	3.50	Fog/Mist	--	53.6	53.6	100%	NA	NA	29.95	1014.2
09:50 PM PDT	0.0	1.25	Fog/Mist	--	53.6	53.6	100%	NA	NA	29.95	1014.2
09:45 PM PDT	0.0	0.75	Fog/Mist	--	53.6	53.6	100%	NA	NA	29.95	1014.2
09:40 PM PDT	0.0	0.75	Fog/Mist	--	53.6	53.6	100%	NA	NA	29.95	1014.2
09:27 PM PDT	0.0	2.50	Fog/Mist	--	55.0	54.0	96%	NA	NA	29.94	1013.9
09:10 PM PDT	0.0	8.00	Clear	--	53.6	53.6	100%	NA	NA	29.94	1013.9
09:00 PM PDT	0.0	9.00	Mostly Clear	--	55.4	55.4	100%	NA	NA	29.94	1013.9
08:55 PM PDT	0.0	8.00	Mostly Clear	--	55.4	55.4	100%	NA	NA	29.93	1013.5
08:40 PM PDT	3.4	1.50	Fog/Mist	--	53.6	53.6	100%	NA	NA	29.94	1013.9
08:30 PM PDT	4.6	2.00	Fog/Mist	--	55.4	53.6	94%	NA	NA	29.93	1013.5
08:15 PM PDT	0.0	9.00	Partly Cloudy	--	57.2	55.4	94%	NA	NA	29.92	1013.2
08:00 PM PDT	0.0	10.00	Cloudy	--	57.2	55.4	94%	NA	NA	29.92	1013.2
07:50 PM PDT	0.0	10.00	Mostly Cloudy	--	57.2	55.4	94%	NA	NA	29.93	1013.5
07:45 PM PDT	0.0	10.00	Mostly Cloudy	--	57.2	55.4	94%	NA	NA	29.92	1013.2
07:40 PM PDT	0.0	10.00	Partly Cloudy	--	57.2	55.4	94%	NA	NA	29.92	1013.2
07:20 PM PDT	3.4	10.00	Clear	--	57.2	55.4	94%	NA	NA	29.92	1013.2
06:55 PM PDT	0.0	10.00	Mostly Clear	--	57.2	57.2	100%	NA	NA	29.91	1012.9
06:50 PM PDT	0.0	10.00	Mostly Cloudy	--	57.2	57.2	100%	NA	NA	29.91	1012.9
06:36 PM PDT	0.0	10.00	Mostly Cloudy	--	59.0	57.0	93%	NA	NA	29.91	1012.9
06:35 PM PDT	0.0	10.00	Mostly Cloudy	--	59.0	57.2	94%	NA	NA	29.91	1012.9
06:20 PM PDT	0.0	10.00	Cloudy	--	59.0	57.2	94%	NA	NA	29.90	1012.5
05:53 PM PDT	0.0	10.00	Cloudy	00.01	59.0	57.0	93%	NA	NA	29.90	1012.5
05:50 PM PDT	0.0	10.00	Cloudy	--	59.0	57.2	94%	NA	NA	29.90	1012.5
05:45 PM PDT	0.0	10.00	Mostly Cloudy	--	59.0	57.2	94%	NA	NA	29.90	1012.5
05:29 PM PDT	0.0	10.00	Light Rain	00.01	59.0	57.0	93%	NA	NA	29.90	1012.5
05:25 PM PDT	SW 3.4	1.50	Light Rain and Fog/Mist	--	59.0	57.2	94%	NA	NA	29.90	1012.5