September 2025 OBS-Discussion centered NYC subforum

[LibertyBell]

4 minutes ago, Stormlover74 said:

I can't really think of many storms in the final week of March while early April has produced a few. Very small sample size though. 1982 and 2003 probably skewing the results

some are small those are the big ones

also don't forget April 2018 !!

The best of that entire string for me

and April 1996 !!

 

[LibertyBell]

1 hour ago, bluewave said:

First time since 1982 that New Brunswick had a colder monthly minimum temperature in August than September.

Monthly Lowest Min Temperature for New Brunswick Area, NJ (ThreadEx)
Click column heading to sort ascending, click again to sort descending.

2025	48	49	48
2024	51	45	45
2023	55	49	49
2022	55	41	41
2021	55	50	50
2020	56	38	38
2019	55	42	42
2018	55	50	50
2017	53	46	46
2016	52	43	43
2015	53	47	47
2014	50	42	42
2013	51	40	40
2012	54	42	42
2011	52	42	42
2010	52	44	44
2009	56	43	43
2008	53	46	46
2007	55	43	43
2006	51	40	40
2005	55	40	40
2004	52	44	44
2003	53	45	45
2002	55	47	47
2001	54	43	43
2000	49	36	36
1999	54	44	44
1998	50	39	39
1997	53	36	36
1996	55	43	43
1995	52	45	45
1994	50	44	44
1993	56	36	36
1992	50	38	38
1991	53	37	37
1990	56	40	40
1989	51	35	35
1988	51	45	45
1987	45	39	39
1986	42	39	39
1985	53	42	42
1984	50	38	38
1983	51	37	37
1982	40	44	40

the 80s were extremely cold, note how we did not have an August-September low couplet of 45 or colder after the 1980s. in your list it's only 1982, 1986, 1987 with that combo.

Since then the next lowest couplet of August-September is 49 degrees (this year actually.) Besides this year and 2000 every year since 1987 has this couplet combo low of at least 50 or higher.

 

 

[LibertyBell]

1 hour ago, steve392 said:

52 degree's in Mahwah this morning. Crystal clear skies

windy too but gorgeous but brrrrrrrrrrr lol

[anthonymm]

17 minutes ago, Stormlover74 said:

I can't really think of many storms in the final week of March while early April has produced a few. Very small sample size though. 1982 and 2003 probably skewing the results

What do you think climatologically the snowiest week is? Second week of Feb would be my gut feeling.

[Stormlover74]

6 minutes ago, anthonymm said:

What do you think climatologically the snowiest week is? Second week of Feb would be my gut feeling.

That or 3rd week of Jan

[donsutherland1]

50 minutes ago, anthonymm said:

What do you think climatologically the snowiest week is? Second week of Feb would be my gut feeling.

 

44 minutes ago, Stormlover74 said:

That or 3rd week of Jan

It depends on the timeframe one is using and how one defines snowiest week.

Select data for Central Park:

Snowiest Week (Based on Mean Daily Snowfall):
1869-2024: February 7-13: 0.4" per day
1991-2020: January 21-27: 0.6" per day

Snowiest Week (Based on the Percentage of Days with Measurable Snowfall):
1869-2024: January 27-February 2: 16.1%
1991-2020: January 25-31: 15.7%

Snowiest Week (Based on the Percentage of Days with 1" or More Snowfall):
1869-2024: February 1-7: 9.0%
1991-2020: January 21-27: 10.5%

[LibertyBell]

23 minutes ago, donsutherland1 said:

 

It depends on the timeframe one is using and how one defines snowiest week.

Select data for Central Park:

Snowiest Week (Based on Mean Daily Snowfall):
1869-2024: February 7-13: 0.4" per day
1991-2020: January 21-27: 0.6" per day

Snowiest Week (Based on the Percentage of Days with Measurable Snowfall):
1869-2024: January 27-February 2: 16.1%
1991-2020: January 25-31: 15.7%

Snowiest Week (Based on the Percentage of Days with 1" or More Snowfall):
1869-2024: February 1-7: 9.0%
1991-2020: January 21-27: 10.5%

what about for HECS Don (this I would define as a day with 10" or more of snowfall.)

[donsutherland1]

41 minutes ago, LibertyBell said:

what about for HECS Don (this I would define as a day with 10" or more of snowfall.)

Highest Percentage of Days with 10" or More Snowfall):
1869-2024: February 4-10: 0.8% of days
1991-2020: January 20-26: 1.4% of days

[LibertyBell]

3 hours ago, donsutherland1 said:

Highest Percentage of Days with 10" or More Snowfall):
1869-2024: February 4-10: 0.8% of days
1991-2020: January 20-26: 1.4% of days

Interesting, everything is shifting to January as February has been getting warmer at a more rapid rate.

[Roger Smith]

LB, I think that TS4 was about a 60 mph storm when it made landfall. The rainfall you asked about (8.28") is the daily record for September (second place being 7.13" Sep 1, 2021)  and is also the all-time daily record for any month, but the all-time monthly record at Central Park (despite what it said in the source) is August 2011 with 18.95" -- Oct 2005 had 16.73" April 1983 14.01" and Oct 1903 had 13.31" ... these are the largest daily totals ...

1. Sep 23, 1882 ____ 8.28"   

2. Apr 15, 2007 ____ 7.57"

3. Nov 8, 1977 _____ 7.40"

4, Oct 9, 1903 _____ 7.33" 

5. Sep 1, 2021 _____ 7.13

6. Aug 14, 2011 ___ 5.81"

7. Nov 8, 1972 _____ 5.60"

8. Sep 21, 1966 ___ 5.54"

9. Sep 29, 2023 __ 5.48"

10. Sep 16, 1999 __ 5.02"

10. Oct 1, 1913 ____ 4.98"

11. Apr 30, 2014 ___4.97"

12. Sep 8, 1934 ___ 4.86"

13t Aug 20, 1873 __ 4.80"

13t Aug 16, 1909 ___4.80"

15. Aug 10, 1990 ___4.64"

16. Aug 21, 2021 ___4.45"  

17. Oct 19, 1996 ____4.35"

18. Apr 10, 1983 ___ 4.31"

19t Sep 19, 1894 ___ 4.30"

19t Oct 8, 1903 ____ 4.30"

21. June 26, 1884 __4.29"

22t Oct 8, 2005 ____ 4.26"

22t Oct 12, 2005 ___ 4.26"

24. Mar 25, 1876 ___4.25"

25. Aug 21, 1888 ___4.19"

26t June 7, 2013 ___4.16"

26t Aug 27, 1971 ___ 4.16"

26t Sep 15, 1933 ___ 4.16"

29. Aug 9, 1942 ___ 4.10"

30. Oct 7, 1972 _____ 4.09"

31. Sep 21, 1938 ___ 4.05"

 

This includes all 4"daily amounts, May's record daily in 32nd place was 3.99" on 29th, 1968.

Sep 13-14 1944 (3.94 + 3.82) both came close to making the list also.