Rockbottom Observatory

Daily / Monthly Weather History From This Station

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September 2025 August 2025 July 2025 June 2025 May 2025 April 2025 March 2025 February 2025 January 2025 December 2024 November 2024 October 2024 September 2024 August 2024 July 2023 June 2023 May 2023 April 2023 March 2023 February 2023 October 2022 September 2022 August 2022 July 2022 June 2022 May 2022 April 2022 March 2022 February 2022 January 2022 October 2021 September 2021 August 2021 July 2021 June 2021 May 2021 April 2021 March 2021 February 2021 January 2021 December 2020 November 2020 October 2020 September 2020 August 2020 July 2020 June 2020 May 2020 April 2020 March 2020 February 2020 January 2020 December 2019 November 2019 October 2019 September 2019 August 2019 July 2019 June 2019 May 2019 April 2019 March 2019 February 2019 January 2019 December 2018 November 2018 October 2018 September 2018 August 2018 July 2018 June 2018 May 2018 April 2018 March 2018 February 2018 January 2018 October 2017 September 2017 August 2017 July 2017 June 2017 May 2017 April 2017 March 2017 February 2017 January 2017 December 2016 November 2016 October 2016 September 2016 August 2016 July 2016 June 2016 May 2016 April 2016 March 2016

Daily Report for the month of September 2025

1 September Average and Extremes
Average temperature	62.6°F
Average humidity	80%
Average dewpoint	55.6°F
Average barometer	30.0 in.
Average windspeed	1.0 mph
Average gustspeed	2.1 mph
Average direction	157° (SSE)
Rainfall for month	0.00 in.
Rainfall for year	13.75 in.
Maximum rain per minute	0.00 in. on 01 at 00:00
Maximum temperature	76.6°F on 01 at 13:50
Minimum temperature	48.6°F on 01 at 06:03
Maximum humidity	99% on 01 at 08:08
Minimum humidity	51% on 01 at 14:18
Maximum pressure	30.076 in. on 01 at 11:29
Minimum pressure	30.000 in. on 01 at 01:43
Maximum windspeed	5.8 mph on 01 at 16:39
Maximum gust speed	10.4 mph from 136 °(SE) on 01 at 14:52
Maximum heat index	78.5°F on 01 at 13:50

24 Hour Graph of this day is not available (20250901.gif)

2 September Average and Extremes
Average temperature	64.8°F
Average humidity	73%
Average dewpoint	54.2°F
Average barometer	29.9 in.
Average windspeed	1.4 mph
Average gustspeed	2.6 mph
Average direction	146° (SE)
Rainfall for month	0.00 in.
Rainfall for year	13.75 in.
Maximum rain per minute	0.00 in. on 02 at 23:59
Maximum temperature	80.6°F on 02 at 13:09
Minimum temperature	50.9°F on 02 at 04:41
Maximum humidity	99% on 02 at 07:33
Minimum humidity	38% on 02 at 15:24
Maximum pressure	30.017 in. on 02 at 00:01
Minimum pressure	29.823 in. on 02 at 23:20
Maximum windspeed	6.9 mph on 02 at 17:13
Maximum gust speed	11.5 mph from 140 °(SE) on 02 at 17:13
Maximum heat index	80.4°F on 02 at 13:08

24 Hour Graph of this day is not available (20250902.gif)

3 September Average and Extremes
Average temperature	66.2°F
Average humidity	71%
Average dewpoint	54.6°F
Average barometer	29.7 in.
Average windspeed	1.2 mph
Average gustspeed	2.3 mph
Average direction	140° (SE)
Rainfall for month	0.00 in.
Rainfall for year	13.75 in.
Maximum rain per minute	0.00 in. on 03 at 23:59
Maximum temperature	82.2°F on 03 at 13:43
Minimum temperature	51.6°F on 03 at 06:18
Maximum humidity	99% on 03 at 07:32
Minimum humidity	39% on 03 at 14:51
Maximum pressure	29.834 in. on 03 at 00:25
Minimum pressure	29.644 in. on 03 at 18:56
Maximum windspeed	8.1 mph on 03 at 12:36
Maximum gust speed	11.5 mph from 121 °(ESE) on 03 at 16:47
Maximum heat index	81.7°F on 03 at 13:31

24 Hour Graph of this day is not available (20250903.gif)

4 September Average and Extremes
Average temperature	66.4°F
Average humidity	74%
Average dewpoint	56.8°F
Average barometer	29.7 in.
Average windspeed	2.0 mph
Average gustspeed	3.8 mph
Average direction	125° (SE)
Rainfall for month	0.00 in.
Rainfall for year	13.75 in.
Maximum rain per minute	0.00 in. on 04 at 23:59
Maximum temperature	81.3°F on 04 at 13:21
Minimum temperature	50.9°F on 04 at 06:37
Maximum humidity	99% on 04 at 07:24
Minimum humidity	45% on 04 at 14:22
Maximum pressure	29.710 in. on 04 at 09:08
Minimum pressure	29.608 in. on 04 at 16:46
Maximum windspeed	10.4 mph on 04 at 16:50
Maximum gust speed	16.1 mph from 106 °(ESE) on 04 at 16:17
Maximum heat index	81.6°F on 04 at 13:21

