MCDONALD OBSERVATORY, TEXAS

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Elevation: 1756 meters Latitude: 30 32N Longitude: 104 08W

WEATHER

Monthly - Summary

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Number of Records: 490,191; Date Range: 1/1/95 - 3/22/16

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WEATHER ALMANAC - 21 MAY, 2015

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	-1.4 ^°C	20 ^°C (2:35 pm)	(12:15 am)
Dewpoint	-2.9 ^°C	13 ^°C (1:35 pm)	(7:00 pm)
Humidity	82.7 ^%	100 ^% (11:35 pm)	64 ^% (2:35 pm)
Barometer	1021.3 ^hPa	1023 hPa (9:15 am)	1018.6 hPa (6:55 pm)
Wind Speed	20.6 ^km/h	35.2 ^km/h (5:15 pm)
Wind Gust		42.6 ^km/h (4:55 pm)

Weather Element	Average
Visibility	15.6 ^km
Wind Direction	NE (49.4 °)

Weather Element	Total
Precipitation	21.08 ^mm
Heating Degree Days	17.2 (Base 18.3)

Averaged from 72 records on 21 May, 2015

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 21 MAY, 2015

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Precipitation	Events	Conditions
12:15 AM	-17.8 ^°C	-17.8 ^°C		1021.7 hPa	16.1 ^km	NE (50°)	14.8 ^km/h				Overcast
12:35 AM	-17.8 ^°C	-17.8 ^°C		1021.7 hPa	16.1 ^km	North (10°)	11.1 ^km/h				Overcast
12:55 AM	-17.8 ^°C	-17.8 ^°C		1021.7 hPa	16.1 ^km	NE (40°)	7.4 ^km/h				Overcast
1:15 AM	-17.8 ^°C	-17.8 ^°C		1021.3 hPa	16.1 ^km	NNE (30°)	16.7 ^km/h				Overcast
1:35 AM	-17.8 ^°C	-17.8 ^°C		1021.3 hPa	16.1 ^km	NE (50°)	18.5 ^km/h				Overcast
1:55 AM	-17.8 ^°C	-17.8 ^°C		1021.3 hPa	16.1 ^km	NE (50°)	18.5 ^km/h				Overcast
2:15 AM	-17.8 ^°C	-17.8 ^°C		1021.7 hPa	16.1 ^km	NE (50°)	16.7 ^km/h				Overcast
2:35 AM	-17.8 ^°C	-17.8 ^°C		1021.7 hPa	16.1 ^km	NE (50°)	16.7 ^km/h				Overcast
2:55 AM	-17.8 ^°C	-17.8 ^°C		1021.7 hPa	16.1 ^km	NE (50°)	16.7 ^km/h				Overcast
3:15 AM	-17.8 ^°C	-17.8 ^°C		1021.3 hPa	16.1 ^km	NE (40°)	16.7 ^km/h				Overcast
3:35 AM	-17.8 ^°C	-17.8 ^°C		1021.3 hPa	16.1 ^km	NE (40°)	20.4 ^km/h				Overcast
3:55 AM	-17.8 ^°C	-17.8 ^°C		1021.3 hPa	16.1 ^km	NE (40°)	16.7 ^km/h	29.6 ^km/h			Overcast
4:15 AM	-17.8 ^°C	-17.8 ^°C		1021.3 hPa	16.1 ^km	NE (40°)	18.5 ^km/h				Mostly Cloudy
4:35 AM	-17.8 ^°C	-17.8 ^°C		1021 hPa	16.1 ^km	NNE (30°)	18.5 ^km/h				Overcast
4:55 AM	-17.8 ^°C	-17.8 ^°C		1021.3 hPa	16.1 ^km	NE (40°)	18.5 ^km/h				Overcast
5:15 AM	-17.8 ^°C	-17.8 ^°C		1021.3 hPa	16.1 ^km	NE (40°)	16.7 ^km/h				Overcast
5:35 AM	-17.8 ^°C	-17.8 ^°C		1021 hPa	16.1 ^km	NE (40°)	18.5 ^km/h				Overcast
