ST. HELENA, CALIFORNIA

Home > North America > United States > California
Elevation: 52 meters Latitude: 38 26N Longitude: 122 25W

WEATHER

Monthly - Summary

Hourly Data

SELECT A DAY

Number of Records: 110,348; Date Range: 4/19/11 - 3/22/16

PRINT THIS DATA

[ ← Previous Day ]
WEATHER ALMANAC - 23 AUGUST, 2015

[ Next Day → ]

[ °F ] °C

Weather Element	Average	High	Low
Temperature	18.1 ^°C	24 ^°C (1:55 pm)	15 ^°C (6:15 am)
Dewpoint	13.1 ^°C	14 ^°C (12:35 am)	13 ^°C (12:15 am)
Humidity	73.6 ^%	88 ^% (12:35 am)	50 ^% (1:55 pm)
Barometer	1015.9 ^hPa	1017.6 hPa (10:15 am)	1014.6 hPa (1:55 am)
Wind Speed	10.3 ^km/h	18.5 ^km/h (1:55 pm)
Wind Gust		29.6 ^km/h (7:35 pm)

Weather Element	Average
Visibility	16.1 ^km
Wind Direction	WSW (262.3 °)

Weather Element	Total
Precipitation	---
Cooling Degree Days	1.2 (Base 18.3)
Growing Degree Days	9.5 (Base 10)

Averaged from 69 records on 23 August, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 23 AUGUST, 2015