24 Hour Graph of this day is not available (20250904.gif)

5 September Average and Extremes
Average temperature	71.4°F
Average humidity	80%
Average dewpoint	64.4°F
Average barometer	29.7 in.
Average windspeed	1.9 mph
Average gustspeed	3.8 mph
Average direction	115° (ESE)
Rainfall for month	0.16 in.
Rainfall for year	13.91 in.
Maximum rain per minute	0.16 in. on 05 at 18:03
Maximum temperature	84.0°F on 05 at 14:17
Minimum temperature	62.4°F on 05 at 06:54
Maximum humidity	98% on 05 at 08:02
Minimum humidity	55% on 05 at 16:35
Maximum pressure	29.740 in. on 05 at 22:14
Minimum pressure	29.637 in. on 05 at 16:30
Maximum windspeed	8.1 mph on 05 at 18:14
Maximum gust speed	15.0 mph from 107 °(ESE) on 05 at 17:22
Maximum heat index	86.8°F on 05 at 14:15

24 Hour Graph of this day is not available (20250905.gif)

6 September Average and Extremes
Average temperature	71.2°F
Average humidity	88%
Average dewpoint	67.1°F
Average barometer	29.7 in.
Average windspeed	2.0 mph
Average gustspeed	4.0 mph
Average direction	120° (ESE)
Rainfall for month	0.16 in.
Rainfall for year	13.91 in.
Maximum rain per minute	0.00 in. on 06 at 23:59
Maximum temperature	85.1°F on 06 at 13:37
Minimum temperature	62.8°F on 06 at 23:59
Maximum humidity	99% on 06 at 06:18
Minimum humidity	63% on 06 at 13:42
Maximum pressure	29.788 in. on 06 at 22:50
Minimum pressure	29.564 in. on 06 at 16:31
Maximum windspeed	10.4 mph on 06 at 15:02
Maximum gust speed	21.9 mph from 106 °(ESE) on 06 at 16:37
Maximum heat index	91.1°F on 06 at 13:37

24 Hour Graph of this day is not available (20250906.gif)

7 September Average and Extremes
Average temperature	60.6°F
Average humidity	97%
Average dewpoint	59.7°F
Average barometer	29.8 in.
Average windspeed	0.5 mph
Average gustspeed	1.3 mph
Average direction	166° (SSE)
Rainfall for month	0.16 in.
Rainfall for year	13.91 in.
Maximum rain per minute	0.00 in. on 07 at 23:59
Maximum temperature	63.5°F on 07 at 17:37
Minimum temperature	55.8°F on 07 at 23:56
Maximum humidity	99% on 07 at 23:59
Minimum humidity	87% on 07 at 16:42
Maximum pressure	29.898 in. on 07 at 23:59
Minimum pressure	29.743 in. on 07 at 03:36
Maximum windspeed	2.3 mph on 07 at 17:12
Maximum gust speed	4.6 mph from 141 °(SE) on 07 at 13:35
Maximum heat index	63.5°F on 07 at 17:37

24 Hour Graph of this day is not available (20250907.gif)

8 September Average and Extremes
Average temperature	58.5°F
Average humidity	79%
Average dewpoint	50.7°F
Average barometer	30.0 in.
Average windspeed	0.7 mph
Average gustspeed	1.7 mph
Average direction	192° (SSW)
Rainfall for month	0.16 in.
Rainfall for year	13.91 in.
Maximum rain per minute	0.00 in. on 08 at 23:59
Maximum temperature	73.2°F on 08 at 14:34
Minimum temperature	45.9°F on 08 at 06:51
Maximum humidity	99% on 08 at 08:35
Minimum humidity	39% on 08 at 14:45
Maximum pressure	30.098 in. on 08 at 23:34
Minimum pressure	29.898 in. on 08 at 00:03
Maximum windspeed	5.8 mph on 08 at 17:33
Maximum gust speed	10.4 mph from 127 °(SE) on 08 at 16:33
Maximum heat index	77.2°F on 08 at 12:42

24 Hour Graph of this day is not available (20250908.gif)

9 September Average and Extremes
Average temperature	57.4°F
Average humidity	77%
Average dewpoint	48.8°F
Average barometer	30.1 in.
Average windspeed	1.7 mph
Average gustspeed	3.3 mph
Average direction	147° (SSE)
Rainfall for month	0.16 in.
Rainfall for year	13.91 in.
Maximum rain per minute	0.00 in. on 09 at 23:59
Maximum temperature	72.3°F on 09 at 13:37
Minimum temperature	44.1°F on 09 at 06:39
Maximum humidity	99% on 09 at 08:10
Minimum humidity	42% on 09 at 16:45
Maximum pressure	30.172 in. on 09 at 08:45
Minimum pressure	30.091 in. on 09 at 00:04
Maximum windspeed	10.4 mph on 09 at 15:55
Maximum gust speed	16.1 mph from 135 °(SE) on 09 at 15:58
Maximum heat index	77.5°F on 09 at 17:11