5:55 AM	-17.8 ^°C	-17.8 ^°C		1020.7 hPa	16.1 ^km	NE (40°)	16.7 ^km/h				Overcast
6:15 AM	13 ^°C	12 ^°C	94 ^%	1021.3 hPa	16.1 ^km	NE (40°)	18.5 ^km/h	27.8 ^km/h			Overcast
6:35 AM	-17.8 ^°C	-17.8 ^°C		1021 hPa	14.5 ^km	NE (50°)	20.4 ^km/h				Overcast
6:55 AM	-17.8 ^°C	-17.8 ^°C		1021.3 hPa	4 ^km	NNE (30°)	22.2 ^km/h				Overcast
7:15 AM	-17.8 ^°C	-17.8 ^°C		1021.7 hPa	11.3 ^km	NNE (20°)	16.7 ^km/h	25.9 ^km/h			Overcast
7:35 AM	-17.8 ^°C	-17.8 ^°C		1021.7 hPa	16.1 ^km	NE (40°)	16.7 ^km/h				Overcast
7:55 AM	13 ^°C	12 ^°C	94 ^%	1022 hPa	16.1 ^km	NE (40°)	18.5 ^km/h	25.9 ^km/h			Overcast
8:15 AM	-17.8 ^°C	-17.8 ^°C		1022.4 hPa	16.1 ^km	NNE (30°)	18.5 ^km/h				Overcast
8:35 AM	-17.8 ^°C	-17.8 ^°C		1022.7 hPa	16.1 ^km	NE (50°)	22.2 ^km/h				Overcast
8:55 AM	13 ^°C	12 ^°C	94 ^%	1022.7 hPa	16.1 ^km	NE (50°)	24.1 ^km/h				Overcast
9:15 AM	13 ^°C	12 ^°C	94 ^%	1023 hPa	16.1 ^km	NE (50°)	20.4 ^km/h	31.5 ^km/h			Overcast
9:35 AM	-17.8 ^°C	-17.8 ^°C		1023 hPa	16.1 ^km	NE (50°)	22.2 ^km/h				Overcast
9:55 AM	13 ^°C	11 ^°C	88 ^%	1023 hPa	16.1 ^km	NE (50°)	25.9 ^km/h				Overcast
10:15 AM	-17.8 ^°C	-17.8 ^°C		1022.7 hPa	16.1 ^km	NE (40°)	18.5 ^km/h				Overcast
10:35 AM	14 ^°C	12 ^°C	88 ^%	1022.7 hPa	16.1 ^km	NE (50°)	18.5 ^km/h				Overcast
10:55 AM	14 ^°C	11 ^°C	82 ^%	1023 hPa	16.1 ^km	NE (50°)	18.5 ^km/h				Overcast
11:15 AM	14 ^°C	12 ^°C	88 ^%	1022.7 hPa	16.1 ^km	NE (50°)	24.1 ^km/h				Overcast
11:35 AM	14 ^°C	12 ^°C	88 ^%	1022.7 hPa	16.1 ^km	NE (50°)	24.1 ^km/h				Overcast
11:55 AM	14 ^°C	12 ^°C	88 ^%	1022.7 hPa	16.1 ^km	NE (40°)	24.1 ^km/h				Overcast
12:15 PM	14 ^°C	11 ^°C	82 ^%	1023 hPa	16.1 ^km	NE (40°)	18.5 ^km/h				Overcast
12:35 PM	16 ^°C	12 ^°C	77 ^%	1022.7 hPa	16.1 ^km	NE (50°)	16.7 ^km/h	29.6 ^km/h			Overcast
12:55 PM	17 ^°C	12 ^°C	72 ^%	1022.7 hPa	16.1 ^km	NE (50°)	20.4 ^km/h	31.5 ^km/h			Overcast
1:15 PM	17 ^°C	12 ^°C	72 ^%	1022.4 hPa	16.1 ^km	ENE (60°)	20.4 ^km/h				Overcast
1:35 PM	17 ^°C	13 ^°C	77 ^%	1022.4 hPa	16.1 ^km	ENE (70°)	22.2 ^km/h	27.8 ^km/h			Overcast
1:55 PM	18 ^°C	13 ^°C	73 ^%	1022.4 hPa	16.1 ^km	ENE (60°)	18.5 ^km/h	25.9 ^km/h			Overcast
2:15 PM	19 ^°C	13 ^°C	68 ^%	1022 hPa	16.1 ^km	ENE (60°)	25.9 ^km/h	31.5 ^km/h			Overcast
2:35 PM	20 ^°C	13 ^°C	64 ^%	1021.7 hPa	16.1 ^km	ENE (60°)	27.8 ^km/h	38.9 ^km/h			Mostly Cloudy
2:55 PM	-17.8 ^°C	-17.8 ^°C		1021.3 hPa	16.1 ^km	NE (40°)	33.3 ^km/h				Scattered Clouds
3:15 PM	17 ^°C	12 ^°C	72 ^%	1021.7 hPa	16.1 ^km	NE (40°)	31.5 ^km/h	40.7 ^km/h			Scattered Clouds
