Rockbottom Observatory

Daily / Monthly Weather History From This Station

Select a report and click submit:

December 2025 November 2025 October 2025 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 December 2025

1 December Average and Extremes
Average temperature	34.5°F
Average humidity	67%
Average dewpoint	23.7°F
Average barometer	30.0 in.
Average windspeed	3.3 mph
Average gustspeed	5.2 mph
Average direction	251° (WSW)
Rainfall for month	0.00 in.
Rainfall for year	16.43 in.
Maximum rain per minute	0.00 in. on 01 at 00:00
Maximum temperature	41.9°F on 01 at 12:34
Minimum temperature	20.1°F on 01 at 23:35
Maximum humidity	93% on 01 at 00:00
Minimum humidity	39% on 01 at 14:24
Maximum pressure	30.102 in. on 01 at 19:25
Minimum pressure	29.743 in. on 01 at 00:20
Maximum windspeed	11.5 mph on 01 at 10:30
Maximum gust speed	18.4 mph from 260 °(W) on 01 at 12:49
Maximum heat index	41.9°F on 01 at 12:34

24 Hour Graph of this day is not available (20251201.gif)

2 December Average and Extremes
Average temperature	28.1°F
Average humidity	91%
Average dewpoint	25.8°F
Average barometer	29.7 in.
Average windspeed	2.0 mph
Average gustspeed	3.8 mph
Average direction	285° (WNW)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.06 in. on 02 at 23:34
Maximum temperature	33.1°F on 02 at 20:07
Minimum temperature	19.9°F on 02 at 01:26
Maximum humidity	97% on 02 at 19:36
Minimum humidity	70% on 02 at 06:19
Maximum pressure	30.070 in. on 02 at 01:09
Minimum pressure	29.375 in. on 02 at 22:31
Maximum windspeed	10.4 mph on 02 at 23:59
Maximum gust speed	16.1 mph from 319 °(NW) on 02 at 23:59
Maximum heat index	33.1°F on 02 at 20:07

24 Hour Graph of this day is not available (20251202.gif)

3 December Average and Extremes
Average temperature	31.4°F
Average humidity	88%
Average dewpoint	28.1°F
Average barometer	29.7 in.
Average windspeed	2.1 mph
Average gustspeed	3.3 mph
Average direction	242° (WSW)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 03 at 23:59
Maximum temperature	36.9°F on 03 at 13:03
Minimum temperature	26.4°F on 03 at 21:58
Maximum humidity	97% on 03 at 21:59
Minimum humidity	68% on 03 at 13:54
Maximum pressure	29.812 in. on 03 at 19:49
Minimum pressure	29.400 in. on 03 at 00:08
Maximum windspeed	6.9 mph on 02 at 00:12
Maximum gust speed	16.1 mph from 304 °(NW) on 03 at 00:12
Maximum heat index	36.9°F on 03 at 13:03

24 Hour Graph of this day is not available (20251203.gif)

4 December Average and Extremes
Average temperature	28.9°F
Average humidity	71%
Average dewpoint	20.0°F
Average barometer	29.7 in.
Average windspeed	4.3 mph
Average gustspeed	6.8 mph
Average direction	243° (WSW)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 04 at 23:59
Maximum temperature	38.3°F on 04 at 13:03
Minimum temperature	15.8°F on 04 at 23:59
Maximum humidity	96% on 04 at 05:49
Minimum humidity	38% on 04 at 19:54
Maximum pressure	30.045 in. on 04 at 23:54
Minimum pressure	29.593 in. on 04 at 13:54
Maximum windspeed	18.4 mph on 04 at 19:04
Maximum gust speed	28.8 mph from 243 °(WSW) on 04 at 19:04
Maximum heat index	38.3°F on 04 at 13:03

