History for Chicago, IL

Tuesday, April 17, 2012 — View Current Conditions

Tuesday, April 17, 2012

	Actual	Average	Record
Temperature
Mean Temperature	48 °F	50 °F
Max Temperature	57 °F	60 °F	88 °F (1976)
Min Temperature	39 °F	39 °F	17 °F (1875)
Degree Days
Heating Degree Days	17	16
Month to date heating degree days	230	318
Since 1 July heating degree days	4593	5893
Cooling Degree Days	0	0
Month to date cooling degree days	4	0
Year to date cooling degree days	43	1
Moisture
Dew Point	36 °F
Average Humidity	63
Maximum Humidity	79
Minimum Humidity	47
Precipitation
Precipitation	0.00 in	0.12 in	2.01 in (2013)
Month to date precipitation	0.90	1.87
Year to date precipitation	7.08	7.89
Snow
Snow	0.00 in	0.00 in	0.50 in (1949)
Month to date snowfall	0.0	1.0
Since 1 July snowfall	19.8	36.1
Snow Depth	0.00 in
Sea Level Pressure
Sea Level Pressure	30.32 in
Wind
Wind Speed	7 mph (ENE)
Max Wind Speed	15 mph
Max Gust Speed	22 mph
Visibility	10 miles
Events

T = Trace of Precipitation, MM = Missing Value

Source: NWS Daily Summary

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Astronomy

May. 19, 2013	Rise	Set
Actual Time	6:07 AM CDT	7:35 PM CDT
Civil Twilight	5:38 AM CDT	8:04 PM CDT
Nautical Twilight	5:02 AM CDT	8:40 PM CDT
Astronomical Twilight	4:25 AM CDT	9:17 PM CDT
Moon	4:07 AM CDT (4/17)	4:25 PM CDT (4/17)
Length Of Visible Light	14h 26m
Length of Day	13h 28m

Waning Crescent, 12% of the Moon is Illuminated
Apr 17 Waning Crescent	Apr 21 New	Apr 29 First Quarter	May 5 Full	May 12 Last Quarter

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Hourly Observations

Time (CDT)	Temp.	Windchill	Dew Point	Humidity	Pressure	Visibility	Wind Dir	Wind Speed	Gust Speed	Precip	Conditions
12:51 AM	45.0 °F	42.6 °F	35.1 °F	68%	30.24 in	10.0 mi	SW	4.6 mph	-	N/A	Partly Cloudy
1:51 AM	43.0 °F	-	35.1 °F	74%	30.25 in	10.0 mi	Calm	Calm	-	N/A	Scattered Clouds
2:51 AM	43.0 °F	41.3 °F	35.1 °F	74%	30.24 in	10.0 mi	West	3.5 mph	-	N/A	Overcast
3:51 AM	42.1 °F	40.2 °F	35.1 °F	76%	30.26 in	10.0 mi	WSW	3.5 mph	-	N/A	Partly Cloudy
4:51 AM	41.0 °F	36.4 °F	34.0 °F	76%	30.28 in	10.0 mi	WNW	6.9 mph	-	N/A	Clear
5:51 AM	39.9 °F	35.8 °F	33.1 °F	77%	30.31 in	10.0 mi	WNW	5.8 mph	-	N/A	Partly Cloudy
6:51 AM	42.1 °F	38.4 °F	34.0 °F	73%	30.34 in	10.0 mi	NW	5.8 mph	-	N/A	Scattered Clouds
7:51 AM	44.1 °F	40.8 °F	36.0 °F	73%	30.35 in	10.0 mi	NNE	5.8 mph	-	N/A	Partly Cloudy
8:51 AM	48.0 °F	-	36.0 °F	63%	30.37 in	10.0 mi	NNE	4.6 mph	-	N/A	Partly Cloudy
9:51 AM	50.0 °F	-	35.1 °F	57%	30.38 in	10.0 mi	ENE	5.8 mph	-	N/A	Partly Cloudy
10:51 AM	51.1 °F	-	34.0 °F	52%	30.38 in	10.0 mi	ENE	8.1 mph	-	N/A	Scattered Clouds
11:51 AM	52.0 °F	-	34.0 °F	50%	30.38 in	10.0 mi	ENE	11.5 mph	-	N/A	Mostly Cloudy
12:51 PM	54.0 °F	-	36.0 °F	51%	30.37 in	10.0 mi	East	10.4 mph	-	N/A	Scattered Clouds
1:51 PM	55.0 °F	-	35.1 °F	47%	30.37 in	10.0 mi	East	6.9 mph	-	N/A	Scattered Clouds
2:51 PM	54.0 °F	-	35.1 °F	49%	30.34 in	10.0 mi	East	11.5 mph	17.3 mph	N/A	Mostly Cloudy
3:51 PM	55.9 °F	-	36.0 °F	47%	30.33 in	10.0 mi	East	11.5 mph	-	N/A	Partly Cloudy
4:51 PM	55.9 °F	-	37.0 °F	49%	30.33 in	10.0 mi	East	10.4 mph	-	N/A	Scattered Clouds
5:51 PM	55.0 °F	-	37.0 °F	51%	30.33 in	10.0 mi	East	5.8 mph	-	N/A	Scattered Clouds
6:51 PM	52.0 °F	-	37.0 °F	57%	30.32 in	10.0 mi	East	8.1 mph	-	N/A	Partly Cloudy
7:51 PM	50.0 °F	-	35.6 °F	58%	30.30 in	10.0 mi	East	6.9 mph	-	N/A	Partly Cloudy
8:51 PM	46.9 °F	-	37.0 °F	68%	30.31 in	10.0 mi	NE	6.9 mph	-	N/A	Clear
9:51 PM	46.0 °F	42.5 °F	37.0 °F	71%	30.31 in	10.0 mi	East	6.9 mph	-	N/A	Clear
10:51 PM	45.0 °F	40.6 °F	37.0 °F	74%	30.31 in	10.0 mi	East	8.1 mph	-	N/A	Clear
11:51 PM	45.0 °F	41.2 °F	36.0 °F	71%	30.30 in	10.0 mi	East	6.9 mph	-	N/A	Clear
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