ST. HELENA, CALIFORNIA

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Elevation: 52 meters Latitude: 38 26N Longitude: 122 25W

WEATHER

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

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WEATHER ALMANAC - 17 SEPTEMBER, 2014

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	20.3 ^°C	29 ^°C (2:55 pm)	16 ^°C (12:35 am)
Dewpoint	13.9 ^°C	18 ^°C (11:35 pm)	10 ^°C (3:15 pm)
Humidity	70.6 ^%	94 ^% (12:35 am)	30 ^% (3:15 pm)
Barometer	1009.5 ^hPa	1010.8 hPa (12:55 am)	1007.5 hPa (4:35 pm)
Wind Speed	8.2 ^km/h	20.4 ^km/h (3:15 pm)
Wind Gust		31.5 ^km/h (3:35 pm)

Weather Element	Average
Visibility	15.9 ^km
Wind Direction	SW (228.4 °)

Weather Element	Total
Precipitation	---
Cooling Degree Days	4.2 (Base 18.3)
Growing Degree Days	12.5 (Base 10)

Averaged from 68 records on 17 September, 2014

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 17 SEPTEMBER, 2014

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Conditions
12:35 AM	16 ^°C	15 ^°C	94 ^%	1010.5 hPa	16.1 ^km	WNW (300°)	7.4 ^km/h		Overcast
12:55 AM	16 ^°C	15 ^°C	94 ^%	1010.8 hPa	16.1 ^km	West (280°)	9.3 ^km/h		Overcast
1:15 AM	16 ^°C	15 ^°C	94 ^%	1010.5 hPa	16.1 ^km	West (280°)	7.4 ^km/h		Overcast
1:35 AM	16 ^°C	15 ^°C	94 ^%	1010.5 hPa	16.1 ^km	WNW (300°)	5.6 ^km/h		Overcast
1:55 AM	16 ^°C	15 ^°C	94 ^%	1010.5 hPa	16.1 ^km	NNW (330°)	5.6 ^km/h		Overcast
2:15 AM	16 ^°C	15 ^°C	94 ^%	1010.5 hPa	16.1 ^km	NNW (330°)	5.6 ^km/h		Overcast
2:35 AM	16 ^°C	15 ^°C	94 ^%	1010.5 hPa	16.1 ^km	WNW (290°)	11.1 ^km/h		Overcast
2:55 AM	16 ^°C	15 ^°C	94 ^%	1010.2 hPa	16.1 ^km	WNW (300°)	11.1 ^km/h		Overcast
3:15 AM	16 ^°C	15 ^°C	94 ^%	1010.2 hPa	16.1 ^km	NW (310°)	7.4 ^km/h		Overcast
3:35 AM	16 ^°C	14 ^°C	88 ^%	1010.2 hPa	16.1 ^km	NW (310°)	7.4 ^km/h		Overcast
3:55 AM	16 ^°C	14 ^°C	88 ^%	1010.2 hPa	16.1 ^km	WNW (300°)	7.4 ^km/h		Overcast
4:15 AM	16 ^°C	14 ^°C	88 ^%	1010.2 hPa	16.1 ^km	NW (310°)	7.4 ^km/h		Overcast
4:35 AM	16 ^°C	14 ^°C	88 ^%	1010.2 hPa	16.1 ^km	WNW (300°)	5.6 ^km/h		Overcast
4:55 AM	16 ^°C	14 ^°C	88 ^%	1010.2 hPa	16.1 ^km	NW (320°)	7.4 ^km/h		Overcast