3:35 PM	17 ^°C	12 ^°C	72 ^%	1021.3 hPa	16.1 ^km	NNE (30°)	31.5 ^km/h	40.7 ^km/h			Mostly Cloudy
3:55 PM	17 ^°C	12 ^°C	72 ^%	1021 hPa	16.1 ^km	NE (40°)	27.8 ^km/h	35.2 ^km/h			Partly Cloudy
4:15 PM	17 ^°C	12 ^°C	72 ^%	1020.7 hPa	16.1 ^km	NE (40°)	33.3 ^km/h	38.9 ^km/h			Scattered Clouds
4:35 PM	18 ^°C	12 ^°C	68 ^%	1020.3 hPa	16.1 ^km	NE (50°)	33.3 ^km/h	40.7 ^km/h			Partly Cloudy
4:55 PM	-17.8 ^°C	-17.8 ^°C		1020 hPa	16.1 ^km	NE (40°)	33.3 ^km/h	42.6 ^km/h			Clear
5:15 PM	17 ^°C	11 ^°C	68 ^%	1020 hPa	16.1 ^km	NE (50°)	35.2 ^km/h	40.7 ^km/h			Clear
5:35 PM	16 ^°C	11 ^°C	72 ^%	1019.6 hPa	16.1 ^km	NE (50°)	29.6 ^km/h	40.7 ^km/h			Clear
5:55 PM	-17.8 ^°C	-17.8 ^°C		1019.6 hPa	16.1 ^km	NE (40°)	31.5 ^km/h	38.9 ^km/h			Partly Cloudy
6:15 PM	14 ^°C	11 ^°C	82 ^%	1019.3 hPa	16.1 ^km	NNE (30°)	35.2 ^km/h				Partly Cloudy
6:35 PM	15 ^°C	11 ^°C	77 ^%	1019.3 hPa	16.1 ^km	NE (40°)	31.5 ^km/h				Partly Cloudy
6:55 PM	-17.8 ^°C	-17.8 ^°C		1018.6 hPa	16.1 ^km	NE (40°)	24.1 ^km/h	33.3 ^km/h			Clear
7:15 PM	14 ^°C	11 ^°C	82 ^%	1019.6 hPa	16.1 ^km	North (10°)	24.1 ^km/h				Scattered Clouds
7:35 PM	-17.8 ^°C	-17.8 ^°C		1020 hPa	14.5 ^km	North (360°)	31.5 ^km/h	42.6 ^km/h		Thunderstorm	Thunderstorm
7:55 PM	-17.8 ^°C	-17.8 ^°C		1021 hPa	8 ^km	NE (40°)	11.1 ^km/h	33.3 ^km/h	4.32 mm	Thunderstorm	Thunderstorm
8:15 PM	-17.8 ^°C	-17.8 ^°C		1019.6 hPa	8 ^km	East (90°)	24.1 ^km/h		5.59 mm	Thunderstorm	Thunderstorm
8:35 PM	13 ^°C	12 ^°C	94 ^%	1019.6 hPa	16.1 ^km	East (100°)	24.1 ^km/h		5.59 mm		Partly Cloudy
8:55 PM	-17.8 ^°C	-17.8 ^°C		1019.6 hPa	16.1 ^km	East (90°)	13 ^km/h		5.59 mm		Mostly Cloudy
9:15 PM	13 ^°C	12 ^°C	94 ^%	1019.3 hPa	16.1 ^km	ENE (60°)	14.8 ^km/h				Mostly Cloudy
9:35 PM	13 ^°C	12 ^°C	94 ^%	1019.6 hPa	16.1 ^km	NE (40°)	13 ^km/h				Scattered Clouds
9:55 PM	13 ^°C	12 ^°C	94 ^%	1019.6 hPa	16.1 ^km	NNE (20°)	13 ^km/h				Mostly Cloudy
10:15 PM	13 ^°C	12 ^°C	94 ^%	1019.6 hPa	16.1 ^km	NNE (20°)	5.6 ^km/h				Mostly Cloudy
10:35 PM	13 ^°C	12 ^°C	94 ^%	1020.3 hPa	16.1 ^km	Calm					Mostly Cloudy
10:55 PM	12 ^°C	11 ^°C	94 ^%	1020.7 hPa	16.1 ^km	ENE (70°)	9.3 ^km/h				Scattered Clouds
11:15 PM	-17.8 ^°C	-17.8 ^°C		1020.7 hPa	16.1 ^km	North					Partly Cloudy
11:35 PM	12 ^°C	12 ^°C	100 ^%	1020.7 hPa	16.1 ^km	East (80°)	9.3 ^km/h				Scattered Clouds
11:55 PM	-17.8 ^°C	-17.8 ^°C		1020.3 hPa	16.1 ^km	East (90°)	9.3 ^km/h				Mostly Cloudy

Hourly data recorded from KMRF, located 0 kilometers away from McDonald Observatory, Texas