Union City, CA Weather - Daily / Monthly Weather History From This Station

Daily / Monthly Weather History From This Station


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Daily Report for the month of April 2024



Apr 1 Average and Extremes
Average temperature 58.0�F
Average humidity 68%
Average dewpoint 46.5�F
Average barometer 30.0 in.
Average windspeed 2.3 mph
Average gustspeed 3.7 mph
Average direction 263� ( W )
Rainfall for month 0.00 in.
Rainfall for year 14.89 in.
Maximum rain per minute 0.00 in. on day 01 at time 00:00
Maximum temperature 71.4�F on day 01 at time 15:58
Minimum temperature 45.6�F on day 01 at time 06:54
Maximum humidity 92% on day 01 at time 07:44
Minimum humidity 38% on day 01 at time 15:53
Maximum pressure 30.119 in. on day 01 at time 23:02
Minimum pressure 29.785 in. on day 01 at time 00:04
Maximum windspeed 11.5 mph on day 01 at time 16:59
Maximum gust speed 19.6 mph from 288 �(WNW) on day 01 at time 16:59
Maximum heat index 77.5�F on day 01 at time 18:14

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Apr 2 Average and Extremes
Average temperature 59.1�F
Average humidity 69%
Average dewpoint 48.5�F
Average barometer 30.2 in.
Average windspeed 2.2 mph
Average gustspeed 3.6 mph
Average direction 272� ( W )
Rainfall for month 0.00 in.
Rainfall for year 14.89 in.
Maximum rain per minute 0.00 in. on day 02 at time 23:59
Maximum temperature 73.1�F on day 02 at time 16:56
Minimum temperature 48.1�F on day 02 at time 03:39
Maximum humidity 86% on day 02 at time 23:59
Minimum humidity 38% on day 02 at time 15:23
Maximum pressure 30.252 in. on day 02 at time 22:02
Minimum pressure 30.115 in. on day 02 at time 00:03
Maximum windspeed 10.4 mph on day 02 at time 18:14
Maximum gust speed 17.3 mph from 257 �(WSW) on day 02 at time 18:13
Maximum heat index 77.1�F on day 02 at time 15:25

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Apr 3 Average and Extremes
Average temperature 55.9�F
Average humidity 79%
Average dewpoint 49.4�F
Average barometer 30.1 in.
Average windspeed 5.5 mph
Average gustspeed 8.5 mph
Average direction 269� ( W )
Rainfall for month 0.00 in.
Rainfall for year 14.89 in.
Maximum rain per minute 0.00 in. on day 03 at time 23:59
Maximum temperature 61.9�F on day 03 at time 15:06
Minimum temperature 52.6�F on day 03 at time 23:59
Maximum humidity 89% on day 03 at time 04:16
Minimum humidity 62% on day 03 at time 23:59
Maximum pressure 30.247 in. on day 03 at time 00:18
Minimum pressure 29.955 in. on day 03 at time 23:59
Maximum windspeed 15.0 mph on day 03 at time 20:07
Maximum gust speed 24.2 mph from 281 �( W ) on day 03 at time 18:38
Maximum heat index 61.9�F on day 03 at time 15:06

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Apr 4 Average and Extremes
Average temperature 48.8�F
Average humidity 75%
Average dewpoint 40.6�F
Average barometer 29.8 in.
Average windspeed 4.1 mph
Average gustspeed 6.9 mph
Average direction 212� (SSW)
Rainfall for month 0.58 in.
Rainfall for year 15.47 in.
Maximum rain per minute 0.01 in. on day 04 at time 21:58
Maximum temperature 56.4�F on day 04 at time 14:46
Minimum temperature 41.8�F on day 04 at time 21:54
Maximum humidity 91% on day 04 at time 23:59
Minimum humidity 48% on day 04 at time 15:40
Maximum pressure 29.955 in. on day 04 at time 00:03
Minimum pressure 29.656 in. on day 04 at time 18:02
Maximum windspeed 13.8 mph on day 04 at time 18:03
Maximum gust speed 21.9 mph from 164 �(SSE) on day 04 at time 15:28
Maximum heat index 56.4�F on day 04 at time 14:46

