September 2025 OBS-Discussion centered NYC subforum

[SACRUS]

 

Highs
 

 

EWR: 83
PHL: 83
New Brnswck: 82
ISP: 82
TEB: 81
JFK: 81
TTN: 81
NYC: 81
LGA: 80
ACY: 79
BLM: 77

[Sundog]

The 18z GFS has tons of below normal temps for much of the run.  

I choose to believe it for no other reason than I simply like what it shows. 

[SACRUS]

 

 

Sep Dep's

ISP: +2.6
EWR: +2.4
TTN: +1.6
NYC: +1.3
JFK: +1.0
LGA: +0.6

[Sundog]

1 minute ago, SACRUS said:

 

 

Sep Dep's

EWR: +2.4
NYC: +1.3
JFK: +1.0
LGA: +0.6

The spread between LGA and Newark is pretty significant for a monthly anomaly no?

[psv88]

5 minutes ago, Sundog said:

The spread between LGA and Newark is pretty significant for a monthly anomaly no?

Lots of northeast winds this month. Makes sense 

[FPizz]

1 hour ago, Sundog said:

The spread between LGA and Newark is pretty significant for a monthly anomaly no?

Newarks temps are pristine and represent all of the tri-state.  All the others look too low and suspicious to me minus isp.  

[NorthShoreWx]

September 30 max here was 77° (76.6°).  Unusual spread with temps south of the LIE (must have been the wind off the sound).   ISP is less than 10 miles southeast of here.

The most recent temperatures in the 80s were on 9/26 and 9/28 (both 83°)

September rainfall here was 3.23"

Warmest for the month was 84° on the 9/6 and again on the 9/19.

September temperatures on the whole were similar to the last 2 weeks of August

Coolest was 49° on September 22.

[NorthShoreWx]

7 hours ago, Roger Smith said:

The 88 _ 90 _ 94 of Oct 4 to 6 1941 was the latest not quite a heatwave by official definitions, and mid-October 1954 had three in a row over 84 F. 

The wet September is a typo, it was actually 1882. And what caused it was mainly a slow-moving tropical storm (TS 4 of 1892) moving up the east coast 22nd to 24th. About three quarters of the month's massive total occurred in that time frame. The TS crossed Long Island with a landfall at Mastic Beach.  

2007 wasn't a heatwave, but it was a pretty warm run for early October.  Just missed 6 (arguably 7) consecutive 80° days.  Very warm nights too.  This is from Central Park:

Day	Max	Min	Rain
2007 10 01	69	59	0
2007 10 02	75	58	0
2007 10 03	78	65	0.03
2007 10 04	84	69	0
2007 10 05	83	67	0
2007 10 06	83	66	0
2007 10 07	82	67	0
2007 10 08	87	67	0
2007 10 09	79	60	0.52

[winterwarlock]

83

 

7th straight day of 80 and above