Summer weather

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

Temperatures

Maximum Temperatures

Period	Houston	Philadelphia
Jun 1	32.3°C	26.2°C
Jun 8	34.2°C	26.5°C
Jun 15	33.9°C	28.0°C
Jun 22	33.2°C	29.5°C
Jul 1	33.6°C	30.9°C
Jul 8	33.9°C	30.7°C
Jul 15	34.4°C	31.8°C
Jul 22	33.6°C	30.9°C
Aug 1	34.6°C	30.5°C
Aug 8	35.1°C	30.3°C
Aug 15	35.3°C	29.3°C
Aug 22	33.3°C	29.3°C
Average	34.0°C	29.5°C

Minimum Temperatures

Period	Houston	Philadelphia
Jun 1	23.9°C	16.6°C
Jun 8	24.7°C	17.4°C
Jun 15	25.3°C	18.5°C
Jun 22	25.5°C	20.0°C
Jul 1	25.6°C	21.8°C
Jul 8	25.7°C	22.0°C
Jul 15	25.7°C	22.8°C
Jul 22	25.8°C	22.3°C
Aug 1	26.1°C	22.2°C
Aug 8	26.6°C	22.3°C
Aug 15	26.7°C	21.4°C
Aug 22	26.1°C	21.1°C
Average	25.6°C	20.7°C

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

Conditions

Sunny Weather

Period	Houston	Philadelphia
Jun 1	5.4 hours/day	6.4 hours/day
Jun 8	8.5 hours/day	6.4 hours/day
Jun 15	6.1 hours/day	7.2 hours/day
Jun 22	4.2 hours/day	7.8 hours/day
Jul 1	4.8 hours/day	6.4 hours/day
Jul 8	5.8 hours/day	7.3 hours/day
Jul 15	6.1 hours/day	7.1 hours/day
Jul 22	5.7 hours/day	6.9 hours/day
Aug 1	6.2 hours/day	5.6 hours/day
Aug 8	6.8 hours/day	6.2 hours/day
Aug 15	7.1 hours/day	5.0 hours/day
Aug 22	4.2 hours/day	6.3 hours/day
Average	5.9 hours/day	6.6 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	Houston	Philadelphia
Jun 1	5.2mm	2.0mm
Jun 8	0.8mm	3.4mm
Jun 15	6.3mm	3.6mm
Jun 22	5.9mm	4.4mm
Jul 1	5.7mm	4.9mm
Jul 8	4.7mm	3.7mm
Jul 15	3.0mm	3.9mm
Jul 22	3.7mm	4.5mm
Aug 1	3.8mm	5.0mm
Aug 8	2.8mm	3.4mm
Aug 15	2.5mm	3.7mm
Aug 22	11.5mm	3.7mm
Average	4.7mm	3.9mm

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

Wind Speed

Period	Houston	Philadelphia
Jun 1	16.3km/h	16.2km/h
Jun 8	17.6km/h	16.6km/h
Jun 15	19.7km/h	16.9km/h
Jun 22	18.5km/h	17.3km/h
Jul 1	16.4km/h	13.9km/h
Jul 8	16.7km/h	15.2km/h
Jul 15	17.5km/h	14.5km/h
Jul 22	16.7km/h	14.4km/h
Aug 1	16.2km/h	14.8km/h
Aug 8	17.6km/h	14.4km/h
Aug 15	16.7km/h	14.1km/h
Aug 22	17.5km/h	14.5km/h
Average	17.3km/h	15.2km/h

Humidity

Period	Houston	Philadelphia
Jun 1	69.7%	62.0%
Jun 8	62.3%	64.1%
Jun 15	66.4%	63.4%
Jun 22	70.0%	63.1%
Jul 1	69.2%	64.8%
Jul 8	69.9%	65.9%
Jul 15	69.0%	63.3%
Jul 22	66.9%	60.3%
Aug 1	63.9%	62.8%
Aug 8	66.7%	60.7%
Aug 15	63.7%	64.2%
Aug 22	67.2%	61.9%
Average	67.1%	63.0%

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Astronomy

Sunrise Time

Period	Houston	Philadelphia
Jun 1	6:20	5:33
Jun 8	6:20	5:32
Jun 15	6:21	5:32
Jun 22	6:23	5:34
Jul 1	6:26	5:38
Jul 8	6:29	5:42
Jul 15	6:32	5:47
Jul 22	6:38	5:55
Aug 1	6:43	6:02
Aug 8	6:47	6:08
Aug 15	6:51	6:15
Aug 22	6:56	6:23
Average	6:36	5:48

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

Sunset Time

Period	Houston	Philadelphia
Jun 1	20:19	20:25
Jun 8	20:22	20:29
Jun 15	20:24	20:32
Jun 22	20:26	20:33
Jul 1	20:26	20:32
Jul 8	20:25	20:30
Jul 15	20:22	20:26
Jul 22	20:17	20:19
Aug 1	20:11	20:11
Aug 8	20:06	20:02
Aug 15	19:59	19:53
Aug 22	19:50	19:41
Average	20:18	20:18

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

Useful Day Length

Period	Houston	Philadelphia
Jun 1	13:19 hours	13:25 hours
Jun 8	13:22 hours	13:29 hours
Jun 15	13:24 hours	13:32 hours
Jun 22	13:26 hours	13:33 hours
Jul 1	13:26 hours	13:32 hours
Jul 8	13:25 hours	13:30 hours
Jul 15	13:22 hours	13:26 hours
Jul 22	13:17 hours	13:19 hours
Aug 1	13:11 hours	13:11 hours
Aug 8	13:06 hours	13:02 hours
Aug 15	12:59 hours	12:53 hours
Aug 22	12:50 hours	12:41 hours
Average	13:18 hours	13:18 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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