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Apr 5 Average and Extremes
Average temperature 49.2�F
Average humidity 76%
Average dewpoint 41.3�F
Average barometer 29.9 in.
Average windspeed 4.7 mph
Average gustspeed 7.4 mph
Average direction 264� ( W )
Rainfall for month 0.59 in.
Rainfall for year 15.48 in.
Maximum rain per minute 0.01 in. on day 05 at time 01:06
Maximum temperature 57.6�F on day 05 at time 14:55
Minimum temperature 41.5�F on day 05 at time 02:33
Maximum humidity 94% on day 05 at time 07:41
Minimum humidity 53% on day 05 at time 13:37
Maximum pressure 30.086 in. on day 05 at time 23:59
Minimum pressure 29.740 in. on day 05 at time 04:17
Maximum windspeed 17.3 mph on day 05 at time 18:18
Maximum gust speed 26.5 mph from 277 �( W ) on day 05 at time 17:15
Maximum heat index 57.5�F on day 05 at time 14:55

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Apr 6 Average and Extremes
Average temperature 51.3�F
Average humidity 70%
Average dewpoint 41.2�F
Average barometer 30.2 in.
Average windspeed 3.3 mph
Average gustspeed 5.6 mph
Average direction 270� ( W )
Rainfall for month 0.59 in.
Rainfall for year 15.48 in.
Maximum rain per minute 0.00 in. on day 06 at time 23:59
Maximum temperature 59.4�F on day 06 at time 15:38
Minimum temperature 42.5�F on day 06 at time 03:34
Maximum humidity 87% on day 06 at time 04:45
Minimum humidity 48% on day 06 at time 14:14
Maximum pressure 30.283 in. on day 06 at time 12:17
Minimum pressure 30.086 in. on day 06 at time 00:03
Maximum windspeed 11.5 mph on day 06 at time 17:34
Maximum gust speed 18.4 mph from 232 �( SW) on day 06 at time 16:35
Maximum heat index 59.4�F on day 06 at time 15:38

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Apr 7 Average and Extremes
Average temperature 52.9�F
Average humidity 74%
Average dewpoint 44.7�F
Average barometer 30.1 in.
Average windspeed 4.2 mph
Average gustspeed 6.4 mph
Average direction 264� ( W )
Rainfall for month 0.59 in.
Rainfall for year 15.48 in.
Maximum rain per minute 0.00 in. on day 07 at time 23:59
Maximum temperature 60.7�F on day 07 at time 13:35
Minimum temperature 43.0�F on day 07 at time 06:51
Maximum humidity 89% on day 07 at time 07:23
Minimum humidity 55% on day 07 at time 12:59
Maximum pressure 30.217 in. on day 07 at time 00:33
Minimum pressure 30.057 in. on day 07 at time 20:17
Maximum windspeed 16.1 mph on day 07 at time 16:48
Maximum gust speed 21.9 mph from 303 �(WNW) on day 07 at time 17:41
Maximum heat index 60.7�F on day 07 at time 13:35

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Apr 8 Average and Extremes
Average temperature 55.1�F
Average humidity 74%
Average dewpoint 46.6�F
Average barometer 30.1 in.
Average windspeed 2.9 mph
Average gustspeed 4.5 mph
Average direction 270� ( W )
Rainfall for month 0.59 in.
Rainfall for year 15.48 in.
Maximum rain per minute 0.00 in. on day 08 at time 23:59
Maximum temperature 67.5�F on day 08 at time 15:00
Minimum temperature 43.6�F on day 08 at time 06:50
Maximum humidity 92% on day 08 at time 04:14
Minimum humidity 48% on day 08 at time 13:46
Maximum pressure 30.079 in. on day 08 at time 10:02
Minimum pressure 30.027 in. on day 08 at time 17:02
Maximum windspeed 12.7 mph on day 08 at time 15:58
Maximum gust speed 17.3 mph from 277 �( W ) on day 08 at time 18:24
Maximum heat index 67.5�F on day 08 at time 15:00

