Atlantic Point Weather

41°F

Bellport, NY, USA

Updated: 03/15/2026 7:10 pm

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WxSim & NWS Forecast Comparison

National Weather Service (NW), Actual Observed (Act), WxSim Generated (WS)
Morning Forecasts

Updated: 03-15-26 at 5:00 am

Goal	Forecast Day						Day +1						Day +2						Day +3
± 2.0° F	High			Low			High			Low			High			Low			High			Low
Date	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
03-15-26	49		51	81		38	55		59	88		35	58		44	93		25	60		43	93		31
03-14-26	47	52.9	50	75	33.3	31	49		52	82		39	55		60	89		34	59		42	92		27
03-13-26	48	41.7	26	77	26.6	45	47	52.9	35	75	33.3	49	50		31	83		50	56		37	89		60
03-12-26	48	46.2	55	81	54.5	29	48	41.7	46	79	26.6	37	48	52.9	49	79	33.3	30	52		48	84		37
03-11-26	43	62.4	69	76	42.1	48	49	46.2	57	81	54.5	29	47	41.7	47	78	26.6	38	47	52.9	50	80	33.3	30
03-10-26	44	65.1	65	69	37.2	44	43	62.4	63	76	42.1	48	48	46.2	57	82	54.5	30	50	41.7	48	80	26.6	35
03-09-26	48	70.0	37	73	31.6	62	44	65.1	40	70	37.2	60	44	62.4	42	76	42.1	60	48	46.2	47	79	54.5	57
Results	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
# Succ	1		1	0		0	0		1	0		0	1		0	0		0	1		1	0		0
% Succ	16.7		16.7			0.0			20.0			0.0	25.0		0.0			0.0	33.3		33.3			0.0
Ave Error	12.8		11.2	37.6		14.9	11.1		11.7	37.5		16.1	7.6		10.1	39.6		14.3	5.3		3.3	41.5		4.7
Net Error	-10.1		-6.1	37.6		5.6	-7.5		-5.5	37.5		5.9	-4.1		-2.1	39.6		0.4	1.4		1.4	41.5		2.5
Std Dev	7.3		6.3	7.7		8.5	4.9		4.3	8.5		4.9	1.4		3.1	3.0		5.5	0.0		0.0	0.0		0.0

Start: Days: Cols: Goal: Ext Stats: Diff Cols: Hilite #s: Time: Show NWS

Mid-Day Forecasts

Updated: 03-15-26 at 11:00 am

Goal	Forecast Day						Day +1						Day +2						Day +3
± 2.0° F	High			Low			High			Low			High			Low			High			Low
Date	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
03-15-26	81		53	55		39	88		61	58		37	93		45	60		23	93		42	60		30
03-14-26	75	52.9	54	49	28.2	32	82		52	55		38	89		62	59		33	92		42	60		25
03-13-26	77	41.7	49	47	33.3	37	75	52.9	51	50	28.2	31	83		50	56		38	89		61	59		35
03-12-26	81	54.5	53	48	26.6	30	78	41.7	47	48	33.3	37	77	52.9	48	50	28.2	30	84		49	55		38
03-11-26	76	62.4	73	49	46.2	51	81	54.5	59	47	26.6	30	78	41.7	47	47	33.3	37	80	52.9	49	51	28.2	30
03-10-26	69	65.1	64	43	42.1	43	76	62.4	64	48	46.2	47	82	54.5	58	50	26.6	29	80	41.7	47	49	33.3	35
03-09-26	74	70.0	70	44	37.2	39	70	65.1	64	44	42.1	44	76	62.4	64	48	46.2	47	80	54.5	56	49	26.6	27
Results	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
# Succ	0		4	1		2	0		3	2		2	0		1	1		2	0		1	0		3
% Succ			66.7	16.7		33.3			60.0	40.0		40.0			25.0	25.0		50.0			33.3			100.0
Ave Error	17.6		3.6	11.1		3.1	20.7		2.9	12.1		2.5	25.4		3.8	15.2		2.2	30.3		3.6	20.3		1.3
Net Error	17.6		2.7	11.1		3.1	20.7		1.7	12.1		2.5	25.4		1.4	15.2		2.2	30.3		1.0	20.3		1.3
Std Dev	10.1		3.6	8.0		1.2	7.5		1.4	5.8		0.7	0.6		0.5	3.3		0.2	0.0		0.0	0.0		0.0