24 Hour Graph of this day is not available (20251204.gif)

5 December Average and Extremes
Average temperature	18.7°F
Average humidity	48%
Average dewpoint	1.8°F
Average barometer	30.0 in.
Average windspeed	1.9 mph
Average gustspeed	3.2 mph
Average direction	190° (S)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 05 at 23:59
Maximum temperature	25.5°F on 05 at 14:11
Minimum temperature	7.3°F on 05 at 07:26
Maximum humidity	67% on 05 at 23:59
Minimum humidity	31% on 05 at 10:43
Maximum pressure	30.112 in. on 05 at 08:05
Minimum pressure	29.783 in. on 05 at 23:55
Maximum windspeed	10.4 mph on 04 at 00:02
Maximum gust speed	15.0 mph from 251 °(WSW) on 05 at 00:14
Maximum heat index	25.5°F on 05 at 14:11

24 Hour Graph of this day is not available (20251205.gif)

6 December Average and Extremes
Average temperature	28.1°F
Average humidity	83%
Average dewpoint	23.6°F
Average barometer	29.7 in.
Average windspeed	0.6 mph
Average gustspeed	1.4 mph
Average direction	120° (ESE)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 06 at 23:59
Maximum temperature	38.8°F on 06 at 14:06
Minimum temperature	22.1°F on 06 at 23:59
Maximum humidity	97% on 06 at 23:54
Minimum humidity	65% on 06 at 02:04
Maximum pressure	29.788 in. on 06 at 00:03
Minimum pressure	29.568 in. on 06 at 15:24
Maximum windspeed	6.9 mph on 06 at 13:49
Maximum gust speed	9.2 mph from 100 °(E) on 06 at 13:49
Maximum heat index	38.8°F on 06 at 14:06

24 Hour Graph of this day is not available (20251206.gif)

7 December Average and Extremes
Average temperature	31.3°F
Average humidity	80%
Average dewpoint	25.4°F
Average barometer	29.8 in.
Average windspeed	1.0 mph
Average gustspeed	1.9 mph
Average direction	196° (SSW)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 07 at 23:59
Maximum temperature	38.7°F on 07 at 13:03
Minimum temperature	22.1°F on 07 at 00:02
Maximum humidity	97% on 07 at 06:31
Minimum humidity	56% on 07 at 13:04
Maximum pressure	29.859 in. on 07 at 10:07
Minimum pressure	29.685 in. on 07 at 23:46
Maximum windspeed	4.6 mph on 07 at 14:25
Maximum gust speed	6.9 mph from 103 °(ESE) on 07 at 14:12
Maximum heat index	38.7°F on 07 at 13:03

24 Hour Graph of this day is not available (20251207.gif)

8 December Average and Extremes
Average temperature	22.3°F
Average humidity	49%
Average dewpoint	4.9°F
Average barometer	29.9 in.
Average windspeed	4.2 mph
Average gustspeed	6.7 mph
Average direction	261° (W)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 08 at 23:59
Maximum temperature	33.4°F on 08 at 01:59
Minimum temperature	9.0°F on 08 at 23:59
Maximum humidity	83% on 08 at 23:59
Minimum humidity	26% on 08 at 12:51
Maximum pressure	30.060 in. on 08 at 20:04
Minimum pressure	29.687 in. on 08 at 00:13
Maximum windspeed	13.8 mph on 08 at 13:44
Maximum gust speed	21.9 mph from 322 °(NW) on 08 at 04:45
Maximum heat index	33.4°F on 08 at 01:59

24 Hour Graph of this day is not available (20251208.gif)

9 December Average and Extremes
Average temperature	18.4°F
Average humidity	59%
Average dewpoint	4.4°F
Average barometer	29.9 in.
Average windspeed	1.4 mph
Average gustspeed	2.6 mph
Average direction	136° (SE)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 09 at 23:59
Maximum temperature	27.5°F on 09 at 11:56
Minimum temperature	4.6°F on 09 at 07:10
Maximum humidity	93% on 09 at 03:50
Minimum humidity	29% on 09 at 15:54
Maximum pressure	30.026 in. on 09 at 00:20
Minimum pressure	29.651 in. on 09 at 23:59
Maximum windspeed	6.9 mph on 09 at 20:40
Maximum gust speed	11.5 mph from 096 °(E) on 09 at 15:45
Maximum heat index	27.5°F on 09 at 11:56

