Point Forecast: Herndon PA  40.7N 76.88W (Elev. 482 ft)	Last Update: 10:12 am EDT Jun 15, 2024

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Weather Elements Fire Weather Aviation Weather Temperature (°F) Dewpoint (°F) Heat Index (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Fog Mixing Height  x100ftx100m Haines Index Lightning Activity Level Trans. Wind  ktmphkm/hm/s 20ft Wind  ktmphkm/hm/s Vent Rate (x1000 mph-ft) Davis Stability Index Atmospheric Dispersion Index Low Visibility Occurrence Risk Index Ceiling Height Visibility Thunder Potential

48-Hour Period Starting: 11am Sat, Jun 15 202412pm Sat, Jun 15 20241pm Sat, Jun 15 20242pm Sat, Jun 15 20243pm Sat, Jun 15 20244pm Sat, Jun 15 20245pm Sat, Jun 15 20246pm Sat, Jun 15 20247pm Sat, Jun 15 20248pm Sat, Jun 15 20249pm Sat, Jun 15 202410pm Sat, Jun 15 202411pm Sat, Jun 15 202412am Sun, Jun 16 20241am Sun, Jun 16 20242am Sun, Jun 16 20243am Sun, Jun 16 20244am Sun, Jun 16 20245am Sun, Jun 16 20246am Sun, Jun 16 20247am Sun, Jun 16 20248am Sun, Jun 16 20249am Sun, Jun 16 202410am Sun, Jun 16 202411am Sun, Jun 16 202412pm Sun, Jun 16 20241pm Sun, Jun 16 20242pm Sun, Jun 16 20243pm Sun, Jun 16 20244pm Sun, Jun 16 20245pm Sun, Jun 16 20246pm Sun, Jun 16 20247pm Sun, Jun 16 20248pm Sun, Jun 16 20249pm Sun, Jun 16 202410pm Sun, Jun 16 202411pm Sun, Jun 16 202412am Mon, Jun 17 20241am Mon, Jun 17 20242am Mon, Jun 17 20243am Mon, Jun 17 20244am Mon, Jun 17 20245am Mon, Jun 17 20246am Mon, Jun 17 20247am Mon, Jun 17 20248am Mon, Jun 17 20249am Mon, Jun 17 202410am Mon, Jun 17 202411am Mon, Jun 17 202412pm Mon, Jun 17 20241pm Mon, Jun 17 20242pm Mon, Jun 17 20243pm Mon, Jun 17 20244pm Mon, Jun 17 20245pm Mon, Jun 17 20246pm Mon, Jun 17 20247pm Mon, Jun 17 20248pm Mon, Jun 17 20249pm Mon, Jun 17 202410pm Mon, Jun 17 202411pm Mon, Jun 17 202412am Tue, Jun 18 20241am Tue, Jun 18 20242am Tue, Jun 18 20243am Tue, Jun 18 20244am Tue, Jun 18 20245am Tue, Jun 18 20246am Tue, Jun 18 20247am Tue, Jun 18 20248am Tue, Jun 18 20249am Tue, Jun 18 202410am Tue, Jun 18 202411am Tue, Jun 18 202412pm Tue, Jun 18 20241pm Tue, Jun 18 20242pm Tue, Jun 18 20243pm Tue, Jun 18 20244pm Tue, Jun 18 20245pm Tue, Jun 18 20246pm Tue, Jun 18 20247pm Tue, Jun 18 20248pm Tue, Jun 18 20249pm Tue, Jun 18 202410pm Tue, Jun 18 202411pm Tue, Jun 18 202412am Wed, Jun 19 20241am Wed, Jun 19 20242am Wed, Jun 19 20243am Wed, Jun 19 20244am Wed, Jun 19 20245am Wed, Jun 19 20246am Wed, Jun 19 20247am Wed, Jun 19 20248am Wed, Jun 19 20249am Wed, Jun 19 202410am Wed, Jun 19 202411am Wed, Jun 19 202412pm Wed, Jun 19 20241pm Wed, Jun 19 20242pm Wed, Jun 19 20243pm Wed, Jun 19 20244pm Wed, Jun 19 20245pm Wed, Jun 19 20246pm Wed, Jun 19 20247pm Wed, Jun 19 20248pm Wed, Jun 19 20249pm Wed, Jun 19 202410pm Wed, Jun 19 2024

Date	06/15													06/16
Hour (EDT)	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10
Temperature (°F)	70	72	74	74	75	76	76	76	75	72	69	65	62	60	58	56	55	53	52	52	54	58	62	67
Dewpoint (°F)	55	53	52	51	50	49	49	50	50	50	49	48	47	46	45	44	43	43	43	43	44	46	47	47
Heat Index (°F)					75	76	76	76	75
Surface Wind (mph)	7	7	7	7	7	7	8	6	6	6	5	5	5	5	3	2	2	1	1	1	1	1	2	2
Wind Dir	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	NE	SE
Gust
Sky Cover (%)	8	8	7	7	6	5	4	3	2	1	5	8	12	17	23	28	26	23	21	20	20	19	25	31
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	59	51	46	44	41	39	39	40	41	46	49	54	58	60	62	64	64	69	71	71	69	64	58	49
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date														06/17
Hour (EDT)	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10
Temperature (°F)	69	72	75	77	78	79	79	78	77	75	73	71	69	68	67	66	65	64	63	63	66	68	71	74
Dewpoint (°F)	48	49	50	51	52	53	53	54	55	56	56	56	56	56	57	57	57	58	58	58	59	60	61	62
Heat Index (°F)			75	77	78	79	79	78	77	75
Surface Wind (mph)	2	3	3	5	6	6	7	7	6	6	6	6	6	6	6	5	5	5	5	5	5	6	6	6
Wind Dir	SE	S	S	S	S	S	S	S	SE	SE	SE	S	S	S	S	S	S	S	S	S	S	S	S	S
Gust
Sky Cover (%)	37	32	26	21	24	27	30	25	19	13	18	24	29	26	23	20	24	27	31	27	23	19	19	20
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1
Relative Humidity (%)	47	44	41	40	40	41	41	43	47	52	55	59	63	65	70	73	75	81	84	84	78	76	71	66
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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