CHICAGO OHARE INTL AP, IL - COOP Midwest station 111549

111549 - CHICAGO OHARE INTL AP, Illinois

Latitude
41° 59´N

Longitude
87° 55´W

Elevation
201 meters

10 nearest COOP Midwest stations

1 mi	E :	PARK RIDGE AF, IL
4 mi	NW :	ARLINGTON HEIGTS 4 SS, IL
4 mi	WNW :	ELK GROVE VIL FIREHOUSE, IL
5 mi	N :	DES PLAINES 1 NW, IL
7 mi	NNW :	MOUNT PROSPECT, IL
9 mi	E :	CHICAGO MAYFAIR PUMP STN, IL
10 mi	NE :	SKOKIE, IL
11 mi	ENE :	SKOKIE N S TREAT WKS, IL
11 mi	E :	CHICAGO N BRA PUMP STN, IL
11 mi	ESE :	CHICAGO SPRINGFLD PUMP, IL

Weather variables Help
Click a weather variable name to jump down to those statistics.

	Total observations	%	NDJFM observations	%
TMAX	14302	78.3%	5957	78.8%
TMIN	14285	78.2%	5945	78.6%
PRCP	14247	78.0%	5931	78.4%
SNOW	13751	75.3%	5710	75.5%

TMAX Help top of page

TMAX	observations	mean	std dev		Distribution	during extreme days of
NDJFM	5957 by year	38.1°F	13.7°F		overall	NAM	PNA	CTI

TMAX and NAM Help scatterplot	days by month	mean NAM index	extreme high NAM days	extreme low NAM days	ratio of extreme high:low NAM days
Extreme high events Days with TMAX>=60°F	429	0.45	99	28	3.5*	map	table
Extreme low events Days with TMAX<=18°F	432	-0.49	57	123	2.2*	map	table

TMAX and PNA Help scatterplot	days by month	mean PNA index	extreme high PNA days	extreme low PNA days	ratio of extreme high:low PNA days
Extreme high events Days with TMAX>=60°F	429	-0.42	28	85	3.0*	map	table
Extreme low events Days with TMAX<=18°F	432	0.20	101	74	1.4	map	table

TMAX and CTI Help	days by month	high CTI days (moderate to strong El Niño winters)	low CTI days (moderate to strong La Niña winters)	ratio of high:low CTI (El Niño:La Niña days)
Extreme high events Days with TMAX>=60°F	429	81	60	1.4	map	table
Extreme low events Days with TMAX<=18°F	432	33	35	1.1	map	table

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TMIN Help top of page

TMIN	observations	mean	std dev		Distribution	during extreme days of
NDJFM	5945 by year	22.3°F	13.5°F		overall	NAM	PNA	CTI

TMIN and NAM Help scatterplot	days by month	mean NAM index	extreme high NAM days	extreme low NAM days	ratio of extreme high:low NAM days
Extreme low events Days with TMIN<=-1°F	423	-0.53	56	119	2.1*	map	table
Extreme high events Days with TMIN>=40°F	399	0.37	79	24	3.3*	map	table

TMIN and PNA Help scatterplot	days by month	mean PNA index	extreme high PNA days	extreme low PNA days	ratio of extreme high:low PNA days
Extreme low events Days with TMIN<=-1°F	423	0.27	110	66	1.7*	map	table
Extreme high events Days with TMIN>=40°F	399	-0.44	18	73	4.1*	map	table

TMIN and CTI Help	days by month	high CTI days (moderate to strong El Niño winters)	low CTI days (moderate to strong La Niña winters)	ratio of high:low CTI (El Niño:La Niña days)
Extreme low events Days with TMIN<=-1°F	423	37	25	1.5*	map	table
Extreme high events Days with TMIN>=40°F	399	91	54	1.7*	map	table

TMIN under 2 index extremes Help

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PRCP (total liquid water equivalent) Help top of page

PRCP	observations	mean		Distribution	during extreme days of
NDJFM	5931 by year	0.07"		overall	NAM	PNA	CTI

PRCP and NAM Help scatterplot	days by month	mean	mean NAM index	extreme high NAM days	extreme low NAM days	ratio of extreme high:low NAM days
Observed events Days with PRCP>0.00"	2135	0.20"	-0.01	351	351	1.0	map	table
Extreme events Days with PRCP>0.29"	420	0.67"	0.11	69	53	1.3	map	table

PRCP and PNA Help scatterplot	days by month	mean	mean PNA index	extreme high PNA days	extreme low PNA days	ratio of extreme high:low PNA days
Observed events Days with PRCP>0.00"	2135	0.20"	-0.13	300	395	1.3*	map	table
Extreme events Days with PRCP>0.29"	420	0.67"	-0.43	35	89	2.5*	map	table

PRCP and CTI Help	days by month	mean	high CTI days (moderate to strong El Niño winters)	low CTI days (moderate to strong La Niña winters)	ratio of high:low CTI (El Niño:La Niña days)
Observed events Days with PRCP>0.00"	2135	0.20"	350	241	1.5*	map	table
Extreme events Days with PRCP>0.29"	420	0.67"	83	48	1.7*	map	table

PRCP under 2 index extremes Help

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SNOW Help top of page

SNOW	observations	mean		Distribution	during extreme days of
NDJFM	5710 by year	0.24"		overall	NAM	PNA	CTI

SNOW and NAM Help scatterplot	days by month	mean	mean NAM index	extreme high NAM days	extreme low NAM days	ratio of extreme high:low NAM days
Observed events Days with SNOW>0.0"	1135	1.20"	-0.24	161	251	1.6*	map	table
Extreme events Days with SNOW>1.9"	223	3.76"	-0.25	34	46	1.4	map	table

SNOW and PNA Help scatterplot	days by month	mean	mean PNA index	extreme high PNA days	extreme low PNA days	ratio of extreme high:low PNA days
Observed events Days with SNOW>0.0"	1135	1.20"	0.15	237	173	1.4*	map	table
Extreme events Days with SNOW>1.9"	223	3.76"	-0.10	40	45	1.1	map	table

SNOW and CTI Help	days by month	mean	high CTI days (moderate to strong El Niño winters)	low CTI days (moderate to strong La Niña winters)	ratio of high:low CTI (El Niño:La Niña days)
Observed events Days with SNOW>0.0"	1135	1.20"	155	115	1.3*	map	table
Extreme events Days with SNOW>1.9"	223	3.76"	31	20	1.6	map	table

SNOW under 2 index extremes Help

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