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Conditions
12:15 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	WNW (300°)	7.4 ^km/h		Overcast
12:35 AM	16 ^°C	14 ^°C	88 ^%	1014.9 hPa	16.1 ^km	WNW (300°)	5.6 ^km/h		Overcast
12:55 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	West (270°)	11.1 ^km/h		Overcast
1:15 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	WNW (300°)	7.4 ^km/h		Overcast
1:35 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	WNW (290°)	7.4 ^km/h		Overcast
1:55 AM	16 ^°C	13 ^°C	82 ^%	1014.6 hPa	16.1 ^km	WNW (300°)	7.4 ^km/h		Overcast
2:15 AM	16 ^°C	13 ^°C	82 ^%	1014.6 hPa	16.1 ^km	WNW (290°)	7.4 ^km/h		Overcast
2:35 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	NW (310°)	7.4 ^km/h		Overcast
2:55 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	West (270°)	13 ^km/h		Overcast
3:15 AM	16 ^°C	13 ^°C	82 ^%	1014.6 hPa	16.1 ^km	West (270°)	7.4 ^km/h		Overcast
3:35 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	West (280°)	7.4 ^km/h		Overcast
3:55 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	West (260°)	11.1 ^km/h		Overcast
4:15 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	WNW (290°)	5.6 ^km/h		Overcast
4:35 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	WNW (290°)	5.6 ^km/h		Overcast
4:55 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	WNW (300°)	9.3 ^km/h		Overcast
5:15 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	WNW (290°)	5.6 ^km/h		Overcast
5:35 AM	16 ^°C	13 ^°C	82 ^%	1014.9 hPa	16.1 ^km	West (260°)	5.6 ^km/h		Overcast
5:55 AM	16 ^°C	13 ^°C	82 ^%	1015.2 hPa	16.1 ^km	West (270°)	9.3 ^km/h		Overcast
6:15 AM	15 ^°C	13 ^°C	88 ^%	1015.2 hPa	16.1 ^km	WNW (300°)	7.4 ^km/h		Overcast
6:35 AM	16 ^°C	13 ^°C	82 ^%	1015.6 hPa	16.1 ^km	Calm			Overcast
6:55 AM	16 ^°C	13 ^°C	82 ^%	1015.9 hPa	16.1 ^km	Calm			Overcast
7:15 AM	16 ^°C	13 ^°C	82 ^%	1015.9 hPa	16.1 ^km	Calm			Overcast
7:35 AM	16 ^°C	13 ^°C	82 ^%	1016.3 hPa	16.1 ^km	WNW (290°)	9.3 ^km/h		Overcast
7:55 AM	16 ^°C	13 ^°C	82 ^%	1016.3 hPa	16.1 ^km	WSW (250°)	7.4 ^km/h		Overcast
8:15 AM	16 ^°C	13 ^°C	82 ^%	1016.6 hPa	16.1 ^km	SW (230°)	5.6 ^km/h		Overcast
8:35 AM	17 ^°C	13 ^°C	77 ^%	1016.6 hPa	16.1 ^km	WSW (250°)	7.4 ^km/h		Overcast
8:55 AM	17 ^°C	13 ^°C	77 ^%	1016.9 hPa	16.1 ^km	NW (320°)	5.6 ^km/h		Overcast
9:15 AM	17 ^°C	13 ^°C	77 ^%	1016.9 hPa	16.1 ^km	Calm			Overcast
9:35 AM	17 ^°C	13 ^°C	77 ^%	1017.3 hPa	16.1 ^km	West (270°)	9.3 ^km/h		Overcast
9:55 AM	17 ^°C	13 ^°C	77 ^%	1017.3 hPa	16.1 ^km	Calm			Overcast
10:15 AM	18 ^°C	13 ^°C	73 ^%	1017.6 hPa	16.1 ^km	SW (230°)	7.4 ^km/h		Overcast
10:35 AM	19 ^°C	13 ^°C	68 ^%	1017.6 hPa	16.1 ^km	WSW (240°)	11.1 ^km/h		Overcast
10:55 AM	19 ^°C	13 ^°C	68 ^%	1017.6 hPa	16.1 ^km	West (280°)	11.1 ^km/h		Mostly Cloudy
11:15 AM	19 ^°C	13 ^°C	68 ^%	1017.6 hPa	16.1 ^km	West (280°)	7.4 ^km/h		Partly Cloudy