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Apr 9 Average and Extremes
Average temperature 59.6�F
Average humidity 71%
Average dewpoint 49.3�F
Average barometer 30.1 in.
Average windspeed 2.3 mph
Average gustspeed 3.7 mph
Average direction 267� ( W )
Rainfall for month 0.59 in.
Rainfall for year 15.48 in.
Maximum rain per minute 0.00 in. on day 09 at time 23:59
Maximum temperature 73.8�F on day 09 at time 16:11
Minimum temperature 46.3�F on day 09 at time 05:22
Maximum humidity 90% on day 09 at time 07:06
Minimum humidity 36% on day 09 at time 15:09
Maximum pressure 30.119 in. on day 09 at time 10:47
Minimum pressure 30.053 in. on day 09 at time 18:47
Maximum windspeed 10.4 mph on day 09 at time 15:54
Maximum gust speed 15.0 mph from 300 �(WNW) on day 09 at time 16:08
Maximum heat index 77.3�F on day 09 at time 12:20

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Apr 10 Average and Extremes
Average temperature 61.9�F
Average humidity 76%
Average dewpoint 53.7�F
Average barometer 30.0 in.
Average windspeed 2.4 mph
Average gustspeed 3.8 mph
Average direction 264� ( W )
Rainfall for month 0.59 in.
Rainfall for year 15.48 in.
Maximum rain per minute 0.00 in. on day 10 at time 23:59
Maximum temperature 77.1�F on day 10 at time 16:17
Minimum temperature 48.4�F on day 10 at time 06:36
Maximum humidity 91% on day 10 at time 07:31
Minimum humidity 51% on day 10 at time 15:32
Maximum pressure 30.100 in. on day 10 at time 00:03
Minimum pressure 29.963 in. on day 10 at time 19:02
Maximum windspeed 10.4 mph on day 10 at time 19:35
Maximum gust speed 15.0 mph from 263 �( W ) on day 10 at time 16:20
Maximum heat index 78.8�F on day 10 at time 16:14

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Apr 11 Average and Extremes
Average temperature 62.0�F
Average humidity 76%
Average dewpoint 54.0�F
Average barometer 29.9 in.
Average windspeed 3.2 mph
Average gustspeed 4.9 mph
Average direction 264� ( W )
Rainfall for month 0.59 in.
Rainfall for year 15.48 in.
Maximum rain per minute 0.00 in. on day 11 at time 23:59
Maximum temperature 76.5�F on day 11 at time 14:18
Minimum temperature 52.1�F on day 11 at time 06:37
Maximum humidity 93% on day 11 at time 07:33
Minimum humidity 48% on day 11 at time 16:04
Maximum pressure 29.977 in. on day 11 at time 00:03
Minimum pressure 29.761 in. on day 11 at time 20:02
Maximum windspeed 12.7 mph on day 11 at time 16:53
Maximum gust speed 18.4 mph from 290 �(WNW) on day 11 at time 16:36
Maximum heat index 78.3�F on day 11 at time 14:17

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Apr 12 Average and Extremes
Average temperature 57.6�F
Average humidity 74%
Average dewpoint 49.2�F
Average barometer 29.7 in.
Average windspeed 5.5 mph
Average gustspeed 8.9 mph
Average direction 241� (WSW)
Rainfall for month 0.59 in.
Rainfall for year 15.48 in.
Maximum rain per minute 0.00 in. on day 12 at time 23:59
Maximum temperature 65.6�F on day 12 at time 16:26
Minimum temperature 52.5�F on day 12 at time 07:07
Maximum humidity 88% on day 12 at time 04:34
Minimum humidity 58% on day 12 at time 16:48
Maximum pressure 29.769 in. on day 12 at time 23:17
Minimum pressure 29.685 in. on day 12 at time 06:02
Maximum windspeed 13.8 mph on day 12 at time 17:22
Maximum gust speed 21.9 mph from 242 �(WSW) on day 12 at time 17:06
Maximum heat index 65.6�F on day 12 at time 16:26

