Spring weather

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

Temperatures

Maximum Temperatures

Period	San Francisco	Porto Alegre
Mar 1	56.5°F	88.7°F
Mar 8	59.0°F	86.5°F
Mar 15	58.5°F	84.4°F
Mar 22	59.9°F	83.5°F
Apr 1	61.0°F	79.3°F
Apr 8	61.7°F	79.5°F
Apr 15	62.2°F	77.4°F
Apr 22	65.1°F	78.6°F
May 1	65.3°F	74.8°F
May 8	65.5°F	71.8°F
May 15	64.6°F	69.4°F
May 22	66.0°F	69.4°F
Average	78.6°F	62.1°F

Minimum Temperatures

Period	San Francisco	Porto Alegre
Mar 1	46.8°F	70.5°F
Mar 8	48.2°F	68.4°F
Mar 15	47.8°F	68.0°F
Mar 22	48.6°F	66.6°F
Apr 1	49.3°F	65.1°F
Apr 8	49.1°F	64.8°F
Apr 15	49.8°F	62.1°F
Apr 22	51.4°F	62.4°F
May 1	51.3°F	62.1°F
May 8	51.8°F	57.9°F
May 15	52.2°F	55.6°F
May 22	52.5°F	56.1°F
Average	63.3°F	49.9°F

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

Conditions

Sunny Weather

Period	San Francisco	Porto Alegre
Mar 1	4.5 hours/day	5.8 hours/day
Mar 8	5.7 hours/day	6.3 hours/day
Mar 15	5.2 hours/day	4.6 hours/day
Mar 22	6.4 hours/day	5.5 hours/day
Apr 1	6.1 hours/day	4.2 hours/day
Apr 8	9.1 hours/day	4.5 hours/day
Apr 15	8.3 hours/day	5.2 hours/day
Apr 22	9.3 hours/day	5.8 hours/day
May 1	10.3 hours/day	4.1 hours/day
May 8	10.8 hours/day	4.9 hours/day
May 15	10.1 hours/day	5.0 hours/day
May 22	10.8 hours/day	4.1 hours/day
Average	5.0 hours/day	8.0 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	San Francisco	Porto Alegre
Mar 1	0.1in	0.1in
Mar 8	0.2in	0.1in
Mar 15	0.1in	0.2in
Mar 22	0.1in	0.1in
Apr 1	0.1in	0.2in
Apr 8	0.0in	0.1in
Apr 15	0.0in	0.1in
Apr 22	0.0in	0.1in
May 1	0.0in	0.4in
May 8	0.0in	0.3in
May 15	0.0in	0.2in
May 22	0.0in	0.3in
Average	0.2in	0.1in

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

Wind Speed

Period	San Francisco	Porto Alegre
Mar 1	12.9mph	10.1mph
Mar 8	12.0mph	10.1mph
Mar 15	10.9mph	10.3mph
Mar 22	12.6mph	10.1mph
Apr 1	12.3mph	9.5mph
Apr 8	12.6mph	9.4mph
Apr 15	11.4mph	9.3mph
Apr 22	12.2mph	8.6mph
May 1	12.3mph	8.4mph
May 8	12.3mph	7.8mph
May 15	13.3mph	8.4mph
May 22	12.1mph	9.1mph
Average	9.3mph	12.2mph

Humidity

Period	San Francisco	Porto Alegre
Mar 1	73.1%	68.6%
Mar 8	75.2%	67.7%
Mar 15	74.9%	70.6%
Mar 22	73.4%	71.3%
Apr 1	72.3%	74.6%
Apr 8	72.1%	72.9%
Apr 15	73.2%	72.4%
Apr 22	72.4%	72.2%
May 1	71.8%	79.3%
May 8	72.7%	76.6%
May 15	74.7%	76.7%
May 22	74.7%	77.3%
Average	73.4%	73.4%

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Astronomy

Sunrise Time

Period	San Francisco	Porto Alegre
Mar 1	6:37	6:17
Mar 8	6:52	6:22
Mar 15	7:16	6:27
Mar 22	7:03	6:32
Apr 1	6:50	6:37
Apr 8	6:40	6:41
Apr 15	6:30	6:46
Apr 22	6:19	6:51
May 1	6:10	6:56
May 8	6:03	7:00
May 15	5:58	7:05
May 22	5:52	7:10
Average	6:42	6:30

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

Sunset Time

Period	San Francisco	Porto Alegre
Mar 1	18:07	18:55
Mar 8	18:39	18:46
Mar 15	19:20	18:38
Mar 22	19:28	18:28
Apr 1	19:36	18:17
Apr 8	19:42	18:10
Apr 15	19:49	18:02
Apr 22	19:56	17:54
May 1	20:03	17:47
May 8	20:10	17:42
May 15	20:16	17:38
May 22	20:22	17:34
Average	18:12	19:36

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

Useful Day Length

Period	San Francisco	Porto Alegre
Mar 1	11:07 hours	11:55 hours
Mar 8	11:39 hours	11:46 hours
Mar 15	12:04 hours	11:38 hours
Mar 22	12:25 hours	11:28 hours
Apr 1	12:36 hours	11:17 hours
Apr 8	12:42 hours	11:10 hours
Apr 15	12:49 hours	11:02 hours
Apr 22	12:56 hours	10:54 hours
May 1	13:03 hours	10:47 hours
May 8	13:10 hours	10:42 hours
May 15	13:16 hours	10:33 hours
May 22	13:22 hours	10:25 hours
Average	11:06 hours	12:36 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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Spring weather

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