11:35 AM	20 ^°C	13 ^°C	64 ^%	1017.6 hPa	16.1 ^km	WNW (300°)	9.3 ^km/h		Clear
11:55 AM	20 ^°C	13 ^°C	64 ^%	1017.6 hPa	16.1 ^km	West (260°)	9.3 ^km/h		Clear
12:15 PM	21 ^°C	13 ^°C	60 ^%	1017.3 hPa	16.1 ^km	NNW (340°)	9.3 ^km/h		Clear
12:35 PM	22 ^°C	13 ^°C	57 ^%	1017.3 hPa	16.1 ^km	West (260°)	9.3 ^km/h		Clear
12:55 PM	22 ^°C	13 ^°C	57 ^%	1016.9 hPa	16.1 ^km	West (280°)	13 ^km/h		Clear
1:15 PM	23 ^°C	13 ^°C	53 ^%	1016.9 hPa	16.1 ^km	West (280°)	13 ^km/h		Clear
1:35 PM	23 ^°C	13 ^°C	53 ^%	1016.6 hPa	16.1 ^km	West (280°)	11.1 ^km/h		Clear
1:55 PM	24 ^°C	13 ^°C	50 ^%	1016.6 hPa	16.1 ^km	West (270°)	18.5 ^km/h		Clear
2:15 PM	24 ^°C	13 ^°C	50 ^%	1016.6 hPa	16.1 ^km	West (280°)	13 ^km/h		Clear
2:35 PM	24 ^°C	13 ^°C	50 ^%	1016.3 hPa	16.1 ^km	West (270°)	16.7 ^km/h		Clear
2:55 PM	24 ^°C	14 ^°C	53 ^%	1015.9 hPa	16.1 ^km	West (280°)	18.5 ^km/h		Clear
3:15 PM	24 ^°C	13 ^°C	50 ^%	1015.9 hPa	16.1 ^km	WNW (290°)	18.5 ^km/h		Clear
3:35 PM	24 ^°C	14 ^°C	53 ^%	1015.6 hPa	16.1 ^km	WNW (300°)	13 ^km/h		Clear
3:55 PM	24 ^°C	13 ^°C	50 ^%	1015.6 hPa	16.1 ^km	NW (310°)	9.3 ^km/h		Clear
4:15 PM	24 ^°C	13 ^°C	50 ^%	1015.6 hPa	16.1 ^km	West (280°)	13 ^km/h		Clear
4:35 PM	23 ^°C	13 ^°C	53 ^%	1015.6 hPa	16.1 ^km	WNW (300°)	14.8 ^km/h		Clear
4:55 PM	23 ^°C	13 ^°C	53 ^%	1015.6 hPa	16.1 ^km	WNW (290°)	16.7 ^km/h		Clear
5:15 PM	21 ^°C	13 ^°C	60 ^%	1015.6 hPa	16.1 ^km	WNW (290°)	16.7 ^km/h	27.8 ^km/h	Clear
5:35 PM	21 ^°C	13 ^°C	60 ^%	1015.6 hPa	16.1 ^km	West (280°)	18.5 ^km/h		Clear
6:15 PM	19 ^°C	13 ^°C	68 ^%	1015.9 hPa	16.1 ^km	West (280°)	14.8 ^km/h		Clear
6:55 PM	18 ^°C	13 ^°C	73 ^%	1015.9 hPa	16.1 ^km	WNW (290°)	14.8 ^km/h		Clear
7:35 PM	17 ^°C	13 ^°C	77 ^%	1016.3 hPa	16.1 ^km	West (280°)	18.5 ^km/h	29.6 ^km/h	Clear
7:55 PM	17 ^°C	13 ^°C	77 ^%	1016.3 hPa	16.1 ^km	WNW (300°)	11.1 ^km/h		Partly Cloudy
8:15 PM	16 ^°C	13 ^°C	82 ^%	1016.3 hPa	16.1 ^km	NW (310°)	9.3 ^km/h		Mostly Cloudy
8:35 PM	16 ^°C	13 ^°C	82 ^%	1016.3 hPa	16.1 ^km	WNW (300°)	14.8 ^km/h		Overcast
8:55 PM	15 ^°C	13 ^°C	88 ^%	1016.3 hPa	16.1 ^km	WNW (290°)	11.1 ^km/h		Overcast
9:15 PM	16 ^°C	13 ^°C	82 ^%	1016.6 hPa	16.1 ^km	West (270°)	16.7 ^km/h		Overcast
9:35 PM	16 ^°C	13 ^°C	82 ^%	1016.6 hPa	16.1 ^km	WNW (290°)	14.8 ^km/h		Overcast
9:55 PM	16 ^°C	13 ^°C	82 ^%	1016.9 hPa	16.1 ^km	West (280°)	14.8 ^km/h		Overcast
10:15 PM	16 ^°C	13 ^°C	82 ^%	1016.6 hPa	16.1 ^km	West (280°)	13 ^km/h		Overcast
10:35 PM	15 ^°C	13 ^°C	88 ^%	1016.9 hPa	11.3 ^km	West (280°)	16.7 ^km/h		Overcast
10:55 PM	15 ^°C	13 ^°C	88 ^%	1016.6 hPa	16.1 ^km	WNW (300°)	7.4 ^km/h		Overcast
11:15 PM	15 ^°C	13 ^°C	88 ^%	1016.6 hPa	16.1 ^km	West (270°)	14.8 ^km/h		Overcast
11:35 PM	15 ^°C	13 ^°C	88 ^%	1016.9 hPa	16.1 ^km	West (270°)	13 ^km/h		Overcast
11:55 PM	15 ^°C	13 ^°C	88 ^%	1016.9 hPa	16.1 ^km	WNW (290°)	13 ^km/h		Overcast

Hourly data recorded from KO69, located 0 kilometers away from St. Helena, California