CHESTERFIELD, MISSOURI

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Elevation: 170 meters Latitude: 38 41N Longitude: 090 31W

WEATHER

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Number of Records: 221,284; Date Range: 1/1/95 - 3/22/16

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WEATHER ALMANAC - 31 DECEMBER, 2012

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	1.5 ^°C	3.3 ^°C (4:51 am)	0 ^°C (11:47 pm)
Dewpoint	-1.9 ^°C	0 ^°C (2:06 pm)	-6.7 ^°C (1:51 am)
Humidity	80 ^%	93 ^% (2:06 pm)	48 ^% (4:51 am)
Barometer	1021 ^hPa	1024 hPa (1:51 am)	1019 hPa (5:03 pm)
Wind Speed	8 ^km/h	24.1 ^km/h (9:11 am)

Weather Element	Average
Visibility	5.3 ^km
Wind Direction	S (178.9 °)

Weather Element	Total
Precipitation	11.94 ^mm
Heating Degree Days	16.7 (Base 18.3)

Averaged from 45 records on 31 December, 2012

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 31 DECEMBER, 2012

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Precipitation	Events	Conditions
1:51 AM	2.8 ^°C	-6.7 ^°C	50 ^%	1024 hPa	16.1 ^km	SW (230°)	20.4 ^km/h			Overcast
2:51 AM	2.8 ^°C	-6.7 ^°C	50 ^%	1024 hPa	16.1 ^km	SW (220°)	11.1 ^km/h			Overcast
3:51 AM	2.8 ^°C	-6.7 ^°C	50 ^%	1023.4 hPa	16.1 ^km	SSW (210°)	13 ^km/h			Overcast
4:51 AM	3.3 ^°C	-6.7 ^°C	48 ^%	1023.4 hPa	16.1 ^km	SSW (210°)	16.7 ^km/h			Overcast
5:51 AM	3.3 ^°C	-6.1 ^°C	51 ^%	1022.7 hPa	16.1 ^km	SW (220°)	14.8 ^km/h			Overcast
6:51 AM	3.3 ^°C	-5.6 ^°C	53 ^%	1022.7 hPa	16.1 ^km	SSW (210°)	13 ^km/h			Overcast
7:51 AM	3.3 ^°C	-5.6 ^°C	53 ^%	1021.7 hPa	16.1 ^km	SSW (210°)	9.3 ^km/h			Overcast
8:51 AM	3.3 ^°C	-5 ^°C	55 ^%	1022.4 hPa	16.1 ^km	WSW (240°)	11.1 ^km/h			Overcast
9:03 AM	3 ^°C	-4 ^°C	60 ^%	1021.7 hPa	6.4 ^km	West (260°)	16.7 ^km/h	0 mm	Snow	Light Snow
9:11 AM	3 ^°C	-3 ^°C	65 ^%	1021.7 hPa	4.8 ^km	West (270°)	24.1 ^km/h	0 mm	Snow	Light Snow
9:21 AM	2 ^°C	-2 ^°C	75 ^%	1022 hPa	3.2 ^km	West (270°)	20.4 ^km/h	0 mm	Snow	Light Snow
9:36 AM	2 ^°C	-2 ^°C	75 ^%	1022 hPa	1.6 ^km	West (280°)	11.1 ^km/h	0 mm	Snow	Light Snow
9:51 AM	1.1 ^°C	-1.1 ^°C	85 ^%	1023.4 hPa	1.6 ^km	West (260°)	13 ^km/h	0.51 mm	Snow	Light Snow
10:22 AM	1 ^°C	-1 ^°C	87 ^%	1023 hPa	0.8 ^km	WSW (240°)	9.3 ^km/h	0.51 mm	Fog-Snow	Light Snow
10:46 AM	1 ^°C	-1 ^°C	87 ^%	1022 hPa	0.8 ^km	SW (230°)	5.6 ^km/h	1.27 mm	Fog-Snow	Snow
10:51 AM	1.1 ^°C	-0.6 ^°C	89 ^%	1022.7 hPa	0.8 ^km	SW (230°)	5.6 ^km/h	1.52 mm	Fog-Snow	Snow
11:07 AM	1 ^°C	-1 ^°C	87 ^%	1021.3 hPa	0.8 ^km	Calm		0.51 mm	Fog-Snow	Light Snow