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Apr 13 Average and Extremes
Average temperature 52.2�F
Average humidity 78%
Average dewpoint 45.3�F
Average barometer 29.8 in.
Average windspeed 4.9 mph
Average gustspeed 8.3 mph
Average direction 144� ( SE)
Rainfall for month 1.10 in.
Rainfall for year 15.99 in.
Maximum rain per minute 0.02 in. on day 13 at time 03:56
Maximum temperature 58.6�F on day 13 at time 00:52
Minimum temperature 47.0�F on day 13 at time 08:41
Maximum humidity 91% on day 13 at time 09:29
Minimum humidity 67% on day 13 at time 16:35
Maximum pressure 29.892 in. on day 13 at time 22:17
Minimum pressure 29.741 in. on day 13 at time 03:02
Maximum windspeed 12.7 mph on day 13 at time 11:33
Maximum gust speed 20.7 mph from 074 �(ENE) on day 13 at time 01:23
Maximum heat index 58.6�F on day 13 at time 00:51

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Apr 14 Average and Extremes
Average temperature 53.8�F
Average humidity 76%
Average dewpoint 46.3�F
Average barometer 30.0 in.
Average windspeed 4.0 mph
Average gustspeed 6.3 mph
Average direction 276� ( W )
Rainfall for month 1.13 in.
Rainfall for year 16.02 in.
Maximum rain per minute 0.01 in. on day 14 at time 01:40
Maximum temperature 61.9�F on day 14 at time 16:17
Minimum temperature 46.6�F on day 14 at time 06:32
Maximum humidity 86% on day 14 at time 07:16
Minimum humidity 59% on day 14 at time 16:34
Maximum pressure 30.107 in. on day 14 at time 22:02
Minimum pressure 29.876 in. on day 14 at time 00:03
Maximum windspeed 13.8 mph on day 14 at time 17:32
Maximum gust speed 19.6 mph from 273 �( W ) on day 14 at time 18:40
Maximum heat index 61.9�F on day 14 at time 16:17

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Apr 15 Average and Extremes
Average temperature 57.4�F
Average humidity 76%
Average dewpoint 49.9�F
Average barometer 30.1 in.
Average windspeed 2.4 mph
Average gustspeed 4.1 mph
Average direction 270� ( W )
Rainfall for month 1.13 in.
Rainfall for year 16.02 in.
Maximum rain per minute 0.00 in. on day 15 at time 23:59
Maximum temperature 65.9�F on day 15 at time 16:48
Minimum temperature 52.9�F on day 15 at time 23:59
Maximum humidity 84% on day 15 at time 23:59
Minimum humidity 60% on day 15 at time 15:32
Maximum pressure 30.171 in. on day 15 at time 11:17
Minimum pressure 30.078 in. on day 15 at time 03:02
Maximum windspeed 11.5 mph on day 15 at time 18:03
Maximum gust speed 16.1 mph from 274 �( W ) on day 15 at time 18:03
Maximum heat index 65.9�F on day 15 at time 16:48

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Apr 16 Average and Extremes
Average temperature 60.5�F
Average humidity 76%
Average dewpoint 52.6�F
Average barometer 30.1 in.
Average windspeed 2.3 mph
Average gustspeed 3.8 mph
Average direction 268� ( W )
Rainfall for month 1.13 in.
Rainfall for year 16.02 in.
Maximum rain per minute 0.00 in. on day 16 at time 23:59
Maximum temperature 73.1�F on day 16 at time 16:46
Minimum temperature 48.2�F on day 16 at time 06:52
Maximum humidity 93% on day 16 at time 07:18
Minimum humidity 56% on day 16 at time 16:46
Maximum pressure 30.112 in. on day 16 at time 08:17
Minimum pressure 30.012 in. on day 16 at time 19:47
Maximum windspeed 12.7 mph on day 16 at time 15:04
Maximum gust speed 19.6 mph from 288 �(WNW) on day 16 at time 15:00
Maximum heat index 76.8�F on day 16 at time 16:46

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Apr 17 Average and Extremes
Average temperature 63.0�F
Average humidity 77%
Average dewpoint 55.2�F
Average barometer 30.0 in.
Average windspeed 2.5 mph
Average gustspeed 3.9 mph
Average direction 268� ( W )
Rainfall for month 1.13 in.
Rainfall for year 16.02 in.
Maximum rain per minute 0.00 in. on day 17 at time 23:59
Maximum temperature 76.8�F on day 17 at time 16:04
Minimum temperature 52.4�F on day 17 at time 06:40
Maximum humidity 90% on day 17 at time 07:17
Minimum humidity 58% on day 17 at time 15:49
Maximum pressure 30.027 in. on day 17 at time 00:18
Minimum pressure 29.896 in. on day 17 at time 20:17
Maximum windspeed 11.5 mph on day 17 at time 17:38
Maximum gust speed 17.3 mph from 250 �(WSW) on day 17 at time 17:01
Maximum heat index 78.6�F on day 17 at time 16:04