24 Hour Graph of this day is not available (20250909.gif)

14 September Average and Extremes
Average temperature	68.8°F
Average humidity	74%
Average dewpoint	59.2°F
Average barometer	29.8 in.
Average windspeed	0.5 mph
Average gustspeed	1.3 mph
Average direction	196° (SSW)
Rainfall for month	0.16 in.
Rainfall for year	13.91 in.
Maximum rain per minute	0.00 in. on 14 at 23:59
Maximum temperature	78.8°F on 14 at 14:33
Minimum temperature	47.9°F on 14 at 14:01
Maximum humidity	98% on 14 at 14:01
Minimum humidity	50% on 14 at 17:23
Maximum pressure	30.112 in. on 14 at 14:01
Minimum pressure	29.789 in. on 14 at 15:11
Maximum windspeed	5.8 mph on 14 at 14:40
Maximum gust speed	9.2 mph from 139 °(SE) on 14 at 14:33
Maximum heat index	80.0°F on 14 at 14:33

24 Hour Graph of this day is not available (20250914.gif)

15 September Average and Extremes
Average temperature	62.9°F
Average humidity	83%
Average dewpoint	57.0°F
Average barometer	30.0 in.
Average windspeed	1.1 mph
Average gustspeed	2.3 mph
Average direction	165° (SSE)
Rainfall for month	0.16 in.
Rainfall for year	13.91 in.
Maximum rain per minute	0.00 in. on 15 at 23:59
Maximum temperature	77.5°F on 15 at 14:42
Minimum temperature	51.6°F on 15 at 06:55
Maximum humidity	99% on 15 at 08:12
Minimum humidity	57% on 15 at 15:47
Maximum pressure	30.079 in. on 15 at 23:32
Minimum pressure	29.912 in. on 15 at 00:02
Maximum windspeed	6.9 mph on 15 at 18:10
Maximum gust speed	11.5 mph from 131 °(SE) on 15 at 15:06
Maximum heat index	79.2°F on 15 at 14:42

24 Hour Graph of this day is not available (20250915.gif)

Average and Extremes for Month of September 2025 up to day 15
Average temperature	64.4°F
Average humidity	80%
Average dewpoint	57.0°F
Average barometer	29.874 in.
Average windspeed	1.3 mph
Average gustspeed	2.7 mph
Average direction	141° (SE)
Rainfall for month	0.16 in.
Rainfall for year	13.99 in.
Maximum rain per minute	0.16 in on 05 at 18:03
Maximum temperature	85.1°F on 06 at 13:37
Minimum temperature	44.1°F on 09 at 06:39
Maximum humidity	99% on 15 at 08:12
Minimum humidity	38% on 02 at 15:24
Maximum pressure	30.17 in. on 09 at 08:45
Minimum pressure	29.56 in. on 06 at 16:31
Maximum windspeed	10.4 mph from 135°(SE) on 09 at 15:55
Maximum gust speed	21.9 mph from 090°(E) on 06 at 16:37
Maximum heat index	91.1°F on 06 at 13:37
Avg daily max temp	77.8°F
Avg daily min temp	52.0°F
Growing degrees days	202.6 GDD

Day, Sunshine Hours, ET, Max Solar, UV
01 00:30hrs	ET :0.08 in.	685.5 W/m²	8.0 uv
02 05:48hrs	ET :0.13 in.	773.2 W/m²	10.0 uv
03 05:12hrs	ET :0.13 in.	829.7 W/m²	10.0 uv
04 04:48hrs	ET :0.13 in.	861.1 W/m²	12.0 uv
05 02:24hrs	ET :0.11 in.	953.3 W/m²	12.0 uv
06 02:00hrs	ET :0.10 in.	635.9 W/m²	7.0 uv
07 00:00hrs	ET :0.02 in.	225.0 W/m²	2.0 uv
08 01:18hrs	ET :0.09 in.	764.2 W/m²	10.0 uv
09 05:00hrs	ET :0.11 in.	777.8 W/m²	10.0 uv
10 00:12hrs	ET :0.04 in.	0.0 W/m²	0.0 uv
11 04:36hrs	ET :0.10 in.	0.0 W/m²	0.0 uv
12 00:00hrs	ET :0.00 in.	0.0 W/m²	0.0 uv
13 00:00hrs	ET :0.00 in.	0.0 W/m²	0.0 uv
14 00:00hrs	ET :0.00 in.	656.4 W/m²	8.0 uv
15 00:00hrs	ET :0.00 in.	760.3 W/m²	10.0 uv

Daily Rain Totals

00.16 in. on 5