24 Hour Graph of this day is not available (20251209.gif)

13 December Average and Extremes
Average temperature	32.8°F
Average humidity	66%
Average dewpoint	22.7°F
Average barometer	29.8 in.
Average windspeed	1.2 mph
Average gustspeed	2.4 mph
Average direction	171° (S)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 13 at 23:59
Maximum temperature	34.9°F on 13 at 14:03
Minimum temperature	27.1°F on 13 at 12:01
Maximum humidity	77% on 13 at 22:09
Minimum humidity	52% on 13 at 12:04
Maximum pressure	29.793 in. on 13 at 12:07
Minimum pressure	29.630 in. on 13 at 12:00
Maximum windspeed	5.8 mph on 13 at 14:17
Maximum gust speed	10.4 mph from 060 °(ENE) on 13 at 13:40
Maximum heat index	34.9°F on 13 at 14:03

24 Hour Graph of this day is not available (20251213.gif)

14 December Average and Extremes
Average temperature	27.9°F
Average humidity	78%
Average dewpoint	21.6°F
Average barometer	29.7 in.
Average windspeed	2.7 mph
Average gustspeed	4.8 mph
Average direction	274° (W)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 14 at 23:59
Maximum temperature	32.0°F on 14 at 00:52
Minimum temperature	16.7°F on 14 at 23:59
Maximum humidity	95% on 14 at 09:13
Minimum humidity	51% on 14 at 21:55
Maximum pressure	29.751 in. on 14 at 01:15
Minimum pressure	29.598 in. on 14 at 13:47
Maximum windspeed	12.7 mph on 14 at 19:57
Maximum gust speed	24.2 mph from 313 °(NW) on 14 at 19:58
Maximum heat index	32.0°F on 14 at 00:52

24 Hour Graph of this day is not available (20251214.gif)

15 December Average and Extremes
Average temperature	17.1°F
Average humidity	60%
Average dewpoint	5.5°F
Average barometer	29.8 in.
Average windspeed	4.8 mph
Average gustspeed	7.4 mph
Average direction	248° (WSW)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 15 at 23:59
Maximum temperature	22.8°F on 15 at 14:52
Minimum temperature	11.3°F on 15 at 06:59
Maximum humidity	88% on 15 at 23:59
Minimum humidity	46% on 15 at 15:06
Maximum pressure	29.904 in. on 15 at 10:18
Minimum pressure	29.734 in. on 15 at 00:27
Maximum windspeed	13.8 mph on 15 at 13:03
Maximum gust speed	23.0 mph from 246 °(WSW) on 15 at 13:04
Maximum heat index	22.8°F on 15 at 14:52

24 Hour Graph of this day is not available (20251215.gif)

16 December Average and Extremes
Average temperature	26.5°F
Average humidity	64%
Average dewpoint	15.4°F
Average barometer	29.9 in.
Average windspeed	1.2 mph
Average gustspeed	2.3 mph
Average direction	169° (S)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 16 at 23:59
Maximum temperature	36.5°F on 16 at 12:45
Minimum temperature	14.2°F on 16 at 00:03
Maximum humidity	88% on 16 at 00:22
Minimum humidity	44% on 16 at 13:11
Maximum pressure	29.966 in. on 16 at 08:19
Minimum pressure	29.802 in. on 16 at 23:52
Maximum windspeed	8.1 mph on 16 at 13:59
Maximum gust speed	12.7 mph from 107 °(ESE) on 16 at 14:00
Maximum heat index	36.5°F on 16 at 12:45

24 Hour Graph of this day is not available (20251216.gif)

17 December Average and Extremes
Average temperature	36.7°F
Average humidity	57%
Average dewpoint	22.9°F
Average barometer	29.7 in.
Average windspeed	3.0 mph
Average gustspeed	5.1 mph
Average direction	205° (SSW)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 17 at 23:59
Maximum temperature	46.6°F on 17 at 15:38
Minimum temperature	25.9°F on 17 at 03:44
Maximum humidity	67% on 17 at 18:07
Minimum humidity	46% on 17 at 10:39
Maximum pressure	29.881 in. on 17 at 23:47
Minimum pressure	29.504 in. on 17 at 14:29
Maximum windspeed	11.5 mph on 17 at 21:13
Maximum gust speed	20.7 mph from 237 °(WSW) on 17 at 20:36
Maximum heat index	46.6°F on 17 at 15:38

