Atlantic Point Weather

63°F

Bellport, NY, USA

Updated: 08/16/2026 1:00 am

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WxSim & NWS Forecast Comparison

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

Updated: 08-15-26 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
08-15-26	55		85	79		65	54		86	83		67	55		88	81		68	54		87	83		68
08-14-26	55	86.4	88	77	63.7	63	54		85	78		65	54		86	81		65	54		84	78		66
08-13-26	56	86.9	89	74	68.7	66	56	86.4	88	75	63.7	63	54		85	78		68	54		82	79		68
08-12-26	57	86.9	90	80	69.1	65	57	86.9	90	73	68.7	66	56	86.4	88	74	63.7	63	55		82	77		66
08-11-26	57	88.9	90	86	68.5	67	57	86.9	86	81	69.1	69	57	86.9	85	74	68.7	68	55	86.4	87	76	63.7	61
08-10-26	60	87.8	90	90	64.2	72	58	88.9	90	87	68.5	65	58	86.9	89	81	69.1	70	56	86.9	88	77	68.7	67
08-09-26	61	92.3	92	96	72.5	70	60	87.8	92	90	64.2	72	59	88.9	89	88	68.5	69	58	86.9	85	84	69.1	66
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		3	0		2	0		3	0		2	0		3	0		4	0		3	0		1
% Succ			50.0			33.3			60.0			40.0			75.0			100.0			100.0			33.3
Ave Error	30.5		1.7	16.1		3.2	29.8		2.2	14.4		3.0	29.8		1.4	11.8		0.7	30.4		1.2	11.8		2.5
Net Error	-30.5		1.6	16.1		-0.6	-29.8		1.8	14.4		0.2	-29.8		0.5	11.8		0.0	-30.4		-0.1	11.8		-2.5
Std Dev	1.3		0.7	6.4		2.3	0.3		0.8	4.8		1.6	0.3		0.1	0.7		0.0	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: 08-15-26 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
08-15-26	79		87	54		66	84		85	55		65	82		86	55		66	83		88	56		66
08-14-26	77	86.4	90	54	63.3	65	78		85	54		66	81		85	54		66	78		78	54		66
08-13-26	74	86.9	91	56	63.7	68	75	86.4	87	54	63.3	63	78		84	54		68	79		82	54		68
08-12-26	80	86.9	89	56	68.7	64	73	86.9	89	56	63.7	66	75	86.4	88	54	63.3	62	77		83	54		65
08-11-26	86	88.9	90	57	69.1	63	81	86.9	88	57	68.7	68	74	86.9	88	55	63.7	68	76	86.4	88	55	63.3	61
08-10-26	90	87.8	93	58	68.5	71	87	88.9	89	58	69.1	68	81	86.9	88	56	68.7	71	77	86.9	84	56	63.7	67
08-09-26	96	92.3	95	60	64.2	71	90	87.8	91	59	68.5	73	88	88.9	89	58	69.1	69	84	86.9	86	57	68.7	71
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		1	0		1	1		3	0		3	1		4	0		2	0		2	0		0
% Succ			16.7			16.7	20.0		60.0			60.0	25.0		100.0			50.0			66.7			0.0
Ave Error	6.3		3.1	9.4		4.4	7.1		1.4	9.9		1.8	7.8		1.0	10.5		2.0	7.7		1.8	9.2		2.6
Net Error	-4.4		3.1	-9.4		0.8	-6.2		1.4	-9.9		0.9	-7.8		1.0	-10.5		1.3	-7.7		-0.7	-9.2		1.1
Std Dev	3.7		1.3	1.9		1.5	3.7		0.5	1.3		0.9	1.8		0.3	0.6		0.4	0.0		0.0	0.0		0.0

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

Evening Forecasts

Updated: 08-15-26 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
08-15-26	79		67	54		86	84		64	55		86	82		67	55		86	83		68	56		87
08-14-26	77	63.3	65	55	86.4	84	79		67	54		85	82		66	54		82	79		65	54		85
08-13-26	74	63.7	68	55	86.9	89	75	63.3	64	54	86.4	85	78		68	53		81	79		66	54		88
08-12-26	80	68.7	64	56	86.9	87	73	63.7	66	56	86.9	87	75	63.3	62	54	86.4	82	78		67	54		83
08-11-26	86	69.1	68	57	88.9	88	79	68.7	71	56	86.9	88	72	63.7	70	55	86.9	85	75	63.3	63	54	86.4	85
08-10-26	90	68.5	67	57	87.8	89	86	69.1	66	57	88.9	87	80	68.7	69	56	86.9	84	75	63.7	67	56	86.9	86
08-09-26	96	64.2	70	60	92.3	91	89	68.5	70	58	87.8	90	86	69.1	70	57	88.9	85	83	68.7	67	56	86.9	89
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		3	0		4	0		2	0		4	0		3	0		1	0		2	0		2
% Succ			50.0			66.7			40.0			80.0			75.0			25.0			66.7			66.7
Ave Error	17.6		3.2	31.5		1.3	13.7		2.0	31.2		1.3	12.1		2.2	31.8		3.3	12.4		1.8	31.4		1.5
Net Error	17.6		0.8	-31.5		-0.2	13.7		0.7	-31.2		0.0	12.1		1.6	-31.8		-3.3	12.4		0.4	-31.4		-0.1
Std Dev	4.5		1.5	0.5		0.8	2.7		0.6	0.6		0.6	0.2		0.5	0.3		0.6	0.0		0.0	0.0		0.0

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

Nighttime Forecasts

Updated: 08-15-26 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
08-15-26	54		61	84		85	55		64	82		87	55		66	83		86	56		68	85		88
08-14-26	55	63.3	64	79	86.4	85	54		66	82		85	54		66	79		89	54		66	81		84
08-13-26	55	63.7	65	75	86.9	88	54	63.3	64	78	86.4	85	53		67	79		84	54		64	78		88
08-12-26	56	68.7	66	73	86.9	88	56	63.7	66	75	86.9	87	54	63.3	61	78	86.4	83	54		69	78		80
08-11-26	57	69.1	69	79	88.9	90	56	68.7	65	72	86.9	86	55	63.7	67	75	86.9	87	54	63.3	59	77	86.4	81
08-10-26	57	68.5	67	86	87.8	90	57	69.1	69	80	88.9	86	56	68.7	68	75	86.9	84	56	63.7	68	77	86.9	85
08-09-26	60	64.2	67	89	92.3	90	58	68.5	72	86	87.8	89	57	69.1	69	83	88.9	86	56	68.7	67	78	86.9	87
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		4	0		2	1		4	0		2	0		1	0		1	0		2
% Succ			66.7	16.7		66.7			40.0	20.0		80.0			50.0			25.0			33.3			66.7
Ave Error	9.6		1.5	8.0		1.5	10.5		2.1	9.2		1.3	10.7		1.6	9.5		2.3	9.9		3.4	9.4		2.5
Net Error	-9.6		0.1	-8.0		0.3	-10.5		0.5	-9.2		-0.8	-10.7		0.1	-9.5		-2.3	-9.9		-0.6	-9.4		-2.4
Std Dev	1.9		0.8	3.9		0.4	1.7		1.0	2.9		0.6	0.7		0.4	0.6		0.5	0.0		0.0	0.0		0.0

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