5:15 AM	16 ^°C	14 ^°C	88 ^%	1009.8 hPa	16.1 ^km	NW (320°)	7.4 ^km/h		Overcast
5:35 AM	16 ^°C	14 ^°C	88 ^%	1010.2 hPa	16.1 ^km	NW (310°)	7.4 ^km/h		Overcast
5:55 AM	16 ^°C	14 ^°C	88 ^%	1010.2 hPa	16.1 ^km	Calm			Overcast
6:15 AM	16 ^°C	14 ^°C	88 ^%	1010.2 hPa	16.1 ^km	NW (320°)	5.6 ^km/h		Overcast
6:35 AM	16 ^°C	14 ^°C	88 ^%	1010.2 hPa	16.1 ^km	NNW (330°)	7.4 ^km/h		Overcast
6:55 AM	16 ^°C	13 ^°C	82 ^%	1010.2 hPa	16.1 ^km	WNW (290°)	11.1 ^km/h		Overcast
7:15 AM	16 ^°C	14 ^°C	88 ^%	1010.5 hPa	16.1 ^km	NW (310°)	5.6 ^km/h		Overcast
7:35 AM	16 ^°C	14 ^°C	88 ^%	1010.5 hPa	16.1 ^km	NW (320°)	5.6 ^km/h		Overcast
7:55 AM	17 ^°C	14 ^°C	82 ^%	1010.8 hPa	16.1 ^km	WNW (290°)	9.3 ^km/h		Overcast
8:15 AM	17 ^°C	14 ^°C	82 ^%	1010.8 hPa	16.1 ^km	WNW (300°)	5.6 ^km/h		Overcast
8:35 AM	17 ^°C	14 ^°C	82 ^%	1010.8 hPa	16.1 ^km	NW (310°)	5.6 ^km/h		Overcast
8:55 AM	17 ^°C	13 ^°C	77 ^%	1010.8 hPa	16.1 ^km	NW (320°)	5.6 ^km/h		Overcast
9:15 AM	18 ^°C	14 ^°C	77 ^%	1010.8 hPa	16.1 ^km	Calm			Overcast
9:35 AM	18 ^°C	13 ^°C	73 ^%	1010.8 hPa	16.1 ^km	WNW (300°)	7.4 ^km/h		Overcast
9:55 AM	19 ^°C	14 ^°C	73 ^%	1010.8 hPa	16.1 ^km	West (280°)	9.3 ^km/h		Scattered Clouds
10:15 AM	19 ^°C	13 ^°C	68 ^%	1010.8 hPa	16.1 ^km	WNW (300°)	5.6 ^km/h		Clear
10:35 AM	20 ^°C	13 ^°C	64 ^%	1010.5 hPa	16.1 ^km	NW (310°)	5.6 ^km/h		Clear
11:15 AM	22 ^°C	13 ^°C	57 ^%	1010.5 hPa	16.1 ^km	NNW (340°)	5.6 ^km/h		Clear
11:35 AM	22 ^°C	13 ^°C	57 ^%	1010.5 hPa	16.1 ^km	ENE (70°)	5.6 ^km/h		Clear
11:55 AM	22 ^°C	13 ^°C	57 ^%	1010.2 hPa	16.1 ^km	NW (320°)	5.6 ^km/h		Clear
12:15 PM	23 ^°C	13 ^°C	53 ^%	1009.8 hPa	16.1 ^km	North (10°)	7.4 ^km/h		Clear
12:35 PM	24 ^°C	13 ^°C	50 ^%	1009.8 hPa	16.1 ^km	Calm			Clear
12:55 PM	25 ^°C	13 ^°C	47 ^%	1009.5 hPa	16.1 ^km	NNE (20°)	5.6 ^km/h		Clear
1:15 PM	25 ^°C	13 ^°C	47 ^%	1009.5 hPa	14.5 ^km	Calm			Clear
1:35 PM	27 ^°C	13 ^°C	42 ^%	1009.1 hPa	16.1 ^km	East (90°)	5.6 ^km/h		Clear
1:55 PM	28 ^°C	13 ^°C	39 ^%	1008.8 hPa	16.1 ^km	West (280°)	9.3 ^km/h		Clear
2:15 PM	28 ^°C	12 ^°C	37 ^%	1008.5 hPa	16.1 ^km	South (180°)	5.6 ^km/h		Clear
2:35 PM	28 ^°C	12 ^°C	37 ^%	1008.5 hPa	16.1 ^km	WSW (250°)	18.5 ^km/h		Clear