24 Hour Graph of this day is not available (20251217.gif)

18 December Average and Extremes
Average temperature	36.5°F
Average humidity	75%
Average dewpoint	28.7°F
Average barometer	30.0 in.
Average windspeed	1.9 mph
Average gustspeed	3.4 mph
Average direction	123° (ESE)
Rainfall for month	0.06 in.
Rainfall for year	16.48 in.
Maximum rain per minute	0.00 in. on 18 at 23:59
Maximum temperature	48.0°F on 18 at 12:43
Minimum temperature	22.1°F on 18 at 07:34
Maximum humidity	96% on 18 at 08:01
Minimum humidity	46% on 18 at 12:57
Maximum pressure	30.121 in. on 18 at 09:59
Minimum pressure	29.805 in. on 18 at 23:59
Maximum windspeed	10.4 mph on 18 at 14:19
Maximum gust speed	15.0 mph from 112 °(ESE) on 18 at 14:19
Maximum heat index	48.0°F on 18 at 12:43

24 Hour Graph of this day is not available (20251218.gif)

Average and Extremes for Month of December 2025 up to day 18
Average temperature	27.8°F
Average humidity	69%
Average dewpoint	18.1°F
Average barometer	29.820 in.
Average windspeed	2.4 mph
Average gustspeed	4.1 mph
Average direction	238° (WSW)
Rainfall for month	0.06 in.
Rainfall for year	16.58 in.
Maximum rain per minute	0.06 in on 02 at 23:34
Maximum temperature	48.0°F on 18 at 12:43
Minimum temperature	4.6°F on 09 at 07:10
Maximum humidity	97% on 07 at 06:31
Minimum humidity	26% on 08 at 12:51
Maximum pressure	30.12 in. on 18 at 09:59
Minimum pressure	29.38 in. on 02 at 22:31
Maximum windspeed	18.4 mph from 243°(WSW) on 04 at 19:04
Maximum gust speed	28.8 mph from 248°(WSW) on 04 at 19:04
Maximum heat index	48.0°F on 18 at 12:43
Avg daily max temp	35.7°F
Avg daily min temp	17.6°F
Growing degrees days	0.0 GDD

Day, Sunshine Hours, ET, Max Solar, UV
01 00:18hrs	ET :0.02 in.	187.8 W/m²	0.0 uv
02 00:00hrs	ET :0.00 in.	16.7 W/m²	0.0 uv
03 03:00hrs	ET :0.01 in.	273.7 W/m²	2.0 uv
04 00:06hrs	ET :0.02 in.	198.8 W/m²	0.0 uv
05 00:12hrs	ET :0.02 in.	139.1 W/m²	0.0 uv
06 00:00hrs	ET :0.01 in.	159.6 W/m²	0.0 uv
07 00:00hrs	ET :0.01 in.	163.8 W/m²	0.0 uv
08 00:12hrs	ET :0.03 in.	141.5 W/m²	0.0 uv
09 00:18hrs	ET :0.01 in.	153.0 W/m²	0.0 uv
10 00:00hrs	ET :0.01 in.	0.0 W/m²	0.0 uv
11 00:00hrs	ET :0.01 in.	0.0 W/m²	0.0 uv
12 00:00hrs	ET :0.02 in.	0.0 W/m²	0.0 uv
13 00:06hrs	ET :0.01 in.	119.4 W/m²	0.0 uv
14 01:00hrs	ET :0.04 in.	23.5 W/m²	0.0 uv
15 01:00hrs	ET :0.02 in.	132.9 W/m²	0.0 uv
16 00:00hrs	ET :0.00 in.	121.5 W/m²	0.0 uv
17 00:00hrs	ET :0.00 in.	273.9 W/m²	2.0 uv
18 00:00hrs	ET :0.00 in.	114.8 W/m²	0.0 uv

Daily Rain Totals

00.06 in. on 2