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Chicago US
Los Angeles US

Autumn weather

Calculations are based on the last 8 years of historical weather data.

Temperatures

Maximum Temperatures

Period	Chicago	Los Angeles
Sep 1	77.3°F	90.3°F
Sep 8	74.4°F	87.2°F
Sep 15	77.5°F	80.9°F
Sep 22	71.0°F	83.4°F
Oct 1	68.9°F	84.7°F
Oct 8	65.1°F	80.0°F
Oct 15	59.9°F	83.4°F
Oct 22	55.7°F	78.8°F
Nov 1	53.4°F	75.7°F
Nov 8	47.6°F	75.0°F
Nov 15	45.1°F	74.4°F
Nov 22	42.8°F	71.6°F
Average	80.5°F	61.6°F

Minimum Temperatures

Period	Chicago	Los Angeles
Sep 1	65.1°F	71.6°F
Sep 8	63.1°F	69.8°F
Sep 15	65.3°F	64.7°F
Sep 22	60.6°F	65.1°F
Oct 1	57.7°F	65.3°F
Oct 8	53.6°F	62.4°F
Oct 15	47.3°F	63.8°F
Oct 22	46.4°F	60.9°F
Nov 1	43.3°F	58.2°F
Nov 8	37.0°F	55.9°F
Nov 15	35.4°F	56.3°F
Nov 22	33.8°F	54.5°F
Average	62.4°F	50.7°F

Maximum/minimum temperature averages are computed by averaging the max/min temperature of each day for a given period.

Conditions

Sunny Weather

Period	Chicago	Los Angeles
Sep 1	7.5 hours/day	12.2 hours/day
Sep 8	7.4 hours/day	11.5 hours/day
Sep 15	7.5 hours/day	9.8 hours/day
Sep 22	6.8 hours/day	10.3 hours/day
Oct 1	4.8 hours/day	10.2 hours/day
Oct 8	5.3 hours/day	10.8 hours/day
Oct 15	5.8 hours/day	9.7 hours/day
Oct 22	3.1 hours/day	8.6 hours/day
Nov 1	4.6 hours/day	8.0 hours/day
Nov 8	4.4 hours/day	8.5 hours/day
Nov 15	2.3 hours/day	8.0 hours/day
Nov 22	3.5 hours/day	7.2 hours/day
Average	9.6 hours/day	5.2 hours/day

Sun hours are computed from the number of hours of direct sunlight. The length of the day can affect these measurements; for example, northern cities have longer days in summer.

Precipitation Levels

Period	Chicago	Los Angeles
Sep 1	0.1in	0.0in
Sep 8	0.1in	0.0in
Sep 15	0.1in	0.0in
Sep 22	0.1in	0.0in
Oct 1	0.1in	0.0in
Oct 8	0.2in	0.0in
Oct 15	0.1in	0.0in
Oct 22	0.2in	0.0in
Nov 1	0.1in	0.0in
Nov 8	0.1in	0.0in
Nov 15	0.1in	0.0in
Nov 22	0.1in	0.0in
Average	0.0in	0.1in

Average amount of precipitation that falls in a form of a rain, snow, sleet or hail.

Wind Speed

Period	Chicago	Los Angeles
Sep 1	12.7mph	8.7mph
Sep 8	11.4mph	8.7mph
Sep 15	11.2mph	8.5mph
Sep 22	13.3mph	8.2mph
Oct 1	12.8mph	7.7mph
Oct 8	13.9mph	8.0mph
Oct 15	14.9mph	7.6mph
Oct 22	14.9mph	7.4mph
Nov 1	14.5mph	7.4mph
Nov 8	14.5mph	7.4mph
Nov 15	15.9mph	6.8mph
Nov 22	14.5mph	7.0mph
Average	7.8mph	13.7mph

Humidity

Period	Chicago	Los Angeles
Sep 1	63.7%	53.0%
Sep 8	65.3%	52.6%
Sep 15	67.2%	59.9%
Sep 22	66.0%	55.5%
Oct 1	66.0%	49.2%
Oct 8	64.6%	53.6%
Oct 15	59.3%	43.8%
Oct 22	67.5%	46.6%
Nov 1	65.2%	47.1%
Nov 8	64.5%	41.3%
Nov 15	70.6%	41.3%
Nov 22	69.8%	43.5%
Average	49.0%	65.8%

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Astronomy

Sunrise Time

Period	Chicago	Los Angeles
Sep 1	6:20	6:29
Sep 8	6:27	6:34
Sep 15	6:34	6:39
Sep 22	6:42	6:44
Oct 1	6:51	6:50
Oct 8	6:59	6:56
Oct 15	7:07	7:02
Oct 22	7:17	7:09
Nov 1	7:10	6:59
Nov 8	6:35	6:23
Nov 15	6:44	6:29
Nov 22	6:53	6:37
Average	6:42	6:48

Sunrise times are output in the local timezone of each place.

Sunset Time

Period	Chicago	Los Angeles
Sep 1	19:19	19:15
Sep 8	19:07	19:05
Sep 15	18:54	18:55
Sep 22	18:40	18:44
Oct 1	18:26	18:33
Oct 8	18:15	18:24
Oct 15	18:04	18:15
Oct 22	17:52	18:05
Nov 1	17:24	17:41
Nov 8	16:33	16:52
Nov 15	16:27	16:48
Nov 22	16:22	16:45
Average	18:06	17:54

Sunset times are output in the local timezone of each place.

Day Length

Period	Chicago	Los Angeles
Sep 1	12:59 hours	12:46 hours
Sep 8	12:39 hours	12:31 hours
Sep 15	12:20 hours	12:16 hours
Sep 22	11:58 hours	11:59 hours
Oct 1	11:35 hours	11:42 hours
Oct 8	11:16 hours	11:28 hours
Oct 15	10:57 hours	11:13 hours
Oct 22	10:35 hours	10:56 hours
Nov 1	10:13 hours	10:41 hours
Nov 8	9:57 hours	10:29 hours
Nov 15	9:43 hours	10:19 hours
Nov 22	9:28 hours	10:08 hours
Average	11:24 hours	11:06 hours

Average length of the day from sunrise to sunset.

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Autumn weather

Temperatures

Conditions

Astronomy

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