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Apr 18 Average and Extremes
Average temperature 61.7�F
Average humidity 76%
Average dewpoint 54.0�F
Average barometer 29.9 in.
Average windspeed 2.5 mph
Average gustspeed 4.1 mph
Average direction 271� ( W )
Rainfall for month 1.13 in.
Rainfall for year 16.02 in.
Maximum rain per minute 0.00 in. on day 18 at time 23:59
Maximum temperature 73.7�F on day 18 at time 13:33
Minimum temperature 52.9�F on day 18 at time 06:39
Maximum humidity 91% on day 18 at time 07:15
Minimum humidity 58% on day 18 at time 13:55
Maximum pressure 29.919 in. on day 18 at time 00:03
Minimum pressure 29.862 in. on day 18 at time 19:32
Maximum windspeed 12.7 mph on day 18 at time 14:04
Maximum gust speed 17.3 mph from 249 �(WSW) on day 18 at time 14:29
Maximum heat index 76.8�F on day 18 at time 13:33

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Average and Extremes for Month of April 2024 up to day 18
Average temperature 56.7�F
Average humidity 75%
Average dewpoint 48.2�F
Average barometer 29.995 in.
Average windspeed 3.4 mph
Average gustspeed 5.5 mph
Average direction 261� ( W )
Rainfall for month 1.13 in.
Rainfall for year 16.13 in.
Maximum rain per minute 0.02 in on day 13 at time 03:56
Maximum temperature 77.1�F on day 10 at time 16:17
Minimum temperature 41.5�F on day 05 at time 02:33
Maximum humidity 94% on day 05 at time 07:41
Minimum humidity 36% on day 09 at time 15:09
Maximum pressure 30.28 in. on day 06 at time 12:17
Minimum pressure 29.66 in. on day 04 at time 18:02
Maximum windspeed 17.3 mph from 277�( W ) on day 05 at time 18:18
Maximum gust speed 26.5 mph from 270�( W ) on day 05 at time 17:15
Maximum heat index 78.8�F on day 10 at time 16:14
Growing degrees days195.2 GDD


Day, Sunshine Hours, ET, Max Solar, UV
01 09:06hrs ET :0.15 in. 893.0 W/m� 4.9 uv
02 09:00hrs ET :0.15 in. 898.0 W/m� 5.4 uv
03 04:24hrs ET :0.12 in. 1146.0 W/m� 5.6 uv
04 02:36hrs ET :0.09 in. 1234.0 W/m� 4.4 uv
05 06:06hrs ET :0.14 in. 1213.0 W/m� 4.2 uv
06 09:18hrs ET :0.15 in. 912.0 W/m� 4.6 uv
07 08:42hrs ET :0.14 in. 986.0 W/m� 4.4 uv
08 08:30hrs ET :0.14 in. 909.0 W/m� 4.9 uv
09 09:06hrs ET :0.15 in. 912.0 W/m� 5.1 uv
10 08:30hrs ET :0.16 in. 919.0 W/m� 5.1 uv
11 09:06hrs ET :0.19 in. 909.0 W/m� 5.4 uv
12 07:54hrs ET :0.17 in. 1053.0 W/m� 5.3 uv
13 00:06hrs ET :0.06 in. 420.0 W/m� 1.1 uv
14 05:48hrs ET :0.11 in. 1334.0 W/m� 4.8 uv
15 04:24hrs ET :0.12 in. 990.0 W/m� 5.5 uv
16 09:24hrs ET :0.15 in. 951.0 W/m� 5.7 uv
17 08:30hrs ET :0.17 in. 1013.0 W/m� 6.1 uv
18 08:36hrs ET :0.18 in. 1171.0 W/m� 5.6 uv
Sunshine hours month to date 129:03 hrs
Sunshine hours year to date 541:09 hrs


Daily Rain Totals
00.58 in. on day 4
00.01 in. on day 5
00.51 in. on day 13
00.03 in. on day 14