Point Forecast: 2 Miles ENE Donner Summit CA  39.33N 120.35W (Elev. 2193 m)	Last Update: 3:52 am PDT May 14, 2025

[hide menu]

Weather Elements Weather/Precipitation Fire Weather Temperature (°C) Dewpoint (°C) Heat Index (°C) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Fog Mixing Height  x100ftx100m Trans. Wind  ktmphkm/hm/s

48-Hour Period Starting: 4am Wed, May 14 20255am Wed, May 14 20256am Wed, May 14 20257am Wed, May 14 20258am Wed, May 14 20259am Wed, May 14 202510am Wed, May 14 202511am Wed, May 14 202512pm Wed, May 14 20251pm Wed, May 14 20252pm Wed, May 14 20253pm Wed, May 14 20254pm Wed, May 14 20255pm Wed, May 14 20256pm Wed, May 14 20257pm Wed, May 14 20258pm Wed, May 14 20259pm Wed, May 14 202510pm Wed, May 14 202511pm Wed, May 14 202512am Thu, May 15 20251am Thu, May 15 20252am Thu, May 15 20253am Thu, May 15 20254am Thu, May 15 20255am Thu, May 15 20256am Thu, May 15 20257am Thu, May 15 20258am Thu, May 15 20259am Thu, May 15 202510am Thu, May 15 202511am Thu, May 15 202512pm Thu, May 15 20251pm Thu, May 15 20252pm Thu, May 15 20253pm Thu, May 15 20254pm Thu, May 15 20255pm Thu, May 15 20256pm Thu, May 15 20257pm Thu, May 15 20258pm Thu, May 15 20259pm Thu, May 15 202510pm Thu, May 15 202511pm Thu, May 15 202512am Fri, May 16 20251am Fri, May 16 20252am Fri, May 16 20253am Fri, May 16 20254am Fri, May 16 20255am Fri, May 16 20256am Fri, May 16 20257am Fri, May 16 20258am Fri, May 16 20259am Fri, May 16 202510am Fri, May 16 202511am Fri, May 16 202512pm Fri, May 16 20251pm Fri, May 16 20252pm Fri, May 16 20253pm Fri, May 16 20254pm Fri, May 16 20255pm Fri, May 16 20256pm Fri, May 16 20257pm Fri, May 16 20258pm Fri, May 16 20259pm Fri, May 16 202510pm Fri, May 16 202511pm Fri, May 16 202512am Sat, May 17 20251am Sat, May 17 20252am Sat, May 17 20253am Sat, May 17 20254am Sat, May 17 20255am Sat, May 17 20256am Sat, May 17 20257am Sat, May 17 20258am Sat, May 17 20259am Sat, May 17 202510am Sat, May 17 202511am Sat, May 17 202512pm Sat, May 17 20251pm Sat, May 17 20252pm Sat, May 17 20253pm Sat, May 17 20254pm Sat, May 17 20255pm Sat, May 17 20256pm Sat, May 17 20257pm Sat, May 17 20258pm Sat, May 17 20259pm Sat, May 17 202510pm Sat, May 17 202511pm Sat, May 17 202512am Sun, May 18 20251am Sun, May 18 20252am Sun, May 18 20253am Sun, May 18 20254am Sun, May 18 20255am Sun, May 18 20256am Sun, May 18 20257am Sun, May 18 20258am Sun, May 18 20259am Sun, May 18 202510am Sun, May 18 202511am Sun, May 18 202512pm Sun, May 18 20251pm Sun, May 18 20252pm Sun, May 18 20253pm Sun, May 18 2025

Date	05/14																				05/15
Hour (PDT)	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03
Temperature (°C)	-2	-2	-2	-1	1	3	5	7	8	8	9	9	8	7	7	6	4	3	2	2	2	1	1	1
Dewpoint (°C)	-3	-3	-3	-2	-2	-2	-2	-2	-1	-1	-1	-1	1	1	1	1	1	1	1	0	-1	-1	-1	-1
Heat Index (°C)
Surface Wind (mph)	3	3	2	2	2	2	3	5	6	7	8	7	7	7	6	6	5	3	3	2	2	2	3	3
Wind Dir	NE	NE	NE	NE	NE	ENE	ENE	W	W	W	W	W	W	W	W	W	W	NW	NNW	N	NNE	NNE	NE	NE
Gust
Sky Cover (%)	19	18	20	21	15	6	11	16	18	35	58	60	62	61	57	35	24	19	14	12	7	5	5	6
Precipitation Potential (%)	0	0	0	0	0	0	0	1	2	3	5	7	6	8	6	5	4	3	1	1	1	1	1	0
Relative Humidity (%)	95	97	96	92	82	73	61	55	53	51	50	52	57	64	67	73	80	86	87	87	86	89	88	91
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																					05/16
Hour (PDT)	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03
Temperature (°C)	1	1	1	2	4	7	9	11	13	13	13	13	12	11	9	8	7	6	5	5	5	5	5	4
Dewpoint (°C)	-1	-1	-1	-1	0	0	-1	-1	-1	0	1	1	1	1	1	1	0	0	-1	-1	0	0	0	0
Heat Index (°C)
Surface Wind (mph)	3	3	3	3	2	2	2	5	5	5	8	8	8	10	10	10	6	6	6	3	3	3	2	2
Wind Dir	NE	NE	NE	NE	E	E	E	WSW	WSW	WSW	W	W	W	W	W	W	WSW	WSW	WSW	WSW	WSW	WSW	W	W
Gust
Sky Cover (%)	7	18	18	18	14	14	14	13	13	13	22	22	22	50	50	50	79	79	79	82	82	82	80	80
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	2	2	2	2	2
Relative Humidity (%)	90	88	89	79	74	62	51	44	40	40	42	43	46	49	54	59	63	65	67	68	69	70	71	73
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

English Units Forecast Discussion 7-Day Forecast Hourly Weather Graph Watches and Warnings