11:44 AM	1 ^°C	-1 ^°C	87 ^%	1021.3 hPa	0.8 ^km	Calm		1.78 mm	Fog-Snow	Snow
11:51 AM	1.1 ^°C	-0.6 ^°C	89 ^%	1022.4 hPa	0.8 ^km	SW (220°)	5.6 ^km/h	2.03 mm	Fog-Snow	Light Snow
12:02 PM	1 ^°C	-1 ^°C	87 ^%	1021 hPa	1.6 ^km	SW (220°)	5.6 ^km/h	0.25 mm	Snow	Light Snow
12:44 PM	1 ^°C	-1 ^°C	87 ^%	1020.3 hPa	2.4 ^km	SW (220°)	5.6 ^km/h	0.76 mm	Snow	Light Snow
12:51 PM	1.1 ^°C	-0.6 ^°C	89 ^%	1021 hPa	2.4 ^km	SW (220°)	7.4 ^km/h	0.76 mm	Snow	Light Snow
1:08 PM	1 ^°C	-1 ^°C	87 ^%	1020 hPa	3.2 ^km	SW (230°)	5.6 ^km/h	0.25 mm	Snow	Light Snow
1:31 PM	1 ^°C	-1 ^°C	87 ^%	1020 hPa	2.4 ^km	SW (230°)	9.3 ^km/h	0.25 mm	Snow	Light Snow
1:43 PM	1 ^°C	-1 ^°C	87 ^%	1020 hPa	1.6 ^km	SW (230°)	9.3 ^km/h	0.51 mm	Snow	Light Snow
1:51 PM	1.1 ^°C	-0.6 ^°C	89 ^%	1020.7 hPa	1.9 ^km	SW (230°)	9.3 ^km/h	0.51 mm	Snow	Light Snow
2:06 PM	1 ^°C	0 ^°C	93 ^%	1019.6 hPa	2.9 ^km	Variable	7.4 ^km/h	0 mm	Snow	Light Snow
2:33 PM	1 ^°C	0 ^°C	93 ^%	1019.6 hPa	1.9 ^km	Calm		0.25 mm	Snow	Light Snow
2:51 PM	1.7 ^°C	0 ^°C	89 ^%	1020.3 hPa	4 ^km	Calm		0.25 mm	Snow	Light Snow
3:51 PM	1.7 ^°C	-0.6 ^°C	85 ^%	1020.3 hPa	3.2 ^km	Calm		0 mm	Snow	Light Snow
4:12 PM	1 ^°C	-1 ^°C	87 ^%	1019.3 hPa	4 ^km	Calm		0 mm	Snow	Light Snow
4:51 PM	1.1 ^°C	-0.6 ^°C	89 ^%	1020.3 hPa	4 ^km	Calm		0 mm	Snow	Light Snow
5:03 PM	1 ^°C	-1 ^°C	87 ^%	1019 hPa	4.8 ^km	Calm		0 mm		Overcast
5:51 PM	1.1 ^°C	0 ^°C	92 ^%	1020 hPa	4.8 ^km	Calm		0 mm	Snow	Light Snow
6:51 PM	1.1 ^°C	0 ^°C	92 ^%	1020.3 hPa	4.8 ^km	Calm		0 mm	Snow	Light Snow
7:26 PM	1 ^°C	0 ^°C	93 ^%	1019 hPa	4 ^km	Calm		0 mm	Snow	Light Snow
7:51 PM	1.1 ^°C	0 ^°C	92 ^%	1020 hPa	4.8 ^km	Calm		0 mm		Overcast
8:51 PM	1.1 ^°C	-0.6 ^°C	89 ^%	1020 hPa	4.8 ^km	Calm		0 mm	Snow	Light Snow
9:13 PM	1 ^°C	-1 ^°C	87 ^%	1019 hPa	4 ^km	NNW (340°)	5.6 ^km/h		Snow	Light Snow
9:51 PM	1.1 ^°C	-0.6 ^°C	89 ^%	1020 hPa	3.2 ^km	North (360°)	5.6 ^km/h	0 mm	Snow	Light Snow
10:45 PM	1 ^°C	-1 ^°C	87 ^%	1019.6 hPa	3.2 ^km	North (350°)	11.1 ^km/h	0 mm	Snow	Light Snow
10:51 PM	1.1 ^°C	-0.6 ^°C	89 ^%	1020.7 hPa	4 ^km	NNW (330°)	5.6 ^km/h	0 mm	Snow	Light Snow
11:17 PM	1 ^°C	-1 ^°C	87 ^%	1019.6 hPa	4 ^km	North (360°)	16.7 ^km/h	0 mm	Snow	Light Snow
11:47 PM	0 ^°C	-2 ^°C	87 ^%	1020 hPa	1.9 ^km	North (360°)	16.7 ^km/h	0 mm	Snow	Light Snow
11:51 PM	0 ^°C	-2.2 ^°C	85 ^%	1021 hPa	1.9 ^km	North (360°)	20.4 ^km/h	0 mm	Snow	Light Snow

Hourly data recorded from KSTL, located 0 kilometers away from Chesterfield, Missouri