Autumn weather

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

Temperatures

Maximum Temperatures

Period	Las Vegas	Pittsburgh
Sep 1	99.9°F	80.4°F
Sep 8	94.5°F	78.1°F
Sep 15	90.7°F	79.2°F
Sep 22	89.6°F	73.6°F
Oct 1	86.5°F	72.3°F
Oct 8	81.1°F	68.5°F
Oct 15	80.1°F	61.7°F
Oct 22	73.9°F	61.0°F
Nov 1	71.1°F	57.9°F
Nov 8	64.6°F	51.6°F
Nov 15	64.2°F	47.1°F
Nov 22	59.2°F	45.7°F
Average	79.6°F	64.8°F

Minimum Temperatures

Period	Las Vegas	Pittsburgh
Sep 1	77.2°F	61.3°F
Sep 8	72.1°F	59.5°F
Sep 15	68.0°F	59.5°F
Sep 22	66.6°F	57.2°F
Oct 1	63.3°F	54.7°F
Oct 8	59.0°F	52.2°F
Oct 15	57.2°F	45.1°F
Oct 22	52.5°F	45.5°F
Nov 1	50.7°F	42.1°F
Nov 8	45.7°F	37.2°F
Nov 15	45.7°F	34.0°F
Nov 22	41.9°F	33.3°F
Average	58.3°F	48.5°F

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

Conditions

Sunny Weather

Period	Las Vegas	Pittsburgh
Sep 1	12.1 hours/day	6.4 hours/day
Sep 8	11.1 hours/day	5.1 hours/day
Sep 15	11.3 hours/day	7.3 hours/day
Sep 22	11.1 hours/day	4.6 hours/day
Oct 1	11.2 hours/day	4.0 hours/day
Oct 8	11.2 hours/day	5.2 hours/day
Oct 15	10.3 hours/day	4.2 hours/day
Oct 22	9.7 hours/day	3.6 hours/day
Nov 1	8.8 hours/day	4.5 hours/day
Nov 8	8.4 hours/day	4.5 hours/day
Nov 15	8.0 hours/day	1.9 hours/day
Nov 22	7.9 hours/day	2.4 hours/day
Average	10.1 hours/day	4.5 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	Las Vegas	Pittsburgh
Sep 1	0.0in	0.2in
Sep 8	0.0in	0.2in
Sep 15	0.0in	0.1in
Sep 22	0.0in	0.2in
Oct 1	0.0in	0.1in
Oct 8	0.0in	0.1in
Oct 15	0.0in	0.1in
Oct 22	0.0in	0.2in
Nov 1	0.0in	0.1in
Nov 8	0.0in	0.2in
Nov 15	0.0in	0.1in
Nov 22	0.0in	0.1in
Average	0.0in	0.2in

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

Wind Speed

Period	Las Vegas	Pittsburgh
Sep 1	9.1mph	7.9mph
Sep 8	10.9mph	7.6mph
Sep 15	12.4mph	6.7mph
Sep 22	9.1mph	8.5mph
Oct 1	7.7mph	7.5mph
Oct 8	10.2mph	8.9mph
Oct 15	8.6mph	9.5mph
Oct 22	9.3mph	9.0mph
Nov 1	8.8mph	9.2mph
Nov 8	7.6mph	8.9mph
Nov 15	7.8mph	10.4mph
Nov 22	7.4mph	9.9mph
Average	9.1mph	8.7mph

Humidity

Period	Las Vegas	Pittsburgh
Sep 1	23.9%	68.2%
Sep 8	23.1%	70.4%
Sep 15	21.2%	66.2%
Sep 22	20.9%	71.3%
Oct 1	21.9%	72.1%
Oct 8	21.5%	68.5%
Oct 15	22.4%	67.3%
Oct 22	24.7%	72.2%
Nov 1	27.5%	68.7%
Nov 8	27.4%	65.6%
Nov 15	30.0%	71.1%
Nov 22	34.5%	71.5%
Average	24.9%	69.4%

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Astronomy

Sunrise Time

Period	Las Vegas	Pittsburgh
Sep 1	6:14	6:50
Sep 8	6:20	6:57
Sep 15	6:25	7:04
Sep 22	6:32	7:12
Oct 1	6:38	7:20
Oct 8	6:44	7:27
Oct 15	6:50	7:35
Oct 22	6:58	7:44
Nov 1	6:43	7:30
Nov 8	6:14	7:02
Nov 15	6:20	7:10
Nov 22	6:28	7:19
Average	6:30	7:18

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

Sunset Time

Period	Las Vegas	Pittsburgh
Sep 1	19:04	19:47
Sep 8	18:53	19:35
Sep 15	18:43	19:24
Sep 22	18:31	19:10
Oct 1	18:19	18:57
Oct 8	18:10	18:46
Oct 15	18:01	18:35
Oct 22	17:50	18:23
Nov 1	17:18	17:50
Nov 8	16:35	17:06
Nov 15	16:31	17:00
Nov 22	16:27	16:56
Average	17:54	18:30

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

Useful Day Length

Period	Las Vegas	Pittsburgh
Sep 1	12:04 hours	12:47 hours
Sep 8	11:53 hours	12:35 hours
Sep 15	11:43 hours	12:20 hours
Sep 22	11:31 hours	11:58 hours
Oct 1	11:19 hours	11:37 hours
Oct 8	11:10 hours	11:19 hours
Oct 15	11:01 hours	10:60 hours
Oct 22	10:50 hours	10:40 hours
Nov 1	10:18 hours	10:20 hours
Nov 8	9:35 hours	10:04 hours
Nov 15	9:31 hours	9:50 hours
Nov 22	9:27 hours	9:37 hours
Average	10:54 hours	11:12 hours

Discards daylight hours before 7 AM. In places that are located to the west of the timezone, the sun rises and sets later compared to the cities that are located to the east. This means that the useful day length is longer in the cities located to the west of the time zone.

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Autumn weather

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Astronomy

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