2:55 PM	29 ^°C	11 ^°C	33 ^%	1008.1 hPa	16.1 ^km	North			Clear
3:15 PM	29 ^°C	10 ^°C	30 ^%	1008.1 hPa	16.1 ^km	SW (230°)	20.4 ^km/h		Clear
3:35 PM	28 ^°C	10 ^°C	32 ^%	1008.1 hPa	16.1 ^km	SSW (210°)	16.7 ^km/h	31.5 ^km/h	Clear
3:55 PM	28 ^°C	10 ^°C	32 ^%	1007.8 hPa	16.1 ^km	West (260°)	20.4 ^km/h		Scattered Clouds
4:15 PM	27 ^°C	12 ^°C	39 ^%	1007.8 hPa	16.1 ^km	West (260°)	18.5 ^km/h	31.5 ^km/h	Mostly Cloudy
4:35 PM	27 ^°C	12 ^°C	39 ^%	1007.5 hPa	16.1 ^km	West (260°)	13 ^km/h		Partly Cloudy
4:55 PM	26 ^°C	12 ^°C	42 ^%	1007.8 hPa	16.1 ^km	West (260°)	20.4 ^km/h	27.8 ^km/h	Clear
5:35 PM	23 ^°C	13 ^°C	53 ^%	1008.1 hPa	16.1 ^km	Calm			Overcast
5:55 PM	23 ^°C	13 ^°C	53 ^%	1007.8 hPa	16.1 ^km	WNW (300°)	11.1 ^km/h		Overcast
6:15 PM	23 ^°C	13 ^°C	53 ^%	1007.8 hPa	16.1 ^km	WNW (300°)	11.1 ^km/h		Overcast
6:55 PM	22 ^°C	13 ^°C	57 ^%	1008.1 hPa	16.1 ^km	WSW (240°)	18.5 ^km/h		Overcast
7:15 PM	22 ^°C	14 ^°C	60 ^%	1007.8 hPa	16.1 ^km	WSW (240°)	16.7 ^km/h		Overcast
7:35 PM	22 ^°C	14 ^°C	60 ^%	1008.1 hPa	16.1 ^km	WSW (240°)	18.5 ^km/h		Overcast
7:55 PM	21 ^°C	14 ^°C	64 ^%	1008.5 hPa	16.1 ^km	WSW (240°)	13 ^km/h		Overcast
8:15 PM	21 ^°C	14 ^°C	64 ^%	1008.5 hPa	16.1 ^km	West (260°)	7.4 ^km/h		Overcast
8:35 PM	20 ^°C	15 ^°C	73 ^%	1008.5 hPa	16.1 ^km	WSW (240°)	7.4 ^km/h		Overcast
8:55 PM	20 ^°C	15 ^°C	73 ^%	1008.5 hPa	16.1 ^km	SW (230°)	5.6 ^km/h		Overcast
9:15 PM	21 ^°C	15 ^°C	68 ^%	1008.8 hPa	16.1 ^km	SSE (150°)	9.3 ^km/h		Overcast
9:35 PM	20 ^°C	17 ^°C	83 ^%	1008.8 hPa	14.5 ^km	WSW (250°)	5.6 ^km/h		Overcast
9:55 PM	20 ^°C	17 ^°C	83 ^%	1008.8 hPa	16.1 ^km	West (260°)	5.6 ^km/h		Overcast
10:15 PM	20 ^°C	17 ^°C	83 ^%	1008.8 hPa	16.1 ^km	SW (230°)	5.6 ^km/h		Overcast
10:35 PM	20 ^°C	17 ^°C	83 ^%	1008.8 hPa	16.1 ^km	Calm			Overcast
10:55 PM	20 ^°C	17 ^°C	83 ^%	1009.1 hPa	16.1 ^km	South (170°)	9.3 ^km/h		Overcast
11:15 PM	19 ^°C	17 ^°C	88 ^%	1009.1 hPa	14.5 ^km	Calm			Overcast
11:35 PM	19 ^°C	18 ^°C	94 ^%	1009.1 hPa	14.5 ^km	SE (130°)	7.4 ^km/h		Overcast
11:55 PM	19 ^°C	18 ^°C	94 ^%	1009.1 hPa	16.1 ^km	SE (140°)	5.6 ^km/h		Overcast

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