Start: Days: Cols: Goal: Ext Stats: Diff Cols: Hilite #s: Time: Show NWS

Evening Forecasts

Updated: 03-15-26 at 5:00 pm

Goal	Forecast Day						Day +1						Day +2						Day +3
± 2.0° F	Low			High			Low			High			Low			High			Low			High
Date	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
03-15-26	81		38	55		62	87		38	58		45	93		23	61		43	95		30	61		47
03-14-26	75	28.2	32	49	52.9	52	82		38	55		61	89		33	59		42	92		25	60		42
03-13-26	76	33.3	35	47	41.7	49	75	28.2	31	50	52.9	52	82		38	56		60	90		36	59		42
03-12-26	81	26.6	29	48	54.5	47	77	33.3	36	47	41.7	49	76	28.2	30	51	52.9	48	84		38	56		61
03-11-26	76	46.2	51	48	62.4	58	81	26.6	30	48	54.5	46	79	33.3	37	48	41.7	50	79	28.2	32	52	52.9	47
03-10-26	69	42.1	43	45	65.1	66	75	46.2	49	48	62.4	57	83	26.6	31	49	54.5	48	79	33.3	37	48	41.7	48
03-09-26	74	37.2	42	44	70.0	64	69	42.1	44	44	65.1	61	76	46.2	47	50	62.4	57	83	26.6	29	52	54.5	48
Results	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
# Succ	0		2	0		2	0		1	0		1	0		2	1		0	0		0	1		0
% Succ			33.3			33.3			20.0			20.0			50.0	25.0		0.0			0.0	33.3		0.0
Ave Error	39.6		3.1	12.7		4.5	40.1		2.7	10.0		5.2	44.9		2.7	6.5		6.3	51.0		3.3	3.2		6.2
Net Error	39.6		3.1	-10.9		-1.8	40.1		2.7	-7.9		-2.3	44.9		2.7	-3.4		-2.1	51.0		3.3	1.0		-2.0
Std Dev	9.5		1.3	6.2		2.7	7.2		0.3	4.1		2.6	1.4		0.4	2.3		0.7	0.0		0.0	0.0		0.0

Start: Days: Cols: Goal: Ext Stats: Diff Cols: Hilite #s: Time: Show NWS

Nighttime Forecasts

Updated: 03-14-26 at 11:00 pm

Goal	Forecast Day						Day +1						Day +2						Day +3
± 2.0° F	Low			High			Low			High			Low			High			Low			High
Date	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
03-14-26	49		30	82		50	55		37	89		59	59		35	92		43	60		25	92		43
03-13-26	47	33.3	37	75	41.7	49	50		31	82		51	56		38	90		61	59		36	92		42
03-12-26	48	26.6	26	77	54.5	45	47	33.3	35	76	41.7	49	51		31	84		50	56		37	88		60
03-11-26	48	46.2	52	81	62.4	59	48	26.6	30	79	54.5	47	48	33.3	37	79	41.7	48	52		31	84		49
03-10-26	45	42.1	40	75	65.1	65	48	46.2	47	83	62.4	57	49	26.6	29	79	54.5	47	48	33.3	35	80	41.7	47
03-09-26	44	37.2	41	69	70.0	65	44	42.1	44	76	65.1	64	50	46.2	48	83	62.4	55	52	26.6	29	82	54.5	47
03-08-26	48	31.6	37	73	57.0	62	44	37.2	40	70	70.0	60	44	42.1	42	76	65.1	60	48	46.2	47	79	62.4	57
Results	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS	NW	Act	WS
# Succ	1		1	1		1	2		3	1		1	1		2	0		0	1		2	0		0
% Succ	16.7		16.7	16.7		16.7	40.0		60.0	20.0		20.0	25.0		50.0			0.0	33.3		66.7			0.0
Ave Error	10.5		3.6	16.9		5.1	9.1		2.1	18.1		6.3	10.7		2.0	23.3		6.6	14.0		1.6	27.5		6.1
Net Error	10.5		2.7	16.6		-0.9	9.1		2.1	18.1		-3.3	10.7		2.0	23.3		-3.4	14.0		1.6	27.5		-2.5
Std Dev	6.8		1.6	10.0		2.9	6.7		0.8	7.9		0.8	2.0		0.9	7.0		0.1	0.0		0.0	0.0		0.0

Start: Days: Cols: Goal: Ext Stats: Diff Cols: Hilite #s: Time: Show NWS